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:
Sep. 01, 1998
Filed:
Nov. 18, 1996
Applicant:
Inventors:
Chang Hee Hong, Fremont, CA (US);
John H Pasternak, Campbell, CA (US);
Assignee:
Waferscale Integration, Inc., Fremont, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
307 80 ; 365226 ;
Abstract
A unit for maintaining the value of information regarding the state of a device during battery power includes one local latch per bit of state to be maintained. The latch is powered by a switched power supply which switches between main and battery power supplies. The latch latches the value of the bit of state when the value of the bit of state is valid and the power of the device is significant and maintains the value otherwise, typically during battery operation.