Utilizing an ACPI to maintain data stored in a DRAM

Details Utilizing an ACPI to maintain data stored in a DRAM Utilizing an ACPI to maintain data stored in a DRAM

2006-03-28

2006-03-28

Peikari, B. James (Department: 2189)

Static information storage and retrieval

Powering

Data preservation

C365S228000, C365S227000, C365S226000, C365S222000, C711S104000, C711S105000, C711S106000, C713S300000, C713S320000, C713S330000

Reexamination Certificate

active

07020040

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.

REFERENCES:
patent: 6128747 (2000-10-01), Thoulon
patent: 6542996 (2003-04-01), Chang et al.
patent: 6633987 (2003-10-01), Jain et al.

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