JP2000151821A - Interphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a visitor to introduce oneself before a speech by a call reply is established by allowing the system automatically to reply a call from the visitor. SOLUTION: When a visitor depresses a call switch 10 of an entrance slave set 1, a call detection circuit 21 of an indoor interphone master set 2 detects it and a loudspeaker 23 sounds a call tone and a reply message S10 to urge the visitor to introduce oneself is sounded from a slave set speaker 12 from a slave set microphone 11 by means of plural synthesized voice signals stored in advance in a voice synthesis circuit 27. When a resident does not hook up a handset 24 within a prescribed time of a timer 28 that counts a time of a call state and detected by the call detection circuit 21, a speech end message S11 that urges the visitor to return is read from plural synthesized voice signals stored in advance in the voice synthesis circuit and sounded from the slave set speaker.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intercom apparatus, and more particularly, to an intercom apparatus having a function of automatically answering a call from a visitor and giving the visitor a name before establishing a call by answering the call.

[0002]

2. Description of the Related Art Conventionally, as this kind of intercom apparatus, an intercom apparatus having a configuration shown in a block diagram of FIG. 2 has been proposed. The intercom apparatus shown in the figure includes a call switch 60, a handset microphone 61, a handset speaker 62,
An entrance slave unit 51 provided with a slave unit hybrid circuit 63 and installed at an entrance of a dwelling unit (hereinafter, referred to as a dwelling unit entrance), a control circuit (hereinafter, referred to as a CPU) 70, a call detection circuit 71, a call sound generation circuit 72, Loudspeaker 73, parent device microphone 74a
And a receiver 74b, a handset 74, a hook switch 75, a power supply circuit 76, a base unit hybrid circuit 77, and an indoor intercom base unit 5 installed in a dwelling unit.
The main unit 51 and the main unit 52 are connected by a main line L51 including a signal transmission line and a power supply line.

In the intercom apparatus configured as described above, when a visitor pushes the call switch 60 of the entrance slave unit 51 installed at the entrance of a dwelling unit to call a resident of the dwelling unit, a call signal S51 is sent to the trunk line L51. Is transmitted to the call detection circuit 71 of the indoor intercom master unit 52 via The call detection circuit 71, to which the call signal S51 has been input, outputs to the CPU 70 a call detection signal S52 which has detected a call from a visitor at the dwelling unit. The CPU 70, to which the call detection signal S52 has been input, shifts from the standby state to the call state and activates the ring sound generation circuit 72. The activated ringing tone generation circuit 72 outputs a ringing tone signal S53 for sounding the loudspeaker 73. As a result, a ringing tone is emitted from the loudspeaker 73, and a resident in the dwelling unit is notified of a call from a visitor at the dwelling unit entrance.

When a resident who confirms a call from a visitor at the dwelling unit by a ringing sound emitted from the loudspeaker 73 picks up the handset 74 for answering the call, the hook switch 75 is turned off and this is detected. Done C
The PU 70 is shifted from the above-mentioned calling state to a talking state based on the calling response, and activates the power supply circuit 76. The activated power supply circuit 76 supplies power to activate the master hybrid circuit 77 and the slave hybrid circuit 63 of the entrance slave unit 51, respectively. Thereby, the handset 74 used by the resident in the dwelling unit, and the base unit hybrid circuit 77, the trunk line L51, and the slave unit hybrid circuit 63, between the slave unit microphone 61 and the slave unit speaker 62 used by the visitor of the dwelling unit. A communication path is formed, and voice signals can be transmitted and received via the communication path, and a call is established. Also, when the hook switch 75 is turned on after the end of the call, the CPU 70 that has detected this is restored from the call state to the standby state.

[0005]

However, since the conventional intercom apparatus is configured as described above,
The resident in the dwelling unit can confirm the call from the visitor at the dwelling unit by the ringing sound, but cannot determine exactly who the visitor is until the call is established by answering the call. As a result, when the resident in the dwelling unit is a child, a woman, an elderly person, or the like, there is a problem that the security and convenience at the time of calling and answering are hindered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and automatically calls a call from a visitor at a dwelling unit to give the visitor a name to call the resident in the dwelling unit. It is an object of the present invention to provide an intercom apparatus capable of improving security and convenience during a response.

[0007]

In order to achieve such an object, an intercom apparatus according to the present invention transmits a call signal by a visitor operating a call switch at an entrance slave unit, and calls the indoor intercom master unit. The detection circuit detects the call, activates the ringing tone generation circuit, emits a ringing tone from the loudspeaker to recognize the call, and sets the handset of the slave unit microphone and slave unit speaker of the entrance slave unit and the indoor intercom master unit. An intercom base unit for making a call with the telephone, wherein the indoor intercom master unit transmits a response message for automatically responding to a call from a visitor when a call signal is detected, and a time from when the call signal is detected. When the handset of the indoor intercom master unit is not hooked off within a predetermined time, a call termination message is sent from the voice synthesis circuit. It is obtained by a timer for delivering.

