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. 18, 2011
Filed:
Apr. 02, 2007
Tadeusz Jarosinski, San Diego, CA (US);
Sreenidhi Raatni, San Diego, CA (US);
Tadeusz Jarosinski, San Diego, CA (US);
Sreenidhi Raatni, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Apparatus and methods for setting wakeup times in a communication device are disclosed where setting the wakeup times includes estimating the lock on time of a frequency synthesizer in order to minimize the wakeup time and extend sleep times for maximal energy savings. A disclosed apparatus includes an estimator to receive a current lock on time of a frequency synthesizer, which is the time taken by the frequency synthesizer to lock on to particular frequency after a wakeup signal has been issued to turn on the synthesizer after a sleep period. The estimator calculates a latest estimated lock on time based at least on the current lock on time of the frequency synthesizer and determines an enable signal timing information based on the estimated lock on time. The apparatus also includes a timer configured to receive the enable signal timing information and issue at least one enable signal to turn on other circuitry in the transceiver after the synthesizer lock on period based thereon. Corresponding methods are also disclosed.