CN2247395Y - Telephone dial device capable of simultaneous limiting illegal long-distance call and sound communication service - Google Patents

Abstract

The utility model relates to a telephone dial device capable of simultaneously limiting illegal long-distance calls and sound communication services, which is formed by adding an effective dialing and order identification thereof and state keeper, a redial storing arrester, and a lock switch to a common telephone dial device. The utility model is characterized in that the lock switch is artificially controlled to switch on or off to reach the aims that long-distance calls and sound communication services (i.e., 168 and 160 sound communication broadcasting stations) can be made or only short-distance calls can be made except sound communication services. Moreover, the utility model has the advantages that the device has no effect on the impedance matching of the telephonic communication network; ordinary telephones can be conveniently refitted. The utility model provides a simple and reliable and practical telephone dial device capable of limiting long-distance calls and sound communication services.

Description

Can limit the telephone set dialing mechanism that fornication is long-distance and audio communication is served simultaneously

The utility model relates to a kind of can the restriction simultaneously and fornicates telephone set dialing mechanism long-distance and the audio communication service.

At present, many telephone users can both directly be dialled domestic, international long-distance and phone audio communication information desk (i.e. 168 and 160 information service centers).Because domestic, the international long-distance telephone expense is higher, the audio communication service is paid, expense is also higher.Therefore prevent from not obtain the master and go into to agree that fornication is long-distance and the audio communication service is urgent day by day with the requirement that reduces unnecessary phone expenses.At present domestic still do not have a telephone set dialing mechanism that can limit the long-distance and audio communication service of fornication simultaneously easy and simple to handle.

The purpose of this utility model is to provide a kind of can limiting simultaneously of fornication toll telephone and audio communication service of effectively controlling easy and simple to handle to fornicate telephone set dialing mechanism long-distance and the audio communication service, thereby guarantee that telephone charges only is used for necessary contact, reduces expenses.

The purpose of this utility model is achieved in that common telephone set dialing mechanism is made up of telephone keyboard, integrated dialer, dial impulse output driver, electronic switch.The utility model is at the keyboard of common telephone set dialing mechanism, integrated dialer and connects effective dialing and order discriminating and the state retainer that power supply is provided by pressurizer.This effectively dials and the order discriminating is connected with integrated dialer by redialing the storage, clearing device with the output of state retainer, and this effectively dials and order is differentiated and an input of state retainer passes through tapered end switch ground connection, the tapered end switch is when make position, and effectively dialing and order thereof are differentiated to be connected with the function of integrated dialer with the state retainer and be in off-state.At this moment, this can limit the telephone set dialing mechanism of the long-distance and audio communication of fornication service simultaneously and the function of common telephone dialing device is as good as, and can arbitrarily dial directly domestic, international long-distance or audio communication information desk; The tapered end switch is when open position, and effectively dialing and order thereof are differentiated to be connected with the function of integrated dialer with the state retainer and be in on-state.Just only allow to dial the short distance phone of non-audio communication service, do not allow to dial audio communication service and toll telephone.At this moment, if play that first group of " 0 " key (the first number average of domestic, international long-distance telephone be " 0 ") behind the machine effectively dial and in proper order the output of discriminating and state retainer with the oscillating crystal one end ground connection of integrated dialer, integrated dialer can not be worked, and it is inoperative to dial.This state will remain to and play machine next time.If rise behind the machine first group be not " 0 ", " 1 " key, then effectively dialing and order thereof differentiate and the output of state retainer earth-free, integrated dialer can operate as normal can normally carry out to guarantee the short distance phone that non-audio communication is served up to play machine next time.If rise behind the machine first group be " 1 " key, then effectively dialing and order thereof are differentiated and the state retainer prepares to differentiate that dialing next time is " 6 ", if what dial is not " 6 " next time, the output of then effective dialing and order discriminating and state retainer is earth-free, and integrated dialer can operate as normal can normally carry out with the short distance phone of assurance with the non-audio communication service headed by " 1 " up to play machine next time.If what dial is " 6 " next time, then effectively dialing and order thereof are differentiated and the state retainer prepares to differentiate that dialing for the third time is " 8 " or " 0 ", if what dial for the third time is " 8 " or " 0 ", the output of then effective dialing and order discriminating and state retainer is with the oscillating crystal one end ground connection of integrated dialer, integrated dialer can not be worked, and it is inoperative to dial.This state will remain to and play machine next time.If dialing is not " 8 " or " 0 " for the third time, the output of then effective dialing and order discriminating and state retainer is earth-free, and integrated dialer can operate as normal can normally carry out with the short distance phone of assurance with the non-audio communication service headed by " 16 " up to play machine next time.This effectively dials and order differentiates that also redialing the storage, clearing device by one with the state retainer is connected with integrated dialer, first group if " 1 ", " 16 ", " 168 ", " 160 " back on-hook, then these " effectively dialing " are the redialing content in the memory and will be redialed the moment of storage, clearing device after on-hook and dispose of integrated dialer, to stop utilizing redial key to dial the possibility of audio communication service.

