Data transferring system between host and I/O using a main buffer with sub-buffers where quantity of data in sub-buffers determine access requests
US5507005A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0656
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data transfer control apparatus for communicating data between a host device and an input/output device through a main buffer memory for temporarily holding the data, wherein a sub-buffer memory is disposed at least either between the main buffer memory and the host device or between the main buffer memory and the input/output device for temporarily storing the data, the amount of data stored in the sub-buffer memory is detected, access requests to the main buffer memory on the side of the host device or the input/output device are outputted in accordance with the detected data amount, and one of the access requests to the main buffer memory is selected in accordance with the priority order to access the main buffer memory on the basis of the selected access request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.