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6020901 |
Fast frame buffer system architecture for video display system
A fast frame buffer system and architecture supports preferably 24-bit capability and includes an integer rendering pipeline, especially useful for three-dimensional applications. The system...
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6014125 |
Image processing apparatus including horizontal and vertical scaling for a computer display
A scaling apparatus is disclosed for horizontally and vertically scaling scan line information stored in a video memory prior to providing the scan line information to a computer display....
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6011534 |
Driving circuit for image display device including signal generator which generates at least two types of sampling pulse timing signals having phases that differ from each other
A driving circuit for an image display device includes a signal generating circuit for generating an initiation control signal for controlling the initiation of sampling of a video signal to be...
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6011533 |
Image display device, image display method and display drive device, together with electronic equipment using the same
This invention relates to an image display device that samples stabilized pixel data within a sampling period, to display an image with no ghosting. A liquid crystal panel 100 consists of pixels...
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6011538 |
Method and apparatus for displaying images when an analog-to-digital converter in a digital display unit is unable to sample an analog display signal at a desired high sampling frequency
A digital display unit including an analog to digital converter (ADC). When the optimal sampling frequency for sampling an analog display signal is greater than the maximum sampling frequency of...
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6008791 |
Automatic adjusting apparatus of multiscan display
It is an object to enable an optimum video display to be obtained by automatically adjusting a display size and a display position of a video image even when any kind of video signal is supplied. A...
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6005357 |
Vertical oscillation circuit for display device
A vertical oscillation circuit includes a self raster discriminating circuit for selectively outputting a vertical sync signal and a vertical flyback signal; a vertical flyback pulse generator for...
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6005634 |
Method and apparatus for controlling the display of a video image
A control circuit (100) which receives horizontal synchronising pulses (265) and generates a horizontal drive output signal (455) for a cathode ray tube (CRT) display. The horizontal control...
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6005559 |
Display apparatus with a power conserving display
A display apparatus includes a power supply to be stopped in a low-power consumption mode, a unit for displaying an image based on image data input from a computer or television, and a unit for...
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6005557 |
Image display stabilization apparatus and method
A display panel image stabilization method and apparatus includes enabling a user to adjust both the pixel clock pulses and the synchronization for the display panel simultaneously by a single...
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5995089 |
Device for protecting a vertical deflection integrated circuit for a monitor
A vertical deflection IC protection device for a monitor employing a dedicated display data channel (DDC) chip which can prevent the vertical deflection IC from being damaged by intercepting an...
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5990857 |
Shift register having a plurality of circuit blocks and image display apparatus using the shift register
The shift register of this invention for sequentially transferring a digital signal in synchronization with a clock signal includes: a plurality of circuit blocks connected in series, each...
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5990861 |
Method of and apparatus for reprogramming a video controller
A method for reprogramming a video input device to multiplex video data from at least two different video sources is disclosed. A video input device contains control registers for controlling the...
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5986633 |
Video multiplexing system for superimposition of scalable video data streams upon a background video data stream
A video multiplexing system for superimposition of scalable video data streams upon a background data stream and having a video decoder to extract a first luminance signal, an A/D converter to...
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5977802 |
Circuit for processing vertical synchronization signals including a polarity detection circuit
The present invention relates to a circuit for processing vertical synchronization logic signals of positive or negative polarity. Based on signals locating, on the one hand, the presence of the...
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5977836 |
Method and apparatus for controlling an output frequency of a phase locked loop
A method and apparatus for controlling an output frequency of a phase locked loop is accomplished by determining a plurality of divider ratios which are based on an input frequency, parameters, and...
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5966119 |
Pseudo-synchronizing signal generator for use in digital image processing apparatus
A pseudo-synchronizing signal generator for use in a digital image processing apparatus is disclosed. The pseudo-synchronizing signal generation circuit comprising a pulse generating circuit for...
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5963193 |
Display apparatus with digital output palette
A display system comprises a digital video source coupled to a digital display device via an digital interface having a timing channel for carrying a pixel clock signal from the video source to the...
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5963200 |
Video frame synchronization of independent timing generators for frame buffers in a master-slave configuration
A method and apparatus for synchronizing the vertical blanking of multiple frame buffers which may exist on the same computer or separate computers for certain applications including stereo...
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5963183 |
Method of and apparatus for displaying a plurality of screen modes
A method of and an apparatus for displaying a plurality of screen modes. The apparatus includes a synchronizing signal generator for generating a synchronizing signal for one screen mode, a display...
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5956022 |
Interactive monitor trouble-shooting device
An interactive monitor trouble-shooting device includes a micro-processor based control unit which detects the horizontal synchronization signal and the vertical synchronization signal from the...
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5940136 |
Dot clock reproducing method and dot clock reproducing apparatus using the same
The invention presents a dot clock reproducing apparatus for automatically reproducing the dot clock easily, by setting the dot clock frequency of a video signal source, and correcting the phase...
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5936621 |
System and method for reducing flicker on a display
A system and method for reducing flicker in a display system using a flicker reduction circuit. The display includes a series of scan lines, each of which includes a set of pixels. The display is...
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5926172 |
Video data transmission and display system and associated methods for encoding/decoding synchronization information and video data
Video data transmission and display system configured for transmitting three video data signals and two synchronization signals over three lines while preserving polarity information for the...
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5926174 |
Display apparatus capable of image display for video signals of plural kinds
In an apparatus for displaying the image of an input video signal, utilizing a clock signal which is phase synchronized with the input video signal, change in the state of the input video signal is...
