CN2057298U - Auto-answering type telephone direct call unit - Google Patents

Abstract

The utility model relates to a novel telephone call unit, which is characterized in that an auto-answering type telephone direct call unit can automatically answer address or organization name of dialing number of a caller; the name of people which is called by the caller can be directly amplified and called, the sound volume can be continuously adjusted, and the auto-answering telephone direct call unit solves the inconvenience that a plurality of people commonly use telephones to need indirect message calling by manual operation. The utility model has the advantages of simple structure, and low cost, and is suitable for telephone message call in organizations, schools, hotels, etc.

Description

Auto-answering type telephone direct call unit

The utility model belongs to the telecommunication technology field.

Phone has brought convenience to the mankind, be the indispensable means of communication of modern society, but calling for the callee, what phone was answered usefulness is the tinkle of bells, in the ordinary course of things, mostly is the shared telephone set of several people, because the tinkle of bells right and wrong targetedly, it only tells people's missing, does not tell whom people look for, therefore, fail perfection, traditional method is to answer after the people asks clearly situation, the callee of oral call appointment, and indirect type promptly as referred to herein is called out, recently, developed a kind of radio-paging device, be characterized in that everyone carries a wireless receiver, its system complex, the cost height.

The purpose of this utility model is that design is a kind of cheap, reports callee's title or address automatically, is directly called callee's device by the calling party.

The utility model by ring delay circuit, language answering circuit, reply control circuit, call out control circuit, audio-amplifying circuit, six parts of automatic shutdown circuitry form.Its course of work is after the calling party puts through phone, and the ring several seconds is just reported calling party institute transfer slip position title, and please call out the callee, and promptly straight the calling specifies the callee to answer the call.Therefore, had automatic-answering back device easy to implement, the characteristics of direct calling.And shorten greatly and notify from a phone call the stand-by period, improved operating efficiency.

Below in conjunction with accompanying drawing the utility model is specifically described:

Fig. 1 is a circuit diagram.

Now be divided into six part explanations (this paper identification to be being called input IN with outer circuit link, with phone link be output OUT).

1, ring delay circuit, the AC signalling signal of calling party's incoming call is through C ₁Lotus root is closed, and by W ₁Dividing potential drop, D ₁R is passed through in rectification ₁To C ₂Charging, C after after a while ₂Power on to press and rise to BG ₁Saturated, a collector potential descends, and makes IC ₁(2) the pin current potential reduces, when reducing to 1/3EC, and IC ₁The set that is triggered, output (3) pin current potential raises, and makes BG ₂Saturated, J ₁Adhesive, ring finishes.W ₁R ₁C ₂Determine ring time, R ₁C ₂After selected, W ₁Can regulate.

2, language answering circuit is the answering circuit reduced graph in the frame of broken lines among the figure.K ₁For recording triggers, K ₂For playback triggers, LED ₂Be the recording indication.UM5101 is a model among the figure--the language integrated circuit of recording and playbacking of digital conversion type (ADM).There are eight mould/numbers (A/D) and D/A (D/A) converter in inside, and the microphone amplifier of recording usefulness and the driving amplifier that playback is used are arranged, and ADM decomposes and combiner circuit; The D/A counter, clock generator and control logic, refresh counter and dynamic memor, input/output interface.Language data after treatment, deposited in the outside random asccess memory (RAM), and bring in the capacity of decision RAM by selecting " the memory input is selected ", this machine is selected a MN4164P for use, can carry out the recording playback language or the sound of five seconds, after you record into needed language, trigger playback at every turn, can both begin at beginning of the sentence, end of the sentence finishes.

3, reply control circuit.IC ₁, BG ₂, J ₁And peripheral cell has been formed and has been replied control circuit.IC ₁Adopt the PA555 integrated circuit, after trigger end (2) pin is triggered by negative pulse, IC ₁Be set, the high potential of (3) pin output makes BG ₂Saturated, J ₁Adhesive is because J ₁-2 and K ₂And connect, so the language circuit promptly enters tone playing state, the audio signal of output is through B ₁Lotus root is closed, and passes through J ₁- ₁Normally opened contact (this moment is closed) and phone pipeline, the other side promptly hears and replys, inquires sound, IC ₁In SM set mode, inner discharge tube ends, and passes through W ₂To C ₃Charging, when upper limit comparator in-phase input end (6) pin voltage is increased to 2/3EC, IC ₁Reset.(3) pin promptly changes low level over to, and time-delay finishes, and J1 discharges, J ₁- ₁, J ₁- ₂Touch the position and disconnect, circuit changes call state over to from response status.Because the delayer that 555 time-base integrated circuits constitute has the precision height, characteristics such as working stability are regulated W ₂Can accurately adjust timing, make it to equal the playing time of language integrated circuit.

