Entries |
Document | Title | Date |
20080245582 | FLOATING CAPACITIVE COUPLERS USED TO ENHANCE SIGNAL COUPLING IN A CAPACITIVE TOUCHPAD - A capacitive touchpad comprised of drive electrodes and at least one sense electrodes disposed on or within an insulating substrate material, wherein an electrically floating capacitive coupler is disposed adjacent to both the drive electrodes and the sense electrode to thereby enhance signal coupling between the drive electrodes and the sense electrode caused by introduction of a pointing object. | 10-09-2008 |
20080251299 | CAPACITANCE TOUCH SENSOR - A capacitance touch sensor includes a square wave generator for generating a square wave clock, a sensor panel for receiving the square wave clock and then generating a panel signal, a peak detector for receiving the panel signal and then generating an analog peak signal, an analog-to-digital converter for receiving the analog peak signal and then generating a digital peak signal, and a control unit for receiving the digital peak signal and generating a detection signal according to a level of the digital peak signal to indicate whether the sensor panel is touched or not. | 10-16-2008 |
20080277171 | Reducing sleep current in a capacitance sensing system - An apparatus and method for reducing power consumption of capacitance sensing device in a reduce power mode. In one embodiment, the method includes individually measuring a capacitance on each of a plurality of sensor elements of a device, coupling a group of sensor elements of the plurality of sensor elements together when a presence of a conductive object is not detected on the plurality of sensor elements while individually measuring the capacitance on each of the plurality of sensor elements, and collectively measuring a capacitance on the group of sensor elements. In one embodiment, the apparatus includes a processing device, and a plurality of sensor elements that are individually coupled in a first mode and collectively coupled in a second mode. | 11-13-2008 |
20080283310 | SYSTEM FOR USING A GROUND ELECTRODE TO AMPLIFY SIGNALS ON A CAPACITANCE SENSITIVE TOUCHPAD - A capacitance sensitive touchpad having a ground electrode disposed on top of but not in electrical contact with an XY grid of electrodes, wherein a plurality of mechanical keys are disposed above but not in electrical contact with the ground electrode, wherein each of the plurality of mechanical keys includes a conductive material generally disposed on an underside that makes contact with the ground electrode when any of the plurality of keys are pressed in order to indicate actuation, wherein a signal generated by the conductive material that is in electrical contact with the ground electrode is amplified by the ground electrode and therefore detectable by the XY grid of electrodes disposed underneath the ground electrode. | 11-20-2008 |
20080302582 | Easy to Use and Intuitive User Interface for a Remote Control - The present invention is a system and method for an easy to use and intuitive user interface on a remote control. In one embodiment of the present invention, a touch sensitive area is extended beyond a screen. In one embodiment, soft buttons lie partially on the screen and partially off it (on the extended touch-sensitive area). This allows for an increased input area for the user, without the increase in cost associated with a larger screen. Moreover, this allows for a smooth, flat, and sleek upper surface of the remote control. In one embodiment of the present invention, a remote control provides different user experiences based upon the context of use of the remote control. For instance, the color of the screen as well as the color of backlighting for certain buttons is dependent upon what mode the remote control is in. | 12-11-2008 |
20080308323 | Object Location Sensor of Touch Panel - An object location sensor of a touch panel has at least one capacitive sensing set having two adjacent capacitive sensors. The at least one capacitive sensing set is arranged along a direction, one capacitive sensor has a capacitance value increasing gradually along the direction, and another capacitive sensor has a capacitance value decreasing gradually along the direction. | 12-18-2008 |
20090008161 | Capacitive sensor array and gesture recognition - Apparatus and methods for determining a deflection of a moveable conductive plate that is moved over a capacitive sensing device. The method may include moving the moveable conductive plate over sensor elements of the capacitive sensing device, and determining the deflection of the moveable conductive plate. In determining the deflection, a deflection magnitude and a deflection direction may be determined by calculating a vector of x- and y-directions or a vector of a radius and an angle. | 01-08-2009 |
20090008162 | Input Device of Capacitive Touchpad - An input device of capacitive touchpad is capable of generating an inducing capacitance through holding by a user. The claimed input device includes a pen nib which is made of/from an electric-conductive material, a pen body providing wider holding area for the user and a connect part for holding by the user. The pen nib and the connect part have an inlaying component in pairs such as mortise to lodged in or inset into each other. The pen nib may be made of/from an elastic or soft electric-conductive material which is made of/from a polyester compound doped or mixed with a metal powder or having metallic covering stuffed with the elastic or soft electric-conductive material for increasing the contact surface area. Accordingly, the present invention solves the available pad area shortening problem and the capacitance sensing variation result from the sweat of finger. | 01-08-2009 |
20090032312 | Touch Position Detector of Capacitive Touch Panel and Method for Detecting the Touch Position - A touch position detector includes a plurality of capacitance sensors, a negative capacitance compensation unit, an analog/digital converter and a micro processing unit. The negative capacitance compensation unit is utilized to compensate the capacitance of the capacitance sensor and get a capacitance change. The micro controller unit is utilized to detect the touch position according to the capacitance change. It is easy to get the touch position by using the touch position detector. | 02-05-2009 |
20090065267 | INPUT APPARATUS - An input apparatus includes a surface plate, an electrostatic capacitive sensor disposed under the surface plate, and a strain sensor disposed between the electrostatic capacitive sensor and the surface plate and fixed to the back surface of the surface plate. As a first input operation, when a finger is moved on an operation area of the surface plate, the movement position can be detected by the electrostatic capacitive sensor. As a second input operation, when the operation area is pressed down, the pressing force can be detected by the strain sensor. A series of the first input operation and the second input operation can be performed without leaving the finger from the operation area. Therefore, the input operation can be simply performed. | 03-12-2009 |
20090084613 | Capacitive Touch Panel with Low Coupling Capacitance and Display Device Using the Capacitive Touch Panel - A capacitive touch panel and a display device using the capacitive touch panel are provided. The capacitive touch panel includes a plurality of first direction electrode strings and second direction electrode strings. Each first direction electrode string has a plurality of first electrodes while each second direction electrode has a plurality of second electrodes. In order to reduce the lateral capacitance between adjacent electrodes, width of the first electrode is reduced from the middle to two sides of the electrode along a second direction. In addition, the first electrode has a perimeter surrounding itself. Each quarter of the perimeter of the first electrode facing the adjacent second electrode has a first slope change rate and a different second slope change rate. | 04-02-2009 |
20090090568 | Apparatus for controlling digital device based on touch input interface capable of visual input feedback and method for the same - The present invention relates to an apparatus and method for controlling a digital device, which controls the digital device by using a sensor sensing a touch of a human body, and more particularly, to an apparatus and method for controlling a digital device, which controls a digital device via a touch sensor and provides feedback information based on touch information of a sensor. The digital device control apparatus comprises a sensor including a plurality of touch-sensitive switches separated from each other by a certain distance and sensing user's touch on the touch-sensitive switches for generating touch information; a control information generating unit generating control information for controlling the mobile device based on the touch information; a control unit controlling the mobile device according to the generated control information; a feedback information generating unit generating feedback information based on the touch information; and a plurality of light-emitting devices visually displaying the feedback information to the user corresponding to the plurality of the touch-sensitive switches. According to the present invention, the user may clearly recognize the plurality of the touch-sensitive switches being touched. | 04-09-2009 |
