CN2318769Y

CN2318769Y - Telephone idneitification controller

Info

Publication number: CN2318769Y
Application number: CN 97248802
Authority: CN
Inventors: 黄添耀; 徐春云
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-02
Filing date: 1997-12-02
Publication date: 1999-05-12
Anticipated expiration: 2007-12-02

Abstract

The utility model relates to a telephone identifying controller which comprises a transmitter and a receiver, wherein, the transmitter comprises an office line voltage detection and power supply switching circuit, a voltage-stabilizing and discharging circuit, a coding circuit, an oscillating circuit and a timing and sending control circuit, and the receiver comprises an office line voltage detection and power supply switching circuit, a voltage-stabilizing and discharging circuit, a carrier receiving circuit, a decoding circuit, an on-off state locking circuit and a complex frequency suppressing circuit. The transmitter arranged at the telephone sends a special code signal. The talking is granted after the receiver arranged at a telephone exchange decodes and carries out the confirmation. If the telephone does not send a correct signal, the talking can not be carried out, so the problem of telephone stealing is solved.

Description

The phone identification controller

The utility model relates to the device that a kind of telephone system prevents free call on somebody else's expense through illegal means, refers to a kind of phone identification controller that can prevent any free call on somebody else's expense through illegal means of unwarranted people especially.

At present, the popularity rate of phone is more and more higher, however the incident of usurping phone happen occasionally, for example a certain telephone subscriber is baffled to receive a huge telephone bill rumly, under further investigating, find it is the international dial-a-porn that suffers not clear personage's free call on sb. else's expense through illegal means, but but suffer from not having countermeasure.And telecommunications company cannot take out effective solution.The telephone subscriber does not know when can receive the telephone bill that allows the people suffer unexpected personal financial losses suddenly just like badly frightened person.

In addition, the illegal personage of few part utilizes the telephone set private of providing for oneself to connect the exchange line free call on somebody else's expense through illegal means of public telephone, causes the loss of telecommunications company.

In view of this, the purpose of this utility model is to provide a kind of phone identification controller, and it can prevent any personage without permission free call on somebody else's expense through illegal means, suffers a loss to avoid telephone subscriber and telecommunications company.

For this reason, the utility model is taked following technical scheme:

A kind of phone identification controller, comprise transmitter and receiver, wherein transmitter comprises exchange line detecting voltage and power switch circuit, voltage stabilizing and discharge circuit, coding circuit, oscillating circuit, timed sending control circuit, the output termination voltage stabilizing of described exchange line detecting voltage and power switch circuit and the input of discharge circuit, the latter exports the input of termination coding circuit, the input of the output termination oscillating circuit of coding circuit, the output of oscillating circuit and timed sending control circuit link; Described receiver comprises that exchange line detecting voltage and power switch circuit, voltage stabilizing and discharge phone, carrier wave receiving circuit, decoding circuit, on off operating mode lock-in circuit, multiple frequency suppress circuit, the output termination voltage stabilizing of described exchange line detecting voltage and power switch circuit and the input of discharge circuit, the input of voltage stabilizing and discharge circuit output termination decoding circuit, the output of decoding circuit is connected disconnected state lock-in circuit input, latter's output then connects with the multiple input that suppresses circuit frequently, and the carrier signal that described transmitter sends is received by receiver.

Above-mentioned purpose of the present utility model, can also realize by following technical measures:

Transmitter in the utility model comprises: by diode D ₁-D ₆And triode T ₁-T ₃The exchange line detecting voltage and the power switch circuit that are constituted, it is detecting phone exchange line L ₁And L ₂Polarity whether switch, and at phone exchange line L ₁And L ₂Polar switching the time start exchange line detecting voltage and power switch circuit; By integrated circuit (IC) ₁, triode T ₄And capacitor C ₄The voltage stabilizing and the discharge circuit that constitute, it is that the voltage that exchange line detecting voltage and power switch circuit are provided is given voltage stabilizing; By integrated circuit (IC) ₂The coding circuit that is constituted, it is to carry after conversation signal is encoded; By integrated circuit (IC) ₃The oscillating circuit that is constituted, it produces carrier signal, to carry aforementioned code signal; And the timed sending control circuit, it is that aforementioned carrier signal is periodically sent.

