Patent · US Active

Selective volatile memory refresh via memory-side data valid indication

US10878880B2 · kind B2 · utility

0Cited by

1References

23Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Yanru Li · San Diego, US
Dexter Tamio Chun · San Diego, US
Pratik Patel · Bengaluru, IN

Key dates

Filing date	Sep 20, 2018
Grant date	Dec 29, 2020
Priority date	—
Expiry date	Nov 13, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG11C11/40611
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems, methods, and computer programs are disclosed for refreshing a volatile memory. An embodiment of a method comprises storing, in a volatile memory device comprising a cell array having a plurality of rows with a corresponding row address, a table specifying one of a data valid indicator and a data invalid indicator for each of the plurality of row addresses. The data valid indicator specifies that the corresponding row is in use, and the data invalid indicator specifies that the corresponding row is not in use. A memory controller initiates a refresh command. In response to the refresh command, the rows having the data valid indicator are refreshed while the rows having the data invalid indicator are skipped.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.