Invention Grant
- Patent Title: Precise sleep timer using a low-cost and low-accuracy clock
- Patent Title (中): 使用低成本和低精度时钟的精确睡眠定时器
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Application No.: US11678105Application Date: 2007-02-23
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Publication No.: US07660612B2Publication Date: 2010-02-09
- Inventor: Aykut Bultan , John W. Haim , Leonid Kazakevich
- Applicant: Aykut Bultan , John W. Haim , Leonid Kazakevich
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: US DE Wilmington
- Agency: Volpe and Koenig, P.C.
- Main IPC: H04B1/38
- IPC: H04B1/38
Abstract:
A wireless transmit/receive unit (WTRU) uses an oscillator providing accuracy for synchronized communications parameters in an active mode, and operates at reduced power during a discontinuous reception (DRX) mode. A real time clock (RTC) is used as the frequency standard during the reduced power operation, and a frequency adjustment is effected while the RTC is used as the frequency standard. By effecting the frequency adjustment, the RTC is able to be used as the frequency standard for substantial time periods, thereby reducing power consumption of the WTRU during the DRX mode.
Public/Granted literature
- US20070135081A1 PRECISE SLEEP TIMER USING A LOW-COST AND LOW-ACCURACY CLOCK Public/Granted day:2007-06-14
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