Receiver comprises: by diode D ₁-D ₆And triode T ₁-T ₃The exchange line detecting voltage and the power switch circuit that are constituted, it is detecting phone exchange line L ₁And L ₂Polarity whether change, and at phone exchange line L ₁And L ₂Polar switching the time start exchange line detecting voltage and power switch circuit; By integrated circuit (IC) ₁, triode T ₄And capacitor C ₄Voltage stabilizing that is constituted and discharge circuit are that the voltage that power supply exchange line detecting voltage and switching circuit are provided is carried out voltage stabilizing, by integrated circuit (IC) ₅The carrier wave receiving circuit that is constituted receives the carrier wave from transmitter; By integrated circuit (IC) ₆The decoding circuit that is constituted is decoded the received code signal from transmitter; By integrated circuit (IC) ₇The on off operating mode lock-in circuit that is constituted is to pass through or blocking-up according to decoded result decision signal; By triode T ₇, T ₈The multiple frequency that is constituted suppresses circuit, can suppress frequency multiplexed signal, the blocking-up conversation.

The utility model embodiment conjunction with figs. is described in detail as follows:

Fig. 1 is a frame assumption diagram of the present utility model;

Fig. 2 is the enforcement circuit diagram of the utility model transmitter;

Fig. 3 is the enforcement circuit diagram of the utility model receiver;

See also shown in Fig. 1-4, the transmitter (11) in the utility model phone identification controller (10), its exchange line detecting voltage and power switch circuit (12) comprise diode D ₁-D ₄, triode T ₁-T ₃, over-voltage protection element TNR and peripheral element, wherein T ₁Collector electrode meets T ₂Base stage, T ₂Collector electrode meets T ₃Base stage, T ₁Collector electrode also respectively with D ₁-D ₄Link T ₃Collector electrode then connects with discharge circuit (13) with described voltage stabilizing, and the TNR two ends respectively with D ₃, D ₅Link; Described voltage stabilizing and discharge circuit (13) comprise integrated regulator IC ₁, triode T ₄, capacitor C ₄, IC wherein ₁Input and described T ₃Collector electrode links, described IC ₁Output then connects with described coding circuit (14); This coding circuit (14) comprises the coding integrated circuit (IC) ₂And peripheral element, IC ₂The described IC of input termination ₁Output, IC ₂Output then link with described oscillating circuit (15); This oscillating circuit (15) comprises by four IC ₃1 flip-flop forming and peripheral element thereof; Described timed sending control circuit (16) comprises triode T ₅And peripheral element, wherein T ₅IC in base stage and the described oscillating circuit ₃Connect.

Exchange line detecting voltage in the described receiver (21) and power switch circuit (22) comprise diode D ₁-D ₄, triode T ₁-T ₃And peripheral element, wherein T ₁Collector electrode meets T ₂Base stage, T ₂Collector electrode meets T ₃Base stage, T ₁Collector electrode also respectively with D ₁-D ₄Link T ₃Collector electrode then connects with discharge circuit (23) with described voltage stabilizing; This voltage stabilizing and discharge circuit (23) comprise integrated regulator IC ₁, triode T ₄, capacitor C ₄, IC wherein ₁Input and described T ₃Collector electrode links, described IC ₁Output then connects with described carrier wave receiving circuit; Described carrier wave receiving circuit (24) comprises infrared ray receiving integrate circuit IC ₅And peripheral element; Described decoding circuit (25) comprises decoding integrated circuit IC ₆And peripheral element, wherein IC ₆Link with the on off operating mode lock-in circuit; Described on off operating mode lock-in circuit (26) comprises by 2 IC ₇Flip-flop and the peripheral element thereof formed; Described multiple frequency suppresses circuit (27) and comprises triode T ₇, T ₈And peripheral element, wherein T ₇Emitter meets T ₈Collector electrode, T ₈Base stage then with described IC ₇Connect.

Transmitter (11) is installed in telephone set, and receiver (21) is installed in telephone exchange.Thus, when surreptitiously being connected to the exchange line of public telephone or the exchange line of private user attempt free call on sb. else's expense through illegal means freephone with private power backup phone if any any illegal personage, the telephone set that is equipped with because of its private can't send to debate at all to be known sign indicating number and maybe can't send correct debating and know sign indicating number, therefore also just can't cost line and can not converse, thereby reach the purpose that prevents free call on somebody else's expense through illegal means with switch.

