CN1066949A - A kind of automatic arrangement of answering call for phone - Google Patents

Abstract

A kind of automatic arrangement of answering call for phone, it comprises that ringing-current receives and interface circuit language circuit, delay circuit, speech amplifier circuit and loud speaker.This device can not only be replied the calling subscriber, can also called do not want to reply or not the time reply automatically, the conversation of its whole calling and called all is played out from loud speaker.This device can be made separately again and be used with ordinary telephone set, also can be contained in the telephone set and inquiry automatically the telephone set of answering the calling subscriber.

Description

A kind of automatic arrangement of answering call for phone

The present invention relates to a kind of telephone communication unit, more particularly, what it related to is a kind of automatic arrangement of answering call for phone that is arranged on telephone terminal.

Present existing telecommunication terminal telephone machine mainly points out the called subscriber to carry out off-hook and conversation with the form of ring or music.In Chinese patent CN2086484U specification, a kind of telephone automatic calling device is disclosed, it can realize automatic off-hook and after replying, and directly calls called people's name by loud speaker by caller, but as called not at automatic hand-up.But this device can only pass through the speech of loudspeaker plays caller, and under the situation of called missed call, it can not require to look for the people to reply to caller and just hang up phone.

The objective of the invention is to, a kind of automatic arrangement of answering call for phone is provided, it not only can reply caller, can also caller require conversation called not or when not wanting to answer the call, caller is answered, and all communication process all comes out by loudspeaker plays, and the calling subscriber can't hear any sound except that the sound that this device sends during this period.Simultaneously, device integrated level height of the present invention is beneficial to and produces and use.

Automatic arrangement of answering call for phone of the present invention has audio amplifier circuit 40 and the loud speaker 50 that is connected with audio amplifier circuit output; Ringing-current receives and interface circuit 10, be used for telephone set not during off-hook with tip L ₁With ring-wire L ₂By the first switch HS ₁With second switch HS ₂Circuit is inserted said ringing-current receive and interface circuit 10, at the first switch HS ₁An end 2 and second switch HS ₂An end 5 between string the one capacitor C and first relay J arranged ₁; Said terminal 2 passes through normal opened contact J in parallel after resistance R _1-34And J _2-34Be connected to language circuit 20; The 3rd switch HS ₃Contact 7 and 8, normal opened contact J in parallel _1-12And J _2-12, normally closed contact J _4-12With second relay J ₂Be serially connected with between positive source Vo and the ground; A language circuit 20, it has first language memory A and second language memory B, and their output is connected to the first coupling transformer B respectively ₁Primary coil b ₁With the second coupling transformer B ₂Primary coil b ₂, said normal opened contact J in parallel _1-34And J _2-34To an end of language circuit 20 through the first transformer B ₁Secondary coil b ₃, the second transformer B ₂Secondary coil b ₄Input transformer B with said audio amplifier circuit 40 ₃Primary coil b ₁₂Be connected to said terminal 5; A delay circuit 30 has the first delayer T ₁With the second delayer T ₂, normal opened contact J _1-56Start the said first delayer T ₁, the 3rd relay is connected on the said first delayer T ₁Output, normal opened contact J _3-56Start the second delayer T ₂, the 4th relay J ₄Be connected on the said second delayer T ₂Output, it is by said contact J _4-12Control said second relay J ₂Release.

Below in conjunction with accompanying drawing the embodiment of apparatus of the present invention is described particularly, wherein:

Fig. 1 is a frame principle figure of the present invention;

Fig. 2 is a circuit diagram of the present invention.

