Stored-program controller for equalizing conditional branch delays
US4881194A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/267
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A video signal processor includes a stored-program controller which concurrently reads two instruction values from a program memory during each instruction cycle. The next instruction used by the video signal processor is selected from between these two values. If the current instruction indicates a conditional branch operation, the value of one of a plurality of conditions internal to the video signal processor determines which of these two instructions is selected. Otherwise, a value provided by the current instruction itself determines which of the two instructions is selected. This configuration of the stored program controller implements a conditional branch facility in which there is no delay in fetching an instruction for either value of the selected condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.