CN1071968C - Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position - Google Patents
Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position Download PDFInfo
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- CN1071968C CN1071968C CN97100033A CN97100033A CN1071968C CN 1071968 C CN1071968 C CN 1071968C CN 97100033 A CN97100033 A CN 97100033A CN 97100033 A CN97100033 A CN 97100033A CN 1071968 C CN1071968 C CN 1071968C
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- busy tone
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Abstract
The present invention relates to a telephone device with which the line can not be busy for a long time though an earpiece is not placed well. The present invention comprises a telephone line interface circuit, a ringing detector, a hybrid circuit, a two-tone complex frequency generator, a controller, a keyboard, a switch, a busy tone detector, a busy tone indicator, a busy tone disability button and an earpiece, wherein the controller can control the telephone line interface circuit to perform an automatic off-switching function; the busy tone detector is used for detecting busy tone; when busy tone exists over a preset period of time, a signal is sent to the controller so that the telephone line interface circuit is automatically switched off; when busy tone is discovered, the busy tone indicator indicates that a user's telephone is in the state of busy tone; the busy tone disability button can cancel the busy tone automatic off-switching function; the earpiece is used for receiving voice.
Description
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.
Please refer to Fig. 1, the schematic configuration of existing digital electric phone shown in the figure, existing digital electric phone comprises: a telephone line interface circuit 10, be used for as the interface of loop wire (ring) with end line (tip) and internal circuit, and including a dislodging machine switch, the may command telephone set is off-hook (off-hook) or on-hook (on-hook); One ringing detector 12 is used to detect bell signal; One hybrid circuit 16 is used for the link with aforementioned telephone line interface circuit is divided into sound input end and output; One dual-tone multi-frequency generator 18, that is a dialing IC are used to produce touch-tone signal; One keyboard 22 is used for input control signal or digital signal to aforementioned dual-tone multi-frequency generator 18; One switch 24 is subjected to the control of aforementioned dual-tone multi-frequency generator, when the dual-tone multi-frequency generator outputting dual tone multi-frequency signal, promptly cuts off the voice signal from telephone receiver; And a receiver 26, comprise a receiver, for example earphone, an and transmitter, for example microphone is used for 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 on-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.Other direction, 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 extraneous send warning signal to phone, send higher-frequency and high-power sound reminds the user to note by phone by telephone operator.
In view of this,, telephone set is unlikely to because of human negligence does not hang up properly receiver, and causes that the line is busy for a long time 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.
The present invention proposes a kind of can not putting well and cause the telephone apparatus that the line is busy for a long time, comprising because of receiver:
One telephone line interface circuit is used for the interface as loop wire and end line and internal circuit, and aforementioned telephone line interface circuit comprises: an off-hook load elements is used for providing the off-hook load when line; One dislodging machine switch, being used to control telephone set is line or broken string; Reach one and force broken string door bolt button relay;
One hybrid circuit is used for the link with aforementioned telephone line interface circuit is divided into sound input end and output;
One receiver is used for the sending and receiving speech;
It is characterized in that the two ends of described pressure broken string door bolt button relay are connected with above-mentioned off-hook load elements and dislodging machine switch respectively, are used to force telephone set to break, and can be via the action of on-hook again with the switch connection of relay;
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 is used to detect busy tone, and when busy tone continues to surpass one section preset time, sends a signal and give controller, so as to making the aforementioned telephone line interface circuit of controller drives, makes its automatic broken string.
Described telephone apparatus 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; With 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 dislodging machine switch up to receiver.
Aforementioned telephone line interface circuit also comprises: a protective circuit is used to avoid cause the damage of internal circuit because of the outside line overtension; One bridge rectifier is used for converting outside bipolar signal to unipolar signal, handles in order to internal circuit.
Aforementioned pressure broken string latching relay comprises: a coil is used 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 is subjected to the drive and the effect that is subjected to an external force of switch, changeable arbitrary stable state in two kinds of different stable states, and under the effect of no external force, can be used for making switch keeping in this stable state; Put button more one, accept pressing of manual or other mechanical actions, so that provide aforementioned breech lock reed to switch the required external force of different stable states; And a fixed mount, be used for fixing aforementioned coil, switch and breech lock reed, magnetic loop is provided simultaneously, make the stronger electromagnetic attraction of generation.
Put influence that button can be subjected to the dislodging machine switch of aforementioned telephone line interface circuit aforementioned more, when dislodging machine switch changes hook state into by off hook state, can press the aforementioned button of putting jointly more.
Below in conjunction with description of drawings preferred embodiment of the present invention, so that more clearly illustrate structure of the present invention, characteristics and advantage, wherein:
Fig. 1 is the schematic diagram of the structure of existing telephone apparatus;
Fig. 2 does not cause the telephone apparatus block diagram that the line is busy for a long time for of the present invention can not putting well because of receiver;
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 the latching relay structural representation that is applied among the present invention.
Please refer to Fig. 2, of the present invention can not putting well because of receiver causes the telephone apparatus that the line is busy for a long time to comprise: a telephone line interface circuit 40 is used for the interface as loop wire and end line and internal circuit; One ringing detector 12 is used to detect bell signal; One hybrid circuit 16 is used for the link with aforementioned telephone line interface circuit 40 is divided into sound input end and output; One dual-tone multi-frequency generator 18 is used to produce touch-tone signal; One controller 30, may command telephone line interface circuit 40 is carried out automatic disconnection function; One keyboard 22 is used for input control signal or digital signal to aforementioned dual-tone multi-frequency generator 18, so that represented the button pressed by double-audio signal; One switch 24 is subjected to the control of aforementioned dual-tone multi-frequency generator, when the dual-tone multi-frequency generator outputting dual tone multi-frequency signal, promptly cuts off the voice signal from telephone receiver; One busy tone (busy tone) detector 32 is used to detect busy tone, and when busy tone continues to surpass one period of being scheduled to, sends a signal and give controller, makes the aforementioned telephone line interface circuit 40 of controller drives thus, 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 used for controlling aforementioned controller, with the automatic disconnection function of cancellation busy tone; And a receiver 26, comprise a receiver, for example earphone, an and transmitter, for example microphone is used for the sending and receiving speech.
