Correction circuit and real-time clock circuit

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United States of America Patent

PATENT NO 9362920
APP PUB NO 20140247072A1
SERIAL NO

14194291

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Importance

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Abstract

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The present invention provides a correction circuit. The correction circuit includes a frequency dividing circuit, a frequency dividing coefficient operation circuit, a built-in temperature collection circuit, and a power-on and power-off detection circuit. The built-in temperature collection circuit is configured to collect a temperature of the chip; the power-on and power-off detection circuit is configured to detect power-on and power-off of the chip; the frequency dividing coefficient operation circuit is configured to calculate, according to the temperature of the chip collected by the built-in temperature collection circuit when the power-on and power-off detection circuit detects that the chip is powered off, a frequency dividing coefficient, and output the frequency dividing coefficient to the frequency dividing circuit; and the frequency dividing circuit is configured to provide, according to the frequency dividing coefficient output by the frequency dividing coefficient operation circuit, a timing pulse for a real-time clock.

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Patent Owner(s)

  • HUAWEI TECHNOLOGIES CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Shubao Shenzhen, CN 3 22
Li, Ding Shenzhen, CN 58 158
Liu, Jinxiu Shenzhen, CN 5 27

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