20090095542 | TOUCH SENSOR AND OPERATING METHOD THEREOF - Provided are a touch sensor and a method of operating the same. The touch sensor includes: a pulse signal generator for generating a pulse signal of which pulse width is calibrated in response to a control code; a pulse signal transmitter for transmitting the pulse signal when a touch object is out of contact with a touch pad and stopping transmitting the pulse signal when the touch object is in contact with the touch pad; a pulse signal detector for detecting the pulse signal transmitted through the pulse signal transmitter; and a controller recognizing a non-contact state and adjusting the control code to calibrate the pulse width of the pulse signal when the pulse signal detector detects the pulse signal. In the above-described configuration, the contact of the touch object with the touch pad can be sensed more precisely, and the occurrence of a malfunction in the touch sensor due to changed operating conditions can be prevented. As a result, the operating reliability of the touch sensor can be enhanced. | 04-16-2009 |
20090101417 | TOUCH SENSOR - A touch sensor includes: a first touch sensor section; a second touch sensor section disposed close to the first touch sensor; and a sensor detection section detecting whether a valid touch has been given to the first touch sensor section on the basis of an output of the second touch sensor section. | 04-23-2009 |
20090107737 | MULTIPLE-SENSOR-ELECTRODE CAPACITIVE BUTTON - Methods for determining actuation of a capacitive button having at least three sensor electrode elements associated with at least three distinct sensor electrodes are described. In one embodiment, indicia from the at least three distinct sensor electrodes associated with the at least three sensor electrode elements comprising the capacitive button are received. At least three electrode values are generated from the indicia. The at least three electrode values are then utilized to determine actuation of the capacitive button. | 04-30-2009 |
20090114457 | Object detection for a capacitive ITO touchpad - In the detection of multiple objects touching on a capacitive ITO touchpad, the relative levels of the capacitive measurements received by a touch integrated circuit are used to determine the relative position between the multiple objects. | 05-07-2009 |
20090120697 | DISCERNING BETWEEN SUBSTANCES - A method and apparatus to detect the presence of a material at a sensing device and to determine whether the material is a first material having a first material property or a second material having a second material property. | 05-14-2009 |
20090159344 | TOUCH PAD ELECTRODE DESIGN - A multi-touch capacitive touch sensor panel can be created using a substrate with column and row traces formed on separate layers of the substrate. The column and row traces can include sections extending from a central trace and forming a rectilinear trace pattern with sections of the columns and rows interdigitated with one another. The trace pattern can comprise a plurality of pixels arranged continuously across the sensor panel. In this manner, the sensor panel can provide a linear or near linear response to touches across the touch sensor panel. | 06-25-2009 |
20090166099 | UNLOCKING METHOD WITH TOUCH SENSOR - An unlocking method with a touch sensor is provided. The method is adapted to a portable device having a touch sensor, wherein the portable device is at a lock state. The method is as follows. First, a signal generated by an input device is received by the touch sensor. Next, a movement of the touch sensor triggered by the input device is sensed. Next, the signal is identified to determine whether or not the input device is an effective unlock device. Finally, when the input device is the effective unlock device and the movement is an effective movement, the lock state of the portable device is switched to an unlock state. | 07-02-2009 |
20090166100 | POSITION DETECTING DEVICE - A position detecting device includes a position indicator ( | 07-02-2009 |
20090194344 | Single Layer Mutual Capacitance Sensing Systems, Device, Components and Methods - According to one embodiment, there is provided a mutual capacitance sensing system comprising at least one substrate comprising an electrode array mounting surface. A plurality of drive electrodes are disposed in a first plurality of rows or columns positioned upon the electrode array mounting surface, where the drive electrodes in each row or column are electrically connected to one another. A plurality of sense electrodes are disposed in a second plurality of rows or columns positioned upon the electrode array mounting surface that is substantially perpendicular to the first plurality of rows or columns, and the sense electrodes in each column are electrically connected to one another. The sense and drive electrodes form an array disposed substantially in a single plane that is configured to permit at least one location corresponding to at least one finger placed in proximity thereto to be detected thereby. | 08-06-2009 |
20090205879 | TOUCH SENSOR AND METHOD FOR MANUFACTURING SAME - A touch sensor, such as a capacitive touch sensor, includes a substrate having at least one passageway established therethrough. A first conductive coating is established at a first surface of the substrate, and a conductive element is disposed at the substrate and at least partially through the passageway, The conductive element establishes conductive continuity between the first surface and second or opposite surface of the substrate. A thin sheet (such as a thin glass or plastic sheet) is disposed at and over the first surface of the substrate. The passageway may comprise multiple passageways established inboard of a perimeter edge of the substrate. The thin glass or plastic sheet may be laminated at or to the substrate. | 08-20-2009 |
20090218148 | Detection of Attack Velocity Features in Capacitive Touch Sensor Data - Systems and methods for detecting attack velocity features from a single capacitive touch sensor or an array of capacitive touch sensors. In one example, the method uses sequential capacitive touch sensor data to estimate the velocity at which the sensor was touched. | 09-03-2009 |
20090250268 | METHOD FOR RAPIDLY TESTING CAPACITANCE SENSING ARRAY FAULT CONDITIONS - The testing of a multi-touch sensor panel for opens and shorts on its drive and sense lines is disclosed by placing a substantially ungrounded conductor diagonally over the touch sensor panel so that at least a portion of every drive line and every sense line is covered by the substantially ungrounded conductor. Pixels under the substantially ungrounded conductor can have strongly positive pixels, while pixels outside the substantially ungrounded conductor can have negative pixels. With the substantially ungrounded conductor in place, a backdrop of negative pixels is formed, and an image of touch can be obtained. By analyzing the image of touch, any opens and shorts on the drive and sense lines, any shorts between a drive and a sense line, or any open drive and sense lines can be quickly identified against the backdrop of negative pixels. | 10-08-2009 |
20090250269 | Capacitive touch system and data transmission method in a capacitive touch system - A capacitive touch system uses at least two first integrated circuits to simultaneously scan a touch panel, each of the first integrated circuits only for scanning a portion of the touch panel to retrieve the sensed data from its responsible traces. Therefore, the capacitive touch system can maintain a good frame rate, even the touch panel is a large scale touch panel. A data transmission method transmits only the non-zero sensed values to a second integrated circuit where a calculation with the non-zero sensed values is executed, and thereby reduces the data transmission time. | 10-08-2009 |
20090255737 | Device and Method for Preventing the Influence of Conducting Material from Point Detection of Projected Capacitive Touch Panel - This invention provides a device for preventing the influence of conducting material from point detection of projected capacitive touch panel. The device includes a first sensing layer having a plurality of first axial conductive lines isolated from each other and electrically connected to a plurality of first outside-connection conducting wires correspondingly, a second sensing layer having a plurality of second axial conductive lines isolated from each other and electrically connected to a plurality of second outside-connection conducting wires correspondingly, a signal driving line electrically connecting to the first and the second outside-connection conducting wires to provide a first sensing signal, and a sensing unit electrically connecting the first and the second outside-connection conducting wires to sense the sensing signal on the first and the second axial conductive lines. Wherein, the second sensing layer is on a dielectric layer, the first sensing layer, and a substrate in sequence. | 10-15-2009 |
