Serial link communications protocol
US4667191A · kind A · utility
28Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1984 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | Dec 21, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/413
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An optimized method of bus contention comprising monitoring the bus for an idle or busy bus condition and either attempting an asynchronous bus access if the bus is idle or synchronously attempting a prioritized retry after a busy bus condition is sensed, after a bus access collision is sensed, and upon initial power-up, synchronized to the current message completion. The prioritization comprises a constant time delay plus a bit-time delay proportional to said accessing device's address identification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.