JP2005295007A - Interphone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interphone system capable of easily recognizing the arrival of a call to a telephone set and making an external line speech with a unit other than the telephone set. <P>SOLUTION: The interphone system 1 is provided with: a speech means 6 including a speaker 8 and a microphone 9; an interphone master unit 2 connected to a public telephone line L1; the telephone set 4 connected to the interphone master unit 2 via an extension line L3; an external line incoming call detection means 20 for detecting an incoming call arriving to an external line; ringing means 11, 21 provided on the interphone master unit 2 and ringing an incoming tone when the external line incoming call detection means 20 detects the external line call; and connection means 24 capable of interconnecting the public telephone line L1 and the speech means 6 when the external line incoming call detection means 20 detects the external line call. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an interphone system in which a telephone connected to a public telephone line is connected to an interphone master.

There has been proposed a telephone / interphone device that can make a call from a telephone connected to an outside line (public telephone line) in response to a call from an interphone handset (see, for example, Patent Document 1). In addition, an interphone system that can perform a call between the interphone slave unit and the interphone master unit without holding or ending the external line call by the phone even if there is a call from the interphone slave unit during an external line call of the phone Has been proposed (see, for example, Patent Document 2). And in these prior arts, when an outside line is received, the internal bell of the telephone rings, thereby notifying the outside line.
Japanese Patent Laid-Open No. 10-243112 (page 3, FIG. 1) JP-A-9-153950 (page 7-8, FIG. 1)

  The interphone base unit is usually provided in the vicinity of the kitchen, and the telephone may be installed in a place away from the interphone base unit, such as in the living room, bedroom, or entrance of the entrance. And if the ringtone of the phone is low, it is difficult to hear the ringtone due to noise or sound from TV, and conversely, if the ringtone of the phone is high, the ringtone is pronounced near the phone. There is a problem that sometimes surprises me. Further, for example, when a telephone is installed on the second floor, there is a problem that it may be necessary to move to the second floor in response to a ring tone of the telephone.

  An object of the present invention is to provide an intercom system that can easily recognize an incoming call to a telephone and can make an outside line call other than the telephone.

  The interphone system according to the first aspect of the present invention includes an interphone master unit that includes a calling means having a speaker and a microphone, and is connected to an interphone slave unit via a telephone line and connected to a public telephone line; A telephone connected to the telephone via an extension and connected to a public telephone line; an external line incoming detection means for detecting an external incoming call provided in the interphone base unit; an external line incoming detection means provided in the interphone base unit; And a ringing means for ringing a ringtone when an incoming call is detected.

  In the present invention and the following inventions, each configuration is as follows unless otherwise specified.

  A telephone is normally connected to a public telephone line (outside line) via an interphone master. Therefore, even if the intercom base unit is not operating due to a power failure or the like, it is possible to make an outside line call and an outside line call at the telephone.

  The speaker that rings the ring tone of the ringing unit allows the speaker of the calling unit, but is preferably a speaker different from the speaker.

  According to the present invention, an incoming line ringing tone is sounded in the telephone and interphone master unit, and the incoming call to the telephone is easily recognized.

  An interphone system according to a second aspect of the present invention includes an interphone master unit that includes a calling unit having a speaker and a microphone, and to which an interphone slave unit is connected via a call line and is connected to a public telephone line; A connection unit that is connected to a public telephone line and can be connected to a telephone; an external line incoming detection unit that is provided in the interphone base unit and detects an external line incoming call; provided in the interphone base unit, And a ringing means for ringing a ring tone when the external line incoming call detecting means detects an external line incoming call.

  For example, the connection portion may be a modular jack that removably connects a telephone cord. In addition, it is possible to connect an extension wired in each room or living room.

  According to the present invention, in the telephone connected to the interphone base unit and the connection unit, the incoming line incoming ringing tone is sounded and the external line incoming call is easily recognized.

  An interphone system according to a third aspect of the present invention includes an interphone master unit that includes a calling unit having a speaker and a microphone, and to which an interphone slave unit is connected via a call line and is connected to a public telephone line; A telephone connected to the telephone via an extension and connected to a public telephone line; an external line incoming detection means for detecting an external incoming call provided in the interphone base unit; an external line incoming detection means provided in the interphone base unit; Ringing means for ringing a ring tone when an incoming call is detected; and connecting means for connecting the public telephone line to the calling means when the incoming call detection means detects an incoming call. It is characterized by.