Fig. 1 shows the operation principle of automatic arrangement of answering call for phone of the present invention on the whole.Wherein ringing-current receives and interface 10 can make this device when ringing-current arrives and the outside line connection, the simulation off-hook, provide path for inputing or outputing audio signal, and trigger the work of other parts circuit, and when receiving on-hook signal and make, realize automatic hand-up by relay.Language circuit 20 can provide problem to the calling subscriber, as " who are you, and whom you look for ... " and answer the calling subscriber, as " people that you will look for does not exist ... ".Therefore, it has two language memories to store above-mentioned term.Its language exports the external call line to by ringing-current and interface circuit 10.Delay circuit 30 is delayed time in two stages, and they control the start and end time of two language memory operation respectively, just carries out first time-delay earlier, then carries out second time-delay, the relay J when second time-delay finishes in ringing-current and interface circuit 10 ₄Feed signals makes its release, and whole device is restored, and promptly realizes automatic hand-up.Here the startup of delay circuit 30 is subjected to ringing-current and interface circuit 10 controls.Audio amplifier circuit 40 is by transformer coupled line signal, therefore no matter is that the voice signal or the speech of automatic-answering back device of caller all is exaggerated and plays out through loud speaker 50.

In the physical circuit figure of the apparatus of the present invention shown in Fig. 2, show the physical circuit figure of each unit corresponding with dotted line and corresponding label with Fig. 1.Language memory A and B use IC9300 in Fig. 2; Delayer T ₁And T ₂Use NE555; Audio amplifier circuit uses LM386; Switch HS ₁And HS ₂Be to be used for the switch that apparatus of the present invention and telephone set are changed, HS ₃It is the DC power supply that is used to cut off this device.At telephone set not during off-hook, tip L ₁By switch HS ₁1 and 2 terminations go into ring-wire L ₂By switch HS ₂4 and 6 terminations go into, as long as telephone set and mobile phone picks up then said switch HS ₁By 1 and 3 ends, switch HS ₂By 4 and 6 ends with tip L ₁With ring-wire L ₂Be converted to telephone set.While switch HS ₃The DC power supply of this contrive equipment is cut off in conversion, makes its automatic recovery.

In circuit shown in Figure 2, when calling in the outside, when promptly sending ringing-current here by switch, ringing-current is through tip L ₁, switch HS ₁Contact 1 and 2, capacitor C, relay J ₁, switch HS ₂Contact 5 and 4 and ring-wire L ₂, make relay J ₁Action.It causes relay J ₁Normal opened contact J _1-12, J _1-34And J _1-56Closure, and contact J _1-12Closure make the anodal V of power supply ₀Through switch HS ₃Contact 7 and 8, contact J _1-12, normally closed contact J _4-12, relay J ₂, indicator light D connects to the circuit on power supply ground, and this has caused relay J ₂Work, simultaneously indicator light D shows.

Contact J _1-34Closure, make circuit L ₁And L ₂Through switch HS ₁Contact 1 and 2, contact J _1-34, transformer B ₁Coil b ₃, transformer B ₂Coil b ₄, resistance R, the input transformer B of audio frequency amplifier 40 ₃Coil b ₁₂With switch HS ₂Contact 4 and 5 constituted a loop, thereby switch stops to send ringing-current, makes this device be in the automatic off-hook state, switch changes and send direct current simultaneously, so relay J ₁Quit work, at this moment, relay J ₂Normal opened contact J _2-34Closure replaced contact J _1-34Operating state, to keep the off hook state of this device, make direct current constitute the loop.

Relay J ₁Normal opened contact J _1-56Closure disconnect again, caused the triggering of memory A in the language circuit 20, this memory A is through coupling transformer B ₁Primary coil b ₁, secondary coil b ₂To inquire that term is coupled to above-mentioned loop, and send the calling subscriber to that simultaneously, the inquiry term is also through the input coupling transformer B of audio amplifier circuit 40 ₃Elementary b ₁₂Be coupled to this amplifying circuit 40, and cause the broadcast of loud speaker 50.

Simultaneously, normal opened contact J _1-56Closure disconnect again and caused delayer T in the delay circuit 30 ₁Work, its delay time is t=1.43R ₁C ₁, R wherein ₁Be variable resistor, then be connected to the relay J of its output time of delay ₃Start working, at T ₁Between time delay, desire to reply switch HS as the called subscriber ₁, HS ₂, HS ₃When being controlled by telephone bandset, only need pick up mobile phone can converse switch HS ₁, HS ₂, HS ₃When removing key control, need pick up mobile phone, pull and remove key, can converse; Do not hear the other side's answer as the called subscriber, can click K switch ₁, memory A can send the inquiry term to the calling subscriber again.

