CN205377942U - Novel landline telephone machine based on signal incorporation mode realizes external dialing - Google Patents
Novel landline telephone machine based on signal incorporation mode realizes external dialing Download PDFInfo
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- CN205377942U CN205377942U CN201520915404.3U CN201520915404U CN205377942U CN 205377942 U CN205377942 U CN 205377942U CN 201520915404 U CN201520915404 U CN 201520915404U CN 205377942 U CN205377942 U CN 205377942U
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Abstract
The utility model discloses a landline telephone machine of external dialing is realized based on signal incorporation mode, include the electromechanical way of landline telephone, elementary direct current buffer circuit, impedance matching circuit, discharging material silo circuit and add circuit, elementary direct current buffer circuit, the preceding stage is accomplished and dual -tone multifrequency signal generator's direct current is kept apart, and the back level is accomplished and the direct current on the electromechanical way of landline telephone is kept apart, impedance matching circuit, the impedance match with dual -tone multifrequency signal generator is accomplished to the preceding stage, and the impedance match with the electromechanical way of landline telephone is accomplished to the back level. The utility model discloses on the basis of traditional telephone set network, increase a functional module, even make the neotype landline telephone machine of this kind not only can use traditional mode to accomplish telephone dialing with self dialing keyboard, can also accomplish telephone dialing to the intelligent terminal that can produce dual -tone multifrequency (DTMF) dialing signal through wired connection.
Description
Technical field
This utility model belongs to communication technical field, is specifically related to merge mode based on signal and realizes the Novel fixed telephone set of external dialing.
Background technology
Existing fixed telephone (hereinafter referred to as telephone set), it is all use the dialing keyboard and dual-tone multifrequency (DTMF) signal generating circuit that carry on fuselage, user presses dialing keyboard one by one according to called phone number and control dual-tone multifrequency (DTMF) signal generating circuit and send dual-tone multifrequency (DTMF) signal and complete dialing.Although some telephone sets can also storing phone number, so that user just can complete dialing by button on a small quantity, but the reason due to telephone set manufacturing cost aspect, ordinary telephone set can only preserve dozens of telephone number, also telephone number is carried out editing and manages by inconvenience, and can not labelling Chinese Name and other user profile.
The traditional telephone set dial technology of the above, uses inconvenience, the directory management function powerful relative to the intelligent terminal's (such as smart mobile phone) being widely used at present and dial mode simple to operate, it appears very backward.
In the ZL02205824.9 utility model patent of bulletin on January 22nd, 2003, propose employing sound coupled modes, utilize dual-tone multifrequency (DTMF) sound that the speaker that the receiver (MIC) of conventional telephone set receives other dual-tone multifrequency (DTMF) dialing mechanism sends to complete the solution of dialing.Although this utility model patent also can solve the problem that conventional telephone set dialing is inconvenient, but there is the deficiency of at least 3 aspects in sound coupled modes simultaneously: the relative position between receiver (MIC) and dual-tone multifrequency (DTMF) dialing mechanism speaker is accurately (shown in Fig. 1 of this patent) 1) to need user to ensure, otherwise will produce mistake dialing；2) user also to free hand to be operated, and operation easier is bigger；3) because the speaker of dual-tone multifrequency (DTMF) dialing mechanism needs to send bigger sound, dialing procedure is relatively big to the interference of other staff, particularly especially prominent under open working environment.
In the ZL201520154958.6 utility model patent of bulletin on July 8th, 2015, it is proposed that the method adopting wired connection mode to transmit dual-tone multifrequency (DTMF) signal, solve the deficiency of ZL02205824.9 utility model patent.
Utility model content
This utility model be on July 8th, 2015 bulletin ZL201520154958.6 utility model patent basis on carried out improve and perfect, mainly propose more circuit structure form and the selection of more signal insertion point, can select to use according to the feature of the original circuit of fixed telephone, improve the scope of application of utility model further.
