CN2049847U - Apparatus for displaying telephone number of calling subscriber - Google Patents

Abstract

The utility model relates to a display for displaying the telephone numbers of calling subscriber, which is applied to telephonic communication. The telephone numbers of the other party can be displayed respectively at current side, and the display can meet the need of important departments for finding out malicious telephone calls and carrying out unidirectional display. The display is used for encoding a bit oriented 8421 code through the known telephone numbers. After encoding, the signal is sent to the other party after modulated in a keying ASK modulation method with a synchronous signal. The other party receives the signal, and the synchronous signal is deducted after the signal is restored to a code element signal after modulated. After synchronization of the two parties is reached, the display displays the telephone numbers of the other party in bit oriented code translation. The utility model has the characteristics of simple installation, simple adjustment, high reliability, etc.

Description

Apparatus for displaying telephone number of calling subscriber

The utility model belongs to the display of display of calling telephone number.

Present stage, domestic employed advanced programme-controlled exchange function was traced malicious call, but only can show in telephone office, non-user compiles, switch commonly used does not now possess the function that transmits calling number, these characteristics of callee's display of calling number particularly, it needs the cooperation of both sides' signal aspect and corresponding interface equipment to realize this function.

The purpose of this utility model has been to set up the display of callee's display of calling telephone number.

The utility model reaches by following approach:

With the known telephone numbers numeral, to highest order, control by frame signal from lowest order, encoded respectively is 8421 2 system code elements, then, be transformed to serial code, and in addition after the synchronous code, carry out again by keying ASK modulation system behind modulated carrier by the phone hybrid coil mail to outside line from outside line receive by keying ASK modulated carrier signal, amplify, recover its code element after the demodulation, and the deduction synchronous code, after will believing that again sign indicating number is converted to parallel sign indicating number locking storage, steady display the other side's telephone number.

The utility model will be illustrated in conjunction with electrical schematic diagram:

1. calling and called identification circuit: be used for differentiating this unit and be calling party or callee and then determine it is to receive afterwards earlier to send out, or on the contrary, it is mainly by rectifier QZ ₁, with the door M ₁(CMOSC4081), NAND gate M ₁To M ₃(CO36), inverter F ₁, F ₂(CO33) resistance R ₁To R ₄R17, capacitor C ₁To C ₄, C ₁₁Form Deng element.

Send bell signal here when outside line, ringing-current is through resistance R ₁To R ₅, capacitor C ₁To C ₄And rectifier QZ ₁Behind the current rectifying and wave filtering circuit of forming, obtain a control voltage, thereby reach automatic conversion calling and called reiving/transmitting state, finish the reception and the transmission work of both sides' telephone number of certain program through inverter.

Its principle enumeration is as follows:

Select R18, R20, R22 and R19, R21, the different value of R23 resistance can be provided with initial condition, if be set to M in this display ₁₁M ₉M ₇Initial condition is " 0 ", and M ₁₂, M ₁₀, M ₈Be one state, the initial current potential of H point be " 1 " when guaranteeing start like this, and the condition of opening with door M6 is provided, and when the fourth point negative pulse jumpings occurred and spent the first time, owing to the derivative action and the automatic control of R, C in the circuit are guided, thereby can make M ₁₁With M ₁₂State changes, M ₁₁=" 1 ", M ₁₂=" 0 " G, H point current potential still maintain the original state, and when fourth point negative pulse occurred for the second time, making the M11M12 state turnover again was M ₁₁=" 0 ", M ₁₂=" 1 " produces 3 carry signals simultaneously, makes M ₉=" 1 ", M ₁₀=" 0 ", G point current potential is by " 0 " change " 1 ".When the 3rd negative pulse come, again the M12M11 state is changed into M ₁₁=" 1 ", M ₁₂=" 0 " but do not change M ₉=" 1 " M ₁₀The state of=" 0 ".When having only the 4th negative pulse, make M ₁₁=" 0 ", M ₁₂=" 1 ", M ₉=" 0 ", M ₁₀=" 1 ", second produces carry signal, owing to this carry signal changes M ₇, M ₈State make M ₇=" 1 " M ₈=" 0 ", H point current potential becomes " 0 " by " 1 " like this, and closes a time base and a door M ₆This means after four negative pulses appear in fourth point, i.e. calling and called both sides after all secondary has been carried out transmitting-receiving work, and stable demonstration the other side's telephone number, transmitting-receiving work can stop, only display shows the other side's telephone number separately.

