JPH0397393A - Home telephone system - Google Patents

Abstract

PURPOSE:To enable to confirm a function even if no telephone set is provided by transmitting the information of an extension call, etc., and a signal for display from a home telephone master machine to an information unit through a control line so as to execute informing and displaying operation at the information unit. CONSTITUTION:When the handset of the telephone set C connected to some information unit B is raised, a hook.DP detection circuit detects off-hook, and outputs a detection signal to a control circuit 11. The control circuit 11 controls a display control circuit 18 so as to output a voltage signal to light the light emitting display part La for the indication of line wires busy at each information unit B, and lights the light emitting display part La. The home telephone master machine A is provided with the function of the information unit B and the function of a telephone set C on the market unitedly. Accordingly, in the case of the confirmation of the function at the time of installation, the telephone set C need not be specially provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a home telephone system that uses a commercially available telephone as a handset.

[Journey's technology] One type of this type of home telephone system is the home simple telephone exchange system. This in-home simple telephone exchange system includes a disconnector G and a protector H, as shown in FIG.
Telephone exchange A connected to telephone office E via external line l,
And this telephone exchange fiA has internal fR. b and control #i1,
It is composed of a plurality of notification units B, which are connected to each other and to which commercially available telephones C are detachably connected, and the telephone exchange A switches the communication path between the outside line L and extension line L2 or the inside line M12. Then, send # to notification unit B. It is now possible to make external calls and internal calls using the connected telephone Iso C. In this home simple telephone exchange system, door phone D is connected to telephone exchange A via telephone line e, and telephone C can also be used to make door phone calls.

Each notification unit B is provided with a mozzier jack M, through which a general commercially available telephone jack M can be detachably connected. In addition, this notification signal B is sent via a speaker SP for reproducing notification signals such as an extension ring tone or a door phone ring signal sent via the control line 13, and the control line l. A light-emitting display section L a, which distinguishes a display signal which is a voltage signal and indicates whether an internal call is in progress or an outside call is in progress;
Lb, and these speakers SP and light emitting indicators La and Lb perform notification and display operations. Incidentally, the volume of the speaker SP can be adjusted using a volume setting switch ■S''Chll!.

[Problem to be solved by the invention] However, in this simple in-house telephone exchange system, the telephone exchange fiA itself has only an exchange function and does not have a telephone function, so it is difficult to confirm Ison's performance when this system is installed. There was a problem that telephone C was required separately.

The present invention has been made in view of the above-mentioned points, and its purpose is to provide a home telephone system that allows function confirmation even without a telephone set.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a home telephone base unit having a telephone function connected to a central office via an outside line, and a home telephone base unit having an extension line and a control line connected to the home telephone base unit. It is composed of a plurality of notification units each connected to a commercially available telephone set in a detachable manner, and the home telephone base unit can switch and form a communication path between an outside line or an extension line, between an outside line and an extension line, or between extension lines. In this way, external calls and extension calls can be made using the home telephone aS and the above-mentioned commercially available telephones, and the home telephone main unit performs notification and display operations such as extension calls, etc., and the home telephone main unit performs extension calling etc. to the notification unit via the control line. The system sends notification and display signals to cause the notification unit to perform notification and display operations.

In addition, in order to be able to connect it with the home automation unit with good appearance, the external size t of the water-based telephone main unit may be shaped to be the same size as the size of the home automation unit.

In addition, when a home telephone base unit is equipped with the on-hook dialing function of a commercially available telephone, one speaker is shared between on-hook dialing and notification of extension calls, etc., in order to reduce the size and increase of costs. It's okay.

