Pixel input-output method, image compressing method, pixel input-output apparatus, image compressing apparatus, image processing apparatus, image forming apparatus, computer program and recording medium
US8131092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32358
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When inputted pixels from an input DMA unit, a packing unit outputs data package. One data package consists of α inputted pixels. A memory control unit writes, on a write line memory at a write interval, the data package that is outputted by the packing unit. The write interval is α times longer than an input interval at which the pixels are inputted into the packing unit. During the writing process, the memory control unit reads out another data package from a read line memory at a read interval that is the same as the input interval. In addition, the memory control unit treats the write line memory as the read line memory, after completing the writing process. Alternatively, the memory control unit treats the read line memory as the write line memory, after completing the reading process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.