Method and apparatus for determining the status of a shared resource
US5729765A · kind A · utility
7Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Dec 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for determining the status of a resource shared by multiple subsystems operating in mutually asynchronous clock domains apply a one-bit counter for each subsystem and synchronize the value of each such bit counter with all asynchronous clocks. Each subsystem exclusive-ORs the value of each bit counter to generate an availability status for the shared resource. System delays caused by synchronization are minimized, and circuit design and proof of correctness at the design stage are simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.