The purpose of this utility model is to solve the technical problem existing for prior art, propose to merge mode based on signal and realize the Novel fixed telephone set of external dialing, on the basis of conventional telephone set circuit, increase a functional module, this novel fixed telephone is made to be possible not only to namely use self dialing keyboard to complete dialing with traditional approach, it is also possible to the intelligent terminal being connected to produce dual-tone multifrequency (DTMF) dialing signal by wired mode completes dialing.
This utility model adopts the following technical scheme that
Merge mode based on signal and realize the Novel fixed telephone set of external dialing, including fixed telephone circuit, primary DC isolation circuit, impedance matching circuit, Signal Matching circuit and add circuit；Described primary DC isolation circuit, prime completes the DC-isolation with dual tone multi-frequency signal generator, and rear class completes and the DC-isolation of fixed telephone circuit；Described impedance matching circuit, prime completes the impedance matching with dual tone multi-frequency signal generator, and rear class completes and the impedance matching of fixed telephone circuit；Described Signal Matching circuit, prime completes the Signal Matching with dual tone multi-frequency signal generator, and rear class completes and the Signal Matching of fixed telephone circuit；Described add circuit, the binaural signal from dual tone multi-frequency signal generator is added by prime, and touch-tone signal is joined in fixed telephone circuit by rear class；Described signal amplification circuit completes the amplification of touch-tone signal, to adapt to the level demand of telephone set network.
Preferably, described primary DC isolation circuit is audio coupling transformator, and this fixed telephone also includes secondary direct isolation circuit, and described secondary direct isolation circuit and add circuit are connected with audio coupling transformer secondary, fixed telephone circuit respectively；Described audio coupling transformer primary is external to dual tone multi-frequency signal generator, and the primary side of described audio coupling transformator is input coiling group, and described input coiling group is connected in two-way sound channel or a road sound channel of external touch-tone signal；The primary side of described audio coupling transformator is output coiling group, and described output coiling group is connected to secondary direct isolation circuit；Described secondary direct isolation circuit is connected to add circuit；Touch-tone signal is incorporated in fixed telephone circuit by described add circuit.
Preferably, described input coiling group includes winding L1 and L2, and described winding L1 and L2 is respectively connecting in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
Preferably, described input coiling group includes winding L1, described winding L1 and is connected to resistance Rx1 and Rx2, and described resistance Rx1 and Rx2 is connected to electric capacity Cx1, Cx2, and electric capacity Cx1, Cx2 are respectively connecting to again in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
Preferably, described input coiling group includes winding L1, L1 and is connected to electric capacity Cx1, Cx2, and electric capacity Cx1, Cx2 are respectively connecting in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
Preferably, described input coiling group includes the wherein road sound channel that winding L1, described winding L1 are directly connected in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, Rx and Cx and connects, and one end of winding L3 connects Cx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
Preferably, described primary DC isolation circuit includes electric capacity Cx1, Cx2 and Cx3, wherein electric capacity Cx1, Cx2 side connects the two-way sound channel of external double-audio signal respectively, the opposite side of electric capacity Cx1, Cx2 is connected to resistance Rx1 and the Rx2 for impedance matching and level match, described electric capacity Cx3 and connects the two-way sound channel of external double-audio signal.
Preferably, described primary DC isolation circuit includes electric capacity Cx1, Cx3, wherein one end of electric capacity Cx1 connects the two-way sound channel Zhong mono-tunnel sound channel of external double-audio signal, the other end of electric capacity Cx1 connects resistance Rx1, described electric capacity Cx3 for impedance matching and level match and connects the two-way sound channel Zhong mono-tunnel sound channel of external double-audio signal.
Preferably, described signal amplification circuit includes audion Qx, resistance Rx3, Rx4, Rx5, Rx6 and electric capacity Cx4, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, electric capacity Cx4 is used for preventing signal amplification circuit generation positive feedback signal from vibrating, and double-audio signal is exported in telephone set network by the colelctor electrode of Qx.
Preferably, described signal amplification circuit includes audion Qx, resistance Rx3, Rx4, Rx5, Rx6, Rx7, Rx8 and electric capacity Cx4, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, electric capacity Cx4 is used for preventing signal amplification circuit generation positive feedback signal from vibrating, electric capacity Cx6 has been used for and the DC-isolation of conventional telephone set circuit, and double-audio signal is joined in telephone set network by resistance Rx8 for forming add circuit with the related elements in conventional telephone set circuit.
