JP2001103169A - Intercom device with transfer function - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an intercom apparatus with a transfer function for transferring a call from a slave terminal to an external communication terminal under a predetermined condition by a master terminal, wherein the communication terminal is busy. A new intercom device with a transfer function is provided. SOLUTION: A base unit terminal 2 has an automatic calling means 28 for automatically calling a communication terminal 5 registered in advance, a busy sound detecting means 23a for detecting a busy sound indicating that the communication terminal is busy,
When a call signal is received from the slave terminal, the automatic calling means is controlled to automatically call the communication terminal, and when the busy sound detecting means detects a busy sound, the connection with the communication terminal is disconnected and the automatic calling means is used. And control means 21 for automatically calling again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for receiving a call from a slave unit terminal of an intercom installed at, for example, the entrance of a dwelling unit by a master unit terminal of the intercom installed in the dwelling unit, and under a predetermined condition. The present invention relates to an intercom device with a transfer function for transferring to an external communication terminal.

[0002]

2. Description of the Related Art Conventionally, a slave terminal having a communication device including a speaker and a microphone has been installed at the entrance of a dwelling unit, and a master terminal having a communication device also including a speaker and a microphone has been installed in a dwelling unit. 2. Description of the Related Art There is known an intercom apparatus in which terminals are connected via a dedicated line.

In this intercom apparatus, when a visitor presses a call button of a slave terminal, a calling chime of the master terminal sounds, and in response, the resident responds with the calling device of the master terminal, and the slave unit responds. The voice communication between the communication device of the terminal and the communication device of the master terminal is performed.

[0004] Further, a TV camera is provided in the slave terminal, a monitor TV is provided in the master terminal, and the image of the visitor captured by the TV camera is displayed on the monitor TV, and the resident checks the state to provide a security function. Enhanced devices have also been proposed.

[0005] When a call is received from a child terminal while a resident is out of the office, the parent terminal automatically calls a communication terminal (such as an outgoing telephone or mobile telephone) registered in advance.
There has also been proposed an intercom device with a transfer function in which a visitor and a resident can communicate in real time by connecting a slave terminal and a communication terminal (for example, JP-A-6-164746). ).

[0006]

A conventional intercom apparatus with a transfer function automatically calls a communication terminal registered in advance when a call is received from a slave terminal while a resident is out of the office. If the communication terminal is busy or does not answer the call, the transfer process is terminated in about several tens of seconds. For this reason, visitors and out-of-home residents may not be able to communicate in real time.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem. When a master terminal that has received a call signal from a slave terminal automatically calls an external communication terminal registered in advance. Another object of the present invention is to provide a new intercom device with a transfer function in consideration of a case where a communication terminal is busy or no response.

[0008]

An intercom apparatus with a transfer function according to the present invention is connected to a slave terminal having a calling means and a calling means and to an external communication terminal connected to the slave terminal via a communication line. A master terminal, and the master terminal includes:
Automatic calling means for automatically calling a communication terminal registered in advance;
A busy tone detecting means for detecting a busy tone indicating that the communication terminal is busy, and a busy tone detecting means for automatically calling the communication terminal by controlling the automatic calling means upon receiving a call signal from the slave terminal. Control means for disconnecting the connection with the communication terminal when the busy sound is detected by the means and automatically calling again by the automatic calling means.

With this configuration, the base station terminal automatically calls the communication terminal by the automatic calling means, and when a busy tone is detected, disconnects the connection with the communication terminal and automatically calls the communication terminal again by the automatic calling means. Since the call is made, the connection possibility increases even when the communication terminal is busy.

[0010] Also, the intercom apparatus with a transfer function of the present invention comprises: a slave terminal having calling means and calling means;
A master terminal connected to the slave terminal and connected to an external communication terminal via a communication line, wherein the master terminal includes an automatic calling means for automatically calling a communication terminal registered in advance, and a communication terminal. A ringing tone detecting means for detecting a ringing tone to be called, a response detecting means for detecting a response from the communication terminal, and an automatic calling means for controlling the automatic calling means upon receiving a calling signal from the slave terminal to automatically call and call the communication terminal. If the response detection means does not detect a response after a certain period of time from the detection of the ringing tone by the sound detection means, disconnect the connection with the communication terminal and control the automatic calling means again by the automatic calling means. Prepare.

