JP2001086252A - Interphone system provided with transfer function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interphone system provided with a transfer function that transmits no message denoting it to a slave terminal, when a communication terminal is set to an automatic telephone answering mode or resident at the outside of a speech zone of a portable telephone, when a master terminal of an interphone system receives a call from the slave terminal and transfers the call to an external communication terminal. SOLUTION: A master terminal is provided with an automatic dial means 28, that automatically dials a communication terminal registered in advance, a reply detection means 23d that detects a reply from the communication terminal, a dial button operation detection means 23e that detects that a dial button 52 of the communication terminal is operated, and a control means 21 that controls the automatic dial means to call the communication terminal and connects to the slave terminal upon the receipt of a call signal from the slave terminal in a transfer mode. The control means 21 connects the communication terminal and the slave terminal, when the dial button operation detection means 23e detects the operation of the dial button of the communication terminal, after the reply detection means 23d detects the reply from the communication terminal.

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]

In a conventional intercom apparatus with a transfer function, when a call is received from a slave terminal while a transfer mode is set, an external communication terminal registered in advance by the master terminal is automatically set. A call is made and a communication path is formed between the slave terminal and the communication terminal.

However, when the communication terminal is set to an answering machine or when the communication terminal is a portable telephone and is out of the service area, a message to that effect is transmitted from the communication terminal to the slave terminal. However, there is a disadvantage that the visitor is informed that he is away.

The present invention has been made to solve such a conventional problem. When a master terminal receiving a call signal from a slave terminal transfers the call signal to an external communication terminal, the communication terminal answers the call. It is an object of the present invention to provide an intercom device with a transfer function that does not form a communication path between a slave terminal and a communication terminal when the terminal is set on a telephone or is out of a communication area.

[0009]

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;
Response detecting means for detecting a response from the communication terminal; dial button operation detecting means for detecting that a dial button of the communication terminal has been operated; and automatic calling means upon receiving a call signal from the slave terminal in the transfer mode. Control means for controlling the connection of the communication terminal to the calling terminal, wherein the control means detects a response from the communication terminal by the response detection means and operates the dial button of the communication terminal by the dial button operation detection means. Is detected, the communication terminal and the slave terminal are connected.

[0010] With this configuration, when the master terminal receives a call from the slave terminal in the transfer mode, the master terminal automatically calls the transfer destination communication terminal by the automatic calling means, and after detecting a response from the communication terminal, dials the communication terminal. The slave terminal and the communication terminal are connected by detecting that the button has been operated. Therefore, if the communication terminal is set to answering machine,
When the communication terminal is a mobile phone and is out of the service area, a message to that effect can be prevented from being transmitted from the communication terminal to the slave terminal.

Further, the control means of the intercom apparatus with the transfer function of the present invention has a detecting means for detecting whether or not to respond to the call of the slave terminal by operating the dial button of the communication terminal. The connection between the communication terminal and the slave terminal is selected based on the result.

With this configuration, the master terminal determines whether or not to respond to the call of the slave terminal by operating the dial button of the communication terminal, and if so, connects the slave terminal to the communication terminal. .

[0013]

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

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 includes a slave terminal 1 installed at the entrance or a gate of a dwelling unit, a master terminal 2 installed in the dwelling unit,
The parent terminal 2 is connected to a communication terminal 5 via a telephone network 4 and an exchange (not shown).

The handset terminal 1 includes a communication device 11 having a speaker and a microphone, and a call button 12. The communication terminal 5 includes a communication device 51 having a speaker and a microphone, and a dial button 52 for inputting a telephone number of a destination and performing various control operations.

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, the base unit terminal 2 includes a communication device 24 having a speaker and a microphone, a dial button 25 for inputting a telephone number of a destination and various control operations,
A transfer setting button 26 for instructing connection between the slave terminal 1 and the communication terminal 5 registered in advance, an alarm 27 for outputting various notification sounds such as a ringing chime sound, and an automatic calling circuit 28 for automatically calling the communication terminal 5 A number memory 29 for storing the subscriber number of the communication terminal 5 of the transfer destination, a clock circuit 30, and a message storage circuit 31 for storing voice messages.

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 are detected. A busy tone detection circuit 23b, a ring tone detection circuit 23c that detects a ringback tone indicating that the communication terminal 5 is ringing, a response detection circuit 23d that detects that the communication terminal 5 has answered, and a dial of the communication terminal 5. DTMF (DialTone Mull) as a dial button operation detecting means for detecting that the button 51 has been operated
ti Frequency) detection circuit 23e is included.

Next, the operation of this embodiment will be described first when 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.

In response to the ringing chime sound, the resident sets the communication 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.

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 sets 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 furthermore, 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 out from the message storage circuit 31, and the destination of the transfer destination is read out. The communication terminal 5 is notified by voice (step S7).

Thereafter, when the DTMF detection circuit 23e detects that the dial button 52 of the communication terminal 5 has been operated (step S8), the control device 21 sends the slave unit connection circuit 22
And a telephone network I / F 23 to form a communication path (step S9). As a result, the communication device 1 of the slave terminal 1
1 and the communication device 51 of the communication terminal 5 are connected to each other, so that voice communication is possible.

Next, when the control device 21 detects that the communication device 51 of the communication terminal 5 has finished the call (step S10), the control device 21 controls the telephone network I / F 23 to disconnect the connection with the communication terminal 5, and furthermore, Slave unit connection circuit 22 and telephone network I / F
Then, the connection with the H.23 is disconnected (step S11), 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 communication terminal 5 is busy, disconnects the communication terminal 5 (step S11), and ends the transfer process.

In step S6, the control device 2
1 indicates that 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 S12), As in the case of the middle, the connection with the call terminal 5 is disconnected (step S11), and the transfer processing is ended.

Further, in step S8, the control device 21 detects a response of the communication terminal 5 by the response detection circuit 23d and then counts a predetermined time by the time counting circuit 30.
The dial button 52 of the communication terminal 5 is detected by the MF detection circuit 23e.
If it is not detected that has been operated (step S1
3) As in the case of the busy state, the connection with the call terminal 5 is disconnected (step S11), and the transfer process is terminated.

In the above embodiment, the control device 2
1 detects that the dial button 52 of the communication terminal 5 has been operated to form a communication path, but determines whether or not the operation of the dial button 52 responds to the call of the slave terminal 1, ie, whether the slave Whether or not to connect to the terminal 1 may be selected. As a result, when responding to the call of the handset terminal 1, the handset connection circuit 22 and the telephone network I
/ F23 to form a communication path (step S9),
If no response is received, the connection with the telephone terminal 5 is disconnected (step S11).

In the above-described embodiment, the master terminal 2
Has described both the function of connecting to the slave terminal 1 and the function of transferring to the communication terminal 5, but each function is provided in a separate device. For example, the function of connecting to the slave terminal is The transfer function to the communication terminal may be provided to the transfer device, and the master device having the connection function and the transfer function may be configured by combining the two devices.

[0033]

As described above, according to the present invention, when the master terminal receives a call from the slave terminal in the transfer mode, the master terminal automatically calls the destination communication terminal by the automatic calling means, and After detecting the response, the slave terminal and the communication terminal are connected by detecting that the dial button of the communication terminal has been operated, so that when the communication terminal is set to the answering machine or the communication terminal It is an object of the present invention to provide an intercom device with a transfer function that can prevent a message to that effect from being transmitted from a communication terminal to a slave terminal when the mobile phone is out of the service area.

[Brief description of the drawings]

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.

FIG. 2 is a flowchart for explaining the operation of the intercom apparatus with a transfer function shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 slave unit terminal 2 master unit terminal 3 dedicated line 4 telephone network 5 communication terminal 11 communication device 12 call button 21 control device 22 slave device connection circuit 23 telephone network I / F 23a dial tone detection circuit 23b busy tone detection circuit 23c Sound detection circuit 23d Response detection circuit 23e DTMF detection circuit 24 communication device 25 dial button 26 transfer setting button 27 alarm 28 automatic calling circuit 29 number memory 30 clock circuit 31 message storage circuit 51 communication device 52 dial button

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Naoyuki Toyama 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture F-term in Matsushita Communication Industrial Co., Ltd. (Reference) 5K027 AA09 HH08 5K038 AA05 CC02 DD08 DD22 FF12

Claims (2)

[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; response detection means for detecting a response from the communication terminal; and dial button operation detection means for detecting that a dial button of the communication terminal has been operated. Control means for controlling the automatic calling means upon receiving a call signal from the slave terminal in the transfer mode to call the communication terminal and to connect to the slave terminal, wherein the control means is a response detecting means. When the response from the communication terminal is detected and the dial button operation detecting means detects that the dial button of the communication terminal is operated, the communication terminal and the slave terminal are connected. Transfer function intercom apparatus according to claim Rukoto. 2. The communication device according to claim 1, wherein the control unit includes a detection unit configured to detect whether or not to respond to a call of the slave terminal by operating a dial button of the communication terminal, and based on a detection result of the detection unit. 2. The intercom apparatus with a transfer function according to claim 1, wherein a connection between the child device terminals is selected.