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5923342 |
Video display controller
A laptop computer 53 has an LCD display 542 which is used to display images represented by data-reduced video signals supplied to it from a buffer 52 of a video signal processor (50, 51, 52, 56,...
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5917479 |
Method for reducing power consumption in a monitor
The invention relates to a method and arrangement for managing the power control of a monitor. In the solution according to the invention the monitor synchronizing signals are not monitored...
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5917461 |
Video adapter and digital image display apparatus
A video adapter converts an analog image signal output from a personal computer to a digital signal. The clock frequency, phase data, and display position data for the A/D conversion are set...
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5912713 |
Display control apparatus using display synchronizing signal
A horizontal synchronizing signal is applied as a reference signal and a voltage-controlled oscillator outputs a display clock signal on the basis of the frequency of the horizontal synchronizing...
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5909206 |
Display control device
CPU writes display character codes corresponding to a liquid crystal display position to display RAM to cause any desired character to be read from character generator ROM and to be displayed....
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5896120 |
Preventing noise in a coordinate input device by reducing or suspending backlight oscillation voltage
A d.c. voltage is supplied to an inverter power source to drive a light source. Light from the light source is directed uniformly from the back side of a liquid crystal panel. When an image is...
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5889500 |
Single chip display system processor for CRT based display systems
A single chip display system processor in a CRT (Cathode Ray Tube) based display is disclosed, including a display system controller, a horizontal processor, a vertical processor, and optionally,...
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5880719 |
Low-power-consumption monitor standby system
A system for managing power states for a video display monitor for a computer during periods of operator inactivity senses the presence or absence of signals provided to the video display monitor...
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5874949 |
Horizontal synchronizing signal frequency measuring instrument for multi-synchronism type display unit
The invention provides a horizontal synchronizing signal frequency measuring instrument which can measure a horizontal synchronizing signal frequency with a higher degree of accuracy. The...
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5861879 |
Video signal processing device for writing and reading a video signal with respect to a memory according to different clocks, while preventing a write/read address pass-by in the memory
An input video signal is written into alternate field memories M1 and M2, according to a timing clock from an input video clock generator. A display video signal is alternately read from those...
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5859635 |
Polarity synchronization method and apparatus for video signals in a computer system
A method and apparatus for automatically synchronizing the polarity of video signals generated by a graphics controller card to a display monitor is described. The present invention includes...
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5859634 |
Vertical position-jitter elimination
A first information (I) is displayed on a display screen of a display device (5). A vertical and horizontal position of a field of the first information (I) on the display screen is determined by a...
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5856818 |
Timing control device for liquid crystal display
A timing control device for liquid crystal display including odd data driver ICs and even data driver ICs, both group of ICs being arrayed serially on one part of the liquid crystal display panel,...
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5854576 |
Method and apparatus for a finely adjustable clock circuit
A method and apparatus for generating a finely adjustable clock is accomplished by a ring oscillator, a plurality of counting circuits, and a controller. The ring oscillator generates a plurality...
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5850215 |
Display apparatus for a car
A display control circuit of a display unit is divided such that circuit portions and connecting means susceptible to noise are arranged in the display unit, while circuit portions and connecting...
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5847701 |
Method and apparatus implemented in a computer system for determining the frequency used by a graphics source for generating an analog display signal
A display unit which can determine the frequency (original frequency) used by a graphics source for generating an analog signal. A sequence of test patterns are generated according to a...
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5841430 |
Digital video display having analog interface with clock and video signals synchronized to reduce image flicker
An analog video interface for a digital video display, comprising an analog video input for receiving at least one analog video signal with composite or separate horizontal and vertical deflection...
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5838327 |
Controller for converting digital plane image data to virtual three-dimensional image data
The present invention relates to a controller for converting digital plane image data to virtual three-dimensional image data, comprising a frequency counting unit for counting frequency after...
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5838312 |
Synchronization signal processing circuit for a monitor for protecting the cathode ray tube
The synchronization signal processing circuit of a monitor for protecting the cathode ray tube includes a rectifying unit for rectifying a synchronization signal supplied from the outside; a first...
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5838311 |
Method of sampling color signal
Receiving an instruction designating a frequency f by an MPU (1), a programmable clock generator (2) generates a dot clock D which has the frequency f. The dot clock D and a horizontal...
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5828368 |
Start pulse vertical signal generator using a data enable signal for precharging
A start pulse vertical signal generator using a data enable signal for precharging is disclosed. A clock pulse vertical (CPV) signal generator generates a CPV signal by counting a main clock signal...
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5821910 |
Clock generation circuit for a display controller having a fine tuneable frame rate
A clock generation circuit for a display controller includes an intermediate dot clock generation circuit which receives an input clock signal and in response thereto generates an intermediate dot...
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5818419 |
Display device and method for driving the same
A display device, for displaying a multiple-level gray scale picture through a frame having a plurality of sub-frames which are time-divided in accordance with weight value of gray scale for each...
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5812144 |
System for performing real-time video resizing in a data processing system having multimedia capability
A video adapter for use in multimedia computer data processing system is disclosed. The video adapter is able to perform real time video resizing, such as video downscaling and upscaling, during...
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5812149 |
Liquid crystal display device which regulates display of frame image data and operation of backlight unit to reduce power consumption
In a liquid crystal display (LCD) device, two continuous frame image data to be displayed on a display unit are compared with each other by a comparator circuit, and horizontal and vertical...
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