Protocol for inter-processor dialog over a communication network
US4376982A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/161
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A communication system includes a plurality of requestors and a plurality of responders representing resources. A protocol exercised by all elements provides accurate and consistent interconnection of all elements in a system where messages may be delayed or lost. Requestors are provided with means to transmit a request for use of a plurality of resources, respond to acceptances from one or more responders and create a cooperative relationship by transmitting a confirmation to one responder and cancellation of the request to all other responders. Responders become committed to a requestor by signalling an acceptance to a request if a previous acceptance has not been transmitted, or if the resource is not already committed to another requestor, and a subsequent confirmation signal is received. The responder does not become committed after transmitting an acceptance if the next signal directed to it from the requestor is a request cancellation. Request signals and cancellation signals by a requestor can either be broadcast simultaneously to all responders of a class or transmitted to particular, designated responders, one at a time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.