Methods and systems for providing halftone screens
US6956676B2 · kind B2 · utility
1Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2001 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Jun 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4058
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Halftone generating methods and systems convert continuous tone anti-aliased image data to halftone image data using halftoning techniques that efficiently use memory resources. One of a plurality of Holladay counters is selected and the address bits from the selected Holladay counter are output to a look-up table that efficiently stores various halftone screens. Halftone image data is then output. If necessary, the halftone image data is unpacked and replicated as required depending on the resolution requirements of the halftone screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.