CN2157636Y

CN2157636Y - Loudspeaker controller for hand telephone

Info

Publication number: CN2157636Y
Application number: CN 93208168
Authority: CN
Inventors: 欧昌荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-13
Filing date: 1993-04-13
Publication date: 1994-02-23
Anticipated expiration: 2003-04-13

Abstract

The utility model provides a loudspeaker controller for a hand telephone, which is composed of a speech transmitting circuit, a speech listening circuit and a touch comb. The utility model is characterized in that the speech transmitting circuit is composed of a picking circuit, an audio signal amplifying circuit and a bleeder circuit. The speech listening circuit also uses an amplifying circuit by which an audio signal of an automatic telephone is transmitted to a listener after being amplified by an amplifier. Thus, the hand telephone has the functions of speakerphone, key pressing elimination, automatic answer for incoming, and automatic disconnection after a call is finished. Meanwhile, the utility model also has the advantages of simple structure and convenient installation. The utility model can be arranged and used without the need of changing any structure of the original hand telephone. The utility model is characterized in high faxing degree, low cost, etc.

Description

Loudspeaker controller for hand telephone

The utility model relates to personal handyphone, particularly a kind of hands-free control device that is used for personal handyphone.

The former facility of existing mobile phone have many-sided function, and are not fully utilized as yet so far at home, comprising the auto-pickup function.Owing to there is not servicing unit that these original functions are used fully, and make some users feel very inconvenience, especially some are driven a car or the personage of motorcycle more like this.Therefore wish to make full use of these functions, design a kind of calling auto-pickup, the hands-free control device of words Bi Zidong broken string.

The purpose of this utility model is at the problems referred to above, and proposes a kind ofly on former personal handyphone basis, and equipped hands-free control device can make this personal handyphone realize the calling auto-pickup, the hands-free control device of words Bi Zidong broken string.

Technical solution of the present utility model is: the hands-free control device of mobile phone: being combed one's hair by telecommunication circuit, tin telephone circuit and contact constitutes.Comprise pickup circuit, amplifying circuit, bleeder circuit, personal handyphone contact etc. in the wherein said telecommunication circuit.Comprise personal handyphone contact, amplifying circuit, electric-shocking circuit, loud speaker etc. in the described tin of telephone circuit.Its solution is: the pickup circuit of telecommunication circuit comprises microphone M, resistance R 1, capacitor C 2, resistance R 2.An end earth terminal of microphone wherein, other end series resistor R1, R2, the other end of R2 inserts amplifier 7A2822(1 respectively) and power input, capacitor C 2 one ends are connected the common port of R1 and R2, other end earth terminal.The pickup circuit of being made up of jointly said elements inserts amplifier 7A2822(1 through capacitor C 1, resistance R 3) the input anode, and also connect a bleeder circuit of being made up of divider resistance R4, R5 and capacitor C 4 at the output of amplifier through capacitor C 3, and bleeder circuit is on the end points 3 that capacitor C 4 access personal handyphone contacts are combed one's hair.

Amplifying circuit in described tin of telephone circuit is by amplifier 7A2822(2) and be connected the resistance R 6 of its input anode and be attempted by the resistance R 7 of its input and output side and be connected on capacitor C 6 formations between amplifier input negative terminal and the ground end.Output at amplifier also is connected to the electric-shocking circuit of being made up of resistance R 8, capacitor C 8, rectifier diode D through capacitor C 7, resistance R 8 and the capacitor C 8 back one termination loud speaker Y that is connected in parallel wherein, the other end inserts the contact of personal handyphone inner arc through rectifier diode D and combs one's hair on 6.Wherein the input signal of amplifying circuit combs one's hair 4 from the contact of personal handyphone.

