Patent application number | Description | Published |
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 |
20110169814 | DIGITAL DRIVING CIRCUITS, METHODS AND SYSTEMS FOR LIQUID CRYSTAL DISPLAY DEVICES - A method may include controlling a display device in at least first mode by varying a correlation between display driver signals applied across display segments within the display device; wherein the display driver signals vary between substantially only two levels, and a display segment is activated when an average voltage magnitude across the segment over a time period exceeds a threshold value. | 07-14-2011 |
20120068964 | CAPACITIVE STYLUS FOR A TOUCH SCREEN - A system comprising a sensing device and a capacitive sense array configured to track the position of a stylus and synchronize the capacitive sense array to the stylus transmit signal. The system is configured to track the position of both a stylus and a passive touch object. The system is further configured to track the position of the stylus using self capacitance sensing and track the position of the passive touch object using mutual capacitance sensing. The system further configured to modulate the stylus transmit signal to include additional data to support additional stylus functions. | 03-22-2012 |
20120154324 | Predictive Touch Surface Scanning - A method for locating a conductive object at a touch-sensing surface may include detecting a first resolved location for the conductive object at the touch-sensing surface based on a first scan of the touch-sensing surface, predicting a location for the conductive object, and determining a second resolved location for the conductive object by performing a second scan of a subset of sensor elements of the touch-sensing surface, wherein the subset of sensor elements is selected based on the predicted location of the conductive object. | 06-21-2012 |
20130015798 | REDUCED ELETROMAGNETIC INTERFERENCE FOR PULSE-WIDTH MODULATION - A method and apparatus to drive a load using a pulse-width modulated (PWM) signal and spread a spectrum of the PWM signal across a plurality of frequencies while maintaining a constant duty cycle for the load. | 01-17-2013 |
20130100071 | Predictive Touch Surface Scanning - A method for locating a conductive object at a touch-sensing surface may include detecting a first resolved location for the conductive object at the touch-sensing surface based on a first scan of the touch-sensing surface, predicting a location for the conductive object, and determining a second resolved location for the conductive object by performing a second scan of a subset of sensor electrodes of the touch-sensing surface, wherein the subset of sensor electrodes is selected based on the predicted location of the conductive object. | 04-25-2013 |
20130141416 | DIGITAL DRIVING CIRCUITS, METHODS AND SYSTEMS FOR LIQUID CRYSTAL DISPLAY DEVICES - A method may include generating display driver signals that vary between only two levels and applying the display driver signals to opposing electrodes of a display segment within a display device. The method varies a correlation between the display driver signals to select or de-select the display segment based on an average voltage magnitude across the display segment over a time period. The display segment is activated when the average voltage magnitude exceeds a threshold value. | 06-06-2013 |
20130169294 | DEVICES AND METHODS HAVING CAPACITANCE SENSE STRUCTURE FORMED OVER HOUSING SURFACE - A capacitance sensing system can include at least a first conductive pattern formed on a first surface of a housing of an electronic device; and a capacitance sensing circuit electrically connected to the first conductive pattern. | 07-04-2013 |
20130225072 | METHOD AND APPARATUS FOR DATA TRANSMISSION VIA CAPACITANCE SENSING DEVICE - Embodiments described herein provide methods, devices, and systems for a touch sensor, or capacitive sensing device, interact with external objects. One method utilizes a capacitive profile on the external object. Another method involves the use of a capacitive sensor array for wireless communication. | 08-29-2013 |
20130278307 | INTELLIGENT POWER SUPERVISOR - An intelligent power-on reset circuit in accordance with one embodiment of the invention can include a programmable voltage divider. The intelligent power-on reset circuit can also include a comparator that is coupled to the programmable voltage divider and that is coupled to receive a reference voltage. Furthermore, the intelligent power-on reset circuit can include a processing element that is coupled to the programmable voltage divider. The processing element can be coupled to receive programming for controlling a characteristic of the intelligent power-on reset circuit. The processing element can be for dynamically changing the programming during operation of the intelligent power-on reset circuit. | 10-24-2013 |
20140002112 | DEVICES AND METHODS HAVING CAPACITANCE SENSE STRUCTURE FORMED OVER HOUSING SURFACE | 01-02-2014 |
20140043251 | Dual Scanning with Automatic Gain Control - A method and apparatus perform a first scan of an input device and determine that a first signal profile received through the first scan is outside a range of a reference signal profile. The method and apparatus perform a second scan of the input device responsive to the first signal profile being outside the range of the reference signal profile and use a second signal profile received through the second scan to detect a presence of an input object at least proximate to the input device. | 02-13-2014 |
20140160030 | SENSOR SYSTEM AND METHOD FOR MAPPING AND CREATING GESTURES - A computing system includes a sensor configured to detect user inputs. The system further includes a processor configured to receive a detected first user input from the sensor. The processor further receives a detected second user input from the sensor. In response, the processor assigns a command to the first user input based on the second user input. | 06-12-2014 |
20140192030 | STYLUS AND RELATED HUMAN INTERFACE DEVICES WITH DYNAMIC POWER CONTROL CIRCUITS - A device comprising a body comprising an elongated housing with at least a first conductive tip formed at a distal end and at least one sense electrode on the body; a capacitance sense circuit disposed within the housing and configured to sense a capacitance of the sense electrode to generate a proximity result in response to contact with a human body; and a signal generator circuit disposed within the housing and configured to activate a position signal in response to the proximity result, the position signal being driven at the tip of the device | 07-10-2014 |
20140300337 | INTELLIGENT VOLTAGE REGULATOR - A voltage regulator includes a programming interface via which programming instructions may be applied to a processor of the voltage regulator. The voltage regulator operates the processor according to the programming instructions to select one of multiple active internally-generated analog voltage levels to determine an output voltage level of the voltage regulator. | 10-09-2014 |