20090266625 | COORDINATE INPUT DEVICE - A coordinate inputting device includes an X+ electrode having a plurality of X+ branch patterns extending from one side to the other side in the X direction, an X− electrode having a plurality of X− branch patterns extending from one side to the other side in the X direction, a Y+ electrode having a plurality of Y+ branch patterns extending from one side to another side in the Y direction, and a Y− electrode having a plurality of Y− branch patterns extending from one side to the other side in the Y direction. An X, Y coordinate position of an object is detected from, respectively, the difference between the floating capacitances of the X+ electrode and X− electrode, and the difference between the floating capacitances of Y+ electrode and Y− electrode, which change according to the surface area of the electrodes in proximity to the object to be detected. | 10-29-2009 |
20090277696 | GRADIENT SENSORS - A capacitive sensing device for sensing a user input comprises a resistive sheet, a plurality of electrodes, at least one sensing node, and at least one charge integrator. The plurality of electrodes is disposed on a plurality of edge regions of the resistive sheet and configured for applying excitation voltages to the resistive sheet such that a substantially steady state voltage gradient is established on the resistive sheet. At least one of the sensing nodes is disposed on at least one of the plurality of edge regions of the resistive sheet and configured for sensing a resulting charge on the resistive sheet after establishment of the substantially steady state voltage gradient and a cessation of application of the excitation voltages. At least one of the charge integrators is coupled to the at least one sensing node and configured for measuring the resulting charge to produce a measurement. | 11-12-2009 |
20090283340 | Capacitive touch control device and method thereof - Disclosed are a capacitive touch control device and a method thereof. A top face of a substrate is provided with first and second electrode groups, which each include a plurality of strip-like electrodes spaced from each other by a preset distance. The electrodes of the first and second electrode groups are respectively connected by first and second group scanning lines to a scanning circuit. When the first group scanning lines drive the electrodes of the first electrode group, the second group scanning lines carry out scanning operation on the electrodes of the second electrode group, and when the second group scanning lines drive the electrodes of the second electrode group, the first group scanning lines carry out scanning operation on the electrodes of the first electrode group. And, a touch location can thus be determined by using a microprocessor. | 11-19-2009 |
20090294186 | Touch position determining device and method, and electronic touch-sensitive device - In a device for determining the position of a touch on a contact surface, a plurality of vibration sensors are configured to detect mechanical vibrations generated by the touch on the contact surface and to generate corresponding vibration signals, and a processing circuit is connected to the vibration sensors and is configured to determine the touch position via a time-of-flight algorithm, based on differences between times of detection of the mechanical vibrations by the vibration sensors. | 12-03-2009 |
20090321149 | ARRANGEMENT FOR PRODUCING AN ELECTRIC FIELD AND SENSOR DEVICE INCLUDING SAME - The invention relates to an arrangement for producing an electric field which is markedly influenced in relation to the spatial expansion thereof, and to a sensor device which comprises the same. The aim of the invention is to provide solutions which make it possible to generate a quasi-static electric alternating field which expands in a precise manner in regard to focusing in a relevant preferential area embodied as a monitoring and signal transmission area. Said aim is achieved by means of a circuit arrangement comprising a field producing electrode device which is connected as such in an LC network and which is exposed to a spatial area of the field in such a manner that the capacity of the capacitor system comprising the electrode device alters in accordance with the dielectric properties of the material present in the spatial area of the field, an insulating layer which extends on a rear side of the field electrode device which is oriented away from the spatial area of the field, a screening electrode device which extends on the rear side of the insulating layer which is oriented away from the field electrode device and a field extinction electrode device which comprises an electrode surface which is oriented towards an extinction area. The field expansion electrode device and the field extinction electrode device are arranged in such a manner and impinged upon by voltage that the spatial area of the field and the extinction area are superimposed on each other in sections. | 12-31-2009 |
20100000803 | CAPACITIVE TOUCH PANEL WITH X AND Y AXIS TRACES - A capacitive touch panel is made of transparent panel assembled by a substrate layer, a sensing layer, an insulated layer, and a surface layer. A plurality of transparent X and Y axis traces are arranged on the same plane of the sensing layer and the X and Y axis traces intersect each other as a matrix. Induction-spots formed on each X axis trace are connected one by one, while the induction-spots of each Y axis trace are formed separately with gaps. Through holes in pair are formed on the insulated layer respectively to all the abreast induction-spots of each Y axis trace. A conductive wire is arranged above and across the pair of through holes. Both ends of the conductive wire exposed to the through holes respectively are formed as electrical joints. While the insulated layer is arranged above the sensing layer. | 01-07-2010 |
20100006350 | Stylus Adapted For Low Resolution Touch Sensor Panels - Methods and apparatus adapted to ensure that contact from a stylus will be detected on a low resolution touch sensor panel irrespective of the location of the region of contact upon the touch surface. In some embodiments, a metallic or otherwise conductive disk may be attached to one end of the stylus. The disk may be sized so as to guarantee sufficient electrical interaction with at least one sensory element of the touch sensor panel. In some embodiments, the stylus may be powered so as to provide a stimulus signal to the capacitive elements. Optionally, one or more force and/or angle sensors disposed within the stylus can supply additional data to the touch panel. | 01-14-2010 |
20100044122 | Capacitive Touch Screen with Noise Suppression - A capacitive touch sensor wherein the touch sensitive panel has drive electrodes arranged on the lower side of a substrate and sense electrodes arranged on the upper side. The drive electrodes are shaped and dimensioned to substantially entirely cover the touch sensitive area with individual drive electrodes being separated from each other by small gaps, the gaps being so small as to be practically invisible. The near blanket coverage by the drive electrodes also serves to screen out interference from noise sources below the drive electrode layer, such as drive signals for an underlying display, thereby suppressing noise pick-up by the sense electrodes that are positioned above the drive electrodes. | 02-25-2010 |
20100051354 | CAPACITIVE TOUCH SENSOR SYSTEM - A method of matrix sensing using delay-based capacitance sensing, including using X-axis lines as active lines for capacitance measurements and using Y-axis lines as a disturbance to identify the location of a touch in a key matrix is disclosed. A sensing signal is applied to the X-axis lines, and a disturbance signal is applied to the Y-axis lines. If a location is touched, cross-capacitance is reduced, which is measured by sweeping data along the X-axis lines. | 03-04-2010 |
20100051355 | CAPACITIVE TOUCH PANEL - An improved structure of capacitive touch panel mainly improves the arrangement of induction-spots on ends of X and Y axis traces so that the capacitive sensing area on edges of the working area of a touch panel are arranged equally. Thus, the sensing signals on edges of the working area of the touch panel can be detected so as to maximize the actual effecting area of the touch panel. | 03-04-2010 |
20100059294 | BANDWIDTH ENHANCEMENT FOR A TOUCH SENSOR PANEL - A system is disclosed for enhancing the stimulation signal bandwidth for a touch sensor panel and maintaining relatively uniform touch sensitivity over the touch sensor panel surface. In one embodiment, a bandwidth enhancement circuit is coupled in parallel to a sensor circuit. The sensor circuit includes a source of stimulating voltage, a drive line, a sense line, and a charge amplifier. The drive line and the sense line are coupled with each other by a mutual capacitance Csig. The bandwidth enhancement circuit can be a RC circuit coupled in parallel to the sensor circuit. The bandwidth enhancement circuit can be represented by two serially coupled resistors, each of which is also coupled to ground on one end, and two capacitors. In particular, one of the capacitors couples the bandwidth enhancement circuit to the drive line, and the other capacitor couples the bandwidth enhancement circuit to the sense line. | 03-11-2010 |
