JPH0746305A - Hand-free inter hone system and hand-free talking equipment - Google Patents

Abstract

PURPOSE:To provide a hand-free interphone system capable of executing batch call talking. CONSTITUTION:This hand-free interphone system is constituted of mutually connecting plural hand-free talking equipments 1A to 1C through a talking line 7 and a control line 8. When call operation is executed by any one. 1A e.g., of the talking equipments 1A to 1C and another hand-free talking equipment, 1B e.g. responds to the call, simultaneous talking can be mutually executed among all the talking equipments 1A to 1C for succeeding prescribed period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free intercom system in which a plurality of hands-free communicators are connected via a communication line and a control line, and an improvement of the hands-free communicator used in this system.

[0002]

2. Description of the Related Art Recently, hands-free telephones have come to be used, which can make a telephone call only by operating a telephone switch without using the telephone with a handset. However, the conventional hands-free caller can call multiple callers all at once, but it can only make a two-way call with the caller who pressed the call switch first. It is structured so that you cannot talk.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when a normal indoor call is made, a simultaneous call simultaneous call mode is set and a caller that responds It is an object of the present invention to provide an easy-to-use hands-free caller that is configured to be able to talk to each other including all callers for a predetermined time.

[0004]

The present invention proposed to achieve the above object includes the following intercom system and a hands-free telephone. That is,
The hands-free intercom system proposed in claim 1 is a hands-free intercom system in which a plurality of hands-free callers are connected via a call line and a control line. On the other hand, when any of the other handsfree callers responds, all other handsfree callers can talk to each other for a predetermined time thereafter.

The hands-free caller proposed in claim 2 includes a power supply circuit for supplying driving power to a speaker, a microphone, etc., and a call control circuit connected to a call line via a secret switch. Control data signal processing means for controlling the hands-free telephone by sending control data to the control line according to the operation of various operation switches such as calling and calling and determining the control data received through the control line. It is configured with and.

[0006]

According to the hands-free intercom system proposed in claim 1, by operating the indoor call switch of any of the hands-free telephones, all the hands-free telephones constituting the system can be called all at once. During a predetermined time after any one of the handsfree callers has answered, all handsfree callers including the responding caller can talk with each other, which can be used for simultaneous call notification.

Further, after the hands-free call is made between all the callers, the caller who has made an indoor call and the caller who has responded can continue the call, so that privacy can be maintained at the same time. Is also protected. According to the hands-free telephone proposed in claim 2, the simultaneous paging simultaneous telephone call can be executed by the following operations.

When any of the callers in the system operates the indoor call switch, the control data signal processing means of the called caller sends a call signal to the control line. On the other hand, when the control data signal processing means of the other communication device receives this calling signal, it outputs a calling sound and lights the calling lamp as necessary. Of the callers thus called,
When one of the callers operates the call switch to respond, the responding caller closes the confidential switch to form a call loop, and at the same time supplies power to the power supply circuit of the call control circuit. At the same time, the control data signal processing means of the telephone that responds sends a telephone ON signal to the control line.

Then, the control data signal processing means of the other communication device receives this communication ON signal, closes the confidential switch to form a communication loop, and power is supplied to the power supply circuit of the communication control circuit. The calling party's telephone can talk with all the telephones in the system. The other telephones that received the telephone call ON signal from the telephone that responded, telephone conversation
When a predetermined time has elapsed from the time when the signal was received, the confidential call switch is opened and the call loop is opened, so the call is disabled, but the responding handset then operates the call switch again until the call ends. Enables a two-way call with the caller.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hands-free intercom system according to the present invention and a hands-free telephone used in this system will be described below with reference to the drawings.
FIG. 1 shows the appearance of a hands-free telephone.
The handset 1 (1A, 1B, 1C) does not have a handset, but includes a room call switch 2, a call switch 3, a display lamp 4, a microphone 5 and a speaker 6 for a call. The display lamp 4 is used when displaying the identification of the calling parent device. Further, when a plurality of intercom sub-units, for example, two intercom sub-units are connected to the intercom as a master unit to form an intercom system, the type of intercom sub-unit of the calling source, the intercom sub-unit of the other party in the call It is also used to identify the device, and, for example, in the case of two intercom sub-devices, it is displayed by lighting or blinking in two colors of red and orange.

FIG. 2 shows an outline of the hands-free intercom system of the present invention, in which three hands-free telephones 1A, 1B, 1C are connected via a telephone line 7 and a control line 8. An example is shown. In this intercom system, when any of the handsfree callers 1B or 1C responds when the indoor call switch 2 of any of the handsfree callers (for example, 1A) is operated, a predetermined time, for example, Only for about 10 seconds, all the communication devices 1A, 1B, 1C constituting the system can simultaneously talk with each other. Therefore, when calling from the kitchen to each room for a meal or the like, the reply can be confirmed by voice at the same time. Moreover, the reason why a time limit is set for mutual simultaneous calls is to prevent invasion of privacy.

