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:
Nov. 08, 2016
Filed:
Mar. 10, 2014
Apple Inc., Cupertino, CA (US);
Cyril de la Cropte de Chanterac, San Francisco, CA (US);
Kieran Poulain, San Francisco, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A method and apparatus to alter acoustic noise induced by processor performance changes is disclosed. In one embodiment, a processor having one or more processor cores may execute instructions of one or more applications. The performance level (e.g., supply voltage and/or clock frequency) may be adjusted in accordance with workload demands. One or more of the applications executing on a core of the processor may exhibit periodic behavior, thereby causing periodic changes (e.g., increases) in the performance level. Performance monitoring may be conducted and may detect the periodic changes in the workload of the application. Responsive to the detection of the periodic changes, a power management unit may subsequently cause future performance level changes associated with the application to occur aperiodically.