Tone display method
US6697084B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0261
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tone display method which prevents degradation in image quality of moving images when the subfield method is utilized without an increase in cost. When tone display is performed with 256 tones with respect to one certain color, in each frame, segments 1 to 6 in time are set corresponding to the plural time-shared time bands of the color and each segment includes one or several subfields (sf). In each case, as the tone is increased by 42 (or 43) for segments 1 through 6, sequentially, the subfields in the segment being lit so that the tone is increased continuously. In each segment, the display is performed mostly according to the binary method for the subfields
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.