4, call out control circuit.Reply end of inquiry, the calling party must answer callee's name of being looked for, and therefore, circuit should change call state, IC over to immediately when replying end ₂, G ₃, J ₂And peripheral cell is formed delay circuit (principle is the same), J ₂2-2 normally opened contact closure during the adhesive has been connected the power supply of amplifier, J ₂-1 normally opened contact closes and makes amplifier when J discharges, and passes through J ₁-1 normally closed always touching connected external circuit, and the calling party can call out the callee by amplifier.

The Call Waiting time is adjusted W ₂Set (1--4 minute) LED ₁Red emission utmost point pipe is as work indication, lamp is bright be the indicating call device be in reply, the Call Waiting state, the lamp expression end-of-job that goes out.Be equivalent to on-hook.

5, audio-amplifying circuit, owing to call out to need certain volume, what have also needs external loudspeaker, and for this reason, this machine selects for use TDA2003 to amplify as moving rate, and this integrated circuit can obtain the audio power of 5W, R in the load of 4 Ω ₁₅Be load resistance, be equivalent to telephone bandset and mention, connect the wait of the key of admiring and notify from a phone call state.

6, automatic shutdown circuitry.During calling out, telephone set access failure circuit can't be conversed, if the callee arrives in advance, will wait for before phone then and could conversing after quitting work to calling set that this is inconvenience very.Being provided with of this circuit can be when the callee mentions mobile phone, automatically the work of device stops call, change normal conversation over to, here be the control characteristic of utilizing the strong reset terminal of 555 time-base circuits, 555 circuit MR end is the preferential reset terminal of R-S trigger, promptly puts initial state to trigger, as long as MR is 0, no matter R and S end is in what current potential, (3) pin output V ₀Be 0.Therefore, this machine is by BG4, BG ₅The control circuit of forming is to IC ₁, IC ₂Carry out autostop control.In the common-battery telephone system, when not hanging up, line input has the unloaded direct voltage of 24V, and anode passes through J ₁-1, J ₂-1 normally closed touching always is added to BG ₅Base stage, make BG ₅Emitter inverse and end BG ₅Collector electrode and BG ₄Base stage be electronegative potential, BG ₄End, current collection is high potential very, makes IC ₁, IC ₂MR end (4) pin keep high potential, promptly be in the normal state D ₄Access be in order to protect BG ₅Be knot be not reversed puncture.

During replying, calling out, because J ₁-1, J _2-1The disconnection of normally-closed contact, BG ₅Base stage do not have direct voltage, be in 0 the biasing, therefore, do not influence IC ₁, IC ₂Work.

The callee promptly arrives, and when mentioning mobile phone, has connected the telephone set key of admiring, and is equivalent to a little resistance resistance and is attempted by output, just BG ₅Base stage pass through R ₁₄Internal resistance has added forward bias with phone, makes BG ₅Saturated, collector potential rises, and causes BG ₄Collector voltage descend, the MR terminal voltage is 0, IC ₂Be forced to reset J ₁, J ₂Discharge, disconnected reply, call circuit, connected the phone circuit, realized automatic shutdown function.

External form, structure that this is novel can be wall hangings, can also be flat on the desktop.

Claims (6)

1, a kind of novel telephone caller is characterized in that:

One of 1-1 is used for receiving the device that calling party Hu makes Xin And amplify in setting-up time;

One of 1-2 is used for repaying Dan Weiming to the calling party after the ring several seconds and claims And it to directly call callee's automatic answering device;

One of 1-3 is used for when the callee arrives, the device that phone is returned to normal.

2, telephone caller according to claim 1, it is characterized in that receiving the calling party, to exhale the device that makes letter And amplify be that the contact of the relay by being called out control circuit control is connected with outer circuit, its audio-amplifying circuit is made up of integrated amplifier, and the volume that amplifies is adjustable continuously.

3, telephone caller according to claim 1 is characterized in that the contact of the relay of automatic-answering back device circuit by being replied control circuit control is connected with outer circuit.

4, telephone caller according to claim 1, circuit is connected when it is characterized in that the automatic-answering back device circuit postpones with ring, is a device that only just carries out automatic-answering back device after the other side calls the several seconds.

5, telephone caller according to claim 1 is characterized in that the automatic-answering back device circuit is made of very lagre scale integrated circuit (VLSIC) language processor and digital storage.

6, telephone caller according to claim 1, the device that circuit is returned to normal are to be closed the device that amplifies also paraphase and control the strong reset terminal realization autostop of 555 integrated circuits by the direct lotus root of NPN transistor by the letter And that PNP transistor detection of handset is mentioned.