In addition, when sharing speakers in this way,
Since one signal may have an adverse effect such as leaking into the other circuit, in order to prevent this, the signal for on-hook dialing and the signal for notification of extension calls, etc.
and fII12 of each transformer through the transformer
Input the next winding to the bridge circuit with FIt precept element, 1
The above speaker is connected to the secondary winding of the third transformer whose next winding is a component of the above-mentioned Brifuji circuit, and the signal command due to one signal is transmitted to the younger brother 1 or the second transformer to which the other signal is input. It is preferable to set a constant value for the bridge circuit so that this does not occur in the primary winding of the transformer. Further, even if a signal for on-hook dialing and a signal for notification such as an extension call are outputted to the speaker via the buffer 777, the adverse effects of both signals can be prevented.

1 Effect 1 The present invention is configured as described above, so that the home telephone main unit integrates the notification unit and the telephone into the telephone exchange of the simple in-home telephone exchange system, so that the home telephone can be used even without a telephone. This allows functionality to be checked using only the base unit.

[LOL Example 1 An embodiment of the present invention is shown in FIGS. 1 to 7.

First, the circuit configuration and operation of the exchange function of the home telephone A of the present invention will be explained. Note that this switching function is exactly the same as that of telephone exchange A' in the simple home telephone exchange system of the United States.

As shown in FIG. 7, the exchange function section of the home telephone main unit A is the telephone cfJt! +J for each extension e2 connected to Ik
Re-contact r+~r, 7tsuku・DP (dial pulse)
Detection circuits 21-2 and communication current supply circuits 4, -? 3, an incoming call detection circuit 5 that detects an incoming call from outside #X e +, a DC connection circuit 3 that connects outside #a i +, and a DP generation circuit that generates DP for making an outside line call. 6. PB (push button) P for dialing
B caller 7, outside line dial tone detection circuit 8 for detecting outside line dial tone, hold tone sending circuit 9 for sending hold tone, cross point switch 10 for setting call route, PB receiver 1 for receiving PB signal of AC coupling path. 2, 1 3. Control circuit 1 configured with diode Purino DB, dates 61 to G, and a CPU"Ch that performs control information signal transmission control and signal judgment processing for each of the above circuits and the circuits described later.
1.

In addition, this home telephone Oyatsuki A allows calls to be made by opening the telephone C and two door intercoms D, and for this reason, a door intercom call detection circuit 14 142 is installed to detect a call from the door intercom D. and a doorphone call circuit 15. Furthermore, this home telephone main unit A can also be connected to a security device and an emergency push button, so that if a security signal is input or the emergency push button is pressed, each telephone IfIIC is connected. In order to emit a notification sound from the notification unit B, it is provided with a security signal detection circuit 16, a sound generation circuit 17 that generates various notification sounds, and amplifiers AMP, -AMP. In addition, unit B notifies the outside line call and internal call status.
'c is provided with a display control circuit 18.

The operation of this telephone exchange device will be explained. In this home telephone FIA, when the power is turned on and the system starts, the control circuit 11 consisting of a one-chip microcomputer performs initial settings, and then enters a standby state.
Determination of O7 hook, determination of presence/absence of incoming call and processing of outside line call, determination of presence/absence of door phone call and processing of door phone call, determination of presence/absence of extension call, processing of extension call, and processing of outgoing call, etc. I do.

Now, when the handset of telephone C connected to one of the notification terminals B is raised, the hook/DP detection circuit 2 detects the O7 hook and outputs a detection signal to the control circuit 11. Note that in the above state, the relay contacts ",", "," are switched to the cross point switch 10gA. At this time, the control circuit 11 turns on a predetermined switch of the cross point switch 10 and transmits data 4 0 0 through G3.
A pseudo transmission signal of Hz is sent to this notification unit B through the cross point switch 10 and the inner AL2. At the same time, the control circuit 11 controls the display control circuit 18 to output a voltage signal for lighting the light-emitting display section La for indicating that an outside line is busy in each notification 22B, thereby lighting the light-emitting display section La. At this time, the light-emitting display section L[l for indicating that the extension line is busy is controlled to be turned off.

This transmission continues until the dial signal is input, and when the first dial signal is detected by the hook/DP detection circuit 2,
The control circuit 11 stops outputting the pseudo call signal and stores the dial data in the built-in battery 7T memory. Then activate the built-in 3 second timer. If the 28th dial signal is detected while this timer is operating, it is determined that an outside line call has been made.

