RTC circuit with time value adjustment

Details RTC circuit with time value adjustment RTC circuit with time value adjustment

2011-07-05

2011-07-05

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S034000, C713S178000, C713S400000, C713S601000, C340S010200, C340S010500

Reexamination Certificate

active

07973607

ABSTRACT:
A technique involves the use of an electronic device having a real-time clock (RTC) circuit. In particular, the technique involves obtaining an RTC value from the RTC circuit. The RTC value is based on a previous time value and being arranged to represent current time. The technique further involves generating an adjustment factor arranged to adjust for imperfection in an oscillator of the RTC circuit, and providing a new time value based on the RTC value and the adjustment factor. The new time value represents current time at least as accurately as the RTC value.

REFERENCES:
patent: 6085320 (2000-07-01), Kaliski
patent: 6130621 (2000-10-01), Weiss
patent: 6189098 (2001-02-01), Kaliski
patent: 6269163 (2001-07-01), Rivest et al.
patent: 6473607 (2002-10-01), Shohara et al.
patent: 7197639 (2007-03-01), Juels et al.
patent: 7298243 (2007-11-01), Juels et al.
patent: 7363494 (2008-04-01), Brainard et al.
patent: 2004/0172535 (2004-09-01), Jakobsson et al.
patent: 2006/0041759 (2006-02-01), Kaliski et al.

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