Patent application number | Description | Published |
20120169368 | TEST CIRCUIT OF SOURCE DRIVER - A test circuit of a source driver is disclosed. The test circuit includes a voltage selector and at least one digital-to-analog converter (DAC). The voltage selector has a plurality of first output terminals. The voltage selector outputs a first voltage at one of the first output terminals in a sequential order according to a selection signal and outputs a second voltage at the other first output terminals. Each of the at least one DACs has a plurality of the input terminals respectively coupled to the first output terminals and also has a second output terminal. The DAC transmits the first voltage received by one of the input terminals to the second output terminal in a sequential order according to the selection signal. | 07-05-2012 |
20120274493 | Digital-to-Analog Converter circuit with Rapid Built-in Self-test and Test Method - A digital-to-analog converter circuit with rapid built-in self-test is disclosed. The digital-to-analog converter includes a control unit for generating a selection control signal and a digital data control signal, a voltage switching module including a voltage switching module for receiving a first test voltage, a second testing end for receiving a second test voltage, and a plurality of switches, which is utilized for respectively arranging each switch to connect to the first testing end or the second testing end to output the corresponding switching selection signal, and a digital-to-analog converter for selecting an output testing voltage signal from the plurality of switching selection signals according to the digital data control signal. | 11-01-2012 |
20130266030 | Device and Method for Transmitting and Receiving Data - A data transmission device includes a data division unit for receiving an original transmission data and dividing the original transmission data into a plurality of division data; a data generation unit for generating a plurality of packet data according to the plurality of division data and a plurality of clock data, wherein each of the clock data is a multi-bit data; and a data output unit for outputting the plurality of packet data to a data reception device; where each of the packet data includes a division data and a clock data, each of the packet data corresponds to a packet data period, and the division data corresponds to a division data period of the packet data period and the clock data corresponds to a clock period of the packet data period. | 10-10-2013 |
20140049524 | METHOD FOR DISPLAYING ERROR RATES OF DATA CHANNELS OF DISPLAY - A method for displaying error rates of data channels of a display is provided. A timing controller of the display repeatedly transmits a test signal with a specific format to a first and a second source drivers of the display via a first and a second data channels of the display. During testing, a first number and a second number of times of the first source driver and the second source driver determining that the received test signal does not have the specific format are counted respectively. The first and the second source drivers control displaying of a first area and a second area of a panel of the display respectively according to the counted first and second numbers of times. Accordingly, the error rates of the data channels are presented on the panel of the display in a way that the error rates could be recognized more easily. | 02-20-2014 |
20140071106 | SOURCE DRIVER AND METHOD FOR UPDATING A GAMMA CURVE - A source driver includes a first drive channel circuit, a voltage controller and a first programmable voltage buffer unit. The first drive channel circuit receives a first pixel data from the timing controller via a data bus, converts the first pixel data to a first drive voltage according to a first reference voltage group, and drives a display panel by the first drive voltage. The voltage controller receives a voltage command from the timing controller, generates and changes a first reference voltage configuration data according to the voltage command. The first programmable voltage buffer unit is coupled to the voltage controller and the first drive channel circuit, and receives the first reference voltage configuration data to generate and adjust the first reference voltage group for applying to the first drive channel circuit. Furthermore, a method for updating a new gamma curve by the source driver is also provided. | 03-13-2014 |
20140078133 | PANEL DISPLAY APPARATUS - A panel display apparatus is provided which includes a timing controller, a plurality of source drivers, a first data path, and a second data path. The first data path and the second data path are both coupled between the timing controller and the source drivers. The timing controller transmits multiple display data to the source drivers via the first data path. When the source drivers detect an event (e.g. error event), the source drivers transmit at least one event data (e.g. notification data) to the timing controller via the second data path to notify the timing controller that event correction (e.g. error correction) is needed. | 03-20-2014 |
20140111494 | Self-detection Charge Sharing Module - A self-detection charge sharing module for a liquid crystal display device is disclosed. The self-detection charge sharing module includes at least one detecting unit, for detecting a plurality of input voltages of a plurality of operational amplifiers driving a plurality of data line sand a plurality of output voltage of the plurality of data line, to generate at least one detecting result, and at least one charge sharing unit, for conducting connection between at least one first data line and at least one second data line among the plurality of data line when the at least one detecting result indicates at least one corresponding first input voltage and at least one corresponding second input voltage among the plurality of input voltage have opposite voltage variation direction and vary toward each other. The at least one first input voltage and the at least one second input voltage maintain respective polarities. | 04-24-2014 |
