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:
Feb. 10, 2004
Filed:
May. 13, 2002
John S. Kerr, Chicago, IL (US);
Bokchain Koh, Crystal Lake, IL (US);
Arthur C. Leyh, McHenry, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method of synchronizing enablement of a common clock for a main and a second processor in an electronic device having a low-power mode includes a first step of completing a communication activity by the main processor. A next step includes monitoring a clock enable signal from the second processor. A next step includes comparing the timing of the second processor with the known timing of the main processor if the second processor does not have the clock enabled in the monitoring step. A next step includes calculating the the timing needed to synchronize the clock enablement by the second processor to that of the main processor. A next step includes powering up and powering down the second processor under control by the main processor to synchronize the periodic timing of the second processor to that of the main processor.