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. 22, 2008
Filed:
Jun. 18, 2001
John G. Mcdonough, La Jolla, CA (US);
Juncheng C. Liu, San Diego, CA (US);
Yan Hui, San Diego, CA (US);
Chunhao Chen, San Diego, CA (US);
John G. McDonough, La Jolla, CA (US);
Juncheng C. Liu, San Diego, CA (US);
Yan Hui, San Diego, CA (US);
Chunhao Chen, San Diego, CA (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A sleep control system and method are provided that permit a reference clock and the direct sequence spread spectrum (DSSS) modem in a mobile station receiver to be turned off and turned back on at arbitrary points in time while still maintaining accurate base station system time. Accurate timing is made possible through a number of techniques including precise initial calibration using a rising edge/falling edge averaging system, determining the sleep clock and reference clock frequencies, and the determination of the frequency drift of the sleep clock that occurred during the previous sleep interval.