Patent application number | Description | Published |
20080284498 | Type of Charge Pump Apparatus and Power Source Circuit - This invention discloses charge pump apparati, where a charge pump apparatus, including a positive charge pump circuit and a negative charge pump circuit, providing multiple positive and negative voltages, comprises: a capacitor set shared by said positive charge pump circuit and said negative charge pump circuit; multiple electronic switches connected to said capacitor set and a plurality of voltage sources; multiple output capacitors connected to selected ones of said multiple electronic switches and one or more output terminals; and a non-overlapping time sequence that controls the on and off states of said multiple electronic switches; wherein under the control of said non-overlapping time sequence, corresponding electronic switches are turned on and off to control the output of the positive and negative voltages provided by said output capacitors to generate output voltages that are pre-determined multiples of the one or more input voltages. With this invention, coupling capacitors are shared during the processes of charging and discharging, and operate at alternating intervals through time sequence-control. As a result, both positive and negative output voltages can be simultaneously adjusted to provide different boost levels. The charge pump is both low in cost and has a design that is simple and easy to produce. | 11-20-2008 |
20080291191 | Power source circuits for driving liquid crystal displays - This invention is suitable for use in the field of integrated circuits. It provides a type of power source circuit. Said power source circuit includes: a charge pump circuit used to operate the charge pump to produce driving voltages; a first control circuit, used in the closed-loop control of said charge pump circuit to produce a positive high voltage; a bias-ratio circuit, used with the positive high voltage and the zero-potential voltage produced by the first control circuit to produce a positive sub-high voltage and a lowest positive high voltage; and a second control circuit, used in accordance with the positive sub-high voltage and the lowest positive high voltage produced by said bias-ratio circuit in the closed-loop control of said charge pump circuit to produce a negative high voltage. Using this invention, the system contains no voltage higher than the liquid crystal's driving voltages, and also does not contain any lower negative voltage than the liquid crystal's highest negative driving voltage, thereby reducing the circuit's electrical consumption. | 11-27-2008 |
20090108808 | Battery Protection Mechanism - The present invention teaches methods and systems for detecting internal battery abnormalities during charging and discharging states. The embodiments of the invention includes a circuit for determining charging and/or discharging state of the battery, a circuit for sampling the battery voltage at sequential time points, a circuit for measuring the decline of the voltage, a counter for counting T | 04-30-2009 |
20090147114 | Circuits and Methods for Image Signal Sampling - This invention discloses a type of image signal sampling circuits and methods. The circuit includes: a signal acquisition unit, a column read out unit, and a working module control circuit. The control circuit includes: a control unit, a source column switch group, a ground column switch group, and a between-column switch group. Each sampling column circuit is equipped with a source column switch and a ground column switch. The source column switch is connected between the inputs of the signal source and the signal acquisition unit. The ground column switch is connected between the ground and the bottom of the signal acquisition unit. The input of the column read out unit is connected to the input of the signal acquisition unit and the output is used to send out the sampled signal. A between-column switch is installed between the input of a front column signal acquisition unit and the bottom of a back signal acquisition unit. The control unit is used to control the switch in each switch group for connected or disconnected operation according to the sampling working module. Employing this invention can realize gain in the image sensor signal, improvement with circuit structure, achieving minimal chip area, and lowered cost. | 06-11-2009 |
20090167747 | TFT-LCD DRIVER CIRCUIT AND LCD DEVICES - Thin film transistor liquid crystal display (TFT-LCD) driver circuit having a source drive buffer with an operational power amplifier having two differential amplifiers capable of alternating operation according to timing and bias voltage signals. The differential amplifiers are further capable of functioning as a voltage follower by inputting and outputting voltage signals from a digital to analog converter for charging display points. The TFT-LCD driver circuit may also be incorporated within a LCD device. | 07-02-2009 |
20090278811 | Touch-Sensitive Screen and a Touch-Sensitive Device Using the Same - A touch-sensitive screen and a resistance touch-sensitive device using the same, wherein said screen comprises: an insulating substrate, a rectangular conducting layer formed on said insulating substrate, a conducting layer electrode array formed on the four edges of said conducting layer, a conductive coat formed on said conducting layer, and a conductive coat electrode wherein, at least 3 pairs of the conducting layer electrodes are deployed in said conducting layer electrode array; each pair of the conducting layer electrodes are deployed on the parallel edges of the conducting layer symmetrically; and the conducting layer electrode is set on each edge of the conducting layer. As the conducting layer electrodes are deployed symmetrically on the parallel edges of the conducting layer, the electric filed lines tends to be evenly distributed when the voltage is loaded onto the edges of the conducting layer; thus the linearity of the equipotential lines is enhanced. | 11-12-2009 |
