CN1192619A

CN1192619A - Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position

Info

Publication number: CN1192619A
Application number: CN 97100033
Authority: CN
Inventors: 黄拔忠
Original assignee: Winbond Electronics Corp
Current assignee: Winbond Electronics Corp
Priority date: 1997-03-03
Filing date: 1997-03-03
Publication date: 1998-09-09
Anticipated expiration: 2017-03-03
Also published as: CN1071968C

Abstract

A telephone apparatus consists of telephone wire interface circuit, ringing detector, hybrid circuit, dual-tone complex frequency generator, controllerwhich can control the telephone wire interface circuit and excute auto-break function, keyboard, switch, busy tone detector which is used for delecting busy tone and sending a signal to the controller to make the interface circuit break automatically when busy tone continously exceeds the fixed time, busy tone indicator which indicates the telephone is in busy tone state to user as soon as busy tone is detected, busy tone incapability button which can cancel the busy tone auto-break function, telephone receiver which is used for receiving and delivering speech.

Description

Can not put well and cause the telephone apparatus that the line is busy for a long time because of receiver

The present invention relates to a kind of telephone apparatus, particularly relate to a kind of can not putting well and cause the telephone apparatus that the line is busy for a long time because of receiver.

See also Fig. 1, the summary framework of existing digital electric phone shown in the figure, existing digital electric phone comprises: a telephone line interface circuit 10, in order to interface as loop wire (ring) and end line (tip) and internal circuit, and include a hook switch, the may command telephone set be line (off-hook, off-hook) or the broken string (hook, on-hook); One ringing detector 12 is in order to detect bell signal; One hybrid circuit 16 will be in order to will be divided into sound input end and output with the link of aforementioned telephone line interface circuit; One dual-tone complex frequency generator 18, that is a dialing IC are in order to produce the dual-tone complex frequency signal; One keyboard 22, in order to input control signal or digital signal to aforementioned dual-tone complex frequency generator 18; One switch 24 is subjected to the control of aforementioned dual-tone complex frequency generator, when dual-tone complex frequency generator output dual-tone complex frequency signal, promptly cuts off the voice signal from telephone receiver; And a receiver 26, comprise a receiver, earphone for example, and a transmitter, microphone for example is in order to the sending and receiving speech.

In the aforementioned telephone set that generally uses, generally all be to utilize receiver (handset) to decide, telephone set is to be in the off-hook or the state of hook, but as long as receiver is picked up, no matter then just in use whether telephone set, since equal off-hooks, thus must be that the line is busy, and cause the external world can't dial in phone.Especially receiver does not pay particular attention to the user under the situation of whether putting well, and regular meeting makes phone, and the line is busy for a long time.On the other hand, because telephone set in this case, can't initiatively send warning signal, the user often can not notice yet.Must wait until that the user will re-use phone, or the extraneous telephone operator that sees through sends warning signal to phone, send higher-frequency and high-power sound reminds the user to note by phone.

In view of this,, make telephone set be unlikely to receiver not to be hung up properly, and cause that the line is busy for a long time because of human negligence in order to improve shortcoming of the prior art.

Purpose of the present invention promptly is to provide a kind of telephone apparatus, and it can not put well because of receiver and causes that the line is busy for a long time.

Whether the present invention mainly utilizes the integrated circuit that can recognize sound, when phone is off-hook, have the busy tone (busy tone) of switch to exist on the detection line.If busy tone occurs, phone can be reminded the user automatically, if the user ignores the busy tone prompting, then after one section Preset Time, telephone set will break (on-hook) automatically, even this moment, receiver was not put back to, as long as there is outside line to dial in, phone equally can send ring back tone.The user takes up and listens as long as receiver is put back to, and can receive calls.

The present invention provides a button simultaneously, and the user, as long as pick up a receiver and pushes button if want that refusing phone through picking up a receiver bothers, and can cancel the present invention's function, and continuing to keep phone is the state that the line is busy, till receiver is put back to.

With regard to conjunction with figs. preferred embodiment of the present invention is described below, uses framework, characteristics and the advantage of more clearly illustrating the present invention, wherein:

Fig. 1 is the schematic diagram of the framework of existing telephone apparatus;

Fig. 2 does not cause the telephone apparatus block diagram that the line is busy for a long time for can not putting well because of receiver of the present invention;

Fig. 3 a and Fig. 3 b are the circuit diagram that is applied to the telephone line interface circuit among the present invention; And

Fig. 4 a and Fig. 4 b are for being applied to the latching relay configuration diagram among the present invention.

