Multi-tasking low-power controller having multiple program counters
US5630130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1994 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Aug 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multitasking controller comprising task storage means (2) for storing up to N tasks (P0,P1,P2,P3) each comprising a sequence of instructions, a microprocessor for processing, by time-sharing, a plurality of such N tasks, and a random access memory (12) for storing variable data created and used by said microprocessor. The microprocessor further comprises a scheduler (7) realized in hardware for controlling the use of said microprocess or by such processes, and program counter storage means for storing N program counters (Pc0,Pc1,Pc2,Pc3) each for use by the scheduler (7) is able select a different one of the program counters (Pc0,Pc1,Pc2,Pc3) when the task processed by the microprocessor is changed without the transfer of data from the random access memory (12). FIG. 1
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.