Patent
1993-07-06
1996-06-04
Harvey, Jack B.
395431, G06F 132, G06F 1200
Patent
active
055242480
ABSTRACT:
Method and apparatus for power management of a RAM subsystem of a computer. Blocks of data stored at various addresses throughout the RAM subsystem are packed into unallocated memory space at the lowest possible physical location within the RAM subsystem and then are compressed. The packed and compressed data is then copied into the minimum number of RAM devices comprising the subsystem needed to store such data. The remaining RAM devices are either deenergized, if they comprise static RAM, or not refreshed, if they comprise dynamic RAM, thereby reducing the power consumption of the subsystem. Upon a command to return from the reduced power consumption mode, the above steps are executed in the reverse order and the blocks of data are copied to their original memory address locations in said RAM subsystem, using a table that is compiled during the packing step. The invention is implemented by computer program instructions executed in the computer CPU to operate a memory controller connected to the RAM subsystem.
REFERENCES:
patent: 5148546 (1992-09-01), Blodgett
patent: 5175543 (1992-12-01), Lantz
patent: 5185883 (1993-02-01), Ianni et al.
patent: 5247638 (1993-09-01), O'Brien et al.
patent: 5260693 (1993-12-01), Horsley
patent: 5276889 (1994-01-01), Shiraishi et al.
patent: 5283905 (1994-02-01), Saadeh et al.
patent: 5390334 (1995-02-01), Harrison
Parks Terry J.
Register David S.
Dell USA L.P.
Harvey Jack B.
Huffman James
McCombs David
Wiley David A.
LandOfFree
Random access memory power management system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Random access memory power management system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Random access memory power management system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-393228