Dynamic polling of devices for nonsynchronous channel connection
US5201053A · kind A · utility
38Cited by
7References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Aug 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/122
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-path controller is disclosed for connecting CPU channels with DASD device subsystems. Extended channel connection time are accommodated in the polling of the devices. The request for access signals for the devices are retained for a period of time during which channel connection should be completed and then dropped. The CPU and the controller are freed to complete other work in between the polling cycles. The requests-for-access signals by the devices for connection to the channel that requested the connection does not tie up the channels and the devices while communication is being made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.