If the second dial signal is not input within these 3 seconds, it is determined that the call is an extension call, and the extension call processing is performed.

Now, in the case of an outside call, the pad 77 stores sequentially input dial signal data in the memory and outputs a signal for operating the DC connection circuit 3. The line is closed by this DC connection circuit 3, the outside line dial tone is detected by the outside line dial tone detection circuit 8, and the detection signal is sent to the control circuit 11.
, the control circuit 11 sequentially reads out the dial data stored in the pad 7T memory starting from the first dial data, operates the dial pulse generating circuit 6, and sequentially sends dial signals to the outside line e. At the same time, the data of subsequent dial signals input from telephone C is stored in the PATSU memory. In this way, at the same time as the dial signal is sent to the outside #i I, the dial data from the telephone Iso B is sent to the puff 77.
Store in memory, x 7T When the dial data stored in memory runs out, ff! Once the time has elapsed, the next call will proceed to an outside line. Please note that the dial signal is set to M1.
1, the line connection is interrupted. after that,
For outside calls, connect transformer T cross point switch 1
0, via extension h.

Next, the operation when calling an extension will be explained. First, the first dial signal is input from the telephone C connected to the notification unit B, and after the pseudo call signal is output, if the next dial signal is not input within 3 seconds, the input dial Determining that the data is an extension number, the control circuit 11 turns on the predetermined switch of the cross point switch 10 that is turned on from the O7 hook. - and then disconnects the outside #i e + and turns on another predetermined switch so as to set a call path to the extension e2. Then, the light-emitting display section La of each notification unit B that was lit from the O7 hook is turned off, and at the same time, the display control circuit 18 outputs a voltage signal that lights the light-emitting display section Lb indicating that the extension line is busy, and the light-emitting display is turned off. Turn on section Lb. Furthermore, the control circuit 11 includes the sound generation circuit 1
7 to output a notification signal for calling an extension. This notification signal is transmitted through another switch of the crosspoint switch 10 to the control line l,
Is it superimposed on and sent out? . Notification unit B, which receives the message via the control system AM, emits an extension ring tone from speaker SPJ. When the handset of telephone C connected to this notification unit B is picked up by this ringing, the hook D
The P detection circuit 2 detects this O7 hook and the control circuit 11
sends a detection signal to ! The 1761 circuit 11 stops the generation of the audio signal based on this O7 hook, turns on the other switches of the cross point switch 10, and calls Is l 2 of the notification unit B that made the call.
and #Il■ of the called side's notification unit }B are connected to establish a telephone conversation state.

After that, an extension call will be made.

Incoming outside calls are explained below. First, when an incoming call signal is input from outside M/, the incoming call detection circuit 5 detects this incoming call signal and outputs an incoming call detection signal to the control circuit 11. When the control circuit 11 receives this incoming call detection signal,
Switch the relay contact r to the outside 4st e I side. Therefore, the telephone C connected to each notification unit B has extension l2.
The built-in bell will ring in each 'iIL handset C. When the handset of the telephone C connected to a certain notification unit B is raised due to this ringing, this off-hook state is detected by the 7-hook/DP detection circuit 2, and the control circuit 11 is activated by the DC connection circuit 3 based on this detection output. 777 turn on, switch the relay contact r to the cross point switch 10 @, and at the same time switch the cross point switch 10 to connect the external line 11 and the connected telephone CI: extension 1 of the connected notification unit B.
2 to enable outside calls.

Now, if you want to make an extension call or make a doorbell call during the above-mentioned outside call, you can put the call on hold. In this case, a dial signal corresponding to the hold operation is input from the telephone C that is making an outside line call, and the control circuit 11 reads this dial data and determines that it is a hold operation.
e z and outside line 1. Performs hold processing to release the call path. Then, by operating the held tone sending circuit 9, the held tone melody signal is sent to the external line e1 via the coupling transformer T, and at the same time, by switching the cross point switch 10,
AMP cross point switch 10, amplifier A
It is sent to each control line l through M P + to AMPj.

