Process and device for scanning a plasma panel
US6370275B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1998 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a process and device for scanning cells of a matrix-controlled display for the displaying of grey levels of a video signal, the scan being split up into sub-scans relating to each bit of column control words, characterized in that, when the coding of image does not activate the high-order bit, the processing sub-scan relating to this bit is allocated to the displaying of an additional item which corresponds to a bit of lower weight than the smallest weight of the column control word used when the condition is not fulfilled. The applications of the invention relate to matrix-controlled display devices using the principle of temporal modulation for the generation of halftones, especially plasma panels of the a.c. type with memory or d.c. type with memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.