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6211850 |
Timing generator for driving LCDs
The present invention provides a display apparatus comprising: a decoder/driver for receiving a video signal, extracting a synchronization signal from the video signal and generating an image...
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6201523 |
Flat panel display device
A positive polarity D/A converter 11 and a negative polarity D/A converter 12 are formed of an IC chip having the same structure and the same breakdown voltage respectively. When a horizontal clock...
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6195076 |
Electron-beam generating apparatus, image display apparatus having the same, and method of driving thereof
A driving circuit and a driving method capable of uniformly outputting an electron beam at high speed from a multi-electron-beam source (50) having a plurality of cold cathode devices wired in a...
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6195071 |
Timing control circuit of AC type plasma display panel system
Disclosed is a timing circuit which produces control signals by which a data interfacing section can simultaneously implement input and output operations of a video data from a frame memory to an...
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6195086 |
Method and apparatus for loosely synchronizing closed free running raster displays
The present invention is a means and method for synchronizing closed free-running systems, such as graphics systems, with no external synchronization signals required. Video games and most computer...
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6195087 |
Method and device for preventing the jumping phenomenon of an OSD display region on a monitor screen
A method and device for preventing the jumping phenomenon of the OSD display region on a monitor screen. The anti-jumping device comprises it included a comparison circuit, a signal generator and a...
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6194971 |
Method and apparatus for phase shifting a controlled oscillator and applications thereof
A method and apparatus for providing very small changes in the output oscillation of a controlled oscillation circuit, which may be used in a phase locked loop circuit, is accomplished by a...
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6181300 |
Display format conversion circuit with resynchronization of multiple display screens
A display data format conversion circuit and method facilitates display of data on a plurality of display devices based on display data of a source display device. The system incorporates a...
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6177922 |
Multi-scan video timing generator for format conversion
This invention is directed to a method and apparatus for producing video signal timing for a display device that has a display format different from the input video format. It also provides a...
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6175361 |
Frequency generation during switch-over for multi-frequency video monitor
The present invention discloses a method and apparatus for generating a synchronizing signal during a frequency switch-over of an input signal from a first frequency to a second frequency in a...
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6172686 |
Graphic processor and method for displaying a plurality of figures in motion with three dimensional overlay
A graphic processor comprises a timing generator to output the signal for operation timing control according to the clock signal, the vertical sync signal and the horizontal sync signal, a drawing...
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6169539 |
Analog video signal selection circuit
An analog video signal selection circuit which selects one of video signals and synchronous signals from two different channels, including: a mode selection means for generating a first channel...
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6163315 |
Process for detecting and adjusting the synchronization of video signal for displaying
A process in displaying a video signal according to a sequence of synchronous pulses is disclosed. The process is based on the adjustment of timing of the active part of a video signal to be...
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6160543 |
Transmission device for computer video signals
A transmission device for computer video signals. Computer video signals can be inputted into the transmission device for processing and to be transmitted by only three pairs of transmission line...
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6160542 |
Tracking control circuit of a display
A display includes: a clock signal generator for generating a first sampling clock signal used for converting an analog video signal supplied from a host to a digital video signal; a tracking...
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6157228 |
Data line driving circuit formed by a TFT based on polycrystalline silicon
A data line driving circuit comprises a shift register for sequentially generating sampling pulses according to a clock pulse, a buffer connected to each stage of the shift register, and a sampling...
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6157376 |
Method and apparatus for generating a target clock signal having a frequency of X/Y times the frequency of a reference clock signal
A clock generator circuit which provides for short comparison cycles even if X and Y do not have a large common denominator when a target clock signal having a frequency of (X/Y) times the...
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6154225 |
Virtual refresh™ architecture for a video-graphics controller
A single-chip video-graphics controller displays a color image stored in an external display memory simultaneously on two devices having different refresh and display requirements. The controller...
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6154202 |
Image output apparatus and image decoder
An image output apparatus capable of realizing asynchronous data access by a host controller in response to an image data transfer request from the host controller, by adding a minimum amount of...
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6144355 |
Display device including a phase adjuster
A display device disclosed includes a liquid crystal display panel, a signal-line driver circuit responsive to image data Data and a first clock signal CK1 for generating signals supplied to signal...
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6141023 |
Efficient display flip
An apparatus for an efficient display flip is disclosed. The apparatus has a computer readable medium having a graphics driver. The execution of the graphics driver is configured to generate...
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6137536 |
Synchronizing signal generator
The present invention relates to processing of a video signal in a computer display and the like, and aims at providing a synchronizing signal generator which can obtain a vertical synchronizing...
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6137455 |
Computer keyboard, mouse and VGA monitor signal transmission arrangement
A computer keyboard, mouse and VGA monitor signal transmission arrangement includes an encoder connected to a personal computer, a decoder connected to computer peripheral apparatus including a VGA...
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6130660 |
System and method for synthesizing high resolution video
Systems and methods for transforming low resolution data into higher resolution video signals are disclosed. Exemplary embodiments of the present invention allow fixed frequency monitors to be...
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6122000 |
Synchronization of left/right channel display and vertical refresh in multi-display stereoscopic computer graphics systems
Method and apparatus for synchronizing vertical refresh and the display of left versus right channels in a stereoscopic, multi-display computer graphics system. Each graphics pipeline in the system...
