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Electronic device and clock calibrating method thereof

An electronic device and clock correction technology, which is applied to electronic timers, broadcasting devices, radio-controlled timers, etc., and can solve the space problem of thin and light electronic products, obstacles to the development of electronic products, time information accuracy errors, and low accuracy of date and time information. question

Inactive Publication Date: 2010-02-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the circuit accuracy of the electronic device and the influence of the power supply, the accuracy of the time information will produce errors, making the accuracy of the date and time information of the electronic device not high.
[0003] Usually electronic products use a spare lithium battery to supply power to the real-time clock when the electronic product is turned off, which requires a space for placing a spare battery in the electronic product. The problem is an obstacle to the development of electronic products towards thinner and lighter

Method used

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  • Electronic device and clock calibrating method thereof
  • Electronic device and clock calibrating method thereof

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Embodiment Construction

[0015] This embodiment provides an electronic device, which can automatically receive broadcast signals of a wireless data broadcast system and acquire time information therein, and then automatically correct a clock through a time calibration module of the electronic device. The wireless data broadcasting system uses sub-carriers in the FM broadcasting transmission signal to send information such as station name, program type, program content and time in digital form. Tuners capable of over-the-air data broadcasting systems can recognize these digital signals. The main feature of the wireless data broadcasting system is to utilize the existing FM broadcasting resources, because the digital code inserted in the broadcasting signal has a time base transmission.

[0016] Such as figure 1 As shown, the electronic device 100 includes: a time calibration module 10 , a radio frequency modulation module 30 and a clock module 50 . The time calibration module 10 is used for receiving...

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Abstract

The invention provides an electronic device, comprising a clock module, a broadcast frequency modulation module and a time calibration module; the clock module is used for providing time information;the broadcast frequency modulation module is used for receiving broadcast signals and carrying out signal decoding; the time calibration module is used for obtaining the time information in the decoded broadcast signals and calibrating the clock of the clock module according to the time information; the time calibration module triggers and starts the broadcast frequency modulation module accordingto the time calibration order generated by user operation; the time calibration module triggers and starts the broadcast frequency modulation module according to the preset and generated time calibration order; in addition, the invention also provides a clock calibrating method of the electronic device.

Description

technical field [0001] The invention relates to an electronic device and a clock correction method thereof, in particular to an electronic device for automatically correcting a clock and a clock correction method thereof. Background technique [0002] At present, many electronic products are equipped with electronic clocks to provide date and time information for the devices, such as mobile phones, PDAs and other electronic devices have this function. However, due to the circuit precision of the electronic device and the influence of the power supply, the accuracy of the time information will produce errors, so that the accuracy of the date and time information of the electronic device is not high. [0003] Usually electronic products use a spare lithium battery to supply power to the real-time clock when the electronic product is turned off, which requires a space for placing a spare battery in the electronic product. The problem is the hindrance to the development of elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04H20/28H04H40/00G04G5/00
CPCG04G5/002H04H40/18H04H60/68G04R20/14
Inventor 刘光振
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD