Abstract: In a baseband video transmission system (BTS1) for transmission of a video signal (SV) at a baseband based on the DVI standard, a transmitting device (100) multiplexes a data signal (SD) representing data other than video during at least one blanking period of component video signals (SB, SG, SR) of the video signal (SV) to generate a DVI signal (Sdvi). A receiving device (104) receives the DVI signal (Sdvi), and extracts the data signal (SD) from the received DVI signal (Sdvi).

Abstract: A liquid crystal display apparatus using a backlight (104) for display includes: a video signal time compression circuit (101) for compressing a video signal in the time axis direction and outputting the time-compressed video signal; an LCD controller (106) for driving a liquid crystal panel (105) based on the time-compressed video signal; a source driver (107) and a gate driver (108); a motion detection circuit (2) for detecting the amount of motion of a display image based on the video signal; a PWM modulation pulse generation circuit (4) for generating modulation pulses different in frequency according to the detection result from the motion detection circuit (2); and an inverter (103) for lighting up the backlight (104) based on the modulation pulses, to thereby enable reduction of image contour blurring in a moving image and reduction of flicker in a still image.

Abstract: A signal converting section 401 increases a transfer rate of an input image signal to be supplied to a liquid crystal panel 405 and, at the same time, also inserts a non-image signal for applying a predetermined voltage to liquid-crystal cells in space of the input image signal and supplies it as a picture-element signal to a source driver 403. To each picture cell, an input image signal and a non-image signal are sequentially written with positive or negative polarity. For all picture elements, after the input image signal is written, the non-image signal equal in polarity to the input image signal is always written. Furthermore, after the non-image signal is written, an image signal opposite in polarity to the non-image signal is always written. Thus, when an image is displayed on the liquid crystal panel in OCB mode, it is possible to prevent the occurrence of back transition and carry out image display evenly.

Abstract: A liquid crystal display device capable of suppressing the occurrence of a back transition in OCB cells and displaying excellent images as well as a driving method thereof are provided. One frame period has a first period P1 for writing a signal for initializing the state of a liquid crystal in pixel cells and a second period for writing pixel data in correspondence with an image signal in pixel cells, and a voltage level to be applied to each pixel cell is set in the first period such that each pixel cell retains a voltage Vsup higher than that in the second period.

Abstract: At the time when displaying moving images using liquid crystal panels and others, there is such a problem that tail streaks occur, and resultantly image degradation is caused. In order to solve this problem, an echo suppression circuit 100 divides a video signal into a pair composed of two successive frames for comparison between these two frames in signal level for the purpose of suppressing an echo phenomenon occurring when a liquid crystal panel 108 displays video signals including moving images. If these two frames are not the same in signal level, the signal is accordingly so corrected as to equalize the signal level of those. Based on the video signals and others corrected by the echo suppression circuit 100, a controller 102 operates the liquid crystal panel with Alternating-Current drive through a source driver 104 and a gate driver 106. As such, the drive voltage used to operate the liquid crystal panel with AC drive is so adjusted as to be balanced between positive and negative.

Abstract: A video display monitor employs interpolation which maintains sharpness in images which have large differences in signal levels of picture elements and assuring smoothness of images such as lamps which have small differences in signal levels. The difference in the signal level differences of respective adjacent picture elements is detected by delay and subtraction. A decoder produces a signal for interpolation based on the input of an interpolation coefficient and the absolute value of the interpolation coefficient which is output from an absolute value detector.

Abstract: A pixel conversion apparatus includes a sync separator for separating a sync signal from an input signal, a pixel conversion information analyzer for analyzing how to convert the number of pixels to display the input signal as an image from the input signal and a picture display area, a timing signal generator for generating a timing signal for displaying an image according to the outputs of the sync separator and the pixel conversion information analyzer, a pixel converter for processing a pixel conversion of the input signal according to the output of the timing signal generator, an interpolator for processing a pixel interpolation when the pixel to be interpolated generated by pixel conversion at the pixel converter, and a sync signal generator for generating a sync signal for displaying the input signal as an image.