Compared with prior art, this utility model adopts wired connection mode to transmit dtmf signal between telephone set and external dual-tone multifrequency (DTMF) dialing mechanism, not only solve the problem that conventional telephone set dialing is inconvenient, also solve the weak point existing for technical scheme adopting sound coupled modes to complete dialing:
1, use convenient: the putting position of this utility model telephone set and external dual-tone multifrequency (DTMF) dialing mechanism is relatively free, and user operation is convenient.
2, dialing accuracy rate is higher: this utility model adopts wired transmission dtmf signal, and accuracy rate can reach 100% substantially.
3, interference it is substantially free of to external world: other staff by speaker sounding, are not substantially free of interference, it is possible to widely use under open working environment by dialing procedure.
Accompanying drawing explanation
Fig. 1 is module map of the present utility model；
Fig. 2 (a)-Fig. 2 (f) is the schematic diagram of six kinds of functional modules of the present utility model；
Fig. 3 (a)-Fig. 3 (b) is the schematic diagram of the functional module setting up amplifying circuit；
Fig. 4 is the circuit diagram of embodiment 1；
Fig. 5 is the circuit diagram of embodiment 2；
Fig. 6 is the circuit diagram of embodiment 3.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Referring to Fig. 1, this utility model telephone set is mainly additionally arranged a functional module on traditional telephone set network, and this functional module is external to other touch-tone signal generating means by the mode of wired connection.
In the present embodiment, merge mode based on signal and realize the Novel fixed telephone set of external dialing, it is characterised in that include fixed telephone circuit, primary DC isolation circuit, impedance matching circuit, Signal Matching circuit and add circuit；Described primary DC isolation circuit, prime completes the DC-isolation with dual tone multi-frequency signal generator, and rear class completes and the DC-isolation of fixed telephone circuit, and described primary DC isolation circuit is audio coupling transformator or blocking capacitor；Described impedance matching circuit, prime completes the impedance matching with dual tone multi-frequency signal generator, and rear class completes and the impedance matching of fixed telephone circuit；Described Signal Matching circuit, prime completes the Signal Matching with dual tone multi-frequency signal generator, and rear class completes and the Signal Matching of fixed telephone circuit；Described add circuit, the binaural signal from dual tone multi-frequency signal generator is added by prime, and touch-tone signal is joined in fixed telephone circuit by rear class；Described signal amplification circuit completes the amplification of touch-tone signal, to adapt to the level demand of telephone set network.
Below what's new module is specifically described, as shown in Fig. 2 (a), in figure, T is audio coupling transformator, undertake isolated DC, impedance matching, the functions such as level match, wherein winding L1, L2 receives a left side for external dtmf signal respectively, right two sound channel signals also complete prime level and impedance matching, winding L3 is high impedance output, reduce the impact on late-class circuit and export the level mated with late-class circuit, Cx undertakes secondary isolated DC function, resistance Rx then has impedance matching and level match function, pass through A, external dtmf signal is joined in conventional telephone set circuit by B 2.
Fig. 2 (b), compared with Fig. 2 (a), eliminates the winding L2 of audio coupling transformator, but adds Cx1, Cx2 and Rx1, Rx2.In figure, T is audio coupling transformator, undertake isolated DC, impedance matching, the functions such as level match, a left side for external dtmf signal, right two sound channel signals are by isolated DC electric capacity Cx1, Cx2, again through being input to winding L1 after the add circuit being made up of Rx1 and Rx2, winding L1 simultaneously completes the level to external dtmf signal and impedance matching, winding L3 is high impedance output, reduce the impact on late-class circuit, Cx undertakes secondary isolated DC function, resistance Rx then has impedance matching and level match function, pass through A, external dtmf signal is joined in conventional telephone set circuit by B 2.