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6118440 |
Image display system and display control apparatus
An image display system reproduces a dot clock on the basis of a horizontal sync signal that is generated from a host computer and displays an image on a display unit such as a ferroelectric liquid...
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6115009 |
Video signal counter system for automatic positioning and centering circuit
A display device using a video signal counter system in its automatic positioning and centering circuit. The display device receives a video signal (e.g., from a host computer) including red,...
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6104362 |
Panel display in which the number of sustaining discharge pulses is adjusted according to the quantity of display data, and a driving method for the panel display
A panel display has a display panel including a plurality of cells to be selectively discharged to an address driver for setting the plurality of cells to states represented by display data. The...
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6100906 |
Method and apparatus for improved double buffering
A method and apparatus for improved double buffering within a computing system begins when a series of data blocks are received from a central processing unit at a rate independent of a processing...
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6097379 |
Liquid crystal display device
A liquid crystal display device is realized which facilitates the automatic display adjustment of moving images, and which effectively detects noise or the like interfering with the video signal....
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6097378 |
Video display apparatus with audio circuitry and a method for controlling power therein
In one arrangement of a video display apparatus according to the present invention, an audio power supply, which separated from a constant voltage generator, is directly connected to a main power...
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6078361 |
Video adapter circuit for conversion of an analog video signal to a digital display image
A video adapter circuit for adapting analog video signals provided by a personal computer system designed to drive a CRT display monitor into signals appropriate for driving a flat panel display...
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6075510 |
Low power refreshing (smart display multiplexing)
A reduced-power method of updating an LCD display. LCD displays are refreshed line by line. Lines of the display which do not need to be updated, i.e. which are blank, are refreshed with less power...
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6067071 |
Method and apparatus for expanding graphics images for LCD panels
A display controller in a computer system controls the output of graphics display data in a computer system having a fixed resolution flat panel display. Fixed panel displays may have problems...
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6067083 |
Method and apparatus for processing video data utilizing a palette digital to analog converter
A method and apparatus for processing video graphics utilizing less power is accomplished by providing a clock circuit that generates a clock signal. The clock signal is fed to a synchronization...
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6064443 |
Method for detecting and separating vertical and horizontal synchronous signals from computer system
A method for detecting and separating vertical and horizontal synchronous signals from a computer system. The input forms of the vertical and horizontal synchronous signals from the computer system...
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6046725 |
Multicolor display control method for liquid crystal display
A dither circuit for reproducing multicolor data includes a latch for receiving 8 input data bits and a clock signal, and for separating the 8 input data bits into high 7 bits and a low bit; a...
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6046734 |
Image processor
A picture processor for a video conference device, etc., can be used easily by carrying it into a room other than the video conference room, has an object of enabling the display of the input...
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6046737 |
Display device with a display mode identification function and a display mode identification method
The present invention relates to a display device and a method for identifying a display mode for a display device which receives a synchronous signal and a video signal. The display device...
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6046738 |
Method and apparatus for scanning a digital display screen of a computer screen at a horizontal scanning frequency lower than the origin frequency of a display signal
A digital display unit receiving a display signal with image encoded at high origin frequencies (e.g., dot clock). A display signal interface samples the display signal during source display time...
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6046735 |
EMI reduction for a flat-panel display controller using horizontal-line-based spread spectrum
A graphics controller uses spread-spectrum techniques to modulate the pixel clock over a range of frequencies, reducing the maximum intensity of EMI emissions. When the clock input to the graphics...
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6043803 |
Adjustment of frequency of dot clock signal in liquid
In a liquid crystal display apparatus connected to a computer, a screen size detecting section detects screen size data indicating a size for one screen from a horizontal sync signal, a vertical...
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6040816 |
Active matrix display device with phase-adjusted sampling pulses
An active matrix display device including a pixel unit which includes row-type gate lines, column-type signal lines and pixels arranged at respective intersecting portions of the gate lines and the...
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6037953 |
Graphic display method and device for high-speed display of a plurality of graphics
A graphics display device includes a drawing processing unit to output a display pixel data signal, a write enable signal and an address signal sequentially with respect to target graphics,...
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6037978 |
Sync signal self-test device and method
A sync signal self-test device includes: a pre-amplifier, for pre-amplifying red, green, and blue video signals from a computer system; a microprocessor, for checking the horizontal and vertical...
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6037926 |
Emulation of computer monitor in a wide screen television
Method and apparatus for using a wide screen television receiver operating at 2f H as a VGA or SVGA monitor. The VGA or SVGA board in a computer is programmed to generate an RGB video signal...
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6037994 |
Sync signal processing device for combined video appliance
A sync signal processing device for a combined video appliance capable of directly processing a personal computer (PC) signal through a television (TV) receiver circuit to achieve the horizontal...
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6028586 |
Method and apparatus for detecting image update rate differences
A method and apparatus for detecting differences between an image update rate and a display update rate and to provide a viable solution that produces minimal adverse visual effects is achieved by...
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6023258 |
Flat display
The present invention provides a flat display including a high-speed arithmetic logic facility so that, even when a data signal for a first line follows immediately after a frame start signal, the...
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6020874 |
Flat panel display device
A flat panel display device includes a display panel including a plurality of pixels arranged in matrix of rows and columns, a data latch circuit for latching various types of color data to be...
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