20100059295 | Single-chip multi-stimulus sensor controller - A multi-stimulus controller for a multi-touch sensor is formed on a single integrated circuit (single-chip). The multi-stimulus controller includes a transmit oscillator, a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator, a plurality of transmit channels that transmit the drive signals simultaneously to drive the multi-touch sensor, a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor, a receive oscillator, and a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results, the demodulation section including a demodulator and a vector operator. | 03-11-2010 |
20100065341 | DRIVING SCANNED CHANNEL AND NON-SCANNED CHANNELS OF A TOUCH SENSOR WITH SAME AMPLITUDE AND SAME PHASE - The scanned channel and the non-scanned channels of a capacitive touch sensor are driven by a scan signal and a shield signal, respectively, with the shield signal having a substantially same amplitude and a substantially same phase as the amplitude and the phase, respectively, of the scan signal. Thus, the potentials at both the routing line of the scanned channel and the routing line of the non-scanned channels follow each other and are maintained substantially same regardless of which channel is the scanned one. As a result, the parasitic capacitance arising between the two routing lines is reduced significantly, and the accuracy and the sensitivity of the touch sensor are significantly enhanced. | 03-18-2010 |
20100065342 | TOUCH SCREEN HAVING REDUCED REFLECTION - An electronic touch screen has a substrate having a glass transition temperature Tg below 300° C. The touch screen additionally has a first refractive index matched conductive layer formed on the substrate, a dielectric layer formed on the first index matched conductive layer, and a second index matched conductive layer formed on the dielectric layer. Further, the electronic touch screen has a set of contacts operatively coupled to the first and second index matched conductive layers, which are coupleable to an electronic circuit. | 03-18-2010 |
20100071965 | SYSTEM AND METHOD FOR GRAB AND DROP GESTURE RECOGNITION - X-axis and Y-axis sensor arrays detect hand motion. The array data are processed by a trained model gesture recognizer to discriminate between grab and touch gestures. Touch gestures are further processed using touch point classifier, Hidden Markov Model and peak detector to discriminate between single point touch and multiple point touch. A Kalman tracker analyzes the trajectories of the X and Y axis data to determine how to associate X and Y axis data into ordered pairs corresponding to the touch points. The system resolves ambiguities inherent in certain sensor arrays and will also detect grab and drop gestures where the detected hand is sometimes out of sensor range during the gestural sequence. | 03-25-2010 |
20100071966 | CAPACITIVE TOUCH PAD APPARATUS - Electrodes E | 03-25-2010 |
20100096193 | CAPACITIVE TOUCH SENSORS - A touch data set is acquired via signals from each sensing node in a capacitive sensor array having a plurality of sensing nodes. Touch presence and location on the capacitive sensor array is determined from the touch data set. In subsequent sampling periods while presence of a touch continues to be detected, touch data sets may be acquired from respective subsets of the sensing nodes, each subset being located at and adjacent to the touch location determined in the preceding sampling period. | 04-22-2010 |
20100108409 | CAPACITIVE COUPLING TYPE TOUCH PANEL - A capacitive coupling type touch panel includes an XY-coordinate electrode configured to detect an XY-position coordinate. The XY-coordinate electrode is provided on a transparent substrate and detects a position inputted by capacitive coupling. The capacitive coupling type touch panel also includes an electrode provided at a position so as to be isolated from and opposed to the XY-coordinate electrode. | 05-06-2010 |
20100139991 | Noise Reduction in Capacitive Touch Sensors - Noise reduction in a one- or two-dimensional capacitive sensor array is achieved by rejecting and re-acquiring noisy signals. The sensor array is formed of crossed X and Y lines for drive and sense functions respectively, each of the X lines being driven in turn to acquire a full frame of data from the sensor array. A controller actuates the X lines in turn and, for each X line, charge is transferred to charge measurement capacitors connected to respective ones of the Y lines. The controller measures a signal value from a first one of the measurement capacitors, and then tests if that Y signal value has a magnitude lying within an acceptable range. If not, the measurement capacitors are all reset without their signal values being measured, and the controller re-drives the same X line to initiate another charge transfer into the measurement capacitors for that X line. It is then attempted once again to acquire Y signal values for that X line. Noisy signal values are thus rejected, and the sensor re-acquires substitute signal values. This is distinct from the approach of acquiring data and then reprocessing it to remove or suppress noisy data as in the prior art. | 06-10-2010 |
20100147602 | HOME APPLIANCE AND WASHING MACHINE - A home appliance and a washing machine are provided. The home appliance includes a touch pad unit having a sensor to sense an external capacitance variation, a photo-etched member coupled to the touch pad unit and having a touch pad hole corresponding to the sensor, the photo-etched member having a pattern realized by photo-etching, and a transparent member coupled to the photo-etched member so as to define an external appearance of the photo-etched member and having an indicator to inform a user of a touch region, the indicator having an area smaller than that of the touch pad hole so as to be located in an interior region of the touch pad hole. The above described configuration advantageously prevents malfunction of the touch pad unit. | 06-17-2010 |
20100175932 | CONTROL SYSTEM AND METHOD FOR MANUAL PULSE GENERATOR - A control system of a manual pulse generator for controlling a rotation speed and a rotation direction of a motor includes a touch panel, a timer, a coordinate calculation unit, and a wave generation unit. The touch panel receives a contact signal and generates an electrical signal according to the contact signal. The timer records the amount of time used to input the contact signal. The coordinate calculation unit calculates coordinates of each input point of the contact signal on the touch panel according to the electrical signal to determine direction of the contact signal and input speed for the contact signal. The wave generation unit generates a pulse signal to control the motor according to the direction of the contact signal and the input speed for the contact signal. | 07-15-2010 |
20100193257 | TOUCH SENSOR PANELS WITH REDUCED STATIC CAPACITANCE - Capacitive touch panels may include a plurality of positive voltage lines that are driven at a first phase. These positive voltage lines may be used to provide the drive capacitance signal sensed by one or more sense regions. The touch panels may also include a plurality of negative phase voltage lines that are driven at a phase that is different than the first phase. Both the positive and negative voltage lines may cross-under one or more sense regions. The negative phase voltage lines are able to counter act and reduce the static capacitance in the sense regions. | 08-05-2010 |
20100193258 | TWO-DIMENSIONAL TOUCH PANEL - A capacitive touch panel is provided capable of detecting multiple simultaneous touches. The touch panel delivers sets of capacitance signal values to a processor which computes the coordinates of single or multiple touch locations on the touch panel. The processing of each set is performed by (i) identifying the sensing element having the largest capacitance signal value; (ii) defining a region around that sensing element; and (iii) repeating the process iteratively, wherein each subsequent identifying step excludes signals that lie in previously defined regions. A multi-touch sensor is thus provided in which the signal processing is based on successive definition of regions or sub-blocks in the touch: panel. The touch location in each region can be determined more accurately by then applying interpolation between the adjacent signal values. This allows for position resolution at a finer scale than that defined by the touch panel's electrode patterning. | 08-05-2010 |
20100212975 | TOUCH SENSOR AND OPERATING METHOD THEREOF - Provided are a touch sensor and a method of operating the same. The touch sensor includes: a pulse signal generator for generating a pulse signal of which pulse width is calibrated in response to a control code; a pulse signal transmitter for transmitting the pulse signal when a touch object is out of contact with a touch pad and stopping transmitting the pulse signal when the touch object is in contact with the touch pad; a pulse signal detector for detecting the pulse signal transmitted through the pulse signal transmitter; and a controller recognizing a non-contact state and adjusting the control code to calibrate the pulse width of the pulse signal when the pulse signal detector detects the pulse signal. In the above-described configuration, the contact of the touch object with the touch pad can be sensed more precisely, and the occurrence of a malfunction in the touch sensor due to changed operating conditions can be prevented. As a result, the operating reliability of the touch sensor can be enhanced. | 08-26-2010 |