Effectively dialing and order discriminating thereof and state retainer are made up of trigger, decoder, dialing identification circuit, gate circuit or switching circuit, triggering signal control gate or differential circuit and integrating circuit, triode, diode, resistance, electric capacity, and dialing identification circuit wherein is made up of gate circuit or diode.This effectively can be dialled in case of necessity and order is differentiated and the state retainer is integrated into one chip.

Redialing the storage, clearing device is made up of triode, diode, resistance, electric capacity.

The utlity model has following advantage: ordinary telephone set is reequiped easy, and impedance matching does not have influence to telephone communication network, easy and simple to handle reliable, the short distance phone of long-distance, audio communication Service Phone and non-audio communication service only needs a tapered end switch transition get final product, and calling has no effect to incoming call.

Following embodiment and the accompanying drawing of former reason of the present utility model provides.

Accompanying drawing 1 is the embodiment block diagram that can limit the telephone set dialing mechanism of fornicating long-distance and audio communication service simultaneously that provides according to the utility model.

Accompanying drawing 2 is for limiting embodiment one circuit diagram of the telephone set dialing mechanism of fornicating long-distance and audio communication service simultaneously.

Accompanying drawing 3 is for limiting embodiment two circuit diagrams of the telephone set dialing mechanism of fornicating long-distance and audio communication service simultaneously.

Below in conjunction with embodiment accompanying drawing is illustrated.

Embodiment one: pressurizer (21) is made up of resistance R 1, capacitor C 1 and diode D1, the effect of diode D1 is to guarantee that the voltage on the capacitor C 1 can not be to line discharge to guarantee effective dialing and to differentiate in proper order and state retainer (22) reliable operation that exit 1 is that voltage stabilizing output conduct is effectively dialled and order is differentiated and the power supply of state retainer (22) when the instantaneous reduction of line voltage distribution.Effectively dialing and order discriminating thereof and state retainer (22) are by trigger FF1, FF2, FF3, the decoder that two inputs and door G0, a G1, G2, G3 constitute, the dialing identification circuit that two inputs and door G16, a G17, G18, G19 constitute, gate circuit G5, G6, G7, G8, G9, G10, G11, G12, G13, G14, G15, triggering signal control gate G4, fet T1, resistance R 2, capacitor C 2 is formed.Redial storage, clearing device (27) by fet T2, T3, diode D2, D3, resistance R 5, R6, capacitor C 3 are formed.Telephone keyboard (23)-KB.Integrated dialer (24) is made up of integrated dialing trigger DIL and oscillating crystal Cr.Dial impulse output driver (25) is made up of transistor V2 and resistance R 4.Electronic switch (26) is made up of transistor V1 and resistance R 3.HS is a switch hook, and this contact disconnected when telephone receiver hung up, and this closing of contact when telephone receiver is mentioned is provided the required power supply of telephone set and prepared dialing or conversation by telephone network.Whether the tapered end switch SW needs to block selector switch long-distance and audio communication service dialing.Line 4 ends lead to the telephone set communicator.The contact sets 2 of line 3 termination telephone hook switch.