Fig. 2 (c) is the simplification modular circuit of Fig. 2 (b), eliminates resistance Rx1 and Rx2.In figure, T is audio coupling transformator, undertake the functions such as isolated DC, impedance matching, level match, the signal of left and right two sound channels of external dtmf signal passes through isolated DC electric capacity Cx1, Cx2, winding L1 it is input to after merging, winding L1 simultaneously completes the level to external dtmf signal and impedance matching, winding L3 is high impedance output, reduce the impact on late-class circuit, Cx undertakes secondary isolated DC function, resistance Rx then has impedance matching and level match function, is joined in conventional telephone set circuit by external dtmf signal by A, B 2.
Fig. 2 (d) is the modular circuit more simplified, in figure, T is audio coupling transformator, undertake the functions such as isolated DC, impedance matching, level match, wherein winding L1 receives the signal of left and right two one of them sound channel of sound channel of external dtmf signal and completes level and impedance matching, winding L3 is high impedance output, reduce the impact on late-class circuit, Cx undertakes secondary isolated DC function, resistance Rx then has impedance matching and level match function, is joined in conventional telephone set circuit by external dtmf signal by A, B 2.
Fig. 2 (e) adopts capacitor to complete DC-isolation, in figure, Cx1, Cx2 and Cx3 undertake isolated DC function, by completely isolated for the direct current between this utility model telephone set and external dual tone multi-frequency signal generator, wherein electric capacity Cx1, Cx2 connects the two-way sound channel of external double-audio signal respectively, one end of resistance Rx1 and Rx2 is connected with electric capacity Cx1, Cx2 respectively, being connected to A point after other end parallel connection, resistance Rx1 and Rx2 has impedance matching and level match function simultaneously.By A, B 2, external dtmf signal is joined in conventional telephone set circuit.
Fig. 2 (f) is the simplification circuit of Fig. 2 (e), only receive external dtmf signal two-way sound channel Zhong mono-tunnel sound channel, in figure, Cx1 and Cx3 undertakes isolated DC function, by completely isolated for the direct current between this utility model telephone set and external dual tone multi-frequency signal generator, wherein electric capacity Cx1 connects the two-way sound channel Zhong mono-tunnel sound channel of external double-audio signal, one end of resistance Rx1 is connected with electric capacity Cx1, the other end is connected to A point, and resistance Rx1 has impedance matching and level match function simultaneously.By A, B 2, external dtmf signal is joined in conventional telephone set circuit.
Any one modular circuit in Fig. 2 (a)-Fig. 2 (e), amplifying circuit can be set up as required, amplifying circuit can also have various ways as required, Fig. 3, for Fig. 2 (e) and the combination of two different form of amplifying circuit, forms the newly-increased modular circuit with amplifying circuit.
In Fig. 3 (a), Fig. 2 (e) module and amplifying circuit is adopted to be combined into the newly-increased modular circuit with enlarging function, Qx and resistance Rx3 in figure, Rx4, Rx5, Rx6 and electric capacity Cx4 collectively constitutes amplifying circuit, the feature of this amplifying circuit is that A ' point is bias supply feed point and double-audio signal output point, it it is a kind of amplifying circuit conventional in telephone set network, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, Rx5 determines the amplification of amplifying circuit to a great extent, electric capacity Cx4 then prevents amplifying circuit generation positive feedback signal from vibrating.The input of amplifying circuit is connected with A, B 2 of Fig. 2 (e), and the A ' of amplifying circuit, B ' are then the output point of double-audio signal.
In Fig. 3 (b), Fig. 2 (e) module and amplifying circuit is adopted to be combined into the newly-increased modular circuit with enlarging function, in figure, Qx collectively constitutes amplifying circuit with resistance Rx3, Rx4, Rx5, Rx6, Rx7, Rx8 and electric capacity Cx4, this is a kind of conventional amplifying circuit, C ' point is bias supply feed point, A ' point is double-audio signal output point, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, Rx5 determines the amplification of amplifying circuit to a great extent, and electric capacity Cx4 then prevents amplifying circuit generation positive feedback signal from vibrating.The input of amplifying circuit is connected with A, B 2 of Fig. 2 (e), electric capacity Cx6 completes and the DC-isolation of conventional telephone set circuit, and double-audio signal is joined in telephone set network by resistance Rx8 with the related elements composition add circuit in conventional telephone set circuit.For smart mobile phone (hereinafter referred to as smart mobile phone) as external dual-tone multifrequency (DTMF) signal generation apparatus, specifically used method of the present utility model is described:
1, use dual-channel audio connecting line, the DTMF/In socket (recommending φ 3.5mm stereo jack) of the earphone socket (being generally φ 3.5mm stereo jack) of smart mobile phone Yu this utility model telephone set is coupled together.