20100224424 | INPUT DEVICE - An input device includes a plurality of detectors for respectively detecting a close approach of an approaching object, and a controller including a plurality of input channels. The plurality of detectors is aligned in a direction. Each of the detectors belongs to one of a plurality of groups each of which two or more detectors belong to. The plurality of detectors in each of the groups is connected in common to one of the input channels associated therewith in the controller. A permutation of the groups which at least three detectors, continuously aligned thus forming a set and arbitrarily selected from the plurality of detectors, respectively belong to is different by each set of at least three detectors. | 09-09-2010 |
20100230180 | CAPACITANCE CHANGE DETECTION CIRCUIT, TOUCH PANEL AND DETERMINATION METHOD - A detection circuit 1 includes: an input unit 2; two contact electrodes A and B which are connected to the input unit; phase invention means 3 connected to the contact electrode A; one amplification means 41 arranged in each contact means; and detection means 5A and 5B which detect as an electric change amount, an amplitude change of an input signal caused by a capacitance change in each of the contact electrodes A and B. The detection circuit 1 causes the two electrodes to input signals having phases shifted by a half period from each other by using the phase invention means 3. In the presence of contact, the amplitude of the input pulses is amplified by the one amplification means 41. The respective detection means 5A and 5B detect signals of respective electrodes from the one amplified signal and output them to output units 6A and 6B, respectively. | 09-16-2010 |
20100230181 | INPUT DEVICE - An input device includes: a first electrode which is positioned on a support side; a second electrode which is positioned on an operation side so as to face the first electrode with a distance therebetween and which moves closer to the first electrode due to an operation pressure; a first capacitance detection unit which detects a change in electrostatic capacitance from a change in potential or current of the second electrode when a human finger has been moved closer to the second electrode; and a second capacitance detection unit which detects a change in electrostatic capacitance from a change in potential or current of the first electrode when the second electrode has been moved closer to the first electrode. | 09-16-2010 |
20100243341 | WRITING DEVICE - A writing device includes: a display medium including: a first display layer; a second display layer stacked on the first display layer; a first conductive layer and a second conductive layer sandwiching the first display layer and the second display layer; and a photosensitive layer located between the first conductive layer and the second conductive layer; a voltage-applying unit that applies a bias voltage to the first conductive layer and the second conductive layer, a frequency of the bias voltage differing between a case in which a state of the first display layer and a state of the second display layer are changed simultaneously, and a case in which a state of the first display layer and a state of the second display layer are changed separately; and a light outputting unit that irradiates light to the display medium. | 09-30-2010 |
20100252336 | POSITION APPARATUS FOR TOUCH DEVICE AND POSITION METHOD THEREOF - A position apparatus of a touch device and a position method thereof are provided, wherein the touch device includes a plurality of scan lines. In the position method, a plurality of capacitances in the scan lines are sensed. Next, a plurality of capacitances respectively sensed in an i | 10-07-2010 |
20100258360 | Two-Dimensional Position Sensor - A two dimensional position sensor having a touch-sensitive panel defined by a single-layer electrode pattern arranged on one side of a substrate. The electrode pattern is made up of ‘n’ electrode units extending row-wise over the panel. Each electrode unit is made up of a single drive electrode extending across the touch-sensitive area of the panel and a plurality of ‘m’ sense electrodes, which collectively laterally extend across the touch-sensitive area and individually each occupy only a portion of the lateral extent. The sense electrodes are longitudinally offset from their associated drive electrode so that one edge of each sense electrode lies adjacent to one edge of the drive electrode, these coupling edges being separated by a gap dimensioned so that in use each pair of drive and sense electrodes have efficient capacitively coupling across the gap. This electrode pattern allows the longitudinal extent of each electrode unit to be made relatively small, which in turn is better for sensing multiple simultaneous touches, since this benefits from having more electrode units in any given panel. | 10-14-2010 |
20100258361 | TOUCH SENSOR DEVICE, CONTROL METHOD, TOUCH PANEL DEVICE AND PROGRAM - A touch sensor device | 10-14-2010 |
20100263944 | SENSOR STRUCTURE OF TOUCH PANEL AND METHOD FOR DETERMINING TOUCH SIGNAL GENERATING BY SENSOR STRUCTURE OF TOUCH PANEL - A sensor structure of a touch panel and a method of determining a touch signal generated by the same are disclosed. The sensor structure includes a plurality of sensor lines disposed on a surface of a substrate, and a control circuit electrically connected to the sensor lines. Each of the sensor lines has a plurality of conductive pads and a conductive line electrically connected the conductive pads. The control circuit receives a touch signal from one of the sensor lines. The touch signal is resulting from a touch capacitance generated between a touch and one of the conductive pads of the sensor line. The control circuit calculates the position of the touch based on the touch capacitance. In addition, the touch capacitance generated by a conductive pad close to the control circuit is larger than the touch capacitance generated by another conductive pad further away from the control circuit. | 10-21-2010 |
20100282525 | Capacitive Touchpad Method Using MCU GPIO and Signal Processing - A microcontroller identifies a maximum x-axis charge time and a maximum y-axis charge time, along with x-axis sensor locations and y-axis that correspond to the maximum charge times (maximum charge time sensor locations). Next, the microcontroller identifies sensor locations that are adjacent to the maximum charge time sensor locations and computes adjacent charge time ratios based upon their corresponding charge times. In turn, the microcontroller uses the largest adjacent charge time ratios and the maximum charge time sensor locations to compute and map an x-axis position and a y-axis position of a user's contact location on a two-dimensional grid. | 11-11-2010 |
20100300772 | DEPRESSABLE TOUCH SENSOR - An input device and a method for providing an input device are provided. The input device assembly includes a base, a sensor support, and a guide mechanism attached to the base and the sensor support. The guide mechanism allows for only substantially uniform translation of the sensor support towards the base in response to a force biasing the sensor support substantially towards the base. | 12-02-2010 |
20100300773 | HIGH SPEED MULTI-TOUCH TOUCH DEVICE AND CONTROLLER THEREFOR - A touch-sensitive device includes a touch panel, a drive unit, a sense unit, and a measurement unit. A touch applied to a node of the panel changes a capacitive coupling between two electrodes (a drive electrode and a sense electrode) of the touch panel. The drive unit delivers a drive signal, which may comprise one or more drive pulses, to the drive electrode. The sense unit couples to the sense electrode, and generates a response signal that includes a differentiated representation of the drive signal. The amplitude of the response signal is responsive to the capacitive coupling between the electrodes, and is measured to provide an indication of a touch at the node. | 12-02-2010 |
20100307840 | SIGNAL PROCESSING CIRCUIT FOR ELECTROSTATIC CAPACITOR TYPE TOUCH SENSOR - The invention realizes certainly detecting two or more positions on a touch panel that are touched at the same time. A drive circuit selects one from X lines, and supplies an alternating drive voltage to the selected line. A multiplexer selects a first sense line and a second sense line from Y lines that extend to cross the X lines. A charge amplifier outputs an output voltage corresponding to a difference between a first capacitance between the first sense line and the X line selected by the drive circuit and a second capacitance between the second sense line and the X line selected by the drive circuit. A touch position is then detected based on the output voltage of the charge amplifier. | 12-09-2010 |