20140132575 | TIMING CONTROLLER, SOURCE DRIVER, DISPLAY DRIVING CIRCUIT, AND DISPLAY DRIVING METHOD - A timing controller is provided. The timing controller includes a timing control circuit, a first scrambler and a second scrambler. The timing control circuit provides first source driving data and second source driving data. The first scrambler scrambles the first source driving data according to a first random number to generate first scrambled data. The second scrambler scrambles the second driving source data according to a second random number to generate second scrambled data. The second random number is different from the first random number. | 05-15-2014 |
20140132587 | Integrated Source Driver and Liquid Crystal Display Device Using the Same - The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively. | 05-15-2014 |
20140160104 | DISPLAY DRIVING METHOD AND ASSOCIATED DRIVING CIRCUIT FOR DISPLAY APPARATUS - A display driving method and an associated driving circuit are provided, where the display driving method includes: checking relationships between two voltage levels respectively represented by two continuously received digital codes received by a specific digital code input terminal and a first predetermined threshold, and preferably further checking a relationship between at least one voltage level represented by at least one digital code of the two continuously received digital codes and a first predetermined zone, in order to determine whether to pre-charge a specific set of display cells within a plurality of sets of display cells, the specific set corresponding to the specific digital code input terminal; when it is determined to pre-charge the specific set of display cells, temporarily conducting a pre-charging voltage generator to the specific set of display cells to pre-charge the specific set of display cells. | 06-12-2014 |
20140160183 | TIMING SCRAMBLING METHOD AND TIMING CONTROL CIRCUIT THEREOF - A timing scrambling method, for a timing control device corresponding to a plurality of source driving devices, includes adjusting a selecting signal according to a clock signal; selecting one of a plurality of scrambling generating units according to the selecting signal to generate a timing scrambling signal; and generating scrambling data for the plurality of source driving devices according to the timing scrambling signal. | 06-12-2014 |
20140198021 | DISPLAY DRIVING APPARATUS - A display driving apparatus, including an image processor, a timing controller, and a plurality of source drivers, is provided. The image processor determines whether an image frame corresponding to a frame data is a static image and outputs the frame data and a determination result. The timing controller receives the frame data from the image processor and outputs the frame data. The source drivers receive the frame data from the timing controller and drive a display panel according to the frame data. Each of the source drivers includes a memory module configured to store the frame data corresponding to the static image. When the source drivers drive the display panel according to the frame data corresponding to the static image, the image processor stops outputting the frame data to the timing controller, and the timing controller stops outputting the frame data to the source drivers. | 07-17-2014 |
20140241459 | CLOCK-EMBEDDED DATA GENERATING APPARATUS AND TRANSMISSION METHOD THEREOF - A clock-embedded data generating apparatus and transmission method are disclosed. The steps of the transmission method include: generating a plurality of preamble signals according to a number sequence, where each of the preamble signals has a plurality of bits. The number sequence includes a plurality of values, and the bits of each of the preamble signals are decided by each of the corresponding values; transmitting the preamble signals during a plurality of preamble signal transmitting periods respectively, and transmitting a plurality of data signal during a plurality of data signal transmitting periods respectively. | 08-28-2014 |
20140320474 | DISPLAY DRIVER AND DISPLAY DIVING METHOD - A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level. | 10-30-2014 |
20140368553 | SOURCE DRIVER APPARATUS AND DRIVING METHOD OF DISPLAY PANEL - A source driver apparatus configured to drive a display panel is provided. The source driver apparatus includes a data operation circuit and a pixel driving circuit. The data operation circuit is configured to receive pixel data and perform a polarity determination operation on the pixel data to determine a polarity distribution information of pixels on the display panel. The pixel driving circuit is coupled to the data operation circuit. The pixel driving circuit is configured to drive the display panel according to the pixel data and the polarity distribution information. Furthermore, a driving method of the display panel is also provided. | 12-18-2014 |
20150042395 | SOURCE DRIVER AND METHOD TO REDUCE PEAK CURRENT THEREIN - A source driver and a method to reduce peak current of the source driver are provided. The source driver includes a latch circuit, a level shifter and a digital-to-analog converter (DAC) circuit. The latch circuit latches current bit-data. The latch circuit is coupled to an input terminal of the level shifter. The DAC circuit is coupled to an output terminal of the level shifter. When the current bit-data is not a complement of previous bit-data, the latch circuit selects and outputs the current bit-data to the input terminal of the level shifter, and the DAC circuit outputs a voltage corresponding to the output data of the level shifter. When the current bit-data is the complement of the previous bit-data, the latch circuit selects and outputs the previous bit-data to the input terminal of the level shifter, and the DAC circuit outputs a voltage corresponding to the current bit-data. | 02-12-2015 |
20150084947 | SOURCE DRIVER AND METHOD FOR DRIVING DISPLAY DEVICE - A source driver includes a first drive channel circuit, a voltage controller and a first programmable voltage buffer unit. The first drive channel circuit receives a first pixel data and a first reference voltage group, for driving the display device. The voltage controller receives a voltage command during a line data transmitting period, a horizontal blanking period or a vertical blanking period for generating a first reference voltage configuration data. The first programmable voltage buffer unit is coupled to the voltage controller and the first drive channel circuit, and receives the first reference voltage configuration data for applying the first reference voltage group to the first drive channel circuit. Furthermore, a method for driving a display device is also provided. | 03-26-2015 |