Soft display word processing system with multiple autonomous processors
US4110823A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Feb 17, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A distributed function processing system utilizing a conventional microprocessor operated as a text processor in combination with a plurality of other autonomous processing devices arranged to operate in a coherent processing system. One of the autonomous processors which is a memory control processor serves to periodically overlay a random access accelerator memory with the contents of a main memory system and concurrently resolves conflicts among various other autonomous memory service requests. This processor, therefore, accommodates the data rates of the main memory. The other processor is a display processor which generates signals to a video display system to provide a visual interface to the user and is therefore tied to the video rate. Accordingly, the processing burden is distributed within processors entailing differing rates operating autonomously. The memory control processor resolves and accommodates all of the memory service requests in the system and also performs control operations to support high speed I/O devices. Logic is provided to handle the other interrupts. Also, there is page mapping for context switching of a reference page and repeating logic for decoupli…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.