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:
Oct. 14, 2008
Filed:
May. 05, 2004
Eric L. Henderson, San Diego, CA (US);
Michael Drop, San Diego, CA (US);
Tauseef Kazi, San Diego, CA (US);
Eric L. Henderson, San Diego, CA (US);
Michael Drop, San Diego, CA (US);
Tauseef Kazi, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods and apparatus for implementing a Dynamic Voltage Scaling (DVS) system are presented herein. In one embodiment, an embedded delay checker (EDC) cell is used to measure the actual activity and delay of a critical path within a microprocessor core, which is the basis for dynamically altering the voltage to the core. In another embodiment, a slaved ring oscillator (SRO) cell is placed adjacent to the microprocessor core and is used along with EDC cells to provide redundancy to a DVS system.