Method for adjusting the overall luminosity of a bistable matrix screen displaying half-tones
US6181306A · kind A · utility
3Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0626
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for adjusting the overall luminosity of at least a part of a matrix screen, each row of the part is processed several times non-periodically to display half-tones. Each processing consists of a semi-selective operation followed by a selective operation. A delay is planned between the selective operation and the semi-selective operation, this delay being proportional to a weighting factor that is adjustable as a function of the desired overall luminosity and proportional to the time interval between the beginning of the treatment in progress and the beginning of the next treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.