Patent application number | Description | Published |
20110199125 | VOLTAGE COMPARATOR, LIQUID CRYSTAL DISPLAY DRIVER HAVING THE SAME AND TRANSITION ACCELERATION METHOD THEREOF - A voltage comparator includes an input portion, an output portion, and a diverting portion. The input portion accepts a first voltage and a second voltage and then outputs a first current based on the first voltage and outputs a second current based on the second voltage. The output portion outputs a result signal based on a difference between the first current and the second current. The diverting portion is electrically connected to the input portion and diverts a portion of the higher current amongst the first current and the second current. | 08-18-2011 |
20120075263 | DRIVING CIRCUIT AND OPERATING METHOD THEREOF - A driving circuit and an operating method thereof are disclosed. The driving circuit includes at least one first channel, at least one second channel, a selecting module, and at least one switching module. The selecting module is coupled to input ends of the first channel and the second channel. The at least one switching module is coupled to output ends of the at least one first channel and the at least one second channel. The selecting module and the switching module will perform corresponding switching actions to make the driving circuit selectively under a first operating mode or a second operating mode. | 03-29-2012 |
20120169657 | TOUCH SENSING APPARATUS - The present invention provides a touch sensing apparatus including a plurality of pins, a logic control module, and at least one driving/sensing control module. The logic control module generates a plurality of control signals having different control timings. Each driving/sensing control module is coupled with the logic control module and the pins, wherein the driving/sensing control module receives a first control signal of the control signals from the logic control module and controls the pins to execute a plurality of pin functions according to a first control timing of the first control signal, so that the pins simultaneously sense a plurality of analog data from a conductive thin film sensor. | 07-05-2012 |
20120169661 | TOUCH SENSING APPARATUS - A touch sensing apparatus is disclosed. The touch sensing apparatus includes a logic control module, at least one storage control module, and at least one decoding control module. The logic control module is used to generate a plurality of control signals having different control timings. The plurality of control signals includes a storage control signal and a decoding control signal. Each storage control module includes a plurality of storage capacitors, and respectively stores each of sensed voltages in different storage capacitors at different times according to a storage control timing of the storage control signal. The sensed voltages are analog data sensed from scan lines of an ITO sensor. The decoding control module is used to decode the sensed voltages stored in the storage capacitors according to a decoding control timing of the decoding control signal to output the decoded analog data. | 07-05-2012 |
20120169662 | TOUCH SENSING APPARATUS - A touch sensing apparatus is disclosed. The touch sensing apparatus includes a logic control module, at least one storage control module, and at least one decoding control module. The logic control module is used to generate a plurality of control signals having different control timings. The plurality of control signals includes a storage control signal and a decoding control signal. Each storage control module includes a plurality of storage capacitors, and respectively stores each of sensed voltages in different storage capacitors at different times according to a storage control timing of the storage control signal. The sensed voltages are analog data sensed from scan lines of an ITO sensor. The decoding control module performs analog adding process to the sensed voltages stored in the storage capacitors according to a decoding control timing of the decoding control signal to output decoded analog data with high signal-to-noise ratio (SNR). | 07-05-2012 |
20120176168 | SIGNAL CIRCUIT - A signal circuit includes a clock terminal for transmitting a reference clock and a data terminal for transmitting an input/output data. In an embodiment, the frequency of the reference clock is one-eighth of the bit rate of the input/output data. | 07-12-2012 |
20120249244 | OUTPUT BUFFER OF SOURCE DRIVER - An output buffer of a source driver is disclosed. The output buffer includes a buffer input, a buffer output, a differential input stage, a bias current source, an output stage, a compensation capacitor, and a comparator. The output stage and the comparator are both operated between an analog supply voltage (AVDD) and a half analog supply voltage (HAVDD), or both operated between the half analog supply voltage (HAVDD) and a ground voltage. The comparator compares an input signal with an output signal and outputs a control signal to the bias current source according to the compared result. | 10-04-2012 |
20120249245 | OUTPUT BUFFER OF SOURCE DRIVER - An output buffer of a source driver is disclosed. The output buffer includes a buffer input, a buffer output, a differential input stage, a bias current source, an output stage, a compensation capacitor, and a comparator. The output stage and the comparator are both operated between an analog supply voltage (AVDD) and a ground voltage (AGND). The comparator compares an input voltage and an output voltage and outputs a control signal to the bias current source according to the compared result to control a bias current outputted by the bias current source to enhance the slew rate of the output buffer. | 10-04-2012 |
20120256660 | SOURCE DRIVER AND RECEIVER THEREOF - A source driver and a receiver thereof are disclosed. A two-stage amplifier of the receiver includes a first-stage circuit and a second-stage circuit. The second-stage circuit includes a first switch, a second switch, a third switch, a first node, and a second node. The first switch is coupled between the first node and a ground end; the second switch is coupled between the second node and the ground end; the third switch is coupled between the first node and the second node. When the receiver wants to wake up from a power-saving mode to a normal operation mode, the first switch and the second switch are switched to the off-state according to a control signal at first; after a period of delay time, the third switch is also switched to the off-state according to a delayed control signal. | 10-11-2012 |
20120280966 | DISPLAY DRIVER AND FLICKER SUPPRESSION DEVICE THEREOF - A flicker suppression device applied in a display driver for preventing the output image data of the display driver from being affected by an electrostatic discharge (ESD) event is provided. The flicker suppression device includes an ESD detector and an output stage controller. The ESD detector is coupled to a first power wire of the display driver for determining whether an ESD level shift event occurs to the first system reference voltage signal on the first power wire. If so, a control signal corresponding to the first level is provided. The output stage controller controls the output stage circuit of the display driver to be in a high impedance state in response to the control signal corresponding to the first level to avoid the output stage circuit outputting an output image data that has been affected by an ESD event. | 11-08-2012 |
20120306828 | DRIVING CIRCUIT AND OPERATING METHOD THEREOF - The invention provides a driving circuit applied in a LCD apparatus and operating method thereof. The driving circuit includes at least one first channel, at least one second channel, a timing controller, and a panel driver. The timing controller includes a digital signal switching unit. The digital signal switching unit selectively performs a polarity exchange to a first digital data signal and a second digital data signal according to a control signal. The panel driver includes an analog signal switching unit. The analog signal switching unit performs a switching corresponding to the polarity exchange according to the control signal to make the driving circuit selectively operated under a first operation mode or a second operation mode. | 12-06-2012 |
20140002290 | ANALOG TO DIGITAL CONVERTER | 01-02-2014 |
20140197868 | DRIVING CIRCUIT HAVING BUILT-IN-SELF-TEST FUNCTION - A driving circuit includes at least one reference voltage source, at least one offset unit, and at least one buffer module. The at least one reference voltage source generates a reference voltage. The at least one offset unit generates an offset voltage, wherein the offset voltage and the reference voltage form a judging voltage range. The at least one buffer module has a first input end, a second input end, and an output end, wherein the first input end receives an analog voltage; the at least one reference voltage source is connected with the second input end; the at least one buffer module, according as whether the analog voltage is within the judging voltage range, outputs a pass logic signal or a fail logic signal at the output end. Particularly, the buffer module has Built-In-Self-Test (BIST) function and can increase test efficiency and voltage accuracy. | 07-17-2014 |