  When the connecting means connects the public telephone line and the calling means of the intercom base unit, and the interphone base unit makes an external line call, it may be set to make an external line call from the telephone or not to make an external line call. In addition, when making an outside line call with a telephone, an outside line call may be made from the calling means of the interphone master unit or may not be made. That is, the public telephone line and the interphone base unit call means and telephone may or may not interfere with each other.

  According to the present invention, when there is an incoming call from an outside line, an outside line call can be made by the telephone or the call means of the intercom base unit.

  According to the first aspect of the present invention, the incoming call to the telephone is easily recognized as a result of the ringing tone of the incoming line from both the telephone and the interphone master. As a result, the telephone is placed away from the interphone master. It can be installed and the ringtone can be set low.

  According to the second aspect of the present invention, the incoming line ringing tone is sounded by both the intercom base unit and the telephone connected to the connecting unit, and the incoming incoming call is easily recognized. It can be installed at a location away from the intercom master unit, and the ringtone can be set low.

  According to the third aspect of the present invention, when an external line call is received, an external line call can be performed on the telephone or interphone main unit. Therefore, it is possible to move to a nearby telephone or interphone main unit in response to an external line call. it can.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic configuration diagram of an interphone system, FIG. 2 is a schematic circuit diagram of an interphone master unit, and FIG. 3 is a schematic configuration diagram of another interphone system. is there.

  In FIG. 1, the intercom system 1 includes an interphone master unit 2, an interphone slave unit 3, and a telephone 4.

  The intercom base unit 2 is connected to a telephone public line (outside line) L1, is connected to the intercom handset 3 through a telephone line (communication line) L2, and is further connected to a modular jack 5 through an extension line L3. A telephone 4 with a cord 4 a is connected to the modular jack 5. That is, the telephone 4 is connected to the intercom base unit 2 via the extension L3. In the intercom base unit 2, the telephone public line (external line) L1 and the internal line L3 are always connected, and the telephone 4 is always connected to the external line L1. Further, the intercom master unit 2 is provided with a modular jack 5A as a connection portion connected to a telephone public line (outside line) L1. The cord 4a of the telephone 4 can be detachably connected to the modular jack 5A. Further, the extension line L3 can be connected.

  The interphone master unit 2 is installed near the kitchen, for example, the interphone slave unit 3 is installed at the entrance, and the telephone 4 is installed in an arbitrary place such as a living room, a bedroom, near the entrance, or a room on the second floor.

  The intercom base unit 2 is formed in a handset 6 and a base unit main body 7 that constitute a communication means. The handset 6 is provided with a speaker 8 for generating sound and a microphone 9 for collecting sound, and circuit components and the like disposed on the substrate are housed in the main unit body 7. The main unit body 7 is provided with a hook switch 10 and a speaker 11 constituting a ringing means so as to face the surface. The hook switch 10 detects that the handset 6 has been removed from the main body 7. The speaker 11 emits a ringing tone from the intercom handset 3 or a ringing tone for incoming calls to the telephone 4.

  Further, the main unit body 7 is provided with a power supply monitor 12, an entrance monitor 13 and a telephone monitor 14 exposed on the surface, and further provided with a volume adjustment knob 15. The power supply monitor 12, the entrance monitor 13 and the telephone monitor 14 are each formed with a light emitting diode. Then, the power supply monitor 12 displays in green when the intercom base unit 2 is powered. The entrance monitor 13 is displayed in orange, blinks during a call from the intercom handset 3, and lights up during a call with the intercom handset 3. Further, the telephone monitor 14 is displayed in blue, blinks when an incoming call is received, and lights up during an external call. The volume adjustment knob 15 adjusts the volume of the ringing tone from the intercom handset 3 and the ringing tone of the incoming line to the telephone 4. In the figure, the volume increases when the volume adjustment knob 15 is moved to the right, and decreases when the volume adjustment knob 15 is moved to the left.

