Method and apparatus for resisting to higher harmonic interference of camera MIPI (Mobile Industry Processor Interface) bus and mobile terminal

Abstract

The embodiment of the invention provides a method for resisting to higher harmonic interference of a camera MIPI (Mobile Industry Processor Interface) bus. Corresponding relations between RF (Radio Frequency) communication frequency bands capable of being used by a mobile terminal and safety frequencies of the camera MIPI bus are pre-stored in the mobile terminal, wherein higher harmonics generated when the camera MIPI bus works at the safety frequencies cannot fall in a range of the corresponding RF communication frequency bands. The method comprises the steps of detecting an RF communication frequency band currently used by the mobile terminal; according to the corresponding relations, searching the safety frequency of the camera MIPI bus, which corresponds to the RF communication frequency band currently used by the mobile terminal; and setting a current working frequency of the camera MIPI bus to be the searched safety frequency of the camera MIPI bus. By setting the working frequency of the camera MIPI bus to be the searched safety frequency, higher harmonic interference of the camera frequency is avoided from the source.

Description

technical field [0001] The invention relates to the field of mobile application processors, in particular to a method, device and mobile terminal for resisting high-order harmonic interference. Background technique [0002] The development of mobile terminal technology has made high-resolution screens and high-pixel cameras necessary. [0003] The improvement of camera pixels will generate a larger amount of data, which in turn requires the MIPI (Mobile Industry Processor Interface, Mobile Industry Processor Interface) bus to be used for data transmission. The operating frequency is getting higher and higher, which will inevitably generate High-order harmonics, some of which will fall within the radio frequency communication frequency range, will be received by the antenna of the mobile terminal itself, which will eventually reduce the receiving sensitivity of the antenna, and even affect the normal communication of the mobile terminal in severe cases . [0004] The existi...

AI Technical Summary

Problems solved by technology

However, the inventors of the present invention found in the research that the greater the attenuation of the high-frequency filter circuit, the better the filtering effect of the high-order filter, but at the same time it also has a greater impact on the waveform of the MIPI signal, resulting in unqualified quality of the MIPI signal ; The smaller the attenuation of the high-frequency filter circuit, the smaller the impact on the waveform of the MIPI signal, but at the same time the filtering effect on the high-order filter is also worse

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