Techniques for transitioning control of a serial ATA device among multiple hosts using sleep and wake commands
US7111158B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Feb 5, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0673
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system has a Serial ATA device and a subsystem. The subsystem includes multiple hosts, and a communications medium which interconnects the hosts to the device. The hosts are configured to share control of the device through the communications medium. First and second hosts, when transitioning control of the device, are configured to (i) send a sleep command from the first host to the device, the sleep command directing the device to transition from a normal operating mode to a sleep mode, (ii) provide a notification signal from the first host to the second host, the notification signal indicating that the first host has released control of the device to the second host, and (iii) send a wake command from the second host to the device in response to the notification signal, the wake command directing the device to transition from the sleep mode to the normal operating mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.