Application of audio transmission data to navigation system

A data transmission and navigation system technology, applied in the field of vehicle navigation, can solve the problems of market confusion, high cost, poor compatibility, etc., and achieve the effect of unified standards and low cost

Inactive Publication Date: 2012-08-01
GUANGDONG ECAR TELEMATICS SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • Application of audio transmission data to navigation system
  • Application of audio transmission data to navigation system
  • Application of audio transmission data to navigation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] like figure 1 As shown, the application of audio transmission data in the navigation system of the present invention is to transmit information between the background system and the vehicle, and the information transmission between the background system and the vehicle is to transmit the data carrier through the voice channel , first code the map latitude and longitude coordinate data through the DTMF / FSK codec, and then send it to the user's mobile phone through the mobile phone network. After receiving the voice signal data, the user's mobile phone sends it to the DTMF / FSK codec for decoding through Bluetooth transmission. After decoding, it is stored in the main controller MCU of the vehicle. Finally, the navigation system in the vehicle terminal extracts the map coordinate information from the memory and starts the navigation service.

[0013] Further, the background system first encodes the map latitude and longitude data information through the DTMF / FSK codec, com...

Embodiment 2

[0015] like figure 2 As shown, the difference between this embodiment and the above-described implementation is that after the user mobile phone receives the voice signal data, the voice signal is sent to a device with bluetooth function and equipped with a DTMF / FSK codec, MCU and In the Bluetooth base of the wireless transmission module, after decoding, the data is transparently transmitted to the main controller MCU of the vehicle. Finally, the navigation system in the vehicle terminal extracts the map coordinate information from the memory and starts the navigation service. The wireless transmission module adopts a 2.4G wireless transmitter.

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Abstract

The invention discloses a vehicle navigation method based on digital voice transmission. According to the vehicle navigation method, information transmission is conducted among a Bluetooth module, a mobile phone with a Bluetooth function and a master control unit (MCU). The vehicle navigation method is characterized in that the information transmission conducted among the Bluetooth module, the mobile phone with the Bluetooth function and the MCU is realized through transmitting data carriers through a voice channel and then modulating and demodulating the data carriers at a background. The invention additionally discloses a terminal system of the vehicle navigation method based on the digital voice transmission, and the terminal system comprises navigation equipment, the MCU, the Bluetooth module, the mobile phone with the Bluetooth function, and the processing background for being communicated and contacted with the mobile phone, wherein the MCU is bidirectionally connected with the navigation equipment through serial ports; the Bluetooth module is communicated with an audio channel of an A / D (analog to digital) converter of the MCU; and the processing background and the navigation equipment are additionally provided with audio modulation decoder. The terminal system has the advantages that original functions of the mobile phone are utilized, a communication module does not need to be added, the cost is low and the unification of standards is easy to realize.

Description

technical field [0001] The invention relates to the technical field of vehicle navigation, and more specifically relates to an application of audio transmission data in a navigation system. 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 an application of audio transmission data in a navigation system that can effectively realize standard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/36
Inventor 殷建红王忠周彦煌
Owner GUANGDONG ECAR TELEMATICS SERVICE
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