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A frequency calibration method and electronic equipment

An electronic equipment and frequency calibration technology, applied in the field of communication, can solve the problems of low calibration accuracy and single XO frequency calibration method.

Active Publication Date: 2019-01-15
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides an information processing method and electronic equipment, which are used to solve the technical problems of relatively single frequency calibration method and low calibration accuracy of XO

Method used

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  • A frequency calibration method and electronic equipment
  • A frequency calibration method and electronic equipment
  • A frequency calibration method and electronic equipment

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Embodiment Construction

[0052] The embodiment of the present invention provides a frequency calibration method, which is applied to an electronic device, and the method includes: receiving a transmission signal when the electronic device is in a working state where no voice service or data service is performed; demodulating the transmission signal , Obtain the first demodulation frequency; wherein, the first demodulation frequency is the frequency corresponding to the signal obtained after demodulating the transmission signal; determine the frequency between the first demodulation frequency and the transmission frequency Error; wherein, the transmission frequency is the frequency point of the channel for transmitting the transmission signal; determine whether the frequency error between the first demodulation frequency and the transmission frequency is less than the first preset frequency error; if not, adjust the The first load capacitance of the oscillation circuit corresponding to the crystal oscill...

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Abstract

The invention discloses a frequency calibration method, used for solving the technical problem that a crystal oscillator in electronic equipment is relatively single in frequency calibration manner and relatively low in calibration precision. The invention discloses a frequency calibration manner for the crystal oscillator; and namely, frequency calibration of the crystal oscillator is carried out when the electronic equipment does not perform voice service and data service. By means of the frequency calibration method disclosed by the invention, the precision and the accuracy for frequency calibration can be improved; frequency deviation of the crystal oscillator due to the factors, such as temperature and device aging, can be reduced as much as possible; and the frequency stability of the crystal oscillator is improved. The invention further discloses the corresponding electronic equipment.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a frequency calibration method and electronic equipment. Background technique [0002] With the continuous development and wide application of electronics and communication technology, modern electronics and communication equipment are increasingly becoming an indispensable part of people’s lives. Oscillators are an important part of most electronic equipment that provides system timing for electronic systems. It is widely used in various electronic devices such as mobile communication systems, broadcasting, televisions, computers, remote controls, etc., and has attracted more and more attention. For example, XO (Crystal Oscillator), due to its excellent performance of high precision and high stability, is widely used in communication networks, wireless data transmission, high-speed digital data transmission and other fields. [0003] For oscillators, the performance ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/12H04B1/10H04B1/04
Inventor 任健单文英
Owner LENOVO (BEIJING) LTD