See also Fig. 2, can not putting well because of receiver of the present invention causes the telephone apparatus that the line is busy for a long time to comprise: a telephone line interface circuit 40, in order to interface as loop wire and end line and internal circuit; One ringing detector 12 is in order to detect bell signal; One hybrid circuit 16 will be in order to will be divided into sound input end and output with the link of aforementioned telephone line interface circuit 40; One dual-tone complex frequency generator 18 is in order to produce the dual-tone complex frequency signal; One controller 30, may command telephone line interface circuit 40 is carried out automatic disconnection function; One keyboard 22, in order to input control signal or digital signal to aforementioned dual-tone complex frequency generator 18, use by dual-tone complex frequency signal indication institute by button; One switch 24 is subjected to the control of aforementioned dual-tone complex frequency generator, when dual-tone complex frequency generator output dual-tone complex frequency signal, promptly cuts off the voice signal from telephone receiver; One busy tone (busy tone) detector 32 in order to the detection busy tone, and when busy tone continues to surpass one period of being scheduled to, is sent a signal and is given controller, uses making the aforementioned telephone line interface circuit 40 of controller drives, makes its automatic broken string; One busy tone indicating device 34 when busy tone detector 32 detects busy tone, promptly indicates user's phone to be in the busy tone state; One busy tone anergy button 36 can be in order to control aforementioned controller, with the automatic disconnection function of cancellation busy tone; And a receiver 26, comprise a receiver, earphone for example, and a transmitter, microphone for example is in order to the sending and receiving speech.

See also Fig. 3 a and Fig. 3 b, the framework that is applied to one of the telephone line interface circuit embodiment among the present invention comprises: a protective circuit 50, in order to avoid causing the damage of internal circuit because of the outside line overtension; One bridge rectifier 52 in order to convert outside bipolar signal to unipolar signal, is handled in order to internal circuit; One off-hook load elements 54 is in order to provide the off-hook load when the line; One hook switch 56, in order to control telephone set be line (off-hook, off-hook) or the broken string (hook, on-hook); One forces broken string latching relay 58, in order to forcing the telephone set broken string, and can be via the action of hook again with the switch connection of relay.

See also Fig. 4 a and Fig. 4 b, the framework of the pressure broken string latching relay that uses in the present invention comprises: a coil 60, in order to produce magnetic attraction; One switch 62 is subjected to the Magnetic force tracting of aforementioned coil 60, and the common ground of moving switch 62 is with the on-state of alteration switch 62; One breech lock reed 64 is subjected to the drive and the effect that is subjected to an external force of switch 62, changeable arbitrary stable state in two kinds of different stable states, and under the effect of no external force, available so that switch 62 is maintained at this stable state; One puts button 66 again, accept manually or the pressing of other mechanical actions, use provide aforementioned breech lock reed 64 switch different stable states required outside power: an and fixed mount 68, in order to fixing aforementioned coil 60, switch 62 and breech lock reed 64, magnetic loop is provided simultaneously, makes the stronger electromagnetic attraction of generation.

Aforementioned busy tone indicating device 34 can optionally be provided with, and even without busy tone indicating device 34, the present invention's circuit still can normally operate.

During enforcement, aforementioned dual-tone complex frequency generator 18 and controller 30 can be the W91080 that winbond electronics company produces, and aforementioned busy tone detector 32 is to be positioned at the W62401 inside that winbond electronics company produces.

The regular phone machine is under normal condition, no matter in whether being to use, force the broken string latching relay all to be in the state shown in Fig. 3 a (that is shown in Fig. 4 a), wherein, load resistance 54, the switch of hook switch 56 and latching relay 58 is series connection, so phone the line is busy whether, be whether to be that hook decides fully by receiver, but when receiver is picked up and do not put through, or receiver is not put well behind the end of conversation, and switch all can be sent busy tone and give phone, after busy tone is detected by the busy tone detector 32 among Fig. 2, can give controller 30 and busy tone indicating device 34 with signal, this moment busy tone indicating device 34 can to demonstrate phone be the state that is in busy tone.And after through one section preset time, controller can send the signal of broken string and give the latching relay 58 of the pressure broken string in the telephone line interface circuit 40.Force switch 62 on the broken string latching relay 58 just can become broken string state shown in Fig. 3 b (that is as Fig. 4 b state) at once, make telephone set be in the state of hook.At this moment, the electric power that is provided by telephone wire has not been provided the internal circuit of telephone set, force the coil 60 on the broken string latching relay 58 just to lose electric current, and because the stable state effect of breech lock reed 64 can make telephone set remain on the state of hook always yet.As for the requirement to power supply then is must guarantee when controller 30 sends disconnection signal, forces the coil of broken string latching relay 58 to make breech lock reed 64 switch to the state shown in Fig. 4 b really.

