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Normal frequency error correction method and device and electronic equipment

A nominal frequency, error correction technology, applied in the direction of automatic power control, electrical components, pulse technology, etc.

Pending Publication Date: 2020-09-25
中国地质科学院地球物理地球化学勘查研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is currently difficult to effectively overcome the error between the actual frequency and the nominal frequency

Method used

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  • Normal frequency error correction method and device and electronic equipment
  • Normal frequency error correction method and device and electronic equipment
  • Normal frequency error correction method and device and electronic equipment

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the technical solutions of this application will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of this application, not all of them. 的实施例。 Example. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0040] The terms "including" and "having" and any variations thereof mentioned in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units not listed, or optionally also Including other steps or units inherent...

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Abstract

The invention provides a nominal frequency error correction method and device and electronic equipment, relates to the technical field of oscillators, and solves the technical problem that an error between an actual frequency and a nominal frequency of a clock source is difficult to effectively eliminate. The method comprises the following steps: based on a time service signal and a clock signal output by a clock source, measuring the number of pulses output by the clock source in a time service pulse interval, and calculating the sliding cumulative sum of the number of pulses in a plurality of continuous time service pulse intervals, wherein the time service pulse interval is the pulse interval of the time service signal; calculating an error correction coefficient according to the valueof the sliding accumulation sum; if the pulse number reaches the value of the error correction coefficient, carrying out inversion processing on a clock signal output by the clock source so as to correct a frequency error of the clock source.

Description

Technical field [0001] This application relates to the technical field of oscillators, and in particular to a method, device and electronic equipment for correcting nominal frequency errors. Background technique [0002] At present, quartz crystal oscillators will experience aging during use, and this aging is generally manifested as a decrease in the output signal frequency. [0003] According to this characteristic, in a system that uses a quartz crystal oscillator as a local clock source, in order to prolong the service life of the quartz crystal oscillator, the output frequency of the oscillator is often slightly higher than its nominal frequency. In actual use, this nominal frequency error needs to be overcome. However, it is currently difficult to effectively overcome the error between the actual frequency and the nominal frequency. Summary of the invention [0004] The purpose of the present invention is to provide a method, device and electronic equipment for correcting th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/00H03K21/00
CPCH03L7/00H03K21/00
Inventor 郑采君孙夫文刘昕卓李勇丁卫忠李建华林品荣
Owner 中国地质科学院地球物理地球化学勘查研究所