Display apparatus having automatic adjusting apparatus
US5579029A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0464
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
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 no matter what kind of video signal is supplied. A comparator detects a video display period of a video signal a and generates a detection signal b. A counter, latch circuits, comparing circuits, and the like form information of the start position or end position of the video display period of the video signal a and period information of the video signal a. An arithmetic operation control circuit generates control information of the display size, display position, and the like from those information by arithmetic operations by using a detection signal b and a horizontal sync signal h. A memory holds the control information. The control information is read out when a power source of the display is turned on at the next time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.