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:
Apr. 17, 2012
Filed:
Apr. 08, 2008
Brian J. Cagno, Tucson, AZ (US);
John C. Elliott, Tucson, AZ (US);
Robert A. Kubo, Tuscon, AZ (US);
Gregg S. Lucas, Tucson, AZ (US);
Brian J. Cagno, Tucson, AZ (US);
John C. Elliott, Tucson, AZ (US);
Robert A. Kubo, Tuscon, AZ (US);
Gregg S. Lucas, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A memory system has mechanisms for scavenging capacity of a super capacitor by removing, or reducing, system load from the super capacitor when the super capacitor voltage decays below a low threshold. The mechanisms then restore the system load to the super capacitor when the super capacitor voltage ramps back above a high threshold. A controller may reduce system load by placing a volatile memory system in a standby state and disabling a field effect transistor to remove power from a non-volatile memory system. A controller may adjust the high threshold and/or a low threshold by setting a digitally controlled potentiometer in a threshold detect circuit via an IC bus.