摘要:
An LCD for improving dynamic contrast by adjusting gamma voltages according to the brightness of an image is provided. The LCD includes: a liquid crystal display panel assembly having a plurality of pixels provided on crossing areas of a plurality of gate lines and a plurality of data lines; a gate driver applying voltage signals for sequentially scanning the gate lines; a source driver applying voltage signals for image display to the data lines; a timing controller providing image data and a control signal for the source driver, providing a gate line on/off control signal for the gate driver, and outputting digital gamma data to a digital/analogue (D/A) converter; and the D/A converter connected to the timing controller for converting the digital gamma data from the timing controller into analog signals to generate a plurality of gamma voltages and outputting the gamma voltages to the source driver. The LCD generates the gamma voltages by the D/A converter in place of using serially-connected resistors, and thus, the gamma voltages may vary depending on the brightness of the image.
摘要:
A low voltage differential signal (LVDS) receiver includes a first receiving unit configured to receive a reference voltage and to responsively generate a first differential signal, and a second receiving unit configured to receive a voltage developed across a variable termination resistor unit having a resistance that is adjustable based on a resistance control code in response to a reference current, and to responsively generate a second differential signal. The LVDS receiver further includes a comparing unit configured to compare the first differential signal with the second differential signal and to responsively generate a counter control signal. The LVDS receiver further includes an up/down counter configured to adjust the resistance control code in response to the counter control signal. The up/down counter is further configured to provide the resistance control code to the variable termination resistor unit. Corresponding methods are also disclosed.
摘要:
An LCD module includes a user connector part that receives power voltages, image signals and control signals from an external host system and outputs the power voltages, image and control signals through a first integrated type connector and an LCD module having a second integrated type connector connected with the first integrated type connector through an FPC. The LCD module receives power voltages and image and control signals through the second integrated type connector, provides image data signals and timing signals to data lines and provides scan signals to gate lines. Namely, the LCD can receive power voltage, the image signals and control signals through the integrated type connector instead of a plurality of connecting terminals, thereby providing an LCD having slim weight and compact size and reducing the size thereof.
摘要:
A variable-length decoder includes a bitstream interface unit and a decoding unit, The bitstream interface unit generates a decoding bitstream for a current decoding process based on an unused decoding bitstream and an input bitstream. The unused bitstream includes unused bits of a previous decoding bitstream. The decoding unit decodes the decoding bitstream to generate a plurality of symbols per clock cycle and provides a next unused bitstream for a next decoding process to the bitstream interface unit.
摘要:
A display driver includes a first interface controller, a signal selector, a driver logic unit and a second interface controller. The first interface controller processes a control command transferred through a first interface mode to provide a path control command and a panel control command. The signal selector receives the path control command from the first interface controller, and separates a first video signal and a second video signal from a video signal conforming to a video interface mode. The driver logic unit receives the first video signal from the signal selector and the panel control command from the first interface controller to drive a display panel. The second interface controller outputs the second video signal device through a second interface mode to an external.
摘要:
A liquid crystal display device includes an liquid crystal display panel and a panel driving unit that generates a driving signal to drive the liquid crystal display panel according to a video signal provided by a scaler. The liquid crystal display device further includes a user input unit that adjusts a brightness of a screen displayed on the liquid crystal display panel, and a microcomputer that controls the panel driving unit such that a voltage of the panel driving signal outputted from the panel driving unit can be maintained within a predetermined voltage range, such that a voltage of a panel driving signal inputted to a liquid crystal display panel is maintained at a constant level regardless of the adjustment of brightness, thereby enabling to preventing occurrence of flickering phenomenon.
摘要:
A liquid crystal display includes a liquid crystal display panel for displaying picture images, and a color correction unit. Upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel. The color correction unit stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves, thereby displaying the picture images.
摘要:
A timing controller that includes a noise detection circuit and a setting control unit. The noise detection circuit includes a detection unit and a reset signal generating unit. The detection unit outputs a detection signal having a first logic level based on at least one of a plurality of reference data toggling asynchronous with a clock signal. The reset signal generating unit outputs a reset signal having a second logic level based on the detection signal. The setting control unit stores setting data and initializes the setting data in response to the reset signal having the first logic level, and the setting data are used to process red, green and blue (RGB) image data.
摘要:
A device for data compression includes a domain transformer unit, a classifying unit, a variable length encoder, a fixed length encoder and a memory unit. The domain transformer unit transforms time-domain data into frequency-domain data. The classifying unit determines an encoding type of the frequency-domain data based on occurrence probability of the frequency-domain data. The variable length encoder encodes first frequency-domain data that are determined to be encoded by variable length coding. The fixed length encoder encodes second frequency-domain data that are determined to be encoded by fixed length coding. The memory unit stores the encoded first and second frequency-domain data by relocating the encoded first and second frequency-domain data such that the encoded first frequency-domain data are placed adjacently and the encoded second frequency-domain data are placed adjacently. Therefore, the time for decoding the corresponding data may be reduced.
摘要:
A parity error detecting circuit includes a first operation unit, a second operation unit, and a shift register. The first operation unit receives a serial data signal and a first signal, performs a logic operation on the two received signals, and outputs the result of the logic operation as the first signal in response to a first clock signal. The shift register shifts the first signal in response to the first clock signal and outputs a second signal. The second operation unit receives the first signal and the second signal, performs a logic operation on the two received signals, and outputs the result of the logic operation in response to a second clock signal.