Please refer to Fig. 3 a and Fig. 3 b, the structure that is applied to an embodiment of the telephone line interface circuit among the present invention comprises: a protective circuit 50 is used to avoid cause the damage of internal circuit because of the outside line overtension; One bridge rectifier 52 is used for converting outside bipolar signal to unipolar signal, handles in order to internal circuit; One off-hook load elements 54 is used for providing when the machine of inserting and plugs in the machine load; One dislodging machine switch 56 is used to control telephone set and is off-hook (off-hook) or (connects machine, on-hook); One forces broken string latching relay 58, is used to force the telephone set broken string, and can be via the action of on-hook again with the switch connection of relay.
Please refer to Fig. 4 a and Fig. 4 b, the structure of the pressure broken string latching relay that uses in the present invention comprises: a coil 60 is used 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, can make switch 62 be maintained at this stable state; Put button 66 more one, accept pressing of manual or other mechanical actions.To provide aforementioned breech lock reed 64 to switch the required external force of different stable states; And a fixed mount 68, be used for fixing aforementioned coil 60, switch 62 and breech lock reed 64, magnetic loop is provided simultaneously, make 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, circuit of the present invention still can normally operate.
During enforcement, aforementioned dual-tone multi-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 dislodging machine switch 56 and latching relay 58 is series connection, so the line is busy for phone whether, be whether to be that on-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 on-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 on-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 the receiver on-hook, dislodging machine switch 56 drives to be forced to put button 66 on the broken string latching relays 58 more, 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 on-hook of receiver or off-hook again.
If the user wants to avoid bothering of phone by 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 again during on-hook, the cancellation busy tone order of broken string automatically is eliminated immediately, if when receiver is not put back to again, the automatic disconnection function of busy tone still can the generation effect then.
Claims (6)
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 used for the interface as loop wire and end line and internal circuit, and aforementioned telephone line interface circuit comprises: an off-hook load elements is used for providing the off-hook load when line; One dislodging machine switch, being used to control telephone set is line or broken string; Reach one and force broken string door bolt button relay;
One hybrid circuit is used for the link with aforementioned telephone line interface circuit is divided into sound input end and output;
One receiver is used for the sending and receiving speech;
It is characterized in that the two ends of described pressure broken string door bolt button relay are connected with above-mentioned off-hook load elements and dislodging machine switch respectively, are used to force telephone set to break, and can be via the action of on-hook again with the switch connection of relay;
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 is used to detect busy tone, and when busy tone continues to surpass one section preset time, sends a signal and give controller, so as to 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 dislodging machine switch up to receiver.
4. as claim 1,2 or 3 described telephone apparatus, it is characterized in that aforementioned telephone line interface circuit also comprises: a protective circuit is used to avoid cause the damage of internal circuit because of the outside line overtension; One bridge rectifier is used for converting outside bipolar signal to unipolar signal, handles in order to internal circuit.
5. telephone apparatus as claimed in claim 1 is characterized in that, aforementioned pressure broken string latching relay comprises: a coil is used 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 is subjected to the drive and the effect that is subjected to an external force of switch, changeable arbitrary stable state in two kinds of different stable states, and under the effect of no external force, can be used for making switch keeping in this stable state; Put button more one, accept pressing of manual or other mechanical actions, so that provide aforementioned breech lock reed to switch the required external force of different stable states; And a fixed mount, be used for fixing aforementioned coil, switch and breech lock reed, magnetic loop is provided simultaneously, make the stronger electromagnetic attraction of generation.
6. telephone apparatus as claimed in claim 5, it is characterized in that, put influence that button can be subjected to the dislodging machine switch of aforementioned telephone line interface circuit aforementioned more, when dislodging machine switch changes hook state into by off hook state, can press the aforementioned button of putting jointly more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100033A CN1071968C (en) | 1997-03-03 | 1997-03-03 | Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100033A CN1071968C (en) | 1997-03-03 | 1997-03-03 | Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1192619A CN1192619A (en) | 1998-09-09 |
| CN1071968C true CN1071968C (en) | 2001-09-26 |
Family
ID=5164729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97100033A Expired - Lifetime CN1071968C (en) | 1997-03-03 | 1997-03-03 | Device for telephone set to prevent it is of 'busy' due to ear-phone not in right position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071968C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998271A (en) * | 1989-08-28 | 1991-03-05 | Venture Technologies, Inc. | Telephone accessory |
| US5479501A (en) * | 1991-06-05 | 1995-12-26 | Rolm Systems | Far-end disconnect detector for telephony systems |
-
1997
- 1997-03-03 CN CN97100033A patent/CN1071968C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998271A (en) * | 1989-08-28 | 1991-03-05 | Venture Technologies, Inc. | Telephone accessory |
| US5479501A (en) * | 1991-06-05 | 1995-12-26 | Rolm Systems | Far-end disconnect detector for telephony systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1192619A (en) | 1998-09-09 |
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Granted publication date: 20010926 |
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| CX01 | Expiry of patent term |