FIG. 3 shows the internal structure of the hands-free telephone of the present invention. Each of the hands-free telephones 1 is equipped with a power supply circuit 13 for supplying driving power to a microphone 5, a speaker 6 and the like, and a call line 7 is provided via a secret switch 14.
The operation of the call control circuit 15 connected to and the operation switches such as the indoor call switch 2 and the call switch 3 is determined, and the control signal is sent to the control line 8 and the control signal received from the control line 8 is determined. And a control data signal processing means 17 for controlling the hands-free telephone 1.
The control data signal processing means 17 includes a call control circuit 18
And a call indicator light control circuit 19 having the indicator light 4 are connected.

Next, the basic operation of the simultaneous calling simultaneous call mode in the intercom system of the present invention will be described. When the indoor call switch 2 of any of the hands-free callers 1A in the system is operated, the control data signal processing means 17 of the hands-free caller 1A sends a call signal to the control line 8.

On the other hand, the other telephones 1B and 1C are
When the control data signal processing means 17, 17 receives the call signal, the call control circuits 18, 18 are activated to output the call sounds all at once. By the way, in this case, if the call indicator lamp 4 provided on the caller is turned on in a lighting mode in which the caller of the caller can be identified, the caller 1A which is the caller of the caller 1B or 1C receiving the call. Can be easily identified and is convenient.

When one of the telephones, for example 1B, operates the telephone call switch 2 to respond to such a call, the confidential telephone switch 14 is closed and a telephone call loop is formed.
At the same time, power is supplied to the power supply circuit 13, so that the call control circuit 15 operates to enable a hands-free call.
In addition, the control data signal processing means 17 of the telephone 1B that responded to the call sends a telephone call ON signal to the control line 8.

On the other hand, when the control data signal processing means 17 of the other communication device 1C receives the communication ON signal, the confidential switch 14 is closed to form a communication loop, and at the same time, power is supplied to the power supply circuit 13. The call control circuit 15 operates to enable hands-free communication. As a result, the caller 1A of the calling source and all the callers 1B, 1 in the system.
With C, hands-free communication is possible at the same time for a predetermined time, for example, about 10 seconds. When the hands-free call time of a predetermined time elapses, the control data signal processing means 17 of the call device 1C that did not answer the call opens the confidential switch 14 so that the call loop is opened and at the same time, the power supply circuit 1
The power supply to 3 is also cut off and the call is prohibited.

On the other hand, on the other hand, the telephone set 1B that answered the call
Until the call switch 3 is operated again, after that, the confidential switch 14 is closed and the call loop is held, and at the same time, the power supply to the power supply circuit 13 is also held, so that the hands-free call can be continued. . Thus, when the telephone set 1B that has operated the telephone call switch 3 in response to a call operates the telephone call switch 3 again, the control data signal processing means 17 of the telephone set 1B sends a telephone call OFF signal to the control line 8. Control data signal processing means 1 of the calling telephone 1A
If the call OFF signal is received at 7, the call control circuit 1
The power supply to the power supply circuit 13 of No. 5 is cut off, and a series of call calls are completed.

Incidentally, steps 100 to 107 in FIG.
The basic operation procedure of the simultaneous call simultaneous call mode is shown by a flowchart. As described above, in the system of the present invention, a call can be made in a hands-free state by transmitting and receiving the control signal transmitted between the respective communication devices through the control line according to the operation of each communication device.

[0019]

As described above, according to the present invention, by simply operating the call switch, all the callers can be called all at once and can be contacted by voice, and at the same time the reply can be confirmed. is there. Further, after making a call by making a general call in this way, a two-way call between only the caller responding to the call and the caller of the caller can be continued, so there is no problem of privacy infringement.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of a hands-free phone according to the present invention.

FIG. 2 is a schematic configuration diagram of a hands-free intercom system of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a hands-free intercom of the present invention.

FIG. 4 is a flowchart showing an operation procedure of a paging call according to the present invention.

[Explanation of symbols]

 1, 1A, 1B, 1C Hands-free call device 2 Indoor call switch 3 Call switch 4 Indicator lamp 5 Microphone 6 Speaker 7 Call line 8 Control line 13 Power supply circuit 15 Call control circuit 17 Control data signal processing means

Claims (2)

[Claims] 1. A hands-free intercom system in which a plurality of hands-free callers are connected via a call line and a control line, and when any of the hands-free callers' indoor call operation is performed, another one of them is used. Hands-free intercom system that allows all hands-free phones to talk to each other for a predetermined time after the hands-free phone answers. 2. A call control circuit provided with a power supply circuit for supplying driving power to a speaker, a microphone, etc. and connected to a call line via a secret switch, and in response to operation of various operation switches such as call and call. , A control data signal processing means for controlling the hands-free telephone by sending control data to the control line and discriminating the control data received via the control line. .