Method and system for audio transmission based on vehicle Ethernet

An Ethernet and audio technology, applied in the field of audio transmission based on vehicle Ethernet, can solve the problems of unstable radio frequency signal and high cost of coaxial cable, and achieve the effect of solving unstable radio frequency signal

Active Publication Date: 2022-04-01
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing car audio transmission system has the following problems: (1) The radio frequency signal is unstable; (2) The cost of the coaxial cable is relatively high

Method used

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  • Method and system for audio transmission based on vehicle Ethernet
  • Method and system for audio transmission based on vehicle Ethernet

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] Such as figure 1 The shown audio transmission system based on vehicle Ethernet includes HU module 3 , central gateway 2 and smart antenna module 1 .

[0028] Such as figure 1 As shown, the HU module 3 includes a HU core processor 3c, a codec chip 3d connected to the HU core processor 3c, a vehicle Ethernet PHY chip 3a and a microphone 3b, a power amplifier 3e connected to the codec chip 3d, and a The loudspeaker 3f connected to the power amplifier 3e; the vehicle Ethernet PHY chip 3a is connected to the central gateway 2.

[0029] Such as figure 1 As shown, the smart antenna module 1 includes a smart antenna core processor 1b, and a radio chip 1a (such as: FM / AM demodulation chip), a bluetooth module 1c and a smart antenna Ethernet that are respectively connected to the smart antenna core processor 1b PHY chip 1d; the smart antenna Ethernet PHY chip 1d is connect...

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Abstract

The invention discloses a method and system for audio transmission based on vehicle Ethernet, including a HU module, a central gateway and a smart antenna module; the HU module includes a HU core processor, a codec chip connected to the HU core processor, Vehicle-mounted Ethernet PHY chip and microphone, power amplifier connected with codec chip, and loudspeaker connected with power amplifier; Described vehicle-mounted Ethernet PHY chip is connected with central gateway; Described smart antenna module includes smart antenna core processor, and respectively The radio chip, bluetooth module and smart antenna Ethernet PHY chip connected with the smart antenna core processor; the smart antenna Ethernet PHY chip is connected with the central gateway. The invention can realize audio transmission with the vehicle Ethernet, and has low cost.

Description

technical field [0001] The invention belongs to the technical field of vehicle audio transmission, and in particular relates to a method and system for audio transmission based on vehicle Ethernet. Background technique [0002] The existing vehicle audio transmission system generally uses coaxial cables to transmit audio data, and the FM / AM demodulation chip and Bluetooth module are arranged at the center console. The existing vehicle audio transmission system has the following problems: (1) the radio frequency signal is unstable; (2) the cost of the coaxial cable is relatively high. [0003] With the rapid development of electronic technology, the internal network communication protocols of automobiles are emerging in an endless stream. In 1986, Bosch invented the CAN bus. In 1998, companies such as BMW, DaimlerChrysler, and Harman established the MOST Alliance, aiming to promote MOST technology as a common standard for multimedia networks. The idea of ​​LIN was first pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/48H04W4/80H04H20/62H04H40/27
CPCH04H20/62H04H40/27H04L47/805H04W4/48H04W4/80
Inventor 涂径王晓伟周游江红军刘平
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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