Then, when receiver is linked up with, hook switch 56 drives forces answering on the broken string latching relay 58 to put button 66, to force the switch 62 on the broken string latching relay 58 to be connected simultaneously, promptly shown in Fig. 4 a, just revert to normally the line whether state that decides phone by the action of the hook of receiver or off-hook again.

If the user wants to avoid bothering of phone through picking up a receiver, as long as after picking up a receiver, before the action that busy tone breaks automatically, press busy tone anergy (disable) button 36, controller promptly stops to detect busy tone and sends disconnection signal.So, force the switch in the broken string latching relay just can not attracted for opening circuit, that is phone can remain on the state of off-hook always by coil.When receiver was linked up with again, the cancellation busy tone order of broken string automatically was eliminated immediately, and when not put back to again as if receiver then, the automatic disconnection function of busy tone still can the generation effect.

Claims

1. can not put well and cause the telephone apparatus that the line is busy for a long time for one kind, comprising because of receiver:

One telephone line interface circuit is in order to the interface as loop wire and end line and internal circuit;

One ringing detector is in order to detect bell signal;

One hybrid circuit will be in order to will be divided into sound input end and output with the link of aforementioned telephone line interface circuit;

One dual-tone complex frequency generator is in order to produce the dual-tone complex frequency signal;

One keyboard, in order to input control signal or digital signal to aforementioned dual-tone complex frequency generator, use by dual-tone complex frequency signal indication institute by button;

One switch is subjected to the control of aforementioned dual-tone complex frequency generator, when dual-tone complex frequency generator output dual-tone complex frequency signal, promptly cuts off the voice signal from telephone receiver;

One receiver is in order to the sending and receiving speech;

It is characterized in that this telephone apparatus also comprises:

One controller, the may command telephone line interface circuit is carried out automatic disconnection function; And

One busy tone detector in order to the detection busy tone, and when busy tone continues to surpass one period of being scheduled to, is sent a signal and is given controller, uses making the aforementioned telephone line interface circuit of controller drives, makes its automatic broken string.

2. telephone apparatus as claimed in claim 1 is characterized in that it also comprises: a busy tone indicating device, and when the busy tone detector detects busy tone, promptly indicate user's phone to be in the busy tone state.

3. telephone apparatus as claimed in claim 1 is characterized in that it also comprises: a busy tone anergy button, it is pressed before broken string action after receiver is picked up automatically, can cancel the busy tone function of broken string automatically, is put back to hook switch up to receiver.

4. as claim 1,2 or 3 described telephone apparatus, it is characterized in that aforementioned telephone line interface circuit comprises: a protective circuit, in order to avoid causing the damage of internal circuit because of the outside line overtension; One bridge rectifier in order to convert outside bipolar signal to unipolar signal, is handled in order to internal circuit; One off-hook load elements is in order to provide the off-hook load when the line; One hook switch is line or broken string in order to the control telephone set; One forces the broken string latching relay, in order to forcing the telephone set broken string, and can be via the action of hook again with the switch connection of relay.

5. telephone apparatus as claimed in claim 4 is characterized in that, aforementioned pressure broken string latching relay comprises: a coil, in order to produce magnetic attraction; One switch is subjected to the Magnetic force tracting of aforementioned coil, and the common ground of moving switch is with the on-state of alteration switch; One breech lock reed, drive that is subjected to switch and the effect that is subjected to an external force, changeable arbitrary stable state in two kinds of different stable states, and under the effect of no external force, available so that switch keeping is in this stable state; One puts button again, accepts manually or the pressing of other mechanical actions, use provide aforementioned breech lock reed switch different stable states required outside power; And a fixed mount, in order to fixing aforementioned coil, switch and breech lock reed, provide magnetic loop simultaneously, make the stronger electromagnetic attraction of generation.

6. telephone apparatus as claimed in claim 5 is characterized in that, aforementionedly puts the influence that button can be subjected to the hook switch of aforementioned telephone line interface circuit again, when hook switch changes the hook state into by off-hook condition, can press the aforementioned button of putting again jointly.