Alignment of cathode ray tube video displays using a host computer processor
US6285397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1997 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Dec 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/904
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for automatically aligning video images on display devices such as cathode ray tube (CRT) monitors that use the processor and memory of a host computer to implement the alignment process. The system uses a host computer processor and previously generated correction factor data, representative of specific display distortion characteristics, to produce driver signals necessary to affect the alignment of video images on a CRT screen. The previously stored correction factor data may be retrieved from a characterization module within the display device or from any other convenient storage location. The correction factor data is processed by the host computer to produce correction control data which is transmitted, over a bi-directional serial connector, or a video connector, to the display device where the data is read by correction and driver circuitry. The specialized correction and driver circuitry set static decoders to generate the required correction signal for each distortion parameter at each location of the display screen. Correction factor data for dynamic distortion parameters may be stored in monitor memory where the data is used by waveform generators to produce dy…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.