20100051433 | Multi-point touch-sensitive device - A touch-sensitive device includes a first conductive layer and a second conductive layer. The first conductive layer has at least a first edge and a second edge. The second edge is substantially parallel to the first edge and there is a voltage drop across the first conductive layer between the first edge and the second edge when a power supply is coupled to the first edge and the second edge. The second conductive layer is separated from the first conductive layer by a spacer layer. The second conductive layer includes multiple electrically isolated conductive regions. When a plurality of the conductive regions are in contact with the first conductive layer simultaneously, each of the plurality of the conductive regions generates an output signal and the magnitude of the output signal depends at least in part upon the conductive region's position relative to the first and second edges. | 03-04-2010 |
20100053093 | Multi-point touch-sensitive system - A multi-touch detection system includes a touch-sensitive device, a microcontroller coupled to the touch sensitive device, and an electronic application coupled to the microcontroller. The touch-sensitive device includes multiple electrically isolated conductive regions and the conductive regions are configured to detect multiple contacts from a user simultaneously and generate respective output signals for the multiple user contacts. The microcontroller is configured to receive the output signals from the conductive regions and generate one or more control signals in response to the output signals. The electronic application includes a screen displaying multiple human-machine interactive objects and a signal processor. The signal processor is configured to receive the control signals from the microcontroller and alter the appearance of the human-machine interactive objects on the screen in accordance with the control signals. | 03-04-2010 |
20100053094 | Method of operating a multi-point touch-sensitive system - A computer-implemented method in connection with a multi-touch detection system is disclosed. The multi-touch detection system includes a touch-sensitive device, a microcontroller coupled to the touch sensitive device, and an electronic application coupled to the microcontroller. The touch-sensitive device has multiple electrically isolated conductive regions. In response to detecting multiple simultaneous contacts a user has with the conductive regions, the touch-sensitive device generates multiple output signals, one signal for each of the multiple simultaneous contacts, and transmits the output signals to the microcontroller. The microcontroller is configured to generate one or more control signals in response to the output signals and transmit the control signals to the electronic application. The electronic application includes a screen displaying multiple human-machine interactive objects. In response to the control signals, the electronic application alters the appearance of the human-machine interactive objects on the screen. | 03-04-2010 |
20100262424 | Method of Eliminating Background Noise and a Device Using the Same - The present invention provides a method of eliminating background noise and a device using the same. The method of eliminating background noise comprises the steps of: detecting an effective value of a received audio signal, and generating an average power signal of the received audio signal; generating a noise eliminating control signal by comparing the average power signal with a first threshold; and eliminating the noise, and amplifying the voice signal using the noise eliminating control signal. A device of eliminating background noise comprises a detecting unit, which is configured to detect an effective value, and generate an average power signal of the received audio signal; a first signal generating unit, which is configured to generate a noise eliminating control signal; and an amplifying unit, which is configured to eliminate the noise, and amplify the voice signal. | 10-14-2010 |
20110025615 | Touchpad with a Double-Layer Printed Circuit Board Structure - The present invention provides a touchpad with a double-layer printed circuit board structure. The touchpad comprises an upper layer, a bottom layer, a first conductor; and a second conductor; wherein the upper layer is configured to act as a touch-sensitive zone, and comprises a plurality of first conductive units, a first conductive wire and a plurality of second conductive units; the bottom layer comprises a wire connecting zone and a component zone, wherein the wire connecting zone further includes a second conductive wire and a connecting line configured to be electrically coupled to the component zone; and the first conductor and the second conductor are configured to connect the upper layer to the bottom layer; wherein the first and the second conductive units are each serially-connected to form a first touch-sensitive line and a second touch-sensitive line, respectively. | 02-03-2011 |
20110026733 | DEVICE FOR CANCELLING BACKGROUND NOISE AND METHOD THEREOF - A method for cancelling background noise of an audio device comprises determining characteristic values of an audio signal to construct a characteristic signal reflecting a change trend of the audio signal, multiplying the determined characteristic signal with the audio signal to construct a multiplication signal, and amplifying the multiplication signal. | 02-03-2011 |
