The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1990
Filed:
Apr. 29, 1988
Applicant:
Inventors:
David J Naddor, Doraville, GA (US);
Randolph J Schaubs, Stone Mountain, GA (US);
Assignee:
Scientific-Atlanta, Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365185 ; 365228 ; 365200 ; 36518905 ; 371 66 ;
Abstract
A method of preventing a power failure from corrupting data being written to a non-volatile memory. Before a write operation is performed, information is written to a double buffer to reconstruct the steps that will be performed during the write operation. A flag is set indicating that the information in the double buffer is accurate. The write operation is then performed and the flag is cleared. The double buffer is dynamically moved throughout the non-volatile memory to distribute the wearout of the non-volatile memory as evenly as possible.