Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for compensating phase for flat screens

An image and screen technology, applied in the field of phase balance, to achieve the effect of avoiding scanning

Inactive Publication Date: 2005-01-05
FUJITSU SIEMENS COMP GMBH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The downside of this is that a software must be installed and started on the computer, and in addition this software must be available for all commonly used operating systems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for compensating phase for flat screens
  • Method and device for compensating phase for flat screens
  • Method and device for compensating phase for flat screens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] attached figure 1 It shows the control circuit of the flat image screen that can be connected through the analog interface, and its function will be described in detail with the help of different input signals and their arrangement. At the input of the control circuit there is on the one hand the video signal consisting of the three color signals R, G, B and on the other hand the two synchronization signals H-sync and V-sync for horizontal and vertical image synchronization. H-sync and V-sync are digitally transmitted, where the signal voltage is 0V or >3V. V-Sync signalization, the first column of the image is transmitted. This signal corresponds to the region between 65 and 85 Hz. H-Sync signalization, a new image line is transmitted. This signal corresponds to the column frequency and is generally located at 60kHz.

[0039] A video signal composed of color signals R, G, B is an analog signal. Signal voltages are in the 0V and 0.7V region. The pixel tick, ie the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and a device for matching the phase between the pixel clock of a graphics card and the sampling clock of a flat-panel display with an analog interface in a system comprising flat-panel display, graphics card and computer. Herein the rising edge of a video pulse of a sufficiently bright image spot in the first image column close to the back-porch region is determined. The falling edge of a video pulse at a sufficiently bright image spot in the last image column close to the front-porch region is determined, and the phase is adjusted such that the sampling instant is situated approximately at the midpoint between the rising and falling edges of a video pulse.

Description

technical field [0001] The invention relates to a method and a device for phase balancing between pixel clock and scan clock of a graphics card on a flat video screen with an analog interface in a flat video screen-graphic card-computer system. Background technique [0002] A flat graphics screen with an analog interface must match the graphics card connected to the computer. If the phase or scanning frequency is adjusted incorrectly, the image display will be unclear and interfered. [0003] When in standard mode it is possible to set the value of the image position, i.e. right-left and up-down adjustment, and to define the scan frequency as a pre-adjusted value, but this is not possible for the phase, which is dependent on the used image card and The video leads are related. [0004] According to the current state of the art, a microprocessor responsible for controlling the flat image screen is generally arranged on the flat image screen. The microprocessor is configure...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G5/00
CPCG09G5/008G09G3/2092G09G5/18
Inventor P·冯哈泽
Owner FUJITSU SIEMENS COMP GMBH