20120024838 | BATTERY HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING USING RESONANCE COMPONENTS IN SERIES - According to certain embodiments, a battery heating circuit is provided, comprising a switch unit | 02-02-2012 |
20120025754 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES BASED ON CHARGE BALANCING - Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E | 02-02-2012 |
20120025755 | CIRCUITS AND METHODS FOR HEATING BATTERIES IN PARALLEL USING RESONANCE COMPONENTS IN SERIES - Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery and a second battery; the heating circuit comprises a first switch unit, a second switch unit, a damping component R | 02-02-2012 |
20120025756 | CIRCUITS AND METHODS FOR HEATING BATTERIES IN SERIES USING RESONANCE COMPONENTS IN SERIES - Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery (E | 02-02-2012 |
20120025772 | BATTERY HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES - According to certain embodiments, a battery heating circuit comprises a switch unit | 02-02-2012 |
20120025774 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 02-02-2012 |
20120025775 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES BASED ON CURRENT LIMITING AND VOLTAGE INVERSION WITH BI-DIRECTIONALITY - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 02-02-2012 |
20120025776 | BATTERY HEATING CIRCUITS AND METHODS WITH RESONANCE COMPONENTS IN SERIES USING VOLTAGE INVERSION - According to some embodiments of the present invention, a battery heating circuit comprises a switch unit | 02-02-2012 |
20120025777 | BATTERY HEATING CIRCUITS AND METHODS WITH RESONANCE COMPONENTS IN SERIES USING ENERGY TRANSFER - According to some embodiments, a battery heating circuit, comprising a switch unit | 02-02-2012 |
20120025778 | BATTERY HEATING CIRCUITS AND METHODS WITH RESONANCE COMPONENTS IN SERIES USING ENERGY TRANSFER AND VOLTAGE INVERSION - According to certain embodiments, a battery heating circuit, comprising a switch unit | 02-02-2012 |
20120025779 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES BASED ON CURRENT LIMITING AND VOLTAGE INVERSION WITH BI-DIRECTIONALITY AND COMMON INDUCTANCE - Certain embodiments of the present invention provide a battery heating circuit, wherein: a battery E, a damping component R | 02-02-2012 |
20120025780 | HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES AND FREEWHEELING CIRCUIT COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit ( | 02-02-2012 |
20120025781 | BATTERY HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES AND MULTIPLE CHARGE STORAGE COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units ( | 02-02-2012 |
20120025782 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES AND BRIDGE CHARGE STORAGE COMPONENTS - According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit ( | 02-02-2012 |
20120025783 | BATTERY HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES AND CURRENT LIMITING COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 02-02-2012 |
20120031890 | BATTERY HEATING CIRCUITS AND METHODS WITH RESONANCE COMPONENTS IN SERIES USING VOLTAGE INVERSION AND FREEWHEELING CIRCUIT COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit ( | 02-09-2012 |
20120032642 | BATTERY HEATING CIRCUITS AND METHODS WITH RESONANCE COMPONENTS IN SERIES USING VOLTAGE INVERSION BASED ON PREDETERMINED CONDITIONS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit ( | 02-09-2012 |
20120161711 | BATTERY HEATING CIRCUITS AND METHODS USING TRANSFORMERS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit ( | 06-28-2012 |
20120279951 | BATTERY HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES AND MULTIPLE CHARGE STORAGE COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units | 11-08-2012 |
20120280658 | HEATING CIRCUITS AND METHODS BASED ON BATTERY DISCHARGING AND CHARGING USING RESONANCE COMPONENTS IN SERIES AND FREEWHEELING CIRCUIT COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 11-08-2012 |
20120280659 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES AND BRIDGING CHARGE STORAGE COMPONENTS - According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit | 11-08-2012 |
20120299551 | BATTERY HEATING CIRCUITS AND METHODS USING TRANSFORMERS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 11-29-2012 |
20120306432 | BATTERY HEATING CIRCUITS AND METHODS USING RESONANCE COMPONENTS IN SERIES BASED ON CHARGE BALANCING - Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E | 12-06-2012 |
20130127398 | CIRCUITS AND METHODS FOR HEATING BATTERIES IN SERIES USING RESONANCE COMPONENTS IN SERIES - Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery E | 05-23-2013 |
20130134146 | BATTERY HEATING CIRCUITS AND METHODS USING VOLTAGE INVERSION AND FREEWHEELING CIRCUIT COMPONENTS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 05-30-2013 |
20130134945 | BATTERY HEATING CIRCUITS AND METHODS USING VOLTAGE INVERSION BASED ON PREDETERMINED CONDITIONS - Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit | 05-30-2013 |
20130141032 | CIRCUITS AND METHODS FOR HEATING BATTERIES IN PARALLEL USING RESONANCE COMPONENTS IN SERIES - Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery and a second battery; the heating circuit comprises a first switch unit, a second switch unit, a damping component R | 06-06-2013 |
20140329113 | Electric Vehicle Running Control System - An electric vehicle running control system is provided. The electric vehicle running control system comprises a heating circuit coupled with an in-vehicle battery and configured to heat the in-vehicle battery. The vehicle running control system further comprises a load capacitor and a first current storage element. The first current storage element may be coupled with the load capacitor and the heating circuit respectively configured to reduce interference between the heating circuit and the load capacitor. | 11-06-2014 |