Method and system for minimizing power demands on portable computers and the like by refreshing selected dram cells
US5148546A · kind A · utility
Inventor
Key dates
| Filing date | Feb 19, 1992 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Feb 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/4067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for minimizing power consumption in personal computers and for controlling the power requirements of a random access memory based upon the actual RAM requirements of given software application. Using this method and system, a predetermined number of rows of RAM storage capacity may be refreshed at any given time and at a controlled refresh frequency after a central processing unit has read a given software program to determine its data storage requirements. A novel RAM control system is connected between the output of the central processing unit and one or more inputs to the RAM storage stage and is operative in a novel manner to generate RAM row refresh signals to only a selected number of rows of memory cells within the random access memory stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.