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Blue teeth automative picking up free device combined with automotive video/audio system

A car, audio-visual technology, applied in the field of bluetooth car hands-free device, can solve the problem of difficult guarantee of call quality, achieve good call quality, suppress environmental noise, and eliminate echo

Inactive Publication Date: 2010-06-30
BAOTAI ELECTRONICS TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the past, the hands-free device using Bluetooth technology in the car often needs to increase the hardware equipment in the car, and it needs to be connected to the earphone and other work steps when talking, and because the car hands-free device is an open system, there is Noise, echo and feedback will produce a lot of noise, and the quality of the call is difficult to guarantee, so there are still shortcomings in terms of performance, safety and convenience of use

Method used

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  • Blue teeth automative picking up free device combined with automotive video/audio system
  • Blue teeth automative picking up free device combined with automotive video/audio system
  • Blue teeth automative picking up free device combined with automotive video/audio system

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] The UART-TX port, UART-RX port and MUTE-OUT port of the Bluetooth module are connected to the TX port, RX port and BTMUTE port of the microprocessor MCU of the car audio-visual system, and the DO port, CLK port and The CE port is connected to the DATA port, CLK port and CE port of the LCD driver, the KIN1 port and KIN0 port of the microprocessor MCU of the car audio-visual system are connected to the input end of the keyboard, and the output end of the LCD driver is connected to the input end of the LCD display. The I2CSDA port and I2CSCL port of the microprocessor MCU are connected to the DATA port and CLK port of the electronic volume system inside the audio system of the car audio-visual system, and the FLOUT port, FROUT port, RLOUT port and RROUT port of the electronic volume system are connected to the input end of the power amplifier. The output end of the powe...

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Abstract

UART port of blue teeth module is connected to input end of microprocessor of car video / audio system. Output end of the microprocessor is connected to LCD driver, keyboard, audio system of car video / audio system, and input end of servo system of the car video / audio system. Output end of LCD drive is connected to the input end of LCD display screen. PCM port of blue teeth module is connected to the input end of anti echo circuit. Through blue teeth technique, connection of blue teeth is built between blue teeth handset and blue teeth module built in car video / audio system. Voice and control command are transmitted between blue teeth handset and blue teeth module in digital form so as to realize functions such as display of incoming call, remote dialing, state conversion and state display. Using DPS, the invention eliminates echo, restrains environmental noise, realizing best quality of communication.

Description

[technical field] [0001] The invention belongs to the technical field of wireless communication, and specifically relates to a bluetooth car hands-free device combined with a car audio-visual system. [technical background] [0002] In order to improve the safety of automobiles, many countries in the world have promulgated decrees to prohibit drivers from using mobile phones, and for this reason they lose the means of communication when driving. To have both, car speakerphones have emerged. However, in the past, the hands-free device using Bluetooth technology in the car often needs to increase the hardware equipment in the car, and it needs to connect to the earphone and other work steps when talking, and because the car hands-free device is an open system, there is a Noise, echo and feedback will produce a lot of noise, and the quality of the call is difficult to guarantee, so there are still shortcomings in terms of performance, safety and convenience of use. [Content o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/60H04B5/00
Inventor 冯典
Owner BAOTAI ELECTRONICS TECH SHANGHAI