  The intern handset 3 is exposed on the surface, provided with a power supply monitor 16 and a call button 17, and provided with a microphone 18 and a speaker 19 so as to face the surface. The power supply monitor 16 displays in green when the intercom handset 3 is powered. When the call button 17 is pressed, a call sound signal is transmitted to the intercom base unit 2 via the call line L2, and a ring tone is generated from the speaker 11 of the interphone base unit 2. The microphone 18 collects the voice of the visitor, and the speaker 19 sounds the voice of the home person transmitted from the intercom base unit 2 via the call line L2. A call between a visitor and a person at home is performed between the microphone 18 and the speaker 19 and the microphone 9 and the speaker 8 of the handset 6 of the interphone master unit 2.

  The telephone 4 is a household telephone that is generally commercially available, and is detachably connected to the modular jack 5. Further, it can be detachably connected to the modular jack 5A of the intercom base unit 2.

  FIG. 2 shows a schematic circuit configuration of the intercom base unit 2. The interphone master unit 2 includes an external line incoming detection circuit 20 as an external line incoming detection means, a speaker 11 as a ringing means, a speaker circuit 21 and a control circuit 22, a telephone connection circuit 23 as a connection means, a first switch circuit 24, and both It is formed with a direction amplifier circuit 25, a call circuit 26 as a call means, a microphone 9, and a speaker 10.

  The public telephone line (outer line) L1 and the extension line L3 are connected to the telephone connection circuit 23. The telephone connection circuit 23 always connects the external line L1 and the internal line L3 so that the telephone 4 can perform external line transmission and external line reception. The telephone connection circuit 23 is connected to the control circuit 22 and is configured to operate the first switch circuit 24 under the control of the control circuit 22 and connect the external line L1 to the bidirectional amplifier circuit 25. Yes.

  The external line L1 is connected to an external line detection circuit 20 that detects an external line. The external line incoming detection circuit 20 is connected to the control circuit 22, and sends an external line incoming detection signal to the control circuit 22. The extension L3 is connected to a first hook detection circuit 27 that detects the hook state of the telephone 4 by a loop current. The detection of the hook state is input from the first hook detection circuit 27 to the control circuit 22. Further, a modular jack 5A as a connecting portion is connected to the external line L1.

  The telephone line L2 is connected to the intercom connection circuit 28. The intercom connection circuit 28 is connected to the control circuit 22. The intercom connection circuit 28 is configured to detect a call from the interphone slave unit 3 and operate the second switch circuit 29 under the control of the control circuit 22 to connect the extension L2 to the bidirectional amplifier circuit 25. ing.

  The bidirectional amplifier circuit 25 is connected to the telephone connection circuit 23 via the first switch circuit 24, connected to the interphone connection circuit 28 via the second switch circuit 29, and further connected to the call circuit 26. At the same time, it is connected to the control circuit 22 and is configured to amplify signals transmitted in both directions under the control of the control circuit 22.

  The call circuit 26 is connected to the microphone 9 and the speaker 8 of the handset 6, converts the sound collected by the microphone 9 into an audio signal, and transmits the interphone slave unit 3 or the external line via the bidirectional amplifier circuit 25 or the like. The voice signal of the voice collected by the microphone 18 of the interphone handset 3 or the voice signal from the external line L1 is converted to a signal generated by the speaker 8 and transmitted to the speaker 8. ing. The microphone 9 collects the voice of the person who is talking with the handset 6, and the speaker 8 generates the voice of the visitor who operated the interphone handset 3 and the voice of the outside line partner.

  The control circuit 22 is connected to a second hook detection circuit 30 that detects that the handset 6 is detached from the main body 7 by the hook switch 10.

  A speaker circuit 21 is connected to the control circuit 22. The speaker circuit 21 is controlled by the control circuit 22, and when a call signal is transmitted to the interphone connection circuit 28 by pressing the call button of the intercom handset 3, the speaker 11 generates a ringing sound (ping-pong). Further, when the outside line incoming call detection circuit 20 detects an outside line incoming call, it causes the speaker 11 to ring. And according to operation of the volume adjustment knob 15, it is comprised so that the volume of a ringing tone or a ringtone may be changed.

