Method of operating a disk drive for reading and writing audiovisual data on an urgent basis
US6690882B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1999 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Sep 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of operating an audiovisual disk drive having a default audiovisual mode for more efficiently transferring audiovisual data from or to a host pursuant to audiovisual host commands. The innovative method includes the steps of receiving a new transfer command requiring the transfer of a data segment associated with the audiovisual data stream; determining an absence or presence of an urgent condition with regard to the new transfer command; according standard precedence to processing the audiovisual data stream associated with the new transfer command as specified by the default operating mode in the determined absence of the urgent condition; and according urgent precedence to processing the audiovisual data stream associated with the new transfer command over attending to the other drive operation in the determined presence of the urgent condition without regard to the default operating mode. The preferred embodiment determines the absence of presence of the urgent condition by testing an urgent bit that may be set or reset by the host in each audiovisual host command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.