Apparatus for giving priority to certain data signals
US4208714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Feb 21, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an apparatus in a computer system for transmitting signals from one processor to one or several other processors connected to the same bus system so that the signals having priority are transmitted without time delay and that the sequence of signals without priority is not changed. Each processor contains a sender buffer for sending all the signals and a queue buffer for storing signals without priority. If signals having no priority prevent signals having priority from being transmitted through the bus system because of congestion in the receiving equipment, the apparatus allows such signal having no priority to move from the sender buffer to the first place in said queue buffer. The apparatus also includes detecting means which activate a logical circuit when the following conditions are fulfilled: PA1 a the sender buffer is occupied; PA1 b there is congestion in the receiving device; PA1 c the signal in the sender buffer is a signal without priority; and PA1 d a signal having priority is to be fed into the sender buffer When the logical circuit is activated it delivers an output to a control signal circuit which, when activated, produces a signal on a fi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.