Multiple memory image display apparatus
US4849745A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jan 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/393
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image display apparatus, a frame memory for storing original data and a display memory for storing display data are used as memories for storing image data. The image data is read out from the display memory and is displayed by a display system. When image data transfer from the frame memory to the display memory is performed through a programmable data conversion memory, data conversion is performed as image processing. The image display apparatus has a masking memory having an image area corresponding to the frame memory. The masking memory stores image data indicating a desired transfer area in the frame memory as a mask pattern in advance. The image data transfer from the frame memory to the display memory is performed only for an area designated by the masking memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.