According to this configuration, the base station terminal automatically calls the communication terminal by the automatic calling means, and if no response is detected from the communication terminal within a certain period of time after the detection of the ringing tone, the master terminal communicates with the communication terminal. Is disconnected and automatic calling is performed again by the automatic calling means, so that the possibility of connection increases even if the communication terminal does not respond.

In the intercom apparatus with a transfer function according to the present invention, the communication terminal which the control means automatically calls again by the automatic calling means is another communication terminal registered in advance.

With this configuration, the base station terminal automatically calls the communication terminal by the automatic calling means and responds from the communication terminal when a busy tone is detected or after a certain period of time has elapsed since the detection of the ringing tone. If no is detected, the connection with the communication terminal is disconnected and the automatic calling means automatically calls another communication terminal.
Even if the communication terminal is busy or does not answer, the connection possibility is increased.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of an intercom apparatus with a transfer function according to Embodiment 1 of the present invention. This device comprises a slave terminal 1 installed at the entrance or gate of a dwelling unit, a base unit terminal 2 installed in the dwelling unit, and a dedicated line 3 connecting these two terminals. It is connected to a communication terminal 5 via a network 4 and an exchange not shown.

The handset terminal 1 includes a communication device 11 having a speaker and a microphone as a communication means, a call button 12 as a calling means, and a television camera 13. The communication terminal 5 includes a communication device 51 as a communication means, a dial button 52 for inputting a telephone number of the other party, and a monitor television 53.

The base unit terminal 2 comprises a control unit 21 constituting control means, a slave unit connection circuit 22 for connecting the control unit 21 to the leased line 3, and a telephone network interface for connecting the control unit 21 to the telephone network 4. (I / F) 23.

Further, base unit terminal 2 has a communication device 24 having a speaker and a microphone, a dial button 25 for inputting a telephone number of the other party, and a transfer commanding connection between slave unit terminal 1 and communication terminal 5 registered in advance. Setting button 2
6. An alarm 2 that outputs various alarms such as a ringing chime
7, an automatic calling circuit 28 as an automatic calling means for automatically calling the communication terminal 5, a number memory 29 for storing the subscriber number of the transfer destination communication terminal 5, a clock circuit 30, a message in which a voice message is stored. Storage circuit 31, monitor television 3
2 is provided.

In the telephone network I / F 23, a dial tone detecting circuit 23a for detecting a dial tone (dial tone) sent from the exchange, and a busy tone indicating that the communication terminal 5 is busy. It includes a busy tone detection circuit 23b, a ring tone detection circuit 23c for detecting a ringback tone indicating that the communication terminal 5 is ringing, and a response detection circuit 23d for detecting that the communication terminal 5 has answered.

Next, the operation of the present embodiment will be described for the case where the transfer setting button 26 is set to the non-transfer mode.

In this case, when the visitor presses the call button 12 of the slave terminal 1, the call signal is transmitted to the slave connection circuit 22 of the master terminal 2 via the dedicated line 3. Control device 2
When 1 receives a calling signal from the handset connection circuit 22, the control unit 1 controls the alarm 27 to sound a calling chime sound. The control device 21 activates the communication device 11 and the television camera 13 of the slave terminal 1.

Resident responds to the ringing chime sound by calling device 2
When a response is made at 4, the communication device 11 of the slave terminal 1 and the communication device 24 of the master terminal 2 are connected, and a voice call can be made between the two devices. At the same time, the image captured by the television camera 13 is displayed on the monitor television 34, so that the resident can talk while confirming the visitor displayed on the monitor television 34.

Next, the operation when the transfer setting button 26 is set to the transfer mode will be described with reference to the flowchart shown in FIG.

First, the visitor presses the call button 1 of the slave terminal 1.
When 2 is pressed, the control device 21 receives a calling signal via the dedicated line 3 and the slave unit connection circuit 22 (step S1), and controls the alarm 27 to sound a calling chime sound.

