Apparatus for processing images, and method and computer program product for detecting image updates
US8045828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2008 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The address calculating unit calculates a virtual address of a page for each pixel of a rectangular region of a predetermined size that is included in a screen. The acquiring unit acquires a physical address in correspondence with the virtual address of each pixel of the image information for which writing is requested, in accordance with a conversion table. The writing unit writes the image information for which writing is requested at the acquired physical address. The detecting unit detects an updated portion of the image information the content of which does not match before and after the writing, in units of pages. The compressing unit compresses the image information of the updated portion that is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.