2, start smart mobile phone, from smart phone book, message registration or note, extract the called phone number to dial, enter and prepare dialing status；User checks numbers possibly and suitably edits if desired, such as when calling number is private communication network users, called number needs when being public correspondence network users to increase dialing prefix, and these special numbers can also be editted and leave in smart phone book by certain user in advance.
3, take the handle of this utility model telephone set or press the hands-free switch of phone, after hearing dialing tone, can handle be temporarily placed on workbench, then operation smart mobile phone outputting dual tone multi-frequency (DTMF) dialing signal, now can hearing slight dial tone process in the receiver of this utility model telephone set, the hand-held handle of user waits that called subscriber converses after connecting.Dialing procedure can remove the connecting line of telephone set and smart mobile phone after completing, it is possible to keeps connecting in order to dialing next time.
Be combined as example below respectively (telephone set network of other models may select Fig. 2 (a)-Fig. 2 (f) or Fig. 3 (a)-Fig. 3 (b) with HCD868 (102) type telephone set network with Fig. 2 (a) and Fig. 3 (a), it is equally applicable to this utility model), illustrate to include the detailed description of the invention under the situations such as the merging of MIC signal, dtmf signal merging and HW highway signal merging.
Embodiment 1
The present embodiment is combined as example with HCD868 (102) type telephone set network and Fig. 2 (a) what's new modular circuit, adopts MIC signal to merge mode, is not provided with signal amplification circuit in functional module, and circuit diagram is as shown in Figure 4.By newly-increased functional module, from the touch-tone signal of other dual-tone multifrequency (DTMF) signal generation apparatus, will join in original call electromechanics road and the input point of MIC signal amplification circuit complete dialing.
In the present embodiment, HCD868 (102) type telephone set uses integrated circuit (GD2201) as core component, assume responsibility for major control function (including generation DTMF DTMF pulsing signal under the control of keyboard signal), achieve all functions of this type telephone set together with other circuit module.
In the diagram, MIC201 and MIC501 is the transmitter on telephone handle and the transmitter on phone fuselage respectively, and Q202 and Q201 and subsidiary component thereof have collectively constituted MIC signal amplification driving circuit.In newly-increased circuit in the present embodiment, wherein T is audio coupling transformator, undertake the functions such as isolated DC, impedance matching, level match, wherein winding L1, L2 mates with the level of left and right two sound channels for external dtmf signal and impedance respectively, winding L3 is high impedance output, reduce the impact on late-class circuit, and suitable signal level is provided.Cx undertakes secondary isolated DC function.Resistance Rx then collectively constitutes add circuit with R210, the R503 in primary circuit, there is impedance matching and level match function simultaneously, external dtmf signal is joined on the machine MIC signal path, after the signal amplification driving circuit amplification that Q202, Q201 and accessory circuit thereof collectively constitute, export outside line (LINE) then through Q101, exterior-line interface circuit.
Embodiment 2
The present embodiment is similar to Example 1, is combined as example with HCD868 (102) type telephone set network and Fig. 2 (a) what's new modular circuit, adopts the detailed description of the invention that dtmf signal merges, and circuit diagram is as shown in Figure 5.By newly-increased functional module, by the dual tone multi-frequency dtmf signal from other touch-tone signal generating means, join in original call electromechanics road and the input point of dual tone multi-frequency dtmf signal amplification circuit completes dialing.
