Parallel mode on-screen display system
US6195078A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/641
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An on-screen display generator includes a character buffer containing a plurality of entries, and an attribute buffer also containing a plurality of entries. Each entry in the character buffer has a corresponding entry in the attribute buffer. The entries in the character buffer each specify a display character, and the corresponding entry in the attribute buffer specifies the display attributes of the display character. Control circuitry retrieves corresponding entries from the character and attribute buffers substantially simultaneously, and generates a signal representing the image of the display character specified in the retrieved display character entry having the attributes specified in the retrieved attribute entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.