  Further, the control circuit 22 connects a light emitting diode 31 for entrance monitoring and a light emitting diode 32 for telephone monitor. The control circuit 22 controls the light emitting diode 31 to blink during calling from the interphone slave unit 3 and to light up during a call with the interphone slave unit 3. Further, the light emitting diode 32 is controlled to blink while receiving an outside line and to be lit during an outside line call.

  The intercom base unit 2 is provided with a power supply circuit 33. The power supply circuit 33 is connected to a commercial AC power supply Vs, converts an AC voltage into a predetermined DC voltage, and supplies it to each circuit unit such as the control circuit 22. The power supply circuit 33 is connected to a light-emitting diode 34 for power supply monitoring, and the light-emitting diode 34 is turned on to indicate that the intern base unit 2 is in power supply.

  The control circuit 22 is configured to receive various control signals and control each circuit unit in accordance with the control signals.

  Next, the basic operation of one embodiment of the present invention will be described with reference to FIG.

  First, the case where there is an outside line incoming call will be described.

  When there is an incoming call on the external line L 1, the incoming signal is transmitted to the internal line L 3 via the telephone connection circuit 23 and input to the telephone 4. Then, the internal bell of the telephone 4 rings. In addition, an outside line incoming call detection circuit 20 detects an outside line incoming call, and a detection signal is input to the control circuit 22. The control circuit 22 controls the speaker circuit 21 to generate a ringing tone (sound) from the speaker 11 and causes the light emitting diode 32 of the telephone monitor 14 to blink. Therefore, when an outside line is received, the ring tone is sounded at the two places of the telephone 4 and the intercom master unit 2, so that it is easy to hear the ring tone. For example, even if the intercom base unit 2 is installed on the first floor and the telephone 4 is installed on the second floor, it is possible to suppress the missed incoming call sound.

  Then, when picking up the handset of the telephone 4, the first hook detection circuit 24 detects that the telephone 4 has been off-hooked, and inputs the detection to the control circuit 22. The control circuit 22 controls the speaker circuit 21 to stop sounding (sounding) a ringtone from the speaker 11 and turns on the light emitting diode 32 of the telephone monitor 14. The telephone 4 can make an outside line call.

  When the handset 6 of the interphone master unit 2 is detached from the master unit body 7, the second hook detection circuit 30 detects the removal and inputs a detection signal to the control circuit 22. The control circuit 22 controls the speaker circuit 21 to stop the sounding (ringing) of the ringtone by the speaker 11 and controls the telephone connection circuit 23 to operate (turn on) the first switch circuit 24. As a result, the call circuit 26 is connected to the external line L1 via the bidirectional amplifier circuit 25, the first switch circuit 24, and the telephone connection circuit 23, and an external line call can be performed with the handset 6 of the intercom base unit 2. Then, the control circuit 22 turns on the light emitting diode 32 of the telephone monitor 14.

  Then, when the outside line call is finished and the handset of the telephone 4 is set, the first hook detection circuit 27 detects that the telephone 4 is on-hooked, and inputs the detection to the control circuit 22. The control circuit 22 turns off the light emitting diode 32 of the telephone monitor 14. When the handset 6 of the interphone master unit 2 is set in the master unit body 7, the second hook detection circuit 30 detects the set and outputs a detection signal to the control circuit 22. The control circuit 22 turns off the light emitting diode 32 of the telephone monitor 14.

  As described above, an outside line call can be made from either the telephone 4 or the intercom base unit 2 for an outside line incoming call. Therefore, when there is an incoming line call, it is possible to move to a place closer to the telephone 4 or the intercom base unit 2 to make an external line call. For example, when the intercom base unit 2 is installed on the first floor and the telephone 4 is installed on the second floor, moving to the second floor is avoided when a ringing incoming line is heard on the first floor.

  Next, a case where there is a call from the intercom handset 3 during an external line call on the interphone base unit 2 will be described.

  During an external line call with the intercom base unit 2, a speech path is formed by the microphone 9 and the speaker 8 of the handset 6, the call circuit 26, the bidirectional amplifier circuit 25, the first switch circuit 24, the telephone connection circuit 23 and the external line L 1. Yes.

