Automatic screen brightness compensating device and method thereof
US6091397A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1997 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Oct 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a cathode ray tube video display device, including: a micro computer for receiving data of factors affecting the brightness of a screen with time, computing a decreased amount of the brightness of the screen to compensate for the decreased amount and outputting a screen brightness compensation signal; and cathode ray tube controlling means for receiving the screen brightness compensation signal output from the micro computer, controlling a brightness level of a chrominance signal applied externally according to a level of the screen brightness compensation signal, and compensating the brightness of the screen which is decreased with time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.