The method of blocking dialing is that the one end ground connection of the oscillating crystal Cr in the integrated dialer (24) is made it failure of oscillation, is connected with oscillating crystal Cr with a fet T1 for this reason.When the output y2 of trigger FF2 is a high level, and the y3 of FF3 is when being output as high level, and with the output S2 high level of door G0, triode T1 conducting, with the end ground connection of oscillating crystal Cr, integrated dialer can not be worked, and dialing can't be carried out.Otherwise if y2 and y3 are not above-mentioned states, then triode T1 ends, and oscillating crystal Cr is not grounded, and vibration continues, and integrated dialer operate as normal can dial.

The method that removing redials memory content is the moment after on-hook to keep power supply by the storage that redials the integrated dialer of storage, clearing device short circuit.

After pushing switch hook HS, trigger FF1, FF2, FF3 reset, and effectively dialing and order discriminating thereof and state retainer will carry out work according to user's dialing procedure.The effect of trigger FF1 is that effectively dialing is differentiated and state keeps, the effect of trigger FF2, FF3 is that the order of effectively dialing is differentiated and state keeps, two inputs are the state decoders of trigger FF2, FF3 with door G0, G1, G2, G3, when output (y2 y3)=(the L L) of FF2, FF3, (annotate: L represents low level, and H represents high level, and this formula represents that y2 is a low level, y3 is a low level) the output S0=H of G1.(y2y3)=(LH) time, with the output S1=H of door G2.(y2y3)=(HH) time, with the output S3=H of door G3.(y2y3)=(HL) time, with the output S2=H of door G0.Wherein: S2=H forbids dialing status, under this state, and fet T1 conducting, with the end ground connection of oscillating crystal Cr, integrated dialer can not be worked, and dialing can't be carried out.Its excess-three state: S0, the order that S1, S3 are used for effectively dialling is differentiated.Two inputs are that " 0 ", " 1 ", " 6 ", signal X0, the X1 of " 8 " key, the dialing identification circuit of X6, X8 are dialled in identification with door G16, G17, G18, G19.Its principle is for the integrated dialer of determining to press key with scan mode, and when next key, the line by this key is identical with the level of alignment, in scanning process, this line and alignment are high level simultaneously, and corresponding two inputs also are high level with door output, thereby can discern what key press.Three trigger FF1, FF2, data input pin D1, the D2 of FF3, the states that the state of D3 is exported S0, S1, S3 by X0, X1, X6, X8 and decoder determine.Before not pushing any key, X0, X1, X6, X8 are low levels, and two inputs also all are low levels with door G11, G12, G13, G14, output X00, the X16 of G15, X01, X38, X30, so the output D1 of four input NOR gate G5 is a high level.The state of D2 then is decided by the state of trigger FF2 output y2, and y2 is a high level, and D2 also is a high level, otherwise be low level, the state of D3 is because not gate G8 output high level is exported the state of y3 so be decided by trigger FF3, y3 is a high level, and D3 also is a high level, otherwise is low level.

