发明申请
- 专利标题： Real time clock calibration system
- 专利标题（中）： 实时时钟校准系统
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申请号： US11715182申请日： 2007-03-07
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公开(公告)号： US20080222440A1公开(公告)日： 2008-09-11
- 发明人: Stephen Jones , Rupinder Judge
- 申请人： Stephen Jones , Rupinder Judge
- 主分类号： G06F1/12
- IPC分类号： G06F1/12
摘要：
A temperature-based real time clock calibration system and method for performing the same. The system in one embodiment includes a real time clock calibrated against a reference frequency, a temperature sensor being operative to measure a instantaneous temperature T1, and control circuitry operative to receive and sense the temperature T1. Control logic, preferably implemented in the control circuitry in one embodiment, determines when to recalibrate the real time clock against the reference frequency based on the measured temperature T1. In one embodiment, the reference frequency is generated by a main system clock. The system may be used during sleep mode or another reduced power operating mode of an electronic device.
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