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:
Jul. 11, 2006
Filed:
Oct. 06, 2003
Timothy C. Fischer, Berthoud, CO (US);
Samuel Naffziger, Fort Collins, CO (US);
Timothy C. Fischer, Berthoud, CO (US);
Samuel Naffziger, Fort Collins, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
In one embodiment, a central processing unit (CPU) includes multiple clock zones. Each clock zone includes at least one sensor that generates a signal indicative of a power supply voltage within the clock zone, a clock generator for providing a variable frequency clock to the clock zone, a first controller for controlling a frequency of operation of the clock generator in response to the at least one sensor, wherein the first controller further controls the frequency of operation in response to communication of frequency adjustments from first controllers in other clock zones within one cycle of latency, and a second controller that provides an overdrive signal, that is combined with adjustment signals from the first controller for the clock generator, in response to communication of frequency adjustments from other clock zones beyond one cycle of latency.