Corresponding input pin for example links (removing out first frame signal) respectively with frame signal: lowest order digit is 3 in the number, so the D of second frame signal ₁Diode should be connected on IC ₁" 13 " pin of input pin.Under the effect of each frame signal, known telephone numbers is converted into successively from lowest order to highest order like this and 8421 yards symbol signals of line output.This circuit is by D ₁To D ₇Diode, terminal box and integrated circuit (IC) ₁Form.

2.-8. rate signals is controlled the corresponding IC of this frame signal successively behind the sequential circuit working ₁Input pin makes " 9 " " 7 " " 6 " " 14 " pin of IC, and line output 8421 symbol signals, and when no frame signal or frame signal be 0, when each input pin is " 0 ", its IC ₁Output pin also is " 0 " sign indicating number entirely.Control by frame signal with known telephone number numerical value successively be converted to 8421 yards code elements outputs from lowest order digit, to the highest order number, all conversion finishes to once sending the hand over word primitive encoding.

4. P-S parallel-serial conversion circuit: be with encoder IC ₁8421 yards symbol signals of 4 parallel-by-bits of being exported are being clapped signal Extremely One of effect next bit be converted to the serial code of being convenient to transmit.This circuit is by IC ₂Integrated circuit (four groups of CMOS, C ₅₄₄Bidirectional switch) forms.

5. signal is synthetic: with synchronizing signal in addition telephone number symbol signal forefront form a complete sequence code, this circuit is an integrated circuit (IC) ₃(CMOS4 organizes 2 inputs or door C4071) and NAND gate M ₅(CMOS4 organizes 2 inputs and door C4081) formed.IC ₃Be 4 group of 2 input OR circuit; First image duration by IC ₃2 pin are imported the first frame frame signal IC ₃Output is converted to synchronous code, and other image duration is by IC ₃" 1 " pin input serial signal element is through NAND gate M ₅The signal code of a complete sequence of output.

6. modulator: by the ASK mode signal element is modulated on the f=3.2KC sinusoidal signal carrier frequency, is beneficial to transmission on the line; This circuit is by integrated circuit (IC) ₄, capacitor C ₅, C ₁₃Resistance R ₈, R ₂₇Form IC ₄Be CMOS4 bidirectional switch C554 and IC ₂₃Shared one, bidirectional switch when current potential is " 1 ", is unlatching when control end (E end), during opposite E=0 and close IC in circuit ₄8 pin often are connected to the f=3.2KC sinusoidal signal, when the E end is added with the modulation signal code element, are loaded with signal element information on the ASK letter sign indicating number of its output, from IC ₄The output of " 9 " pin is by capacitor C ₁₃Coupling, main unit transmitter transformer coil place is sent to outside line, like this synchronizing signal and telephone number is sent to the other side together.

7. sine-wave oscillator is used for producing the f=3.2KC sinusoidal signal, is divided into two tunnel outputs, and one tunnel time-base signal source as sequence circuit, another road are as the CF signal of ASK modulation system, and circuit is by crystal wafer X, triode BG ₂To BG ₄, resistance R ₉To R ₁₄, capacitor C ₆To C ₁₀, C ₁₂Deng phase shift positive feedback of composition, sine-wave oscillator adopts stable crystal wafer, and it is synchronous that the sinusoidal signal of vibration generation frequency stabilization is convenient to both sides.

