Tone display method
US6275271A · kind A · utility
9Cited by
7References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/7466
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tone display method is provided that can prevent image quality deterioration of the dynamic image and can avoid a cost increase. When an image with 256 tones is displayed, one field is divided into 37 subfields for one color. Among the 8 bits corresponding to the 256 tones, the six high-order bits from the third bit are displayed by means of time width modulation using 35 subfields SF3-SF37 having weights of ""4" and "8". The two low-order bits are displayed on a binary base using two subfields SF1 and SF2 whose weights are "'1" and "2", respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.