Further, under the control of the control circuit 11, a voltage signal from the display control circuit 18 that simultaneously lights up the light emitting display sections La and Lb is controlled. Each notification unit via l y}B
and lights up the light emitting display sections La and Lb. In other words, the other party's phone If via the outside line/, by the hold melody signal.
! Inform the IC that you are on hold, and at the same time call each phone
A hold melody sound is emitted from the speaker SP of the notification unit B connected to the unit to notify the user that the call is on hold, and at the same time, the light-emitting indicators gL a and L b are lit simultaneously to notify the user that the call is on hold. indicate. Here, if the user wishes to make an extension call after being put on hold, a dial signal for the extension call is input from the telephone set C, and the extension call becomes possible in accordance with the above-described extension processing operation. Further, when a doorphone call is to be made, a dial signal for the doorphone call is input from the telephone set C. Note that this doorphone call processing will be described later.

After the hold, when the telephone C goes on-hook, the extension call etc. is terminated, and the control circuit 11 shifts to the calling operation.
When the telephone line C is hooked up to 7, the control circuit 11 stops the operation of the hold tone generating section 9, and controls each section to return to the original outside line call state, making it possible to make an outside line call. Then, when the call after the hold is released and the telephone 81C is put on hook again, the DC connection by the DC connection section 3 is released under the control of the control circuit 11, and the outside line call ends.

Next, a case where there is a doorbell call will be explained. When making a call from door phone D, a push button provided on door phone D is pressed. When this push button is pressed, the door intercom call detection circuit 14 outputs a signal to the control circuit 11 indicating that there has been an impedance change. Based on the output, the control circuit 11 determines that the call is from the door phone D, operates the sound generation circuit 17, and switches the crosspoint switch 10 in a predetermined manner to send a ringing tone to each notification unit B. 22} Make a ringtone sound from the speaker SP of B.

And the family member who heard the ringing called one of the phones?
j! When the handset of C is picked up, a signal indicating that the handset is hooked to the notification unit B is sent from the DP detection circuit 2 to the control circuit 11, and the control circuit 11 detects the cross point. By switching the switch 10, the telephone C to which the handset is hooked is connected to the doorphone communication circuit 15, and
A switch element S provided between the door phone D and the door phone call circuit 15 is turned on to enable the door phone call.

The above was an explanation of the exchange function part of home telephone main unit A, but this home telephone main unit A! In addition to the above functions, A also has the functions of the notification unit B explained in the example below, and the 491 function of the commercially available telephone C. For this reason, please call 8! to confirm functionality after construction. There is no need to provide C. Moreover, the American telephone exchange A' did not have a telephone function, so it was difficult to install it in a living room, etc., but this home telephone main unit A is a telephone W.
Since it is equipped with an IM function, it can be installed in a living room etc. without any problems, making it relatively easy to secure a place for installation. By the way, as shown in Figures # & 2, the external dimensions of the home telephone parent fiA are the same size as the module dimensions of the home automation unit I, such as a monitor TV unit, a telecontroller monitor unit γ}, and an i-unit. Then, it becomes possible to connect these units with each other, which improves the design.

By the way, it is also possible for the home telephone host A to have the on-hook dialing function that a commercially available telephone*C has, but in this case, the home telephone host fiA can be equipped with the on-hook dialing function that a commercially available telephone with the on-hook dialing function has. It becomes necessary to install a speaker and a speaker for notifications such as extension calls, which was provided in the notification unit of the simple home telephone exchange system in Japan. However, if both speakers are installed, the shape of the home telephone main unit A must be enlarged to accommodate both speakers.
Moreover, providing two speakers increases costs.