Further, the control device 21 performs a calling process for an exchange (not shown) connected to the telephone network 4 via the telephone network I / F 23 (step S2). As a result, when the dial tone is detected by the dial tone detection circuit 23a, the control device 21 reads the subscriber number of the communication terminal 5 registered in the number memory 29 (step S3), and
8 to send a dial signal from the telephone network I / F 23 to the exchange (step S4).

As a result, when the ring back tone is detected by the ringing tone detection circuit 23c, the control device 21
Is determined to be not busy (step S5), and when a response from the communication terminal 5 is detected by the response detection circuit 23d (step S6), a message indicating that there is a visitor is read from the message storage circuit 31, and the communication of the transfer destination is performed. The terminal 5 is notified by voice, and the slave unit connection circuit 22 and the telephone network I / F 23 are connected to form a communication path (step S8).

As a result, the communication device 11 of the slave terminal 1 and the communication device 51 of the communication terminal 5 are connected to enable voice communication, and the image signal captured by the television camera 13 is transmitted to the monitor television 53 at the same time. Residents can talk while watching visitors from outside.

Next, when the control device 21 detects that the communication terminal 5 has ended the call (step S9), it controls the telephone network I / F 23 to disconnect the connection with the call terminal 5, and the slave unit connection circuit 22 Then, the connection with the telephone network I / F 23 is disconnected (step S10), and the transfer process ends.

In step S5, when the busy tone detection circuit 23b detects a busy tone, the control device 21
Determines that the call terminal 5 is busy, and performs a disconnection process (step S11).

Next, the control device 21 increments a counter for counting the number of retransmissions (step S1).
2) If the number of retransmissions is less than the predetermined value n (Step S)
13) The call originating process (step S2) and subsequent processes are repeated again. When the busy state of the call terminal 5 continues and the number of retransmissions reaches the predetermined value n (step S13), it is determined that the connection cannot be established, and the transfer process ends. The predetermined value n is a changeable value.

In step S6, the control device 2
Reference numeral 1 denotes a case where the ringback tone is detected by the ringing tone detection circuit 23c and then the timer circuit 30 counts a certain period of time. If the response detection circuit 23d cannot detect a response from the communication terminal 5 during that time (step S7), As in the case of the middle, the connection with the call terminal 5 is disconnected (step S11), and the retransmission processing is executed (steps S12 to S13). The certain time counted by the clock circuit 32 is a changeable value.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described. In this embodiment, the number memory 2
9, the subscriber numbers of the plurality of communication terminals 5 are stored.
It is configured to transfer data in a preset order. The configuration of the intercom apparatus with a transfer function according to the present embodiment is the same as the configuration shown in the first embodiment, and a description thereof will be omitted. Further, the operation when the transfer setting button 26 is set to the non-transfer mode is the same as that in the first embodiment, and thus the description is omitted.

Next, the operation when the transfer setting button 26 is set to the transfer mode will be described with reference to the flowchart shown in FIG. The same processes as those shown in FIG. 2 will be described with the same step numbers.

First, the visitor presses the call button 1 of the slave terminal 1.
When 2 is pressed, the control device 21 receives a calling signal via the dedicated line 3 and the slave unit connection circuit 22 (step S1), and controls the alarm 27 to sound a calling chime sound.

Further, the control device 21 performs a calling process for an exchange (not shown) connected to the telephone network 4 via the telephone network I / F 23 (step S2). As a result, when the dial tone is detected by the dial tone detection circuit 23a, the control device 21 reads the subscriber number of the communication terminal 5 registered in the number memory 29 (step S3), and
8 to send a dial signal from the telephone network I / F 23 to the exchange (step S4).

As a result, when the ringback tone is detected by the ringing tone detection circuit 23c, the control device 21
Is determined to be not busy (step S5), and when a response from the communication terminal 5 is detected by the response detection circuit 23d (step S6), a message indicating that there is a visitor is read from the message storage circuit 31, and the communication of the transfer destination is performed. The terminal 5 is notified by voice, and the slave unit connection circuit 22 and the telephone network I / F 23 are connected to form a communication path (step S8).

As a result, the communication device 11 of the slave terminal 1 and the communication device 51 of the communication terminal 5 are connected to enable voice communication, and at the same time, an image signal captured by the television camera 13 is transmitted to the monitor television 53. Residents can talk while watching visitors from outside.

