摘要:
Each of a plurality of multi-display interfaces respectively associated with a liquid crystal panel is provided with setting circuits for setting a horizontal write start position, a horizontal write width, a vertical write start position, a vertical write width and an enlargement rate, a circuit for storing display data, and an ID setting circuit for setting an ID number for the liquid crystal panel. The multi-display interfaces read display data on the same or different regions to display images in various modes.
摘要:
A liquid crystal halftone display system including a tone generator which, for pixels having P tones of K tones (1≦P≦K), alternately outputs first N-bit tone display data and second N-bit tone display data in successive frames at one of a first phase and a second phase. Within a block of pixels, the tone generator alternately inverts the phase of the N-bit tone display data at successive first pixels having different ones of the P tones within the block of pixels beginning at a left side of the block of pixels, and alternately inverts the phase of the N-bit tone display data at successive pixels having a same one of the P tones within the block of pixels beginning at the left side of the block of pixels.
摘要翻译:一种液晶半色调显示系统,包括一个乐音发生器,对于具有K音调(1 <= P <= K)的P音调的像素,在连续的帧中交替地输出第一N位乐音显示数据和第二N比特音调显示数据 在第一阶段和第二阶段中的一个阶段。 在一个像素块内,色调发生器在像素块的左侧开始的像素块内的P个音调中具有不同的P个音调的连续的第一像素交替地颠倒N位色调显示数据的相位, 在像素块左侧开始的像素块内具有相同的P个音调的连续像素的N位色调显示数据的相位反转。
摘要:
A liquid-crystal display system includes a data driver, a scan driver, a liquid-crystal panel, a line memory (204 in FIG. 2) in which input display data (101) for representing any of display-ON, display-OFF and halftone every pixel are stored for, at least, one line, and a halftone pattern generator (200) by which liquid-crystal display data (106) to be applied to the data driver are generated using the contents of the line memory and the input display data. The halftone pattern generator generates ON data in response to the input display data representing the display-ON of the pixel; it generates OFF data in response to the input display data representing the display-OFF of the pixel; and it generates the ON data and the OFF data alternately in successive frames as halftone data in response to the input display data representing the halftone display of the pixel, and it also compares the input display data of a pertinent line and those of a preceding line every line so as to invert a phase of changing-over the ON data and the OFF data in accordance with a result of the comparison. Since the number of ON pixels (or pixels for either of first and second data) for the halftone display is substantially equalized every frame, flickering can be reduced irrespective of display patterns.
摘要:
A video signal output device which outputs a video signal, including a basic signal group generating circuit for generating a sync signal and a video signal, the video signal indicating display values of pixels at display positions on a display device in intervals of the video signal, the display positions being determined in accordance with time differences between the intervals of the video signal and the sync signal; a signal generating circuit for generating a transmission signal relating to the video signal to be transmitted to the display device; a superposing circuit for superposing the transmission signal on the sync signal to generate a second sync signal; and an output circuit for outputting the second sync signal and the video signal.
摘要:
An object of the present invention is to perform precise A-D conversion of analog video signal in a liquid crystal display monitor, without increasing a transmission line: to attain this object, a horizontal dividing signal synthesizing circuit of a graphics card superposes a horizontal dividing signal synchronized in phase with a clock for D-A conversion of the analog video signal on a horizontal sync signal, to obtain a second horizontal sync signal, to be outputted; a sync signal isolating circuit of the liquid crystal display monitor isolates the horizontal dividing signal and horizontal sync signal from the second horizontal sync signal; the PLL generates an A-D conversion clock synchronized with the horizontal dividing signal.
摘要:
In order to enable one monitor device to be used as the monitor device for a plurality of computers, a display controller displays a frame represented by display data entered from a second computer on a liquid crystal display in a window within a frame represented by display data entered from a first computer, and the position and size of the window are altered by the display controller on the basis of communication data for display control extracted by a communication controller and entered from the first computer or the second computer.
摘要:
A display unit which can detect the X coordinate of a position with which a pen is in contact more efficiently. In a non-display period, X-electrodes are grouped into N regions according to the X-electrode arrangement, each region is divided into two parts according to the X-electrode arrangement, and selection voltage is applied to the X-electrodes belonging to each part having larger X coordinates. The process is repeated in order while N is doubled from one to the half value of the number of the X-electrodes of a liquid crystal panel. If a pen coming in contact with the liquid crystal panel and detecting X-electrode selection voltage detects selection voltage with respect to each N value, the Nth most significant bit of the X coordinate of the position with which the pen is in contact is set to `1.` If the pen does not detect selection voltage, the bit is set to `0.` Thus, the X-electrode of the position with which the pen is in contact can be detected at the number of selection voltage application times equal to the minimum number of bits that can represent each of the X-electrodes.
摘要:
A liquid crystal display control device is provided with a clock generating circuit for generating, on the basis of a first synchronous signal, a dot clock having a predetermined period, a phase which varies on dot-period basis for every frame period of the first video signal, an input circuit for picking up the first video signal in accordance with the dot clock and outputting digital display data, a frame memory in which the digital display data are stored, and a control circuit for generating a second synchronous signal for a liquid crystal display and reading out the display data stored in the frame memory to generate a second video signal, whereby a series of operations from a pickup operation of the video signal to a display operation of the liquid crystal panel can be performed at a lower speed while suppressing deterioration in quality of display images.
摘要:
A liquid crystal display control device is provided with a clock generating circuit for generating, on the basis of a first synchronous signal, a 1/n-frequency dot clock whose period is equal to n-times the dot period of a first video signal (n≧2) and whose phase varies on dot-period basis for every frame period of the first video signal, an input circuit for picking up the first video signal in accordance with the 1/n-frequency dot clock and outputting digital display data, a frame memory in which the digital display data are stored, and a control circuit for generating a second synchronous signal for a liquid crystal display and reading out the display data stored in the frame memory to generate a second video signal, whereby a series of operations from a pickup operation of the video signal to a display operation of the liquid crystal panel can be performed at a lower speed while suppressing deterioration in quality of display images.
摘要:
A display device with a touch pad function is provided which reduces the elements required to form a photo sensor while still accurately detecting input coordinate positions. The display device includes a display part on which a plurality of pixels are arranged in a matrix array, a plurality of photo detection circuits which are arranged in a matrix array in the inside of the display part, wherein each photo detection circuit of the plurality of photo detection circuits includes: a photo sensor which converts an incident light into a optical current corresponding to intensity of the incident light, an integral capacitance which integrates the optical current converted by the photo sensor, and a comparator to which a voltage of the integral capacitance is inputted, and the comparator includes a transistor of an open drain output type with a grounded source.