Image processing apparatus
US5467442A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Sep 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an image processing apparatus, a plurality of different images are displayed simultaneously on a display screen. According to a first feature, a priority circuit determines a display order of images for each dot, the images being supplied from a variety of image generators. In accordance with the priority order, the images are displayed on a screen. According to a second feature, an image processing apparatus includes a register for specifying a key area to be displayed as being transparent. A plurality of images are synthesized in accordance with the data held in the register. According to a third feature, a video display processor (VDP) processes color data of an image to be displayed, and a video encoder unit synthesizes a plurality of images in a predetermined order of a display priority by a cellophane function. The cellophane function is controlled to be turned on and off for each unit of a predetermined data block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.