Next, when the control device 21 detects that the communication terminal 5 has finished the call (step S9), it controls the telephone network I / F 23 to disconnect the connection with the call terminal 5, and the slave unit connection circuit 22 Then, the connection with the telephone network I / F 23 is disconnected (step S10), and the transfer process ends.

When the busy tone detection circuit 23b detects a busy tone in step S5, the control device 21
Determines that the call terminal 5 is busy, and performs a disconnection process (step S11).

Next, the control device 21 determines whether or not the subscriber number of the communication terminal 5 of the next transfer destination is registered in the number memory 29 (step S21). Change to the previous number (Step S2
2) The processing after the calling processing (step S2) is performed.

The next transfer destination communication terminal 5 is stored in the number memory 29.
If there is no subscriber number, or if the subscriber numbers of all registered transfer destination communication terminals 5 are called (step S21), it is determined that connection cannot be established, and the transfer process ends.

In step S6, the control device 2
Reference numeral 1 denotes a case where the ringback tone is detected by the ringing tone detection circuit 23c and then the timer circuit 30 counts a certain period of time. If the response detection circuit 23d cannot detect a response from the communication terminal 5 during that time (step S7), As in the case of the middle, the connection with the call terminal 5 is disconnected (step S11), and retransmission processing to another transfer destination is executed (steps S21 to S22).

In the above-described embodiment, a case has been described in which the master terminal has a function of connecting to the slave terminal and a function of transferring the communication terminal to the communication terminal. Alternatively, the connection function and the transfer function of the master terminal described above may be realized by combining the two devices.

[0044]

As described above, according to the present invention, the master terminal automatically calls the communication terminal of the transfer destination by the automatic calling means and detects a busy tone or a ring tone. If no response is detected after a certain period of time, the connection with the communication terminal is disconnected and the call is automatically originated again, so that the advantageous effect of increasing the possibility of connection with the communication terminal is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an intercom device with a transfer function according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating the operation of the intercom apparatus with a transfer function according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating the operation of the intercom apparatus with a transfer function according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slave terminal 2 Base unit terminal 3 Dedicated line 4 Telephone network 5 Communication terminal 11 Telecommunication device 12 Call button 13 Television camera 21 Control device 22 Remote device connection circuit 23 Telephone network I / F 23a Dial tone detection circuit 23b Busy tone detection Circuit 23c Ring detection circuit 23d Answer detection circuit 24 Communication device 25 Dial button 26 Transfer setting button 27 Alarm 28 Automatic call circuit 29 Number memory 30 Clock circuit 31 Message storage circuit 32 Monitor television 51 Communication device 52 Dial button 53 Monitor television

Claims (3)

[Claims] 1. A slave terminal having calling means and calling means, and a master terminal connected to the slave terminal and connected to an external communication terminal via a communication line, wherein the master terminal includes: Automatic calling means for automatically calling a communication terminal registered in advance, busy sound detection means for detecting a busy sound indicating that the communication terminal is busy, and receiving a call signal from the slave terminal, Control for automatically calling the communication terminal by controlling automatic calling means and disconnecting the connection with the communication terminal when the busy sound detecting means detects a busy sound and automatically calling again by the automatic calling means Means, and an intercom device with a transfer function. 2. A slave terminal having calling means and calling means, and a master terminal connected to the slave terminal and connected to an external communication terminal via a communication line, wherein the master terminal includes: Automatic calling means for automatically calling a communication terminal registered in advance; ringing sound detection means for detecting a ringing sound calling the communication terminal; response detection means for detecting a response from the communication terminal; When a call signal is received from the telephone, the automatic calling means is controlled to automatically call the communication terminal, and a response is detected by the response detecting means even after a lapse of a fixed time after the calling sound is detected by the ringing sound detecting means. And control means for automatically disconnecting the connection with the communication terminal and automatically calling again by the automatic calling means if not performed. 3. The intercom apparatus with a transfer function according to claim 1, wherein the communication terminal automatically making a call again by the control means with the automatic calling means is another communication terminal registered in advance. .