Constant data rate brightness control for an AC plasma panel
US4414544A · kind A · utility
15Cited by
9References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1981 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | Jun 12, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0626
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A constant data rate brightness control for an AC plasma panel is disclosed in which a waveform ROM is used to store two groups of control signals. The first group performs sustain, write, erase, and bulk-erase functions in a normal manner emitting two pulses of light per cycle. The second group performs the same functions with emission of substantially no light. By mixing functions from the two groups and varying the ratio of the two groups, a broad range of variable brightness in the operation of the plasma panel is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.