Data transfer system having transfer discrimination circuit
US5068820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1988 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Jun 10, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4226
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data transfer system having a transfer discrimination circuit for discriminating the type of data transfer between an input/output channel device and I/O devices for a computer includes a transfer discrimination circuit. This circuit includes a edge detection unit operating in response to a tag signal supplied to the edge detection unit for detecting the trailing edge of the tag signal after a leading edge of the tag signal has passed. The edge detection unit having a leading edge detector, a trailing edge detector, a storage element, and logic gate circuits. A timing unit is included operating in response to the output of the edge detection unit for counting a predetermined time, along with a discrimination storage unit operating in response to the output of the timing unit for delivering an output indicating an interlock data transfer or an output indicating a data streaming feature data transfer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.