Image processing apparatus and method, and storage medium
US6967745B1 · kind B1 · utility
19Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2000 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Sep 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/648
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When highly redundant information that expresses five tones using 4 bits is transferred to a printer in terms of a unit data length in data transfer, efficiency is very poor. Hence, multi-valued data is quantized to 5-valued data, which is output as a 4-bit code that can express five values. 4-bit codes for three bits are combined to be converted into an 8-bit code. The 8-bit codes are packed into data of a 16-bit unit, and the packed data is transferred to the printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.