Utilizing an ACPI to maintain data stored in a DRAM
US7020040B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/4067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and related apparatus for utilizing an ACPI to maintain data stored in a DRAM includes a processor, a DRAM, a south bridge chipset, and a rechargeable battery device. The south bridge chipset includes a system controller, a buffer, a memory controller, an integrated device electronics controller, and a data conversion circuit. The data conversion circuit converts a hard-disk access command transmitted from the system controller into a memory access command of the memory controller. The memory controller accesses the buffer and the DRAM by executing the memory access command. When the computer system enters a power-saving mode, a switch is turned on allowing the battery device to constantly self-refresh the DRAM for maintaining the data stored in the DRAM. When the computer system powers up, the switch is turned off and the battery device is recharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.