This type telephone set of the present embodiment uses integrated circuit (GD2201) as core component, assume responsibility for major control function (including generation DTMF DTMF pulsing signal under the control of keyboard signal), achieve all functions of this type telephone set together with other circuit module.In Figure 5, under the control of dialing keyboard, the 37th foot output dtmf signal of integrated circuit (GD2201), after Q104, Q101 and Q102 and accessory circuit amplify and drive, outside line (LINE) is arrived in output.In the newly-increased circuit of the present embodiment, wherein T is audio coupling transformator, undertake the functions such as isolated DC, impedance matching, level match, wherein winding L1, L2 mates with the level of left and right two sound channels for external dtmf signal and impedance respectively, winding L3 is high impedance output, reduce the impact on late-class circuit, and suitable signal level is provided.Cx undertakes secondary isolated DC function.Resistance Rx then collectively constitutes add circuit with the R111 in primary circuit, there is impedance matching and level match function simultaneously, external dtmf signal is joined on the machine dtmf signal path, the signal amplification driving circuit collectively constituted via Q104 and accessory circuit thereof exports outside line (LINE) then through Q101, exterior-line interface circuit after amplifying.
Embodiment 3
The present embodiment is combined as example with HCD868 (102) type telephone set network and Fig. 3 (a) what's new modular circuit, adopts HW highway signal to merge mode, and circuit diagram is as shown in Figure 6.By newly-increased functional module, from the touch-tone signal of other dual-tone multifrequency (DTMF) signal generation apparatus, will join in original call electromechanics road and HW highway signal input point complete dialing.
In the present embodiment, HCD868 (102) type telephone set uses integrated circuit (GD2201) as core component, assume responsibility for major control function (including generation DTMF DTMF pulsing signal under the control of keyboard signal), achieve all functions of this type telephone set together with other circuit module.
In figure 6, electric capacity Cx1, Cx2 and Cx3 undertakes isolated DC function, by completely isolated for the direct current between this utility model telephone set and external dual tone multi-frequency signal generator, wherein electric capacity Cx1, Cx2 connects the two-way sound channel of external double-audio signal respectively, with electric capacity Cx1, resistance Rx1 and the Rx2 that Cx2 is respectively connected with forms add circuit, the input of A point and amplifying circuit it is parallel to after being added by two-way double-audio signal, the outfan of amplifying circuit and A ' point are connected on the HW highway junction point of conventional telephone set circuit, external double-audio signal is joined in telephone set network, this HW highway junction point is also the acquirement point of direct current biasing needed for amplifying circuit simultaneously, B ' point is then connected with the ground of conventional telephone set circuit.
Above-described embodiment is a kind of embodiment of the present utility model; but embodiment of the present utility model does not limit and this; be engaged in these those skilled in the art without departing from this utility model spirit and principle under make any amendment, replacement, improvement, be all contained in protection domain of the present utility model.
Claims (10)
1. merge mode based on signal and realize the Novel fixed telephone set of external dialing, it is characterised in that include fixed telephone circuit, primary DC isolation circuit, impedance matching circuit, Signal Matching circuit and add circuit；Described primary DC isolation circuit, prime completes the DC-isolation with dual tone multi-frequency signal generator, and rear class completes and the DC-isolation of fixed telephone circuit；Described impedance matching circuit, prime completes the impedance matching with dual tone multi-frequency signal generator, and rear class completes and the impedance matching of fixed telephone circuit；Described Signal Matching circuit, prime completes the Signal Matching with dual tone multi-frequency signal generator, and rear class completes and the Signal Matching of fixed telephone circuit；Described add circuit, the binaural signal from dual tone multi-frequency signal generator is added by prime, and touch-tone signal is joined in fixed telephone circuit by rear class；Described signal amplification circuit completes the amplification of touch-tone signal, to adapt to the level demand of telephone set network.
2. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 1, it is characterized in that, described primary DC isolation circuit is audio coupling transformator, this fixed telephone also includes secondary direct isolation circuit, and described secondary direct isolation circuit and add circuit are connected with audio coupling transformer secondary, fixed telephone circuit respectively；Described audio coupling transformer primary is external to dual tone multi-frequency signal generator, and the primary side of described audio coupling transformator is input coiling group, and described input coiling group is connected in two-way sound channel or a road sound channel of external touch-tone signal；The primary side of described audio coupling transformator is output coiling group, and described output coiling group is connected to secondary direct isolation circuit；Described secondary direct isolation circuit is connected to add circuit；Touch-tone signal is incorporated in fixed telephone circuit by described add circuit.
3. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 2, it is characterised in that described input coiling group includes winding L1 and L2, and described winding L1 and L2 is respectively connecting in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
4. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 2, it is characterized in that, described input coiling group includes winding L1, described winding L1 is connected to resistance Rx1 and Rx2, described resistance Rx1 and Rx2 is connected to electric capacity Cx1, Cx2, and electric capacity Cx1, Cx2 are respectively connecting to again in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
5. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 2, it is characterized in that, described input coiling group includes winding L1, L1 and is connected to electric capacity Cx1, Cx2, and electric capacity Cx1, Cx2 are respectively connecting in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, and described electric capacity Cx is connected with resistance Rx, and one end of resistance Rx and L3 is connected to fixed telephone circuit.
6. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 2, it is characterized in that, described input coiling group includes the wherein road sound channel that winding L1, described winding L1 are directly connected in the two-way sound channel of external touch-tone signal；Described output coiling group includes L3, and described secondary direct isolation circuit includes electric capacity Cx, and described add circuit includes resistance Rx, Rx and Cx and connects, and one end of winding L3 connects Cx, and the other end is connected directly to fixed telephone circuit.
7. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 1, it is characterized in that, described primary DC isolation circuit includes electric capacity Cx1, Cx2 and Cx3, wherein electric capacity Cx1, Cx2 side connects the two-way sound channel of external double-audio signal respectively, the opposite side of electric capacity Cx1, Cx2 is connected to resistance Rx1 and the Rx2 for impedance matching and level match, described electric capacity Cx3 and connects the signal ground of external double-audio signal generator.
8. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 1, it is characterized in that, described primary DC isolation circuit includes electric capacity Cx1, Cx3, wherein one end of electric capacity Cx1 connects the two-way sound channel Zhong mono-tunnel sound channel of external double-audio signal, the other end of electric capacity Cx1 connects resistance Rx1, described electric capacity Cx3 for impedance matching and level match and connects the signal ground of external double-audio signal generator.
9. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 1, it is characterized in that, described signal amplification circuit includes audion Qx, resistance Rx3, Rx4, Rx5, Rx6 and electric capacity Cx4, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, electric capacity Cx4 is used for preventing signal amplification circuit generation positive feedback signal from vibrating, and double-audio signal is exported in telephone set network by the colelctor electrode of Qx.
10. the Novel fixed telephone set realizing external dialing based on signal merging mode according to claim 1, it is characterized in that, described signal amplification circuit includes audion Qx, resistance Rx3, Rx4, Rx5, Rx6, Rx7, Rx8 and electric capacity Cx4, wherein resistance Rx3, Rx4, Rx5, Rx6 forms the biasing circuit of Qx, electric capacity Cx4 is used for preventing signal amplification circuit generation positive feedback signal from vibrating, electric capacity Cx6 has been used for and the DC-isolation of conventional telephone set circuit, double-audio signal is joined in telephone set network by resistance Rx8 for forming add circuit with the related elements in conventional telephone set circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520915404.3U CN205377942U (en) | 2015-11-16 | 2015-11-16 | Novel landline telephone machine based on signal incorporation mode realizes external dialing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520915404.3U CN205377942U (en) | 2015-11-16 | 2015-11-16 | Novel landline telephone machine based on signal incorporation mode realizes external dialing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205377942U true CN205377942U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520915404.3U Expired - Fee Related CN205377942U (en) | 2015-11-16 | 2015-11-16 | Novel landline telephone machine based on signal incorporation mode realizes external dialing |
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| Country | Link |
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| CN (1) | CN205377942U (en) |
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2015
- 2015-11-16 CN CN201520915404.3U patent/CN205377942U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20160706 Termination date: 20181116 |