Image processing apparatus and image processing method
US7495669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Jan 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T1/0007
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To provide an image processing technique compatible with both a CCD and a CIS, which controls storage of image data read by each device in a memory and the read of the stored data for each rectangular area to obtain a high memory efficiency, an image processing apparatus includes a memory area control section which sets, for image data bitmapped on a first memory, a rectangular area divided in a main scanning direction and sub-scanning direction, an address generation section which generates address information to read out image data corresponding to the rectangular area in correspondence with the set rectangular area, a memory control section which reads out the image data corresponding to the rectangular area and DMA-transfers the image data to a second memory in accordance with the generated address information, and an image processing section which executes image processing for each rectangular area of the DMA-transferred data by using the second memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.