  When the call button 17 of the intercom handset 3 is pressed and a call signal is input to the interphone connection circuit 28 via the communication line L2, the control circuit 22 does not send the call signal to the speaker circuit 21, and the speaker 11 so as not to generate a ringing tone. Then, the control circuit 22 causes the light emitting diode 31 of the entrance monitor 13 to blink. A person at home who is on the outside line with the handset 6 can recognize the visitor by visually checking the blinking of the entrance monitor 13. When the control circuit 22 is left for a predetermined period, for example, 30 seconds, the control circuit 22 resets the interphone connection circuit 28 to cancel the call from the interphone slave unit 3 and turns off the light emitting diode 31 from blinking.

  When an outside line call is interrupted during a call from the intercom handset 3 and a call is made with a visitor, the hook switch 10 of the main unit body 7 is turned on for a short time. This on-hook is detected by the second hook detection circuit 30, and a detection signal is input to the control circuit 22. The control circuit 22 controls the telephone connection circuit 23 to stop the operation of the first switch circuit 24 and cut off the communication path between the call circuit 26 and the external line L1. At this time, the light emitting diode 32 of the telephone monitor 14 is controlled to blink. Then, the control circuit 22 controls the interphone connection circuit 28 to operate (turn on) the second switch circuit 29 and turn on the light emitting diode 31 of the entrance monitor 13. Thus, a speech path is formed by the microphone 9 and the speaker 8 of the handset 6, the speech circuit 26, the bidirectional amplifier circuit 25, the second switch circuit 29, the interphone connection circuit 28, the speech line L2, and the interphone slave unit 3. Therefore, a call (interphone call) between the intercom handset 3 and the interphone base unit 2 by a visitor and a person at home can be performed.

  When an outside line call is made again, the hook switch 10 of the main unit body 7 is on-hooked for a short time. This on-hook is detected by the second hook detection circuit 30, and a detection signal is input to the control circuit 22. The control circuit 22 controls the intercom connection circuit 28 to stop the operation of the second switch circuit 29, shuts off the communication path between the call circuit 26 and the call line L2, and turns off the light emitting diode 31 of the entrance monitor 13. Let Then, the control circuit 22 controls the telephone connection circuit 23 to operate (turn on) the first switch circuit 24 and turn on the light emitting diode 32 of the telephone monitor 14 from blinking. As a result, the microphone 9 and the speaker 8 of the handset 6, the call circuit 26, the bidirectional amplifier circuit 25, the first switch circuit 24, the telephone connection circuit 23, and the external line L 1 form a communication path, and the interphone master unit 2 again performs You can make a call.

  Next, a case where there is an outside line call during an interphone call between the interphone master unit 2 and the interphone slave unit 3 will be described.

  During the interphone call by the interphone master unit 2, the microphone 9 and speaker 8 of the handset 6, the call circuit 26, the bidirectional amplifier circuit 25, the second switch circuit 29, the interphone connection circuit 28, the call line L 2 and the interphone slave unit 3 are used. A communication path is formed.

  When an incoming call is received, an incoming signal is input to the telephone 4 via the telephone connection circuit 23 and the extension L3, and the internal bell of the telephone 4 rings. In addition, an outside line incoming call detection circuit 20 detects an outside line incoming call, and a detection signal is input to the control circuit 22. At this time, the control circuit 22 controls the light emitting diode 32 of the telephone monitor 14 to blink, but does not control the speaker circuit 21 and does not sound (sound) a ringtone from the speaker 11. A person at home who is intercom talking with the handset 6 can recognize an incoming incoming call by visually checking the blinking of the telephone monitor 14. During the incoming call, the internal bell of the telephone 4 continues to ring and the light emitting diode 32 of the telephone monitor 14 continues to blink.

  When the intercom call is finished and the interphone master unit 2 performs an external line call, the handset 6 is set in the main unit body 7 for a few seconds, or the hook switch 10 is turned on for a few seconds, and the handset 6 is connected again. Remove from the machine body 7. Thereafter, as described above, the interphone master unit 2 can perform an outside line call.