8. amplification frequency selection circuit: the signal that will be received amplifies the back with shunt-resonant circuit and series resonant tank taking-up signal carrier, rectifying and wave-filtering, restoring signal code element after the shaping.Circuit is by transistor BG ₇, rectifier QZ ₂, reshaper IC ₂₅(six groups of Schmidt trigger C40106 of CMOS), receipts control switch I C ₂₃(CMOS is C544), resistance R ₂₉, R ₃₅To R ₄₀, capacitor C ₁₅To C ₂₁Form Deng element.From the secondary received signal of sending here of unit hybrid coil by capacitor C ₂₁Coupling is again by BG ₇Voltage amplification is because at BG ₇Collector load is an inductance L ₁, capacitor C ₁₈Form a shunt-resonant circuit and by inductance L ₂, capacitor C ₁₉Form a series resonant tank, through capacitor C ₁₆C ₁₇In inductance L ₁Two ends take out the signal carrier frequency then by QZ ₂To its signal carrier frequency rectifying and wave-filtering, deliver to IC ₂₅Shaping recovers the signal element identical with transmitting terminal fully, at last by receiving control switch I C ₂₃Control output is sent to synchronous identifier string respectively and is gone in the translation circuit in the lump.

9. synchronous identification circuit: this circuit is to reach to detect in the collection of letters code element sync bit signal controlling and receive the state base of following time and a door M ₆Unlatching, obtain the frame that aligns on the time with transmitting terminal and clap signal.And utilize counter to count and change voluntarily for reiving/transmitting state.Circuit is by integrated circuit (IC) ₂₄(CMOS, 7 grade of 2 system frequency divider C4024) and door M ₂₅(CMOS C4081), not gate M ₂₆To M ₂₇, M ₇To M ₁₂(CMOS4 organizes 2 input NAND gate C036) and resistance R ₁₈To R ₂₄Form.Be input to and a door M by the signal element that recovers in collecting mail number ₂₅Input as control signal, and is added with f=3.2KC square wave time-base signal, M on another input ₂₅Export IC to ₂₄Come synch bit in the judgment signal sign indicating number in the frequency-dividing counter, only be T=2.4ms, utilize IC because the synchronizing signal pulsewidth is T=9.6ms and telephone number signal code element pulsewidth ₂₄Differentiate pulsewidth taking-up synchronizing signal, IC ₂₄Be 7 grades of 2 frequency dividers, the synchronous code pulsewidth can make IC in design ₂₄Counter, in its 4 pin output signal, and signal code can not.Be easier to take out synchronizing signal like this.This is because in integrated circuit (IC) ₂₄In 2 pin clear " 0 " end, the anti-phase signal element that is added with, like this signal element can not the full situation of meter under, and " 0 " clearly constantly

M ₇To M ₁₂Form three grades of binary counters and count for frame signal, (the J point is the input of counter to get negative saltus step after the 8th frame frame signal finishes in the circuit.M ₇And M ₈, M ₉And M ₁₀, M ₁₁And M ₁₂Form three flip-flop circuits respectively, and be connected in series, select R ₁₈, R ₂₀, R ₂₂With R ₁₉, R ₂₁, R ₂₃The different value of resistance can be provided with initial condition, if be set to M in this display ₁₁M ₉M ₇Initial condition is " 0 ", and M ₁₂, M ₁₀, M ₈Be one state, the initial current potential of H point is " 1 " when guaranteeing start like this, provides to open and door M ₆Condition, when the fourth point negative pulse jumping occurred and spent the first time,, thereby can make M because the derivative action of R, C is guided with automatic control in the circuit ₁₁With M ₁₂State changes, M ₁₁=" 1 ", M ₁₂=" 0 " G, H point current potential still maintain the original state, and when fourth point negative pulse occurs for the second time, make M again ₁₁M ₁₂State turnover is M ₁₁=" 0 ", M ₁₂=" 1 " produces 3 carry signals simultaneously, makes M ₉=" 1 ", M ₁₀=" 0 ", G point current potential is by " 0 " change " 1 ".When the 3rd negative pulse come, again with M ₁₂M ₁₁State is changed into M ₁₁=" 1 ", M ₁₂=" 0 " but do not change M ₉=" 1 " M ₁₀The state of=" 0 ".When having only the 4th negative pulse, make M ₁₁=" 0 ", M ₁₂=" 1 ", M ₉=" 0 ", M ₁₀=" 1 " second produces carry signal, owing to this carry signal changes M ₇, M ₈State make M ₇=" 1 ", M ₈=" 0 ", H point current potential becomes " 0 " by " 1 " and closes a time base and a door M like this ₆This means after four negative pulses appear in fourth point, i.e. calling and called both sides after all secondary has been carried out transmitting-receiving work, and stable demonstration the other side's telephone number, transmitting-receiving work can stop, only display shows the other side's telephone number separately.

