CN2415986Y - The operating circuit of the hands-free phone and charging device in the car - Google Patents

Abstract

An operation circuit of hand-free telephone and charging device in car is composed of a charging circuit for providing power to operation circuit by connecting the power supply to the socket of cigarette lighter and charging mobile telephone via signal interface, a receiving circuit for transmitting the received signal to signal control unit via signal interface and amplifying it, and a receiving circuit for receiving the speech signal from microphone, amplifying it, transmitting it to signal control unit, amplifying it and connecting it to mobile telephone via signal interface. A signal processing control circuit compares the receiving and sending signals, so that the hand-free telephone can have the function of two-way simultaneous conversation communication, and the audio signal of any party can not be cut off during the conversation.

Description

The function circuit of hand-free phone and charging unit in the car

The function circuit of hand-free phone and charging unit in the relevant a kind of car of the utility model refers in particular to the charge circuit of aforementioned means, the design of receiving telephone circuit and originating circuit.

At present realize that at the Taiwan vehicular telephone result of privatization develops very fast, generally is used.But when it is used on the vehicle, one hand-held telephone bandset conversation, it is very inconvenient to drive on the other hand, and the anxiety that safety is arranged, so that have the structure of hand-free mobile phone handsets in the car to produce, announce No. 273362 as the Taiwan patent gazette, it is characterized in that the sound that mat one audio signal reception device transmits receiver, conduct to earphone through a voice conducting pipe, and have a branched pipe that the noise in the voice conducting pipe is got rid of, and the sound that earphone is spread out of is clear.But it gives orders or instructions still with mouth the mobile phone handsets microphone to be given orders or instructions, and its battery still needs with commercial power charged, and is very inconvenient.

At present traditional again hand-free phone transmitting-receiving words function when conversation all can only be done unidirectional dialogue, if the other side gives orders or instructions simultaneously, wherein can cut off message, and both sides all can't hear.

Main purpose of the present utility model is to solve aforementioned difficulties and function circuit that hand-free phone in a kind of car and charging unit are provided, it is made of charge circuit, receipts telephone circuit and originating circuit, be to utilize automobile power source to be the battery of mobile telephone charging automatically, receive words and give orders or instructions all to exempt to hand simultaneously.

Another main purpose of the present utility model provides the function circuit of interior hand-free phone of a kind of car and charging unit, and when it was that both sides receive and dispatch words simultaneously, the other side is still clear to be heard, constitutes the two-way simultaneous dialogue.

The utility model is achieved in that it is every working power that the integrated operation circuit is provided by power supply plug grafting automobile cigarette lighter socket, it is characterized in that: also include: a charge circuit, it is power supply with aforementioned conducting, mu balanced circuit through being linked in sequence and power supply control and treatment circuit are connected to that signal connects interface and charge function that vehicular telephone is provided again; One receives telephone circuit, be that the signal that vehicular telephone receives is connected interface via signal, being sent to signal selects control circuit to select signal, again via in the signal processing control circuit with originating circuit in the background noise suppress circuit and the automatic volume regulation circuit is selected the control circuit incoming signal through signal, carry out the signal comparison process simultaneously, signal after will handling again will be received and be exported by loudspeaker after the words signal amplifies through automatic volume regulation circuit and amplifying circuit; An and originating circuit, be after receiving the signal of giving orders or instructions by microphone, via the microphone amplifying circuit signal is amplified, and suppress circuit with the filtering of background noise via the background noise, the signal of will giving orders or instructions is again selected the signal of control circuit input and is received that signal is connected the signal that interface selects control circuit to import through signal in the telephone circuit through signal with the automatic volume regulation circuit in signal processing control circuit, carry out the signal comparison process simultaneously, give orders or instructions signal after automatic volume regulation circuit and amplifying circuit amplify after will handling again, connect interface via signal and connect vehicular telephone output; Therefore, the dialogue double talk, both sides can both clearly hear.

Other purposes of the present utility model, circuit and function with reference to the accompanying drawings and embodiment, are described in detail as follows:

Fig. 1 is the diagram of block of the utility model integrated operation circuit.

Fig. 2 is the charge circuit electrical schematic diagram among Fig. 1.

Fig. 3 is the receipts telephone circuit electrical schematic diagram among Fig. 1.

Fig. 4 is the originating circuit electrical schematic diagram among Fig. 1.

See also Fig. 1, function circuit of the present utility model shown in Figure 2, it is by charge circuit 1, receives telephone circuit 2 and originating circuit 3 is constituted, and every working power of function circuit is provided by power supply plug 4 grafting automobile cigarette lighter sockets.Wherein, charge circuit 1 is the power supply with 4 conductings of power supply plug, and through mu balanced circuit 5 and power supply control and treatment circuit 6, connecting interface 7 via signal again provides vehicular telephone 8 mobile phone charging functions.

See also Fig. 1 again, shown in Figure 3, receipts telephone circuit 2 of the present utility model, be that the signal that vehicular telephone 8 mobile phones receive is connected interface 7 via signal, being sent to signal selects control circuit 9 to select signal, the background noise inhibition circuit 17 that is input in signal processing control circuit 10 and the originating circuit 3 carries out the signal comparison process with automatic volume regulation circuit 18 simultaneously through the signal of signal selecting circuit 9 inputs, signal after will handling again is through automatic volume regulation circuit 11 and amplifying circuit 12, to receive the words signal and amplify the back by loudspeaker 13 outputs, these loudspeaker 13 are to be located in the power supply plug 4 rear end audio amplifiers 14.

See also Fig. 1 again, originating circuit of the present utility model 3 shown in Figure 4, be after receiving the signal of giving orders or instructions by microphone 15, via microphone amplifying circuit 16 signal is amplified, and suppress circuit 17 with the filtering of background noise via the background noise, signal will give orders or instructions again by signal processing control unit 10, in 9 with the incoming signal of automatic volume regulation circuit 18 and receive signal in the telephone circuit 2 and be connected interface 7 incoming signals and carry out the signal comparison process simultaneously, give orders or instructions signal after automatic volume regulation circuit 18 and amplifying circuit 19 amplifies after will handling again, connect interface 7 via signal and be connected to vehicular telephone 8 outputs.

Claims (1)

1. An operating circuit for a hands-free phone and charging device in a car, which provides various working power sources for the overall operating circuit by plugging the power supply plug into the car cigarette lighter socket, and is characterized in that it also includes: a charging circuit, which is Connect the above-mentioned turned-on power supply to the voltage stabilizing circuit and power processing control circuit connected in sequence, and then connect to the signal connection interface to provide the charging function of the mobile phone; a receiving circuit is to pass the signal received by the mobile phone through the signal connection interface , to send to the signal selection control circuit to select the signal, and then pass through the signal processing control circuit and the background noise suppression circuit in the speaking circuit and the automatic volume control circuit through the input signal of the signal selection control circuit, and simultaneously perform signal comparison processing, and then process the processed The signal is amplified by the automatic volume control circuit and the amplifying circuit, and then output by the speaker; and a speaking circuit, after the microphone receives the speaking signal, the signal is amplified by the microphone amplifying circuit, and the signal is amplified by the background noise suppression circuit. The background noise is filtered out, and then the calling signal is compared with the signal input by the automatic volume control circuit through the signal selection control circuit in the signal processing control circuit and the signal input by the signal connection interface in the receiving circuit through the signal selection control circuit at the same time. After the processed speech signal is amplified by the automatic volume control circuit and the amplifier circuit, it is connected to the mobile phone through the signal connection interface for output.

Images