20100320009 | TOUCH PANEL - A touch panel includes a substrate, a touch-sensing circuit, a plurality of sensing signal transmission wires, a capacitance compensation conductor, and a sensing signal readout circuit. The touch-sensing circuit is disposed on the substrate. The sensing signal transmission wires are disposed on the substrate and electrically connected to the touch-sensing circuit. The capacitance compensation conductor is disposed over the sensing signal transmission wires. Capacitance of each sensing signal transmission wire is C | 12-23-2010 |
20100326744 | TOUCH PANEL - A touch panel has a panel capacitor, a first capacitor, and a second capacitor. The panel capacitor and the first capacitor are charged and discharged cyclically according to a first phase signal and a second phase signal, such that an input voltage associated with the panel capacitor and the first capacitor is applied to a control circuit. The control circuit charges and discharges a second capacitor based on the input voltage and a reference voltage to compensate the difference between the input voltage and the reference voltage. The capacitance of the panel capacitor could be calculated based on the frequency of charging and discharging the second capacitor. | 12-30-2010 |
20110005845 | TOUCH SENSING DEVICE HAVING CONDUCTIVE NODES - A touch sensing device having conductive nodes is disclosed. The device can include a first structure having one or more conductive electrodes disposed on a surface opposite the structure's touchable surface and a second structure having one or more conductive nodes disposed on a surface. The two surfaces can be placed with the conductive electrodes and conductive nodes facing each other in close proximity so that the electrodes and the nodes can form capacitive elements for sensing a touch on the touchable surface. Separately disposing the conductive nodes from the touchable surface structure can make the touch sensing device thin. An example touch sensing device can be a click wheel. | 01-13-2011 |
20110017523 | SINGLE-LAYER TOUCH SENSORS - A two-dimensional capacitive sensor device comprises first, second, and third sensor electrodes. The first sensor electrode has a varying width along a first direction, a maximum width at a first edge along the first direction, and a minimum width at a second edge along the first direction. The second sensor electrode has a varying width along the first direction and substantially identical widths at the first edge and second edge. The third sensor electrode has a varying width along the first direction, a minimum width at the first edge, and a maximum width at the second edge. The first, second, and third sensor electrodes have substantially equal surface area and are arranged in a first sensor cell with the second disposed between the first and third sensor electrodes. The two-dimensional capacitive sensor device comprises a plurality of sensor cells disposed in a repeated fashion in a single layer. | 01-27-2011 |
20110017524 | DUAL-SUBSTRATE CAPACITIVE TOUCH PANEL - A touch panel has a first substrate, a second substrate, a frame adhesive and multiple multi-layer conductive wires. The first substrate has first axis electrode strings and second axis transparent electrodes formed on a surface. The second substrate is disposed opposite to the first substrate and has bridging members and bridging connectors formed on each of the bridging members and connected to the second axis electrodes of the first substrate. The frame adhesive connects the first substrate and the second substrate. The multi-layer conductive wires are electrically connected to the first axis electrode strings and the second axis transparent electrodes and connect to a flexible printed circuit board. With the bridging members and bridging connectors formed on another substrate, a mask process of forming insulating members can be avoided, and a manufacture process is simplified with associated cost reductions. | 01-27-2011 |
20110017525 | METHOD AND APPARATUS FOR SENSING PROXIMITY TOUCH - Method and apparatus for sensing a proximity touch by accumulating delays generated by the proximity touch for at least a predetermined number of times. Compared to general touches, a proximity touch generates a smaller size of delay than the minimum size that a sensor can sense, so it is difficult for conventional touch sensors to sense a proximity touch. Accordingly, for detection of a proximity touch, the proximity touch should generate a larger size of delay than the minimum size that a touch sensor can sense, and to this end, delays generated by a proximity touch are accumulated for at least a predetermined number of times. Then, the accumulated delays are compared with the minimum size that the sensor can sense so as to determine whether there is a proximity touch. | 01-27-2011 |
20110031041 | CIRCULAR SINGLE-LAYER TOUCH SENSORS - A two-dimensional capacitive sensor device comprises a sensor substrate with a plurality of wedge shaped sensor cells arranged in a single-layer circular pattern proximal to the substrate. The plurality of wedge shaped sensor cells are arranged in a rotationally symmetric pattern about a center of the single-layer circular pattern. A sensor cell of the plurality of wedge shaped sensor cells comprises a first sensor electrode and a second sensor electrode separated by a border. The first and second sensor electrodes are configured for detecting changes in capacitance caused by one or more input objects. The first and second sensor electrodes become substantially thinner in width approaching the center of the single-layer circular pattern than at a distance further from the center. A sensor circuitry is communicatively coupled with the sensor electrodes of the sensor cell and the sensor circuitry is configured to interpret the changes in capacitance. | 02-10-2011 |
20110031042 | TOUCH DETECTING DEVICE AND METHOD THEREOF - A touch detecting device comprises at least one driving circuit, a plurality of conductive lines and at least one sensing circuit. The originally available conductive lines of a touch panel are used to detect a finger touch by means of detecting a current leakage through the finger to the ground. Thus, the invention can reduce the hardware cost, avoid noise interference and correctly respond to a finger touch | 02-10-2011 |
20110042153 | TOUCH SENSING DEVICE AND METHOD USING RANDOM SPREAD SPECTRUM SIGNAL - A touch sensing device and method for detecting a touch event of a sensing array are disclosed. In the present invention, a random duration square wave signal is used to modulate a current or voltage signal so as to generate a modulated driving signal for driving a row of the sensing array. The random duration square wave signal has cycles of different durations so that the modulated driving signal also has the same cycles with the different durations. A sensing signal is measured from a column, for example, of the sensing array. Touching information is extracted by using the random duration square wave signal to demodulate the sensing signal. | 02-24-2011 |
20110048812 | TWO-DIMENSIONAL POSITION SENSOR - A capacitive position sensor is provided having a touch-sensitive area defined by a single-layer of electrodes arranged in a pattern along two axes. The electrode pattern includes a plurality of units each occupying a portion of the touch sensitive area along one axis. Each unit has at least three lines of elongate electrodes spaced apart in the one axis and extending for a length parallel to the other axis. The three lines of elongate electrodes in each unit comprise at least one line of drive electrodes and two lines of sense electrodes or at least one line of sense electrodes and two lines of drive electrodes. Selected electrodes of each unit are arranged in interconnected groups, each group having electrodes from more than one line which have partially overlapping extents along their length. | 03-03-2011 |
20110048813 | TWO-DIMENSIONAL POSITION SENSOR - A capacitive position sensor is provided having a touch-sensitive area defined by a single-layer of electrodes arranged in a pattern along two axes. The electrode pattern includes a plurality of units each occupying a portion of the touch sensitive area along one axis. Each unit has at least three lines of elongate electrodes spaced apart in the one axis and extending for a length parallel to the other axis. The three lines of elongate electrodes in each unit comprise at least one line of drive electrodes and two lines of sense electrodes or at least one line of sense electrodes and two lines of drive electrodes. Selected electrodes of each unit are arranged in interconnected groups, each group having electrodes from more than one line which have partially overlapping extents along their length. | 03-03-2011 |
20110061949 | MEASURING BODY CAPACITANCE EFFECT IN TOUCH SENSITIVE DEVICE - Measuring an effect of body capacitance in a touch sensitive device is disclosed. This effect can be caused by poor grounding of a user or other objects touching the device or of the device itself. The device can operate in a stray capacitance mode to measure a body capacitance effect and in a normal mode to detect a touch on the device. During the stray capacitance mode, the device can obtain a body capacitance measurement from the device. During the normal mode, the device can obtain a touch measurement from the device. The device can calculate a body capacitance factor based on a ratio between the body capacitance measurement and the touch measurement and use the body capacitance factor to compensate for erroneous or distorted touch output values from the device. Various components of the device can be switchably configured according to the particular mode. | 03-17-2011 |