After the machine of rising, the state of three triggers (y1 y2 y3)=(LLL), S0=H, with door G11, G13 opens, and waits for that dialing signal X0 or X1 arrive.At this moment, if what push is not that " 0 " or " 1 " then X00, X16, X01, X38, X30 are low levels, make state (D1 D2 D3)=(the H L L) of three flip-flop data ends, under the effect of the M of integrated dialing trigger DIL end output high level, make (y1y2 y3)=(H L L), because y1=L, triggering signal control gate G4 is sealed, later dialing just can not have the Cp signal, (y1 the y2y3)=state of (H L L) will remain to and play machine next time, can normally carry out with the short distance phone that guarantees non-audio communication service.If rise behind the machine first group be " 0 ", then X00 is a high level, so (D1 D2 D3)=(L H L) is under the effect of Cp signal, (y1 y2 y3)=(L H L), S2=H, T1 conducting, oscillating crystal one end ground connection and failure of oscillation, this state will remain to and play machine next time, dial toll telephone with restriction.If after playing machine first group be " 1 ", X1 then, X01=H, so (D1 D2 D3)=(LL H) under the effect of Cp signal, (y1 y2 y3)=(L LH), S1=H, G12 opens, and waits for and dials " 6 " signal X6 next time.If what push is not " 6 ", then X00, X16, X01, X38, X30 are low levels, but y3 is still high level, (so D1 D2 D3)=(HL H), under the effect of Cp signal, (y1 y2 y3)=(HL H), G4 is closed, can not produce the Cp signal, this state will remain to and play machine next time, can normally carry out with the short distance phone of assurance with the non-audio communication service headed by " 1 ".If what push is " 6 ", X16=H then, (D1 D2D3)=(L H H), (y1 y2 y3)=(L H H) under the effect of Cp signal, S3=H, G14, G15 open wait and dial " 8 " signal X8 next time or dial " 0 " signal X0, if what push is not that " 8 " neither " 0 ", X00 then, X16, X01, X38, X30 is a low level, but y2, y3 is a high level, (D1 D2 D3)=(H H H) is under the effect of Cp signal, (y1 y2 y3)=(H H H), G4 is closed, and can not produce the Cp signal, this state will remain to and play machine next time, can normally carry out with the short distance phone of assurance with the non-audio communication service headed by " 16 ".If push " 8 " or " 0 " afterwards in group " 16 ", then X38 or X30 are high level, (so D1 D2 D3)=(L H L), under the effect of Cp signal, (y1 y2 y3)=(L H L), S2=H, the T1 conducting, oscillating crystal one end ground connection and failure of oscillation, this state will remain to and play machine next time, dial " 168 " with restriction, " 160 " audio communication Service Phone.The operation principle that redials the storage, clearing device is such: after playing machine, y1 is a high level, the output S0 of decoder G1 also is a high level, triode T3 conducting, the high level of y1 can not be to capacitor C 3 chargings through resistance R 5 ground connection, so triode T2 ends, not influence of power vd D to integrated dialer, but after effectively dialling, S0 is a low level, the high level of y1 can make triode T2 be in conducting state to capacitor C 3 chargings, but because of diode D3 reverse bias, so the power vd D of integrated dialer is not still influenced,, if on-hook at this moment, then keep power vd D ground connection because of the storage that makes integrated dialer that disappears suddenly of diode D3 reverse bias, the content that redials in the storage, clearing device promptly is eliminated.If not effectively dialing, then because of y1 is that low level can not be to capacitor C 3 chargings, switch transistor T 2 is ended, thereby guarantees that plain old telephone can utilize redial key to redial.

When the tapered end switch SW closing of contact, trigger FF1 resets all the time, and y1 is a low level, and triggering signal control gate G4 is closed and can not produces the CP signal, push the state that any chain all can not change three triggers, the user can arbitrarily dial long-distance or the audio communication Service Phone

G1 in the present embodiment, G2, G3, G4, G5, G6, G7, G8G9, G10, G11, G12, G13, G14, G15, G16, G17, G18, G19, FF1, FF2, FF3 can realize with 4000 series or 74HC series cmos circuit, FF1, FF2, FF3 can be combined into 74HC74 or with gate circuit.