  Then, when another resident picks up the handset of the telephone 4 during the intercom call of the resident, the first hook detection circuit 27 detects that the telephone 4 is off-hooked and outputs the detection to the control circuit 22. . The control circuit 22 turns on the light emitting diode 32 of the telephone monitor 14 from blinking. Then, an outside line call on the telephone 4 can be performed by another person at home.

  Further, during an intercom call, when the intercom call is interrupted and an external call is made, the hook switch 10 of the main unit body 7 is turned on hook for a short time. This on-hook is detected by the second hook detection circuit 30, and a detection signal is input to the control circuit 22. The control circuit 22 controls the intercom connection circuit 28 to stop the operation of the second switch circuit 29 and cut off the communication path between the call circuit 26 and the call line L2. At this time, the light emitting diode 31 of the entrance monitor 13 is controlled to blink. Then, the control circuit 22 controls the telephone connection circuit 23 to operate (turn on) the first switch circuit 24 and turn on the light emitting diode 32 of the telephone monitor 14 from blinking. As a result, the microphone 9 and the speaker 8 of the handset 6, the call circuit 26, the bidirectional amplifier circuit 25, the first switch circuit 24, the telephone connection circuit 23 and the external line L <b> 1 form a communication path, and the interphone master unit 2 performs an external line call. can do.

  Then, when the outside line call is finished and the intercom call is made again, the hook switch 10 of the main unit 7 is turned on for a short time. This on-hook is detected by the second hook detection circuit 30, and a detection signal is input to the control circuit 22. The control circuit 22 controls the telephone connection circuit 23 to stop the operation of the first switch circuit 24, shuts off the communication path between the call circuit 26 and the external line L1, and turns off the light emitting diode 32 of the telephone monitor 14. . Further, the interphone connection circuit 28 is controlled to operate (turn on) the second switch circuit 29, and the light emitting diode 31 of the entrance monitor 13 is turned on from blinking. As a result, a speech path is formed by the microphone 9 and the speaker 8 of the handset 6, the speech circuit 26, the bidirectional amplifier circuit 25, the second switch circuit 29, the interphone connection circuit 28, the speech line L2, and the interphone slave unit 3, and again. Intercom calls can be made.

  Note that the telephone 4 can be used by being connected to a modular jack 5A provided in the intercom base unit 2, as shown in FIG.

The schematic block diagram of the intercom system which shows one embodiment of this invention. Similarly, the schematic circuit diagram of an intercom main unit. Similarly, the schematic block diagram of another intercom system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Interphone system 2 ... Interphone main | base station 4 ... Telephone 5A ... Modular jack 11 as a connection part ... Speaker 20 as a ringing means ... External line incoming detection circuit 21 as an external line incoming detection means ... Speaker circuit 24 as a ringing means ... Connection First switch circuit as means

Claims (3)

An interphone master unit having a calling means having a speaker and a microphone, to which an interphone slave unit is connected via a call line and connected to a public telephone line;
A telephone connected to the intercom base unit via an extension and connected to a public telephone line;
An outside line incoming call detecting means provided in the intercom base unit for detecting an incoming line incoming call;
A ringing means provided in the intercom base unit, for ringing a ring tone when the external line incoming call detecting means detects an external line incoming call;
An intercom system characterized by comprising: An interphone master unit having a calling means having a speaker and a microphone, to which an interphone slave unit is connected via a call line and connected to a public telephone line;
A connection unit provided in the intercom base unit, connected to a public telephone line and capable of connecting a telephone;
An outside line incoming call detecting means provided in the intercom base unit for detecting an incoming line incoming call;
A ringing means provided in the intercom base unit, for ringing a ring tone when the external line incoming call detecting means detects an external line incoming call;
An intercom system characterized by comprising: An interphone master unit having a calling means having a speaker and a microphone, to which an interphone slave unit is connected via a call line and connected to a public telephone line;
A telephone connected to the intercom base unit via an extension and connected to a public telephone line;
An outside line incoming call detecting means provided in the intercom base unit for detecting an incoming line incoming call;
A ringing means provided in the intercom base unit, for ringing a ring tone when the external line incoming call detecting means detects an external line incoming call;
A connection means capable of connecting the public telephone line and the call means when the outside line incoming call detecting means detects an incoming line incoming call;
An intercom system characterized by comprising:

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