Communication control method and apparatus, and communication system
US6452693B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1998 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/126
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A printer has a queue for queuing a queued execution command, an immediate execution agent for executing a write command, and a queued execution agent for executing a read command. The immediate execution agent immediately executes the received write command, and writes data in a host. The queued execution agent picks up a read command from the queue, and reads out data from the host. The host appends a data transfer request from the printer to a queue, issues a write command to the printer on the basis of that data transfer request, and issues a read command to the printer on the basis of a print data transmission request or the like from an application. Independent full-duplex channels can be provided in two directions. Also, a write command can be immediately processed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.