If called not or do not prepare to answer the call T ₁Delay arrival time causes relay J ₃Normal opened contact J _3-12Closure again break trigger language memory B play to answer language, as " people that you will look for does not exist ... ".The course of work of its circuit such as language memory A, after the answer of hearing the calling subscriber, the called subscriber thinks to decline immediately the calling subscriber as the called subscriber, need click K switch ₂, relay is worked immediately, language memory B is play answer language.

Here relay J ₃At T ₁Work during delay arrival time, but because relay J ₃Normally closed contact J _3-34Disconnection, relay J 3 is discharged.

Relay J ₃Normal opened contact J _3-56Closure disconnect again, triggered the delayer T of delay circuit 30 ₂Work, its delay time is t ₂=1.43R ₂C ₂, T ₂Should be greater than the time of playing language memory B reply term, wherein R ₂It is variable resistor.Work as T ₂During delay arrival time, be connected to the relay J of its output ₄Start working, it causes its normal opened contact J _4-12The disconnection of (in circuit 10).Thereby cause relay J again ₂Release, apparatus of the present invention are restored, promptly realized automatic hand-up.

In apparatus of the present invention course of work, pick up the telephone set that is connected with this device as the user, then switch HS ₁Contact go to 1 and 3, and switch HS ₂Contact go to 4 and 6 so that calledly converse by phone, HS simultaneously ₃Contact 7 and 8 disconnect, make this device deenergization.

About the internal circuit of audio frequency amplifier 40, because it is common integrated amplifier, so its operation principle does not describe in detail at this.

This device can be made separately with telephone set and be used, and also can be loaded in the same shell with telephone set, looks for people's telephone set automatically and become.

Claims (4)

1, a kind of automatic arrangement of answering call for phone, it comprises audio amplifier circuit 40 and loud speaker 50, it is characterized in that:

Ringing-current receives and interface circuit 10, be used for phone not during off-hook with tip L ₁With ring-wire L ₂By the first switch HS ₁With second switch HS ₂Circuit is inserted, at the first switch HS ₁An end 2 and second switch HS ₂An end 5 between string the one capacitor C and first relay J arranged ₁Said terminal 2 also through resistance R with normal opened contact J in parallel _1-34And J _2-34Export language circuit 20 to; Normal opened contact J in parallel _1-12And J _2-12An end through the 3rd switch HS ₃Contact 7 is connected with positive source Vo with 8, and its other end is through normally closed contact J _4-12With second relay J ₂Join with battery ground;

A language circuit 20, it has one and the first coupling transformer B ₁Primary coil b ₁The first language memory A that joins and one and the second coupling transformer B ₂Primary coil b ₂The second language memory B that joins, said ringing-current receive and interface circuit 10 to the output of language circuit 20 through the first transformer B ₁Secondary coil b _s, the second transformer B ₂Secondary coil b ₄Input coupling transformer B with said audio amplifier circuit 40 _sPrimary coil b ₁₂Be connected to said terminal 5;

A delay circuit 30 has one first delayer T ₁With one second delayer T ₂, normal opened contact J _1-56Start the said first delayer T ₁, the 3rd relay is connected on the described first delayer T ₁Output, normal opened contact J _3-56Start the second delayer T ₂, the 4th relay J ₄Be connected on the said second delayer T ₂Output, it is by said contact J _4-12Control said second relay J ₂Release.

2, according to the said device of claim 1, it is characterized in that: the said first speech memory A is by normal opened contact J _1-56Trigger; The said second speech memory B is triggered by normal opened contact J3-12.

3, according to the said device of claim 1, its feature is having one first K switch ₁, be used for the broadcast of the manual triggers first speech memory A; A second switch K ₂Be used for the broadcast of the manual triggers second speech memory B.

4, according to the said device of claim 1, it is characterized in that: said second relay J ₂And be serially connected with an indicator light D between the power supply ground.

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