CN2894127Y

CN2894127Y - Vehicular hand free telephone controller capable of playing music

Info

Publication number: CN2894127Y
Application number: CN 200620116102
Authority: CN
Inventors: 白云飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-10
Filing date: 2006-05-10
Publication date: 2007-04-25
Anticipated expiration: 2016-05-10

Abstract

The utility model relates to a vehicle hand-free telephone controller which can play music comprising an auto audio interface, a bluetooth module, a bluetooth instruction controller, a USB data interface and an audio player. The audio player is connected with the auto audio interface through an audio power amplifier. The bluetooth instruction controller, the audio player and the data interface are interconnected through an interior signal bus, and a USB HOST controller is arranged between the USB data interface and the interior signal bus. The technic scheme of the utility model is characterized in that it fully employs the generality among the blue-tooth interface controller, the multi-format music player, and the USB HOST controller, integrating the three controllers into a mono-chip scheme to realize the blue-tooth module control, the multi-format digital music play, and the electrical files access through the USB interface. The combination of multi-format digital music play and hand-free telephone control has the advantages of simple structure and low production cost, satisfying people's market demand of listening to digital music.

Description

But the vehicle-carried hands-free telephone controller of playing back music

Technical field

The utility model relates to electronic-controlled installation, but particularly a kind of vehicle-carried hands-free telephone controller of playing back music.

Background technology

At present, in traditional auto communication controller product, major function is the volume control of voice-grade channel-Mike and earphone passage, normally only is provided with earphone/Mike's jack of mobile phone.Along with the demand of different raising of people's day, to the technical market more new problem has been proposed, for example: receive calls and listen to digital music etc. by bluetooth.The product of realizing these functions at the vehicle-carried hands-free telephone controller does not also occur at present.

The utility model content

The purpose of this utility model is to overcome the defective that conventional art exists, provides a kind of and will play multiple digital music and hands-free phone control combination together, but the vehicle-carried hands-free telephone controller of playing back music simple in structure, with low cost.

For achieving the above object, but the vehicle-carried hands-free telephone controller of the utility model playing back music, comprise car audio interface, bluetooth module and the bluetooth instruction control unit that links to each other with the bluetooth module serial ports, also comprise a data-interface and an audio player, described audio player links to each other with described car audio interface by audio-frequency power amplifier; Described bluetooth instruction control unit, audio player and data-interface interconnect by the internal signal bus.

But the vehicle-carried hands-free telephone controller of the utility model playing back music, wherein said data-interface adopts USB interface, is connected to USB HOST controller between described data-interface and the described internal signal bus.

But the vehicle-carried hands-free telephone controller of the utility model playing back music, wherein said audio player are MP3, WMA and OGG multi-format music player.

But the vehicle-carried hands-free telephone controller of the utility model playing back music, it is the circuit of single-chip integrated of AT85C51SND3 that wherein said bluetooth instruction control unit, audio player and USB HOST controller adopt model.

But the advantage of the vehicle-carried hands-free telephone controller of the utility model playing back music is: because in the auto communication Handless system, make full use of the general character of blue tooth interface controller, multi-format music player and USB HOST controller, these three controllers are integrated into single chip solution, finish bluetooth module control, play the multi-format digital music and pass through USB interface access audio file, to play multiple digital music and hands-free phone control combination together, it is simple in structure, with low cost, has satisfied the market demand that people listen to digital music.

Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that the purpose of this utility model, feature and advantage are had deep understanding.

Description of drawings

But Fig. 1 is the block diagram of the vehicle-carried hands-free telephone controller of the utility model playing back music.

Embodiment

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

With reference to Fig. 1, but the vehicle-carried hands-free telephone controller of the utility model playing back music comprises car audio interface, bluetooth module, bluetooth instruction control unit, usb data interface and audio player.Audio player links to each other with the car audio interface by audio-frequency power amplifier; Bluetooth instruction control unit, audio player and data-interface interconnect by IBUS internal signal bus.

Wherein, U1 is the bluetooth instruction control unit, links to each other with bluetooth module U4 by two external signal lines of TX1 (serial ports 1 sends) and RX1 (serial ports 1 receives), finishes the Bluetooth function in the on-vehicle Bluetooth hands-free phone controller; Link to each other with USB HOST controller U3 by IBUS internal signal bus, finish the loading of the bluetooth software in the on-vehicle Bluetooth hands-free phone controller.

U2 is the multi-format audio player, link to each other with audio-frequency power amplifier U5 by two external signal lines of L_OUT (output of L channel analogue audio frequency) and R_OUT (output of R channel analogue audio frequency), the music signal of the left and right sound channels that process power amplifier U5 amplifies is connected to the car audio interface again, finishes the music playback function in the on-vehicle Bluetooth hands-free phone controller; Link to each other with USB HOST controller U3 by IBUS internal signal bus, finish the loading of the external digital music in the on-vehicle Bluetooth hands-free phone controller.The digital music format that the multi-format music player is supported comprises: main flow digital music format such as MP3, WMA and OGG.

U3 is a USB HOST controller, embodiment of the present utility model adopts USB2.0 HOST controller, be connected to multi-format audio player U2 and bluetooth instruction control unit U1 by IBUS internal signal bus, finish the single-chip internal element interconnection in the on-vehicle Bluetooth hands-free phone controller; As the receipts of external data/send out data wire, finish the external digital music file in the on-vehicle Bluetooth hands-free phone controller or the exchange of general data file by D+ (the difference positive pole of data wire in the USB2.0 interface) and two external signal lines of D-(the difference negative pole of data wire in the USB2.0 interface).

In embodiment of the present utility model, in order to make full use of the general character of blue tooth interface controller, multi-format music player and USB2.0HOST controller, usually three controllers that need three integrated circuits to finish are integrated into the circuit of single-chip integrated scheme, and the model of this chip is AT85C51SND3.

According to the needs that the auto communication Handless system constantly develops, the utility model on-vehicle Bluetooth hands-free phone with music playback controller can adapt to people listen to digital music in car the market demand better.

Claims

1. but the vehicle-carried hands-free telephone controller of a playing back music, comprise car audio interface, bluetooth module (U4) and the bluetooth instruction control unit (U1) that links to each other with bluetooth module (U4) serial ports, it is characterized in that, also comprise a data-interface (U6) and an audio player (U2), described audio player (U2) links to each other with described car audio interface by audio-frequency power amplifier (U5); Described bluetooth instruction control unit (U1), audio player (U2) and data-interface (U6) interconnect by the internal signal bus.

2. but according to the vehicle-carried hands-free telephone controller of the playing back music of claim 1, it is characterized in that wherein said data-interface (U6) adopts USB interface, is connected to USB HOST controller (U3) between described data-interface (U6) and the described internal signal bus.

3. but the vehicle-carried hands-free telephone controller of playing back music according to claim 1 and 2 is characterized in that, wherein said audio player (U2) is MP3, WMA and OGG multi-format music player.

4. but the vehicle-carried hands-free telephone controller of playing back music according to claim 3, it is characterized in that it is the circuit of single-chip integrated of AT85C51SND3 that wherein said bluetooth instruction control unit (U1), audio player (U2) and USB HOST controller (U3) adopt model.