The utility model has the advantages that: hands-free, exempt from button, auto-pickup calling, words Bi Zidong broken string.This hands-free control device can be selected the loud speaker and the microphone of all size according to different needs simultaneously.Thereby avoided under noisy situation, can't hear the trouble that telephone receiving signal or parking are answered.No matter the user uses the mobile phone that has hands-free controlled function in any public place (as meeting-place, office etc.) simultaneously, will avoid the interference of mobile phone toot sound to other people effectively.The utility model also has simple in structure, easy for installation, need not change original call machine any structure and just can install and use.Also has the fidelity factor height simultaneously, characteristics such as cost is low.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is telecommunication circuit figure of the present utility model;

Fig. 2 is an obedient circuit diagram of the present utility model.

As shown in Figure 1: the operation principle of telecommunication circuit is: when the operator after microphone spreads out of audio signal, after resistance R 1 pressurization, amplify the audio frequency multiple, by filter capacitor C2 with audio signal filtering, again through the divider resistance dividing potential drop, transfer playback multiple frequently, make audio signal be input to amplifier 7A2822(1 through capacitance C1) carry out after height fax amplifies, insert bleeder circuit by its output through capacitor C 3, and then the height that will amplify fax audio signal is input on the end points 3 that the mobile phone contact combs one's hair, and just finished the words work of sending.

As shown in Figure 2: listen the operation principle of telephone circuit to be: the audio signal that spreads out of from the other side's personal handyphone through amplifier 7A2822(2) amplified after, the electric-shocking circuit of forming via resistance R 8, capacitor C 8, diode D inputs to loud speaker respectively with the audio signal after amplifying and contacts with personal handyphone on the end points 6 of combing one's hair again.Even if thereby make the person of receiving calls count Mi Yuan from telephone set, also can more clearly answer speech by loud speaker, its fidelity factor former especially personal handyphone is can't be obtained.

The function that contact described in the utility model is combed one's hair, it is exactly each circuit contact hands-free control device, orientation is drawn on the contact of receiving personal handyphone, makes the function of portable telephone set respective contacts obtain conversion, and has also made full use of the function that former personal handyphone itself just has.

Claims

1, the hands-free control device of a kind of mobile phone, by telecommunication circuit, listen telephone circuit and contact to comb one's hair to constitute, it is characterized in that: described telecommunication circuit is combed one's hair and is formed by pickup circuit, amplifying circuit, bleeder circuit, personal handyphone contact, described tin of telephone circuit by personal handyphone contact comb one's hair, amplifying circuit, electric-shocking circuit, loud speaker constitute.

2, the hands-free control device of mobile phone according to claim 1, it is characterized in that: the pickup circuit of described telecommunication circuit comprises microphone M, resistance R 1, capacitor C 2, resistance R 2, an end earth terminal of microphone wherein, other end series resistor R1, R2, the other end of R2 inserts amplifier 7A2822(1 respectively) and power input, capacitor C 2 one ends are connected the common port of R1 and R2, other end ground connection, the pickup circuit that is made of said elements is through capacitor C 1, resistance R 3 access amplifier 7A2822(1) input anode, and also be connected to one by divider resistance R4 through capacitor C 3 at the output of amplifier, the bleeder circuit that R5 and capacitor C 4 are formed, bleeder circuit inserts the personal handyphone contact through capacitor C 4 and combs one's hair 3.

3, mobile phone control device according to claim 1, it is characterized in that: the amplifying circuit in described tin of telephone circuit is by amplifier 7A2822(2) and be connected resistance R 6 of its input anode and be attempted by the resistance R 7 of its input and output side, and the capacitor C 6 that is connected between amplifier input negative terminal and the ground end constitutes, the output of amplifier also is connected to by resistance R 8 through capacitor C 7, capacitor C 8, the electric-shocking circuit that rectifier diode D forms, a termination loud speaker Y after wherein resistance R 8 is connected in parallel with capacitor C 8, the other end combs one's hair 6 through the contact that rectifier diode D inserts personal handyphone inside, and wherein the input signal of amplifying circuit combs one's hair 4 from the contact of personal handyphone.