10. go here and there conversion in the lump: effect be with paid-in signal element by the serial state, clapping under the signal effect, be converted to 4 parallel-by-bit code elements, by integrated circuit (IC) ₂₂Form.(CMOS bidirectional switch C544)

11. decoding shows: 7 of this circuit show the other side's telephone number, are by integrated circuit (IC) ₈To IC ₂₁And 7 charactrons compositions, wherein IC ₁₅To IC ₂₁Be CMOS4D latch, C ₄₂₁, receive by IC at input ₂₂After 8421 yards of 4 parallel-by-bits that are transformed to,, under the frame number effect, transmit the letter sign indicating number successively, during frame signal disappears, there is output in combination padlock, blocked input letter sign indicating number to output by control end CP " 5 " pin.IC ₈To IC ₁₄Be CMOS8 segment decoder C305,, decipher, and on charactron, show with 10 system numbers for 8421 yards of the telephone numbers that latchs this.

1.2. power supply: by rectifier, triode BG ₁, BG ₅, BG ₆And resistance R ₅To R ₇, R ₃₁To R ₃₃Deng composition, triode BG ₁Be to utilize the variation of calling and called off-hook outside line+60V to control Vdd ₂The unlatching of supply voltage makes the work of this display, because BG when static ₁Reliable conducting, thus I point current potential is " 0 ", in case BG behind the off-hook ₁Pipe is converted to by conducting and ends, thereby makes I point current potential become " 1 " high level by " 0 ", like this through IC ₃OR circuit " 10 " pin is output as " 1 " high level, makes BG ₆Conducting, BG like this ₅, b, e two voltage across poles negative senses change BG ₅Conducting Vdd ₂Add each element circuit of this display.

Only four lines that connect of the utility model and telephone, two outside lines and telephone set outside line are in parallel, and a code distribuing wire connects transmitter and hybrid coil connection place, and a code receiving wire connects receiver and hybrid coil connection place.

Fig. 1 is power supply reason figure of the present utility model.

Fig. 2 is a block diagram of the present utility model.

The course of work of the present utility model is:

Caller is put through called back to the called ringing-current that send, through QZ ₁Rectification makes callee's A point current potential become " 0 " by " 1 ", and the B point becomes BG behind " 1 " called off-hook ₁By the I point is " 1 ", through IC ₃Open Vdd ₂, the E point is " 1 ", IC ₃4 pin output " 1 ", make M ₆Open, time-base signal frequency division phase-splitting output, frame signal is passed through the jumper connection of terminal box through IC ₁My phone numbers is encoded to 4 parallel-by-bits is clapping signal for 8421 yards Extremely

Control under it become serial code send IC ₃1 pin and the frame signal of 2 pin inputs synthetic.Because the B point is " 1 ", M ₅Open, the signal after synthesizing is through M ₅Give IC ₄6 pin, with its carrier wave at IC ₄On the sine wave signal of the 3.27KHZ of 8 pin input, through IC ₄The output of 9 pin.During the 2nd to the 8th frame frame signal, successively (at most) seven item sign indicating numbers of called subscriber are delivered to the calling party.Because the calling party does not have the ringing-current input, the A point is " 1 ", and the B point is " 0 ", M ₅Turn-offed transmitting branch, and the calling party to be I point current potential in its circuit of off-hook be " 1 ", display power supply Vdd ₂Open M ₆Also open, time base divides frame phase-splitting output, the telephone number position BG that is sent by the callee ₇After the amplification frequency selection circuit amplification frequency-selecting of forming, through IC ₂₅Shaping is through IC ₂₂Serial code is converted to parallel sign indicating number, shows called subscriber's telephone number again through the decoding display circuit.After aforesaid whole process finishes (i.e. the intact back of the 8th frame signal), the J point produces three grades of binary counter countings of negative saltus step calling and called both sides, calling and called repeated the once number of transmitting-receiving process when frame signal was come for the second time, when secondary the 8th frame frame signal finishes, it is " 2 " that same fourth point produces a negative saltus step rolling counters forward, G point current potential becomes " 0 " by " 1 ", and calling party B point is by " 0 " change " 1 ", and callee B point is overturn by " 1 " change " 0 " calling and called reiving/transmitting state.Calledly collect the digits, the caller number of sending out, process is the same, and after frame signal finished for the third time, counter was 3, and calling and called repeat once to send out the receipts process, and after the 4th time frame signal finished, rolling counters forward was 4, H point current potential is closed M by " 1 " change " 0 " ₆, time-base circuit quits work, and a transmitting-receiving and a receipts process are all over, and only show the other side's telephone number, and after the on-hook, I point current potential is closed Vdd by " 1 " change " 0 " ₂Display quits work.