Embodiment two: pressurizer (21) is made up of resistance R 1, capacitor C 1 and diode D1, the effect of diode D1 is to guarantee that the voltage on the capacitor C 1 can not be to line discharge to guarantee effective dialing and to differentiate in proper order and state retainer (22) reliable operation that exit 1 is that voltage stabilizing output conduct is effectively dialled and order is differentiated and the power supply of state retainer (22) when the instantaneous reduction of line voltage distribution.Effectively dialing and order discriminating thereof and state retainer (22) are by not gate G1, G2, resistance R 6, R7, diode D2, D3, D4, the trigger FF1 that D5 is combined into, not gate G3, G4, resistance R 8, R9, diode D6, the trigger FF2 that D7 is combined into, not gate G5, G6, resistance R 10, R11, diode D8, D9, the trigger FF3 that D10 is combined into, three inputs and door G7, G8, the decoder that G9 forms, fet T2, T3, T4, T5, T6, the switching circuit of forming, double pole triode T1, resistance R 17, R18, the gate circuit that diode D17 forms, diode D13, D14, D15, the dialing identification circuit that D16 forms, R12, C4, R13, C5, R14, the integrating circuit that C6 forms, R5, the differential circuit that C3 forms, resistance R 2, capacitor C 2 is formed.Redial the storage, clearing device and form telephone keyboard (23)-KB by fet T7, T8, diode D11, D12, resistance R 15, R16, capacitor C 7.Integrated dialer (24) is made up of integrated dialing trigger DIL and oscillating crystal Cr.Dial impulse output driver (25) is made up of transistor V2 and resistance R 4.Electronic switch (26) is made up of transistor V1 and resistance R 3.HS is a switch hook, and this contact disconnected when telephone receiver hung up, and this closing of contact when telephone receiver is mentioned is provided the required power supply of telephone set and prepared dialing or conversation by telephone network.Whether the tapered end switch SW needs to block selector switch long-distance and audio communication service dialing.Line 4 ends lead to the telephone set communicator.The contact sets 2 of line 3 termination telephone hook switch.

The method of blocking dialing is that the one end ground connection of the oscillating crystal Cr in the integrated dialer (24) is made it failure of oscillation, is connected with oscillating crystal Cr with a double pole triode T1 for this reason.When the output y2 of trigger FF2 is a high level, and the y3 of FF3 is when being output as high level, double pole triode T1 conducting, and with the end ground connection of oscillating crystal Cr, integrated dialer can not be worked, and dialing can't be carried out.Otherwise if y2 and y3 are not above-mentioned states, then double pole triode T1 ends, and oscillating crystal Cr is not grounded, and vibration continues, and integrated dialer operate as normal can dial.

The function of trigger FF1 is that effectively dialing is differentiated and state keeps, and the function of trigger FF2, FF3 is that the order of effectively dialing is differentiated and state keeps.The input with door G7, G8, G9 as decoder is respectively (y1 y2 y3) (y1 y2 y3), (y1 y2 y3), their output is respectively S0, S1, S3.After mentioning telephone receiver or pushing switch hook, three triggers reset under the effect of resistance R 2, capacitor C 2 reset circuits.So having only S0 in the decoder output signal is high level, make T2 and T4 unlatching in the fet, prepare acknowledge(ment) signal X0 or X1.If what dialled this moment is not " 0 ", neither " 1 " then T2, T3, T4, T5, T6 do not have signal output, and the M output of having only integrated dialer makes FF1 set, so y1 becomes low level, making decoder output all is low level, T2, T3, T4, T5, T6 do not work, and this state will remain to and play machine next time and can normally carry out with the short distance phone that guarantees non-audio communication service.If first group of " 0 " key, then can to make signal X60 by triode T2 be low level to the X0 low level signal, the X60 signal affacts reset input and the FF2 set input of trigger FF1 simultaneously, make the FF1 hold reset, and FF2 set, y2 is a high level, makes the T1 conducting, oscillating crystal Cr one end ground connection and failure of oscillation.Simultaneously, decoder output all is low level, and T2, T3, T4, T5, T6 do not work, and this state will remain to and play machine next time and dial toll telephone with restriction.If first group of " 1 " key, then can to make signal X11 by triode T4 be low level to the X1 low level signal, the X11 signal affacts reset input and the FF3 set input of trigger FF1 simultaneously, make the FF1 hold reset, and FF3 set, y3 is a high level, make T3 work, the X6 signal is accepted in preparation, if what dialled this moment is not " 6 ", T2 then, T3, T4, T5, T6 does not have signal output, and have only the M output of integrated dialer to make FF1 set, so y1 becomes low level, making decoder output all is low level, T2, T3, T4, T5, T6 does not work, and this state will remain to and play machine next time and can normally carry out with the short distance phone of the non-audio communication service headed by " 1 " guaranteeing.If what dial is " 6 ", then can to make signal X60 by triode T3 be low level to the X6 low level signal, the X60 signal affacts reset input and the FF2 set input of trigger FF1 simultaneously, make the FF1 hold reset, and FF2 set, y2 is a high level, make T5, the T6 conducting, X0 or X8 signal are accepted in preparation, if what dialled this moment is not " 0 ", neither " 8 ", then T2, T3, T4, T5, T6 does not have signal output, and has only the M output of integrated dialer to make FF1 set, so y1 becomes low level, making decoder output all is low level, T2, T3, T4, T5, T6 does not work, and this state will remain to and play machine next time and can normally carry out with the short distance phone of the non-audio communication service headed by " 16 " guaranteeing.If what dial for the third time is " 0 " or " 8 ", then can to make X80 by T5 or T6 be that the input that resets that low level affacts FF3 makes y3 become low level from high level for X0 or X8 signal.Because y2 has been that high level makes the T1 conducting, oscillating crystal Cr one end ground connection and failure of oscillation.Simultaneously, decoder output all is low level, and T2, T3, T4, T5, T6 do not work, and this state will remain to and play machine next time and dial " 168 ", " 160 " audio communication Service Phone with restriction.

