Data processing system with programmable graphics generator
US4296476A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2300/203
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microprocessor based data processing system including a microprocessor, a memory unit, and display unit is provided with a programmable graphics generator that transfers graphics information from the memory unit to the display unit in response to and control of a set of display instructions also stored in the memory unit. The graphics generator includes a first addressing unit for sequentially accessing the display instructions from the memory unit; a control unit for receiving, storing and decoding such instruction and for issuing supervisory and control signals in response to the binary state of each instruction; a second addressing unit for accessing graphics information from the memory unit in response to the supervisory signals from the control unit; and a third addressing unit for accessing movable object graphics stored in the memory unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.