According to such an intercom apparatus, when the visitor at the entrance of the dwelling unit depresses the call switch of the entrance unit to call the resident in the dwelling unit, the call detection circuit of the main unit of the indoor intercom detects this. A ringing tone is emitted from the loudspeaker, and a response message prompting the visitor to input his / her own name via the child device microphone is read out from a plurality of synthesized voices stored in advance in the voice synthesis circuit, and the child device is read. Sound is emitted from the speaker. Also, if the handset is not picked up by the resident within a predetermined time of a timer in which the time of the call state detected by the above-described call detection circuit is counted, a plurality of synthesized voices stored in the voice synthesis circuit in advance are used. The call end message prompting the visitor to return is read out and emitted from the slave unit speaker. Thereby, crime prevention and convenience at the time of calling response of the called resident in the dwelling unit are improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment to which an intercom apparatus according to the present invention is applied will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of an intercom apparatus according to the present invention. The intercom apparatus includes an entrance slave unit 1 installed at a dwelling unit entrance and an indoor intercom master unit 2 installed at a dwelling unit. The slave unit 1 and the indoor intercom master unit 2 are connected by a main line L1 including a signal transmission line and a power supply line.

The entrance slave unit 1 includes a call switch 10 depressed by a visitor performing a call operation, a slave unit microphone 11 used to establish a call with a resident in the dwelling unit called by the visitor, and a child unit microphone 11. A slave speaker 12 and a slave unit microphone 11 and a slave unit hybrid circuit 13 for amplifying various signals (audio signals, messages, etc.) transmitted and received between the slave unit speaker 12 and the main line L1 are provided. Call switch 1
0, slave unit microphone 11 via slave unit hybrid circuit 13
And the slave unit speaker 12 are connected to the main line L1.

The indoor intercom master unit 2 has a CPU 20
And a call detection circuit 21 for detecting a call signal transmitted through the trunk line L1 when the call switch 10 of the entrance cordless handset 1 is depressed, and a call from a visitor is detected and a transition is made from a standby state to a call state. A ring tone generating circuit 22 that is activated under the control of the CPU 20 and outputs a ring tone signal; a ring tone for notifying a call from a visitor based on the ring tone signal output from the ring tone generating circuit 22; A loudspeaker 23 that emits a voice (voice signal) such as a visitor's name input through the slave unit microphone 11 of the mobile device 1, and a resident makes a call to communicate with a visitor at the dwelling unit entrance. A handset 24 including a base unit microphone 24a and a receiver 24b used for establishing
Hook switch 25 which is turned on / off depending on the presence or absence of picking-up of No. 4, and CPU shifted from the standby state to the calling state
Automatic response to the visitor via the power supply circuit 26 activated under the control of the control unit 20 and the slave unit speaker 12 of the entrance slave unit 1;
A voice synthesis circuit 27 in which a plurality of synthesized voices such as "Who are you?" And "Thank you."
And a timer 28 for counting the time of the call state detected (transitioned to), and various signals (voice signals, voice signals,
And a master hybrid circuit 29 for amplifying the message. A call detection circuit 2 is connected to the trunk line L1.
1 and the master hybrid circuit 29 are connected to each other.
, The output side of the ringing tone generation circuit 22, the loudspeaker 23, the handset 24, the output side of the power supply circuit 26,
And the output side of the voice synthesis circuit 27 are connected to each other. Further, a call detection circuit 21 is provided on the input side of the CPU 20.
The output contact of the hook switch 25 whose switching contact is connected to the reference potential point has a make contact, and the control input of the ringing tone generation circuit 22, the power supply circuit 26, and the voice synthesis circuit 27 are on the output side. Is connected to a timer 28. The output side of the power supply circuit 26 is
7 are connected.

The operation of the intercom apparatus configured as described above will be described below. When the visitor pushes the call switch 10 of the entrance slave unit 1 installed at the entrance of the dwelling unit to call a resident of the dwelling unit, a call signal S1 is sent to the call detection circuit 21 of the indoor intercom master unit 2 via the trunk line L1. Is transmitted to The call detection circuit 21, to which the call signal S1 has been input, outputs to the CPU 20 a call detection signal S2 which has detected a call from a visitor at the dwelling unit. The CPU 20, to which the call detection signal S2 has been input, shifts from the standby state to the call state, activates the ring sound generation circuit 22 and the power supply circuit 26, and causes the timer 28 to start counting the time of the call state. . When the CPU 20 is in the standby state and the calling state, the loudspeaker 23 and (the output side of) the voice synthesizing circuit 27 are connected to the master hybrid circuit 29 connected to the main line L1.

The activated ringing tone generating circuit 22 outputs a ringing tone signal S3 for sounding the loudspeaker 23. The ringing signal S3 is transmitted to the base station hybrid circuit 29.
, And is emitted from the loudspeaker 23 as a ringing tone. This notifies the resident in the dwelling unit of a call from a visitor at the dwelling unit entrance. The activated power supply circuit 26 supplies power to activate the voice synthesizing circuit 27, the master hybrid circuit 29, and the slave hybrid circuit 13 of the entrance slave unit 1, respectively. This allows
A signal transmission path is formed between the loudspeaker 23 and the voice synthesizing circuit 27, the master unit hybrid circuit 29, the trunk line L1, the slave unit microphone 11 and the slave unit speaker 12 via the slave unit hybrid circuit 13 of the entrance slave unit 1. .