Therefore, in order to solve the above problem, it is conceivable to share both of the above speakers. This home telephone parent 1f
Figure 3 shows the appearance of iA. However, in this case,
Signals generated during on-hook dialing from the telephone function section may leak to the exchange function section, or conversely, the signals generated during on-hook dialing may be transmitted from the exchange function section to the slave control s! There is a possibility that the extension ringing tone, doorphone ringing tone, etc. output to l3 may leak to the telephone function section and have an adverse effect on each of them.

In order to prevent this, the circuit shown in FIG. 4 can be used to prevent the adverse effects of each signal. In other words, in FIG. 4, a signal for on-hook dialing output from the network IC 20 of the telephone switching function section and a signal for notification of an extension call, etc. output from the switching function section are respectively set at tI.
It is inputted via IJ1 and the second transformers T, , T2 to a bridge circuit 21 whose constituent elements are the secondary windings of the respective transformers T , , T 2 , and the primary windings are connected to the bridge circuit 2 .
The above speaker S P 2 is connected to the secondary winding of the third transformer T2, which is a component of the first transformer T2, and the signal command by one signal is transmitted to @1 or the second transformer where the other signal is input. It is sufficient to set constants for the bridging circuit 21 so as not to damage the primary windings of T, , T2. More specifically, a transformer T having intermediate taps on each of the primary and secondary windings is used, and the speaker output of the network IC 20 is connected to the transformer T. The intermediate potential output of network rc20 is connected to both ends of the primary winding of transformer T, and the intermediate potential output of network rc20 is connected to the intermediate tap of this transformer T.
The secondary winding is connected to both ends of the secondary winding of the transformer T1 via the resistor R1, and the secondary winding of the transformer T2 is connected to the intermediate tap of the secondary winding of the transformer T, and the primary winding of the transformer T. It is connected between the connection point of the wire and the resistor R.

Now, the signals caused by on-hook dialing (for example, the outside line tone when on-hook dialing is performed, the dial tone when dialing is input, the ringing tone when the other party is calling, the voice when the other party answers, etc.) are output from the network IC 20. At this time, as shown in FIG. 5(a), the transformer T
An electromotive force is generated at both ends of the secondary winding 2 as shown by the arrows,
This electromotive force causes transformer T2 to move as shown by the arrow in the figure.
Currents in different directions flow through the secondary windings. Therefore, if the constant is set to balance the bridge circuit 21, no current will flow to the secondary winding of the transformer T2 at this time, so that the signal from the ON 77 dial will not leak to the primary side of the transformer T2. can.

Furthermore, when an extension ring or a doorbell ring is output from the exchange function section, the electromotive force shown in Figure 5(b) is generated in the secondary winding of the transformer T2, and the current shown by the thin arrow in the figure is generated. flows through the bridge circuit 21, and if the constants of the bridge circuit 21 are set so that the currents at this time are equal, the electromotive force is canceled out when the primary opening of the transformer T, and therefore the primary side of the transformer T Signals such as extension calls will not be leaked.

By the way, as another method for preventing the above-mentioned signal leakage, as shown in FIG. Alternatively, the signal may be input.

In this case, both signals will be output via the buffer amplifier (in addition, signals such as extension ringing will be output via the amplifier AMP of the exchange function section, and this amplifier will function as the buffer amplifier 77). ., ), thus preventing signal leakage. Note that the output of the packer amplifier 22 is applied to the speaker SP2 via the differential amplifier circuit 23 and the drive circuit 24.

[Effects of the Invention 1] As described above, the present invention includes a home telephone main unit having a telephone function connected to a central office via an outside line, and a commercially available telephone connected to the home telephone main unit by an extension line and a control line, respectively. It is composed of a plurality of removably connected notification units, and the home telephone a is used to switch and form communication paths between external lines or internal lines, or between external lines and internal lines, or between internal lines, thereby making external and internal calls possible. The home telephone Oyaiso and the above-mentioned commercially available telephones can perform notification and display operations such as extension calls, etc. from the home telephone Oyaiso, and the notification and display of extension calls etc. from the home telephone Oyaiso to the notification unit via the control line. Since the notification unit performs the notification and display operations, the home telephone main unit becomes the telephone exchange of the in-home simple telephone exchange system with the notification unit and telephone set integrated into it, and therefore the telephone Even without one, you can check the functionality using just the home telephone base unit.

