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Vehicle-mounted system and method for eliminating interference sound

An in-vehicle system, a technology for eliminating interference, applied in the direction of reducing electrical interference, can solve problems such as impact, TDDNoise audio signal impact, etc., to achieve the effect of solving the impact

Active Publication Date: 2015-08-26
SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem solved by the present invention is to provide a vehicle-mounted system and its method for eliminating the interference sound TDD Noise, solve the problem of the influence of TDD Noise on the audio signal in the prior art vehicle-mounted system, and effectively solve the problem that the above-mentioned interference sound has on the user experience of the vehicle-mounted system influences

Method used

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  • Vehicle-mounted system and method for eliminating interference sound
  • Vehicle-mounted system and method for eliminating interference sound

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Embodiment Construction

[0046] In the prior art, the TDD noise generated by the communication module of the vehicle system interferes with the analog ground from the digital ground, which directly affects the audio circuit of the vehicle system, thereby seriously affecting the user experience of the vehicle system. figure 1 It is a structural schematic diagram of the vehicle-mounted system in the prior art. Such as figure 1 As shown, the vehicle-mounted system in the prior art generally includes: a communication module 103, a power supply circuit 100 suitable for providing power, an audio circuit 104 suitable for processing various audio signals, and an audio signal suitable for processing the audio circuit 104 The audio power amplifier 102 output to the speaker 105, the power management unit 101 adapted to supply power to the communication module 103 and the audio circuit 104, the power management unit 101, the audio power amplifier 102 are respectively connected to the power circuit 100, so The po...

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Abstract

The invention discloses a vehicle system and a method for eliminating noise. The vehicle system comprises a communication module, a power circuit suitable for supplying power, an audio circuit suitable for processing all types of audio signals, an audio power amplifier suitable for outputting audio signals processed by the audio circuit to a loudspeaker, a power management unit suitable for supplying power to the communication module and the audio circuit, wherein the power management unit and the audio power amplifier are respectively connected with the power circuit; the power circuit, the power management unit and the communication module are connected to the digital ground; the audio circuit is connected to the analog ground; the vehicle system further comprises an energy storing and filtering circuit and a first magnet bead, wherein the energy storing and filtering circuit is suitable for filtering and storing the power supply output by the power management unit, and the first magnet bead is suitable for connecting with the digital ground and the analog ground, and the energy storing and filtering circuit is connected with the power management unit, the communication module and the digital ground; and radiating fins of the audio power amplifier are connected to the digital ground. With the adoption of the technical scheme, the influence of the TDD Noise on the vehicle system can be eliminated.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to a vehicle-mounted system and a method for eliminating interference sounds. Background technique [0002] With the rapid development of the automotive electronics industry, Global System for Mobile Communications (GSM, Global System for Mobile Communications) / General Packet Radio Service (GPRS, General Packet Radio Service) / Enhanced Data Rate GSM Evolution (EDGE, Enhanced Data Rate for GSM Evolution) and other mobile communication technologies have been widely used in vehicle systems. Users can use the mobile communication module on the vehicle system to make calls or connect to the mobile broadband network to obtain Internet network services. [0003] However, since the 2G mobile communication system adopts Time Division Multiple Access (TDMA, Time Division Multiple Access) technology, the common time division distortion noise (TDD Noise, Time Division Distortion Noise)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B15/02
Inventor 张杰
Owner SHANGHAI PATEO ELECTRONIC EQUIPMENT MANUFACTURING CO LTD
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