The operation principle that redials the storage, clearing device is identical with embodiment one.

When the closing of contact of tapered end switch SW, trigger FF1 set all the time, decoder output S0, S1, S3 are low levels, and T2, T3, T4, T5, T6 do not work, and the user can arbitrarily dial long-distance or the audio communication Service Phone.

The operation principle of the dialing identification circuit in the present embodiment is such: row (row) line is not a high level when pressing key, row (OK) line is a low level, during by next key, line under this key and alignment all are low levels, the integrated dialer that the level of other lines and alignment is constant, an available diode seal in row (row) contact and the integrated dialer of keyboard and go between (row) input pin accordingly.The anode of diode is received integrated dialer and is gone (row) input pin accordingly, and negative electrode is the lead-out wire that this key is pressed in identification, and low level is effective.

The effect of the integrating circuit in the present embodiment is the signal pulse of broadening switching circuit output, and the effect of differential circuit is that integrated dialer M output becomes burst pulse.

G1 in the present embodiment, G2, G3, G4, G5, G6, G7, G8, G9 can realize with the cmos circuit of 4000 series or 74HC series.

Claims (4)

1, a kind of can the restriction simultaneously fornicated telephone set dialing mechanism long-distance and the audio communication service, comprise telephone keyboard (23), integrated dialer (24), dial impulse output driver (25), electronic switch (26), it is characterized in that: one provides effective dialing of power supply by pressurizer (21) and order is differentiated and state retainer (22) is connected to described keyboard (23), integrated dialer (24), described effective dialing and order thereof differentiate and are connected with described integrated dialer (24) by redialing storage, clearing device (27) with state retainer (22) output that described effective dialing and order thereof are differentiated and an input of state retainer (22) passes through tapered end switch SW ground connection.

2, according to claim 1 can the restriction simultaneously fornicated telephone set dialing mechanism long-distance and the audio communication service, it is characterized in that described effective dialing and order thereof are differentiated and state retainer (22) is made up of trigger, decoder, dialing identification circuit, gate circuit or switching circuit, triggering signal control gate or differential circuit and integrating circuit, triode, diode, resistance, electric capacity.

3, the telephone set dialing mechanism that can limit the long-distance and audio communication of fornication service simultaneously according to claim 1 is characterized in that the described storage, clearing device (27) that redials is made up of triode, diode, resistance, electric capacity.

4, the described effective dialing of telephone set dialing mechanism and the order thereof that can limit the long-distance and audio communication of fornication service simultaneously according to claim 2 differentiated and state retainer (22), it is characterized in that described dialing identification circuit is made up of gate circuit or diode.

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