In addition, if the external dimensions of the above-mentioned home telephone main body are made to be the same size as the module dimensions of the home automation unit, it can be connected to the home automation unit, which improves the design. ? When a hook dialing function is installed in a home telephone station, if one speaker is shared for on-hook dialing and for notifying extension calls, etc., it is possible to suppress an increase in size and cost.

In this case, the signal for on-hook dialing and the signal for notification of extension calls etc. are sent to the secondary @ line of each transformer via the first and second transformers, respectively.
．． The above speaker is connected to the secondary winding of the third transformer whose primary winding is the pre-gamma circuit which is the component of the pre-gamma circuit, and the signal pre-gamma signal by one signal is If the constants of the bridge circuit described above are set so as not to occur in the primary winding of the @1 or second transformer where the other signal is input, there will be an adverse effect such as one signal leaking to the other circuit. It can be prevented.

Further, even if the on-hook dialing signal and the notification signal for extension calling, etc. are outputted to the speaker through buffer amplifiers, the adverse effects of both signals can be prevented.

[Brief explanation of drawings]

Fig. 1 is a system NII diagram of an embodiment of the present invention;
The figure is an explanatory diagram showing the above unit connected to a home automation unit, Figure 3 is a perspective view showing the external appearance of the home telephone main unit equipped with an on-hook dial function, and Figure 4 is a speaker. An explanatory diagram showing a circuit that prevents signal leakage when shared, $5 Figures (a) and t (b) are explanatory diagrams of the same operation as above, and Fig. 6 is an explanatory diagram showing a circuit that prevents other signals from leaking. , FIG. 7 is a system configuration diagram of the home simple telephone exchange system, and FIG. 8 is a circuit diagram of the telephone exchange. A is the home telephone main unit, B is the notification unit, C is the telephone, E is the telephone office, l is the outside line, l2 is the extension line, l is the control line, 21 is the Pritsuno circuit, 22 is the battery 77 amp, AM
P is an amplifier, T, -T, are transformers, and SP2 is a speaker.

Claims (5)

[Claims] (1) A home telephone main unit with a telephone function connected to a central office via an outside line, and a plurality of notification units connected to the home telephone main unit via extension lines and control lines, to which commercially available telephones can be detachably connected. The above-mentioned home telephone main unit can switch and form communication paths between external lines or internal lines, or between external lines and internal lines, or between internal lines, and external and internal calls can be made using the home telephone main unit and the above-mentioned commercially available telephones. Then, the home telephone base unit performs notification and display operations for extension calls, etc., and the home telephone base unit sends notification and display signals for extension calls, etc. to the notification unit via the control line, and the notification unit performs notification and display operations. A home telephone system that allows you to do the following. (2) The home telephone system according to claim 1, wherein the external dimensions of the home telephone main unit are the same as the dimensions of the module of the home automation unit. (3) Claim 1 in which the on-hook dialing function of a commercially available telephone is provided in a home telephone base unit, and one speaker is shared for on-hook dialing and for notifying extension calls, etc.
Home telephone system as described. (4) A signal for on-hook dialing and a signal for notification of extension calls, etc. are inputted via the first and second transformers, respectively, to a bridge circuit whose components are the secondary windings of the respective transformers. , the speaker is connected to the secondary winding of a third transformer whose primary winding is a component of the bridge circuit, and the signal component due to one signal is transmitted to the first or second transformer into which the other signal is input. 4. The home telephone system according to claim 3, wherein the bridge circuit has a constant constant set so as not to occur on the primary side of the transformer. (5) The home telephone system according to claim 3, wherein a signal for on-hook dialing and a signal for notification of an extension call, etc. are outputted to the speaker via a buffer amplifier, respectively.