The main advantage of the utility model: 1. this device has improved switch and traffic circuit utilization rate and reduces and take wire time, also can reduce the generation of malicious call simultaneously, for relaxing the telephone communication tense situation. Greatly useful. 2. this display can be installed on the various units and use, and also display and telephone set dress can be integrated, and forms a novel telephone. Also can consider existing user, display is arranged separately in by the unit, with existing unit fit applications. 3. this device is installed, is debugged conveniently, the characteristics such as reliability height. 4. this display can be used with various standard switches does not need switch to participate in or the process transformation Each leisure of both sides is picked up and is shown automatically in the mobile phone 1 second that the other side's telephone number does not affect conversation. (at this moment this display has withdrawed from communication line).

Claims (2)

1, a kind of display of calling telephone number display, it mainly is to be discerned by calling and called, sequence circuit, encoder, string in the lump, and a string conversion, synthetic, modulation circuit, amplify frequency-selective circuit and discern the loop synchronously, the decoding demonstration waits circuit to form, its characteristics are that this installs first frame signal control, the encoded respectively device of known telephone numbers is encoded to 8421 2 system code elements, then, be transformed to serial code, and in addition after the synchronous code, again behind modulated carrier, mail to outside line by the phone hybrid coil, modulated carrier signal from outside line receives amplifies, after the demodulation, recover its code element, and deduction synchronous code, after will believing that again sign indicating number is converted to parallel sign indicating number locking storage, steady display the other side's telephone number

1. the calling and called identifier is to utilize rectifier QZ ₁, NAND gate M _1-3And resistance R _1-4, capacitor C _1-4, C ₁₁Form;

2. sequence circuit: by integrated circuit (IC) _5-7With with door, not gate M ₆, M _13-24Form, the 8 frame rate signals and the frequency that mainly will produce frequency and be f=6.5HZ are that 4 of f=52HZ pats the frequency signal, and encoder is provided;

3. encoder: by diode D _1-7, integrated circuit (IC) ₁Form, it is the outputs of 8421,2 system code element signal parallels that known telephone number step-by-step is compiled by frame signal control;

4. the string in the lump, the P-S parallel-serial conversion circuit: respectively by integrated circuit (IC) ₂₂With IC ₂(bidirectional switch C ₅₄₄) form;

5. combiner circuit: by integrated circuit (IC) ₃OR circuit is formed, and is the 1st frame synchronizing signal is arranged in the most first adding signal code preface example, from the synthetic successively output of second frame;

6. modulation circuit: by integrated circuit (IC) ₄(bidirectional switch C ₅₄₄) and capacitor C ₁₃, resistance R ₈, R ₂₇Form, just reach modulation by signal code preface example control f=3.2KC sinewave output, and signal element preface example is modulated on the sinusoidal carrier frequency of f=3.2KC, be sent to the other side;

7. the reiving/transmitting state of conversion voluntarily of synchronous identification circuit utilizes gate circuit M _7-123 grades of binary counter compositions, to the frame signal counting, when counter counts 2, upset calling and called state recognition bistable M _2-3Form, reach the change transmitting/receiving program;

8. decoding shows: be by integrated circuit (IC) _8-21And 7 charactrons compositions, wherein IC _15-21Be the 4D latch, it is to be subjected to CP clock end and polar end P end and to control that its input signal is transferred to output.

2, display according to claim 1 is characterized in that this device can be directly installed in the telephone, also display can be arranged separately in by the unit, is used with unit.

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