20110073383 | METHOD AND APPARATUS TO MEASURE SELF-CAPACITANCE USING A SINGLE PIN - A method for measuring capacitance in a sensor device using an internal reference circuit element(s), and without implementing additional circuitry and devices external to the sensor device, is described. In some embodiments a method uses an output pin of the sensor device and an internal reference capacitor of the sensor device to identify a touch applied to a touch point or electrode coupled to the touch sensor. The method applies reference voltages to charge the reference capacitor and measure a signal received from an electrode, wherein the touch sensor controls switching within the touch sensor to apply the reference voltages to the reference capacitor. | 03-31-2011 |
20110073384 | CAPACITIVE TOUCH SENSOR DEVICE CONFIGURATION SYSTEMS AND METHODS - Embodiments include capacitive touch sensors and methods for configuring capacitive touch sensors. A capacitive touch sensor embodiment includes an analog-to-digital converter (ADC) and a controller. The ADC receives an analog voltage signal from an electrode, and samples the analog voltage signal to produce a plurality of digital values. The controller performs a first charging process by supplying the electrode with a first charging current for a first charging interval, and the controller determines, based on the digital values, whether a first electrode voltage value meets a criteria. If not, the controller performs a configuration process that results in setting a second charging current and a second charging interval for the electrode which, in response to performing a second charging process, results in a second electrode voltage value that meets the criteria. | 03-31-2011 |
20110083911 | Capacitive Touch Sensing Apparatus and Detection Method Thereof - A capacitive touch sensing apparatus includes a plurality of sensing capacitor units, a control signal generation unit, a plurality of high impedance controllers, and a detection unit. The plurality of sensing capacitor units are utilized for generating a plurality of touch analog signals. The control signal generation unit is utilized for generating a plurality of control signals. The plurality of high impedance controllers are installed by intersections of a plurality of control signal lines and a plurality of signal transmission lines, where each of the high impedance controllers conducts a corresponding touch analog signal to a corresponding signal transmission line according to a corresponding control signal. The detection unit is utilized for determining whether a touch event occurs according to the conducted touch analog signal | 04-14-2011 |
20110100728 | INDUCING CAPACITANCE DETECTOR AND CAPACITIVE POSITION DETECTOR OF USING SAME - One aspect of the present invention relates to an inducing capacitance detector. In one embodiment, the inducing capacitance detector has an input terminal for receiving a supply voltage; a capacitive sensor array with a first output terminal and a second output terminal; an operational amplifier having an inventing input terminal electrically connected to the first output terminal of the capacitive sensor array, a non-inventing input terminal electrically connected to the second output terminal of the capacitive sensor array and the input terminal, and an output terminal for outputting an output signal, a feedback capacitor electrically connected between the inventing input terminal and the output terminal of the operational amplifier. | 05-05-2011 |
20110120784 | Methods and apparatus for performing capacitive touch sensing and proximity detection - Embodiments include methods and apparatus for performing capacitive touch sensing and proximity detection. Electrode selection circuitry establishes a first connection with an individual electrode of a plurality of individual electrodes in order to receive one or more first signals indicating a state of the individual electrode, and establishes second connections with a proximity electrode that comprises multiple ones of the plurality of individual electrodes in order to receive one or more second signals indicating a state of the proximity electrode. A processing system performs a first analysis on the first signals to determine whether to perform a first updating process for an individual electrode baseline value, and performs a second analysis on the second signals to determine whether to perform a second updating process for a proximity electrode baseline value. In an embodiment, the first analysis and the second analysis are different from each other. | 05-26-2011 |
20110127092 | POSITION APPARATUS FOR TOUCH DEVICE AND POSITION METHOD THEREFOR - A position method for a touch device is provided. In the position method, first, a controller is provided to set a boundary region on a touch panel of the touch device. When a touch medium touches the touch panel, the controller detects whether a peak capacitance detection differential value of a plurality of capacitance detection differential values is occurred in the boundary region. Besides, the controller performs an interpolation calculation to obtain a coordinate of a touch point for the touch medium according to the peak capacitance detection differential value and a first adjacent capacitance detection differential value which is adjacent to the peak capacitance detection differential value. | 06-02-2011 |
20110132670 | CAPACITIVE TOUCH DEVICE STRUCTURE - A capacitive touch device structure includes a first transparent substrate, a second transparent substrate, a picture layer at the periphery of a lower surface of the first transparent substrate, first and second transparent conductive thin films formed on corresponding surfaces of the two transparent substrates respectively, a plurality of first and second circuits, and an adhesive layer for laminating the first and second transparent substrates. After the corresponding surfaces of the capacitive touch device are attached, the first or second transparent conductive thin film and the first or second circuit are considered to be in the same plane, so as to achieve the effects of reducing the thickness of the capacitive touch device, improving the light transmittance effectively, minimizing the number of layers of the first or second transparent conductive thin film and the first or second circuit, simplifying the manufacturing process and improving the yield rate. | 06-09-2011 |
20110139517 | INPUT DEVICE - An input device includes a thin film substrate on which a fixed electrode is formed, and a movable electrode formed of a conductive material, the fixed electrode including a capacitance detection electrode and a connection section, the movable electrode including a displacement section that is disposed to be opposite to the capacitance detection electrode and deformed by a pressing force, and a stationary section that is connected to the connection section, the input device detecting a change in capacitance that occurs when the displacement section has been pressed. The input device has a reduced thickness, and can be inexpensively produced by reducing the number of parts. Moreover, the input device can be easily incorporated in an electronic instrument. | 06-16-2011 |
20110147101 | COMPENSATING FOR MULTI-TOUCH SIGNAL BIAS DRIFT IN TOUCH PANELS - A system and method provide for selecting a sensor in an array of capacitive sensors, determining a row intensity for the selected sensor, and determining a column intensity for the selected sensor. The system and method may also provide for compensating the selected sensor for multi-touch signal bias drift, wherein the compensating may include adjusting an intensity of the selected sensor based on the row and column intensity. | 06-23-2011 |
20110155479 | POINTING MEMBER, POSITION DETECTION APPARATUS AND POSITION DETECTION METHOD - Methods and apparatus are provided to further facilitate detection not only of a position on a position detector pointed to by a pointing member, but also of information other than the position information such as pen pressure applied to the pointing member, in a position detection apparatus of the electrostatic coupling type. In one embodiment, a pointing member includes a first electrode substantially in the form of a rod, a substantially cylindrical second electrode disposed in such a manner as to surround the first electrode, and a transmission signal production section for producing a signal of a first frequency f | 06-30-2011 |
