Disk storage apparatus and power supply control method for the same
US6332196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1999 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A disk control apparatus according to the present invention comprising a disk controller for controlling a circuit which controls read operation for reading data from a disk and a CPU for controlling the circuit and the disk controller. The disk controller comprises a buffer memory for storing data being for transferred between a host and the disk controller and a notification section for notifying the CPU that a first state in which an all buffer region of the buffer memory is stored with data to be transferred to the host transits to a second state in which a predetermined space occurs in the buffer region of the buffer memory as a result of transferring data to the host. The CPU comprises a main control section for stopping power supply to the circuit during the first state and for supplying power to the circuit in response to a notification from the notification section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.