Title: Real-time clock device and current time compensating method
Application Number: 200610103495 Application Date: 2006.07.25
Publication Number: 1909375 Publication Date: 2007.02.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03L7/00;H03L7/08;H03L7/18
Applicant(s) Name: LG Electronics (China) Research Address:
Inventor(s) Name: Goo Bon Hyek
Attorney & Agent: li guangsong
Abstract:
    Disclosed is a real-time clock device and current time compensating method for automatically compensating the time error belonging to the timing unit. The real-time clock device contains: a RTC oscillation part used for outputting the real-time clock; a RTC system clock oscillation part for providing the compensating error and driving system; a RTC time output part for receiving the clock signal of the RTC oscillation part to calculate the current time to output, and periodically detecting the error value of the RTC and the error information with the aggregated error, using the error information to compensate the current output error and to output. The TCXO etc system clock oscillation unit with general system clock for outputting and high accuracy and temperature compensation function is used to calculate the own error of the RTC clock to compensate, without receiving the label time information from the outside to realize the high accuracy output of the current information, so the manufacturing cost of the electronic means is reduced markedly.
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