In the present embodiment, the model of each integrated circuit chip is as follows:

IC ₁：7150、IC ₅：HT-12E、IC ₃：CD-4103、IC ₅：μPC-2800、IC ₆：HT-12D、IC ₇：CD-4013；

Over-voltage protection element TNR can adopt the commercially available prod.

Phone identification controller provided by the utility model can prevent any unwarranted personage's free call on somebody else's expense through illegal means, suffers a loss to prevent telephone subscriber and telecommunications company.

Claims

1, a kind of phone identification controller, it is characterized in that, it comprises transmitter and receiver, wherein transmitter comprises exchange line detecting voltage and power switch circuit, voltage stabilizing and discharge circuit, coding circuit, oscillating circuit, timed sending control circuit, the output termination voltage stabilizing of described exchange line detecting voltage and power switch circuit and the input of discharge circuit, the latter exports the input of termination coding circuit, the input of the output termination oscillating circuit of coding circuit, the output of oscillating circuit and timed sending control circuit link;

Described receiver comprises that exchange line detecting voltage and power switch circuit, voltage stabilizing and discharge phone, carrier wave receiving circuit, decoding circuit, on off operating mode lock-in circuit, multiple frequency suppress circuit, the output termination voltage stabilizing of described exchange line detecting voltage and power switch circuit and the input of discharge circuit, the input of voltage stabilizing and discharge circuit output termination decoding circuit, the output of decoding circuit is connected disconnected state lock-in circuit input, latter's output then connects with the multiple input that suppresses circuit frequently, and the identification signal that described transmitter sends is received by receiver.

2, phone identification controller according to claim 1 is characterized in that, exchange line detecting voltage and power switch circuit in the described transmitter comprise diode D ₁-D ₄, triode T ₁-T ₃, over-voltage protection element TNR and peripheral element, wherein T ₁Collector electrode meets T ₂Base stage, T ₂Collector electrode meets T ₃Base stage, T ₁Collector electrode also respectively with D ₁-D ₄Link T ₃Collector electrode then connects with discharge circuit with described voltage stabilizing, and the TNR two ends respectively with D ₃, D ₅Link.

3, phone identification controller according to claim 2 is characterized in that, described voltage stabilizing and discharge circuit comprise integrated regulator IC ₁, triode T ₄, capacitor C ₄, IC wherein ₁Input and described T ₃Collector electrode links, described IC ₁Output then connects with described coding circuit.

4, phone identification controller according to claim 3 is characterized in that, described coding circuit comprises the coding integrated circuit (IC) ₂And peripheral element, IC ₂The described IC of input termination ₁Output, IC ₂Output then link with described oscillating circuit, described oscillating circuit comprises by four IC ₃1 flip-flop forming and peripheral element thereof.

5, phone identification controller according to claim 4 is characterized in that, described timed sending control circuit comprises triode T ₅And peripheral element, wherein T ₅IC in base stage and the described oscillating circuit ₃Connect.

6, phone identification controller according to claim 5 is characterized in that, exchange line detecting voltage and power switch circuit in the described receiver comprise diode D ₁-D ₄, triode T ₁-T ₃And peripheral element, wherein T ₁Collector electrode meets T ₂Base stage, T ₂Collector electrode meets T ₃Base stage, T ₁Collector electrode also respectively with D ₁-D ₄Link T ₃Collector electrode then connects with discharge circuit with described voltage stabilizing.

7, phone identification controller according to claim 6 is characterized in that, described voltage stabilizing and discharge circuit comprise integrated regulator IC ₁, triode T ₄, capacitor C ₄, IC wherein ₁Input and described T ₃Collector electrode links, described IC ₁Output then connects with described carrier wave receiving circuit; Described carrier wave receiving circuit comprises infrared ray receiving integrate circuit IC ₅And peripheral element.

8, phone identification controller according to claim 7 is characterized in that, described decoding circuit comprises decoding integrated circuit IC ₆And peripheral element, wherein IC ₆Link with the on off operating mode lock-in circuit; Described on off operating mode lock-in circuit comprises by 2 IC ₇Flip-flop and the peripheral element thereof formed.

9, phone identification controller according to claim 8 is characterized in that, described multiple frequency suppresses circuit and comprises triode T ₇, T ₈And peripheral element, wherein T ₇Emitter meets T ₈Collector electrode, T ₈Base stage then with described IC ₇Connect.

10, phone identification controller according to claim 9 is characterized in that, described transmitter is installed in the telephone set, and receiver is installed in the telephone exchange.