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. 31, 2016
Filed:
Mar. 31, 2011
Daniel M. Joffe, Owens Crossroads, AL (US);
Brian Smith, Madison, AL (US);
Daniel M. Joffe, Owens Crossroads, AL (US);
Brian Smith, Madison, AL (US);
ADTRAN, Inc., Huntsville, AL (US);
Abstract
A system for adjusting core voltage of an integrated circuit to optimize power savings has a ring oscillator on the integrated circuit for providing a ring oscillator signal. The system also has compare logic on the integrated circuit configured to compare the ring oscillator signal with a clock signal from a clock external to the integrated circuit. The compare logic is configured to make a determination whether a frequency of the clock signal is within a predefined margin of a frequency of the ring oscillator and to adjust the core voltage of the integrated circuit based on the determination. Through such adjustments, the core voltage is lowered while ensuring that the core voltage does not reach a point that causes timing errors.