Further, the CPU 20, which has shifted from the standby state to the calling state, reads a response message S10 such as "Who are you?" From a plurality of synthesized voices stored in advance in the voice synthesis circuit 27. Outputs S4. This read control signal S4 causes the voice synthesis circuit 27 to
The response message S10 read out from the main unit hybrid circuit 29 is amplified by the master unit hybrid circuit 29, and the slave unit hybrid circuit 13
Slave unit 12 as a response message amplified by
Sound is emitted from. Thereby, the visitor at the entrance of the dwelling unit is notified that the resident in the dwelling unit has been normally called, and is urged to input his / her own name through the slave unit microphone 11 of the entrance slave unit 1.

Here, when a visitor at the entrance of the dwelling unit inputs voice such as his / her own name through the slave unit microphone 11 of the entrance slave unit 1, this sound is amplified by the slave unit hybrid circuit 13 as an audio signal S20. Is output from the loudspeaker 23 as an audio signal amplified by the master unit hybrid circuit 29 of the indoor intercom master unit 2 via the trunk line L1. As a result, the resident in the dwelling unit called out,
The call from the visitor at the dwelling unit can be accurately determined not only from the ring tone emitted from the speaker 3 but also from the voice such as the name of the visitor.

Next, the resident who has correctly judged the call from the visitor of the dwelling unit by the caller and the voice such as the name of the visitor emitted from the loudspeaker 23 by the timer 28. When the handset 24 is picked up for answering the call within a predetermined time of the call state to be counted, the hook switch 25 is turned off, and the CPU 20 which detects the hook switch shifts from the call state to the call state based on the call answer, and connects to the trunk line L1. A control signal S5 for switching the connected master hybrid circuit 29 from the connection to the loudspeaker 23 and the voice synthesis circuit 27 to the connection to the handset 24 is output. Switching of the master hybrid circuit 29 is controlled by the control signal S5, and the handset 24 used by the resident in the dwelling unit and the master hybrid circuit 2
9. Trunk line L1, slave unit hybrid circuit 13 of entrance slave unit 1
, A microphone 11 used by a visitor at the entrance of the dwelling unit,
A communication path between the handset speakers 12 is formed, and voice signals can be transmitted and received via this communication path, and a call is established. Further, when the hook switch 25 is turned on due to the end of the call, the CPU 20 which has detected the hook switch 25 is restored from the call state to the standby state.

On the other hand, the resident in the dwelling unit who is called is absent, or the visitor at the dwelling unit is regarded as a suspicious person from both the ringing sound emitted from the loudspeaker 23 and the voice such as the name of the visitor. If the handset 24 is not picked up within the predetermined time of the call state counted by the timer 28, for example, when the absence is used and the absence is used, the CPU 20 turns on the hook switch 25 and the timer 28 which are turned on. The calling state is restored from the calling state to the standby state, which is the calling completion state, and the call end message S11 such as "Thank you." Is read out from the plurality of synthesized voices stored in the voice synthesis circuit 27 together with the control signal S5. Output of a read control signal S6. The call termination message S11 read from the voice synthesis circuit 27 by the read control signal S6.
Is amplified by the base unit hybrid circuit 29 and transmitted through the same route as the above-described response message S10, and
Is emitted from the slave unit speaker 12 of the second embodiment. Thereby, the visitor of the dwelling unit is urged to return.

[0018]

As is apparent from the above description, according to the intercom apparatus of the present invention, a resident in a dwelling unit called by a visitor at a dwelling unit before a call is established by answering a call. The visitor can be accurately determined based on the sound such as the name of the visitor along with the sound. Thereby, especially when the resident in the dwelling unit is a child, a woman, an elderly person, or the like, the security and convenience at the time of answering the call are improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an intercom apparatus according to the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional intercom apparatus.

[Explanation of symbols]

 1... Entrance cordless handset 2... Indoor intercom master unit 10... Call switch 11. · Ring detection circuit 22 ··· Ring tone generation circuit 23 ··· Loudspeaker 24 ··· Handset 27 ··· Voice synthesis circuit 28 ··· Timer S1 ··· · Call signal S10 · · · · Response message S11 · · · · Call end message

Claims (1)

[Claims] 1. A call signal (S1) is transmitted by a visitor operating a call switch (10) at an entrance slave unit (1), and a call detection circuit (21) of an indoor intercom master unit (2).
To detect a call, activate a ringing tone generation circuit (22), emit a ringing tone from a loudspeaker (23) to recognize the call, and set the slave unit microphone (11) and the slave unit speaker of the entrance slave unit. (12) An intercom apparatus for making a call between the indoor intercom master unit and a handset (24) of the indoor intercom master unit, wherein the indoor intercom master unit automatically answers a call from the visitor when detecting the call signal. A voice synthesizing circuit (27) for transmitting a response message (S10), and counting the time from when the call signal is detected, and when the handset of the indoor intercom master unit is not hooked off within a predetermined time, Timer (2) for transmitting the call end message (S11)
8) An intercom apparatus comprising: