JPH04349755A - Talking device - Google Patents

Abstract

PURPOSE:To attain doorphone talking and external line talking without use of a telephone set. CONSTITUTION:A master set is provided with a microphone 9, a speaker 6 and a speech network 23 to attain hand-free talking. The start and end operation of hand-free talking is implemented by using a speech switch 10. When the master set makes a doorphone call and an external line call, a control circuit 17 activates the speech network 23. When the master set implements the external line talking, the control circuit 17 closes a switch element 26 to form a channel between the speech network 23 and a telephone line via an external line talking network 24.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device that allows outside line calls and intercom calls using a telephone.

0002

2. Description of the Related Art A conventional communication device is shown in FIG. This communication device is a master unit 1' installed indoors.
The main unit 1' and the door intercom sub unit 2 are connected to each other by, for example, a two-core signal line 5. In this telephone device, when a visitor presses the call button 4 provided on the doorphone subunit 2, the main unit 1
A ring tone is emitted from the speaker 6 provided in ', and in response to this ring tone, the handset (receiver) 3 provided in the main device 1'
When it is picked up, a communication path is formed between the door intercom slave unit 2 and the main unit 1', and a door intercom call can be made.

By the way, telephone equipment is usually installed indoors, and in the case of the above-mentioned telephone equipment, it is installed completely independently of the above-mentioned telephone equipment. Therefore, various types of systems coexist indoors, which is undesirable. Therefore, a telephone communication device is provided that allows not only door intercom calls but also normal telephone calls (hereinafter referred to as outside line calls). This communication device is shown in FIG. In this communication device, a telephone 7 in addition to a door intercom subunit 2 is connected to a master unit 1'' via a two-core signal line 8,
The telephone 7 can be used to make outside calls, and the telephone 7 can also be used to make doorbell calls.

[0004] This telephone communication device has the advantage that the door intercom system and the telephone system can be integrated, and that the telephone set 7 can be highly functional.

[0005]

[Problems to be Solved by the Invention] However, the telephone device shown in FIG. 6 does not have a means for making doorphone calls and outside line calls before the telephone set 7 is installed, and it is not possible to inspect doorphone calls and outside line calls after installation is completed. There was a problem. Incidentally, such a situation may occur, for example, when construction is performed on a newly built house before moving in.

[0006] Furthermore, when making a doorbell call or an outside line call using the telephone set 7, it is necessary to pick up the handset, which is inconvenient in that it is not possible to make a doorbell call or an outside line call when your hands are dirty in the kitchen or the like. be. The present invention has been made in view of the above-mentioned points, and an object thereof is to provide a telephone communication device that allows door intercom calls and outside line calls without using a telephone.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a hands-free calling means for making a hands-free calling, and a switch for starting and ending a call using the hands-free calling means. When a doorphone call is made, the hands-free communication means forms a communication path between the hands-free communication means and the door intercom slave device, and the hands-free communication means is used to make an outside line call when a call is received. A communication path forming means for forming a communication path between the communication means and the telephone line is provided in the parent device.

[0008]

[Operation] By configuring the present invention as described above,
Enable doorbell calls and outside line calls on the parent device,
This allows doorbell calls and outside line calls to be made without the need for a telephone. Moreover, if you enable doorbell calls and outside line calls with the parent unit, you can inspect doorbell calls and outside line calls even when a telephone is not installed. Door phone calls and outside line calls can be inspected even in cases where the system is installed in Furthermore, unlike when making a doorphone call or an outside line call using a telephone, there is no need to always pick up the receiver to make a doorphone call or an outside line call, so the doorphone call can be made even when the hands are dirty in the kitchen or the like.

[0009]

[Example] As shown in FIG. 2, the communication device of this example has the following features:
Consists of a master unit 1, a doorbell slave unit 2, and a telephone set 7, as shown in Fig. 6.
Similarly to the communication device, the handset of the telephone set 7 can be used to make outside calls as well as door intercom calls. In this embodiment, a microphone 9 is provided in the master device 1, thereby making it possible to make hands-free door intercom calls and outside line calls. That is, the doorphone subunit 2 is equipped with a microphone 13 and a speaker 14 in order to make a call with the telephone 7, and the main unit 1 has a ring tone so that the main unit 1 can also notify that there is a doorbell call. Since it is equipped with a speaker 6 for ringing, just by providing the microphone 9 on the main unit 1 as described above, the microphones 9, 13 and speakers 6,
14, it is possible to make hands-free calls. however,
In order to perform this hands-free call, it is necessary to provide the base device 1 with a circuit that will be described later. This circuit will be described later.

The structure and circuit configuration of the main device 1 will be explained below. As shown in FIG. 1, this main unit 1 has external line connection terminals L1 and L2 to which a telephone line is connected, extension connection terminals T1 and T2 to which a telephone 7 is connected, and an intercom connection which connects a door intercom slave unit 2. It includes terminals D1 and D2. In addition, the extension connection terminals T1 and T2 are as shown in Figure 2.
As shown in the figure, a modular jack 11 is used, and a modular plug 12 is attached to the tip of the telephone cord, which is the signal line 8 that connects the telephone 7 and the main unit 1, so that the telephone 7 can be detachably connected to the main unit 1. be.

The circuit configuration of this main device 1 will be explained based on FIG. 1. The incoming call detection unit 15 detects an incoming call by detecting an incoming call signal sent through a telephone line, and is provided to notify the user that there is an incoming call, for example, when there is an incoming call during a doorbell call. There is. The hook detection unit 16 detects the hook state of the telephone 7 and detects the response state of the telephone 7 when the doorbell is called.
The output of the hook detection section 16 is used as a command to form a communication path for a door intercom call.

The control circuit 17 is composed of a CPU, and performs signal processing according to the detection outputs of the incoming call detection section 15 and the hook detection section 16, and also performs signal processing according to the detection outputs of the incoming call detection section 15 and the hook detection section 16, as well as a call to be described later. In response to the operation of the switch 10, the operations of the following sections are controlled. The switching circuit 18 is
For example, it is composed of a relay, and the two contacts of this relay are connected to external line connection terminals L1 and L2 and internal line connection terminal T.
1 and T2. The switching circuit 18 connects and disconnects the telephone 7 from the telephone line, and connects the telephone 7 to the door intercom slave unit 2 when the telephone 7 is disconnected from the telephone line. In the case of this embodiment, this switching circuit 18 is switched to connect the telephone 7 to the normal telephone line, and when the handset of the telephone 7 is picked up in response to a call from the intercom subunit 2, Connect the telephone 7 to the door intercom slave unit 2.

The current supply section 19 is provided to supply a talking current to the telephone 7 when the telephone 7 is disconnected from the telephone line by the switching circuit 18. Call circuit 2
0 is provided in a door intercom communication path, which is a communication path between the telephone 7 and the door intercom slave unit 2 formed by switching the switching circuit 18, and amplifies the audio signals of both and transmits them in both directions. Note that this call circuit 20 is controlled by a control circuit 17 so as to operate only during door intercom calls.

[0014] The call detection unit 21 detects a doorphone call because the call button 4 provided in the doorphone slave unit 2 is pressed.
The detection output is given to the control circuit 17. Melody generator 22
When the doorbell is called, the control circuit 17 controls the control circuit 17 to generate a ring tone (for example, a sound such as "ping pong"), and the melody generating section 22 generates a pseudo ring tone (for example, a sound such as "Leen Leen") when an incoming call is received. sound, etc.), and the speaker 6 emits a ringing tone. Additionally, when an incoming call is received during a doorphone call, it is possible to notify the user of the incoming call.

The speech network 23 is a circuit for making hands-free calls using the microphone 9 and the speaker 6, and can use, for example, a hands-free call circuit provided in a normal hands-free call device. Note that this speech network 23 is controlled by the control circuit 17 so as to operate only when making a hands-free call. In this embodiment, the speech network 23, the speaker 6, and the microphone 9 constitute a hands-free communication means.

The call switch 10 is used to start and end a hands-free call. Then, in response to the operation of the call switch 10, the control circuit 17 performs call path switching control. The outside call network 24 is a circuit for making hands-free outside calls,
A call circuit 25 that transmits audio signals in both directions, similar to the call circuit 20 for door intercom calls, a DC connection circuit 28 that captures the telephone line during hands-free calls, and isolates the call circuit 25 from the telephone line. It is composed of a transformer 27. This outside line communication network 24 is connected to the speech network 23 via a switch element 26 consisting of relay contacts and the like.
The switch element 26 is turned on and off to switch between an outside line call using the telephone set 7 and an outside line call using the hands-free call using the base unit 1.

The operation of this embodiment will be explained. In addition,
Regarding outside calls using the telephone 7, the switching circuit 18 normally connects the telephone 7 to the telephone line.
The call is made in the same way as a normal outside call. Therefore, detailed explanation will be omitted. Now, the call button 4 of the doorbell slave unit 2 is
) is pressed as shown in FIG.
As shown in FIG. 6(b), a ring tone is emitted from the speaker 6.

[0018] To answer this call using the telephone 7, it is sufficient to simply pick up the handset of the telephone 7. That is, when the handset of the telephone 7 is picked up, the hook detection section 16 detects this, and the control circuit 1 receives this detection output.
7 drives and controls the switching circuit 18. At this time, telephone 7
is disconnected from the telephone line and connected to the door intercom slave unit 2 via the communication circuit 20. Therefore, from now on, the telephone 7 can be used to make a doorbell call with the doorphone subunit 2. Incidentally, at this time, the speech network 23 is in an inactive state so as not to affect the door intercom call by the telephone 7.

Next, a case will be described in which the parent device 1 responds to the above call by making a hands-free call. In this case, the user may press the call switch 10 as shown in FIG. 3(c). That is, when the call switch 10 is pressed, the control circuit 17 activates the speech network 23, so that the audio signal input from the microphone 9 is output to the call circuit 20, and the audio signal input from the call circuit 20 is output to the speaker 6. As shown in FIG. 3(d), a hands-free intercom call can be made between the master unit 1 and the intercom slave unit 2.

In the case of an intercom call, the outside line communication network 24 is separated from the communication path for the intercom call by opening the switch element 26. Further, the switching circuit 18 maintains the state in which the telephone set 7 is connected to the telephone line. By the way, in a device that performs hands-free calls between the master unit 1 and the door intercom slave unit 2, there is a possibility that the call switch 10 may be pressed unnecessarily due to a child's mischief, and the call between the master unit 1 and the door intercom slave unit 2 may be interrupted. When a road is formed, there is a problem that indoor sound leaks. Therefore, within a certain period of time after receiving a call (
For example, only when the call switch 10 of the master unit 1 is pressed within 30 seconds), a call can be made with the door intercom slave unit 2.

[0021] Then, when ending the call, the process shown in Fig. 3 (
When the call switch 10 is pressed again as shown in c), the control circuit 17 stops the operation of the speech network 23, thereby ending the call. Note that δT1 to δT3 in FIG. 3 each indicate a delay time with respect to the operation. A case will be described in which the main unit 1 is used to respond to an incoming call. First, when the incoming call detector 15 detects an incoming call, the built-in bell of the telephone 7 rings as shown in FIG. 4(a). Then, the pseudo ringtone generated by the melody generating section 22 causes the speaker 6 of the master unit 1 to emit the pseudo ringtone shown in FIG. 4(b). When responding to the pseudo ring tone using the master unit 1, the call switch 10 is pressed (FIG. 4(c)), as in the case of the above-mentioned door intercom call. At this time, the control circuit 17 operates the DC connection circuit 28 and closes the switch element 26 to connect the speech network 23 and the outside line communication network 24. In other words, a communication path for an outside line call by hands-free communication is formed. In this case, the switching circuit 18 is switched to disconnect the telephone 7 from the telephone line. This allows hands-free calling. In other words, the hands-free communication means can be used exclusively for receiving outside calls. Note that here, since the telephone call circuit 20 is in an inactive state, no sound will leak from the door intercom slave unit 2 during the above-mentioned outside line call.

[0022] To end the hands-free outside line call, the user only has to press the call switch 10 again. In addition, telephone number 7 is used for the doorbell calls and incoming calls.
And the one who responds first with the master device 1 is allowed to talk. In other words, in response to a call, the person who picks up the handset first or presses the call switch 10 has priority.

[0023] By making it possible to make door intercom calls and outside line calls using the master device 1 in this manner, door intercom calls and outside line calls can be inspected even when the telephone set 7 is not attached. For example, even in the case of a newly built house before you move in, you can inspect doorbell calls and outside line calls. Additionally, there is no need to pick up the handset and make a doorphone call, unlike when making a doorphone call or an outside line call using the telephone set 7. Therefore, even when your hands are dirty in the kitchen, etc., you can still make a doorphone call or an outside line call. There are advantages to doing so.

By the way, when making a hands-free call of this kind, when the call ends, the call switch 10 is pressed again to end the call, but the end operation is often forgotten. Therefore, in order to prevent this forgetting to end a call, for example, the presence or absence of an audio signal in a communication path for hands-free calling is detected, and if an audio signal is not detected for a predetermined period of time or more, the You can use a method such as opening .

[0025] In the case of this embodiment, when a hands-free door intercom call and an outside line call are made in response to a call, the call path forming means for forming respective call paths for the outside line call and the door intercom call are provided. control circuit 17, switching circuit 18,
It is composed of a telephone communication circuit 20, a speech network 23, an external communication network 24, and a switch element 26.

[0026]

Effects of the Invention As described above, the present invention provides a hands-free call means for making a hands-free call, a switch for starting and ending a call using the hands-free call means, and a switch for making a hands-free call when a doorbell is called. A communication channel is formed between the hands-free communication means and the door intercom slave device when a doorphone call is made by the means, and between the hands-free communication means and the telephone line when an outside line call is made by the hands-free communication means when a call is received. Since the parent device is provided with a communication path forming means for forming a communication path, the parent device can perform door intercom calls and outside line calls, and therefore door intercom calls and outside line calls can be made without a telephone. Moreover, if you enable doorbell calls and outside line calls with the parent unit, you can inspect doorbell calls and outside line calls even when a telephone is not installed. Door phone calls and outside line calls can be inspected even in cases where the system is installed in Furthermore, unlike when making a doorphone call or an outside line call using a telephone, there is no need to always pick up the receiver to make a doorphone call or an outside line call, so the doorphone call can be made even when the hands are dirty in the kitchen or the like.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the circuit configuration of a parent device according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram of a telephone device.

FIG. 3 is an explanatory diagram of the operation when responding to a doorphone call using the parent device.

FIG. 4 is an explanatory diagram of the operation when responding to an outside line call using the parent device.

FIG. 5 is a system configuration diagram of a conventional example.

FIG. 6 is a system configuration diagram of another conventional example.

[Explanation of symbols]

1 Parent equipment 2　Doorphone slave unit 6 Speaker 7　Telephone 9. Microphone 10　Call switch 17 Control circuit 18 Switching circuit 20 Call circuit 23 Speech Network 24 External call network 26 Switch element

Claims (1)

[Claims] [Claim 1] A telephone set and a door intercom slave unit are connected to a master unit, and a communication path is switched between a public telephone line and the telephone set, and between the telephone set and the door intercom slave unit, so that an outside call can be made by the telephone and the telephone can be used. A telephone device for making a doorbell call, and a hands-free call means for making a hands-free call;
A communication path is formed between the switch for starting and ending a call using this hands-free communication means, and the hands-free communication means and the door intercom slave device when making a door-to-door call using the hands-free communication means when calling the doorbell. and a communication path forming means for forming a communication path between the hands-free communication means and the telephone line when an external call is made using the hands-free communication means when a call is received. Device.