Onboard navigation method based on digital speech transmission and terminal system

A car navigation and digital voice technology, applied in the field of car navigation, can solve the problems of high cost, market confusion, poor compatibility, etc., and achieve the effect of low cost and unified standards

Active Publication Date: 2011-09-07
GUANGDONG ECAR TELEMATICS SERVICE
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AI Technical Summary

Problems solved by technology

[0002] The car navigation system of the prior art generally has the bluetooth function. Data transmission generally uses the data channel to transmit relevant information, and different manufacturers need to set up their own wireless modules. Using such a transmission method, the products launched by different manufacturers have different Poor compatibility with each other, which causes confusion in the market and high cost

Method used

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  • Onboard navigation method based on digital speech transmission and terminal system
  • Onboard navigation method based on digital speech transmission and terminal system

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Embodiment Construction

[0008] like figure 1 As shown, the terminal system of the vehicle navigation method based on digital voice transmission of the present invention includes a navigation device, a main controller MCU and a mobile phone with a bluetooth module and a processing background for communicating with the mobile phone, and the main controller MCU passes through The serial port is bidirectionally connected to the navigation equipment, and the Bluetooth module is connected to the audio channel of the A / D of the main controller MCU. The processing background and the navigation equipment are also provided with an audio modulator to separate the digital information in the voice channel sent by the Bluetooth module. , or decode the digital signal of processing background and navigation equipment into audio signal, and transmit it to the mobile phone with Bluetooth module.

[0009] The working process of the present invention is as follows: a push-to-talk button is set on the navigation device, ...

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Abstract

The invention discloses an onboard navigation method based on digital speech transmission, which realizes information transmission between a Bluetooth module and a mobile phone having a Bluetooth function and a main control unit. The onboard navigation method is characterized in that the information transmission between the Bluetooth module and the mobile phone having the Bluetooth function and the main control unit is realized by the steps of transmitting a data carrier via a speech channel and then carrying out modulation and demodulation in background. The invention further discloses a terminal system of the onboard navigation method based on digital speech transmission, which comprises navigation equipment, a main control unit (MCU), the Bluetooth module, the mobile phone having the Bluetooth function and a processing background under communication with the mobile phone, wherein the MCU is in bidirectional connection with the navigation equipment via serial ports, the Bluetooth module is communicated with an audio channel of an A / D (Analog / Digital) converter of the MCU, and the processing background and the navigation equipment are further provided with audio modems. Accordingto the invention, a communication module is not needed on the basis of original functions of mobile phone, the cost is low and the unified standard can be easily implemented.

Description

technical field [0001] The invention relates to the technical field of vehicle navigation, and more specifically relates to a voice transmission method and system in the process of vehicle navigation. Background technique [0002] The vehicle navigation system of the prior art generally has the Bluetooth function. Data transmission generally uses a data channel to transmit relevant information, and different manufacturers need to set up their own wireless modules. Using this transmission method, the products launched by different manufacturers have different The compatibility between them is poor, which leads to more confusion in the market and higher costs. How to solve this problem and realize the unification of product standards among different manufacturers has become an urgent need at present. Contents of the invention [0003] The object of the present invention is to provide a voice transmission method and system in the car navigation process based on digital voice...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/12H04W88/02
Inventor 殷建红崔贤伟黎坚华
Owner GUANGDONG ECAR TELEMATICS SERVICE
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