20110168458 | Detecting apparatus of capacitive touch panel and the method therefor - The invention relates to a detecting apparatus of a capacitive touch panel for detecting at least one touched position executed by a user on the capacitive touch panel including a plurality of sensing elements. The detecting apparatus comprises a first detecting module, a judging module, a second detecting module and a determining module. The first detecting module detects the plurality of sensing elements to generate a plurality of first detecting signals. The judging module generates a plurality of judging signals according to the plurality of first detecting signals. The second detecting module detects at least one sensing element of the plurality of sensing elements according to the plurality of judging signals to generate at least one second detecting signal. The determining module determines the at least one touched position executed by the user on the capacitive touch panel according to the at least one second detecting signal. | 07-14-2011 |
20110186359 | Touch Panel Sensing Circuit - In a capacitance sensing analog circuit of a touch panel sensing circuit, by raising a magnitude of a current flowing through a sensing capacitor to form an amplified sensing capacitance, while sensing the amplified sensing capacitance with the aid of pulse width modulation signals, higher resolution of the original sensing capacitance may thus be achieved. Besides, by using a self-calibrating capacitance sensing circuit on the touch panel sensing circuit, linear errors and DC errors of an output signal of the capacitance sensing analog circuit may be filtered off, and thereby resolution of a capacitance amplifying ratio may be effectively raised so as to relieve errors within the capacitance amplifying ratio caused by noises. | 08-04-2011 |
20110192657 | Capacitive touch panel with multiple zones - In a capacitive touch panel having touch cells arranged in a two-dimensional array and defined by two coordinates, the present invention provides a third coordinate. In particular, the touch cells in a row are electrically connected a first sensing element and the touch cells in a column are electrically connected in a second sensing element. The first sensing elements can be arranged into two or more touch zones. Each of the touch zones has a zone sensing element for defining the zone coordinate. Some of the first sensing elements in one touch zone are electrically connected to the corresponding first sensing elements in the other touch zones in series. As such, the number of terminals connected to the first sensing elements can be reduced. | 08-11-2011 |
20110232976 | CAPACITIVE TOUCH PAD WITH ADJACENT TOUCH PAD ELECTRIC FIELD SUPPRESSION - A capacitive touch pad includes an electrode board, a plurality of capacitive touch sensor pads, and a cover. The electrode board has touch sensor circuitry formed thereon. The plurality of capacitive touch sensor pads is formed in an array over the touch pad circuitry of the printed circuit board. The plurality of capacitive touch sensor pads is spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads. The cover is positioned over and covering substantially all of the plurality of capacitive touch sensor pads. The cover has a first cavity with a first depth, where the first cavity is shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads to dampen capacitive coupling between adjacent touch pads. | 09-29-2011 |
20110278078 | INPUT DEVICE WITH FORCE SENSING - Devices and methods are provided that utilize a first electrode disposed on a first substrate and a second electrode disposed on a second substrate, where the first electrode and the second electrode define at least part of a variable capacitance. A third substrate is arranged between the first substrate and the second substrate, the third substrate having an opening arranged such that at least a portion of the first electrode and the second electrode overlap the opening. A transmission element is provided that partially overlaps the opening. The transmission element is physically coupled to the second electrode such that a force biasing the transmission element causes the second electrode to deflect relative to the first electrode, thus changing the variable capacitance. A measurement of the variable capacitance may then be used to determine force information. | 11-17-2011 |
20110308866 | Sensor Measurement System Using Pulsed Current Signals - The disclosed invention provides a structure and method for easily measuring capacitive and/or resistive components of a sensor system. In one embodiment, the structure comprises a signal generator configured to output a load current to a measurement element containing measurement sensor elements and a parasitic capacitance. A controllable excitation voltage is generated, via integration of the load current on the parasitic capacitance, and output to the measurement sensor elements having capacitive and resistive components. The controlled voltage through the measurement device may be manipulated to cause the capacitive and resistive components to exhibit a transient effect. The resulting output current, provided from the measurement device therefore has transient response characteristics (e.g., the settling time, amplitude) that can be selectively measured by a measurement circuit to easily determine values of the capacitive and resistive measurement elements. Furthermore, dedicated demodulation techniques may be used to measure the capacitive and resistive components. | 12-22-2011 |
20120043140 | TOUCH SENSING - In one embodiment, an apparatus comprises a plurality of capacitors, each having a first electrode and a second electrode. The apparatus includes charging circuitry coupled to the first electrodes and sensing circuitry coupled to the second electrodes, the sensing circuitry configured to detect changes in capacitance across the capacitors responsive to movement of an input object relative to the apparatus. Interpolating circuitry identifies which one of the capacitors is nearest to the input object according to the detected capacitance changes. | 02-23-2012 |
20120043141 | Toothed Slider - An example method includes measuring a capacitance variation of a first conductive element and a capacitance variation of a second conductive element. The example method includes calculating a centroid position through the measured capacitance variation of the first conductive element and the measured capacitance variation of the second conductive element. A conductive sub-element of the first conductive element may be interleaved with a conductive sub-element of the second conductive element. The conductive sub-element of the first conductive element and the conductive sub-element of the second conductive element may each have a varying width. | 02-23-2012 |
20120261199 | HIERARCHICAL SENSING METHOD - A hierarchical sensing method for a touch panel is disclosed. The touch panel has a matrix of points for detecting a touch or touches. The method includes dividing the points into a plurality of blocks; sensing first data from the respective blocks; determining which one or ones of the blocks are touched blocks according to the first data; sensing second data from each point of the touched blocks; and determining which one or ones of the points are touched points according to the second data. By using the method of the present invention, fast sensing speed and high sensing accuracy can be both achieved. | 10-18-2012 |
20120298428 | LAYOUT STRUCTURE OF CAPACITIVE TOUCH PANEL AND MANUFACTURING METHOD THEREOF - A layout structure of a capacitive touch panel including a conductive layer, an insulation layer, and a plurality of electric bridges is provided. The conductive layer disposed on a substrate includes a plurality of first touch units and a plurality of second touch units. The first touch units are electrically connected with each other through a plurality of connecting sections to form a plurality of first touch series extended along a first direction. The insulation layer is disposed on the conductive layer. Each electric bridge includes a compensation portion, a first crossover portion, and a second crossover portion. The compensation portions are respectively disposed on the connecting sections. The first and second crossover portions are disposed on the insulation layer. The second touch units are electrically connected with each other through the first and second crossover portions to form a plurality of second touch series extended along a second direction. | 11-29-2012 |
20130032414 | Touch Sensor for Curved or Flexible Surfaces - In one embodiment, an apparatus includes a substantially flexible substrate configured to bend at an edge between a first surface and a second surface of a device. The edge has an angle of deviation between the first and second surfaces of at least approximately 45°. The apparatus includes a touch sensor disposed on the substantially flexible substrate and configured to bend with the substantially flexible substrate at the edge between the first and second surfaces. The touch sensor includes drive or sense electrodes made of flexible conductive material configured to bend with the substantially flexible substrate at the edge between the first and second surfaces. The touch sensor has at least one active area on each of the first and second surfaces. | 02-07-2013 |
20130037330 | Touch Sensing With A Common Driver - In one embodiment, an apparatus includes a touch sensor including drive electrodes. The apparatus also includes one or more computer-readable non-transitory storage media coupled to the touch sensor that embody logic that drives all the drive electrodes substantially simultaneously with a common drive signal. | 02-14-2013 |