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A self-adaptive channel search device and method and FM radio

A self-adaptive, station-mounted technology, applied in broadcasting devices, broadcast receiving circuits, electrical components, etc., can solve the problem of false stations and fake stations being mistaken for real stations, etc.

Active Publication Date: 2018-07-10
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the problems existing in the prior art, an adaptive channel search device and method and a technical solution for FM radio are now provided, aiming to solve the problem of partial pseudo-channels and False stations are mistaken for real ones; specifically include:

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  • A self-adaptive channel search device and method and FM radio
  • A self-adaptive channel search device and method and FM radio
  • A self-adaptive channel search device and method and FM radio

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0055] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0056]With the development of science and technology, people are no longer satisfied with using a dedicated FM (...

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Abstract

The invention discloses an adaptive channel searching device and method and a FM radio, which belong to the technical field of automatic channel searching. The device includes a scanning unit; a threshold setting unit connected to the scanning unit; a storage unit connected to the threshold setting unit; a channel searching unit , connected to the storage unit; the recording unit connected to the search unit; the method includes: first performing envelope detection on the received signal strengths of all frequency points in the full frequency band, and adding a preset demodulation threshold value to the envelope detection value, To form the search threshold value corresponding to each frequency point; then start the FM search process, for each searched frequency point, judge whether the received signal strength is higher than the corresponding search threshold value, and judge its lead whether the frequency energy value is higher than a preset standard pilot energy value; record the frequency points that pass the above two judgments; Taiwan is mistaken for the real problem.

Description

technical field [0001] The invention relates to the technical field of automatic channel search, in particular to an adaptive channel search device and method and an FM radio. Background technique [0002] With the development of science and technology, more and more FM radio modules are integrated into other mobile devices, such as adding FM radio functions to mobile phones and adding radio functions to vehicle-mounted devices. Although the above integration allows users to use the FM radio function more conveniently, because the PCB board wiring in general mobile devices is more complicated and there are more functional components, there will be many interference sources, and the noise generated by the interference sources will affect the normal operation. Listen to the process. At the same time, in the traditional search process, because the search threshold is fixed, sometimes the interference noise station is mistaken for the real station, and sometimes the real statio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04H60/41H04H40/18
Inventor 夏建锋
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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