JP2002209021A - Wireless interphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless interphone system where a wireless interphone is installed at or moved to an optional place to allow a user to make a hands- free extension speech anywhere and a wireless interphone can easily be extended without labor and hour. SOLUTION: The wireless interphone system is configured with a combination of wireless interphones 1, 2 each having a hands-free speech means that compares a level of a voice signal to be sent to a speech opposite party with a level of a voice signal received from the speech opposite party and validates the voice signal whose level is higher and transmitting/receiving a prescribed wireless signal between the wireless interphones 1, 2 makes a hands-free extension speech between the wireless interphones 1, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless intercom having a hands-free call function, and a wireless intercom system using the wireless intercom.

[0002]

2. Description of the Related Art In recent years, intercom systems have been widely used in ordinary houses and the like, and as shown in FIG.
A plurality of intercom sub master units 200 (# 1 to #n) are sequentially connected to the two intercom master units 100 via a two-wire signal line L.

As shown in FIG. 9, a base unit 100 and a sub-base unit 200 control a control circuit 110 for controlling each of them, and a hands-free call circuit 111 for making a hands-free call using a speaker 112 and a microphone 113. An extension call button 114 operated for calling an extension, a call button 115 operated for responding to an extension called, a power supply 116
And an extension switching circuit 117 for switching an electrical connection of the two-wire signal line L to the communication line l.

[0004] The hands-free communication circuit 111 includes a microphone 1
13, an amplifier AMP1 for amplifying the level of an audio signal to be transmitted to the other party, and an amplifier AMP2 for amplifying the level of an audio signal to be output to the speaker 112 and input from the other party.
And an amplifier control circuit 111A for controlling the AMP2.

The amplifier control circuit 111A includes an amplifier AMP
The levels of the audio signals input to the amplifiers 1 and AMP2 are compared, and the amplifiers AMP1 and AMP2 to which the audio signals having the higher levels are input are operated and amplified. That is,
If the level of the audio signal input from the microphone 113 is higher, the amplifier control circuit 111A
Is operated (transmission mode). At this time, the amplifier AMP
The audio signal amplified by 1 is transmitted to the other party.

On the other hand, if the level of the audio signal to be output to the speaker 112 is higher, the amplifier AMP2 is operated (receive mode). At this time, the audio signal amplified by the amplifier AMP2 is output from the speaker 112 as audio. This allows hands-free alternate communication with the other party.

According to such a configuration, the intercom 1
A hands-free extension call can be made between 00 and 200. That is, when another intercom 100, 200 is called by extension from intercom master unit 100, 200, an extension ringing sound such as "Poo" is sounded on the called side, for example.

Thereafter, both the calling side and the called side are electrically connected to the communication line 1 for a predetermined time, and the calling side calls all the called sides by voice, for example, " It is possible to make a call, such as "It's rice" or "Respond to Mr. XX"

If there is a response from any one of the called parties during a predetermined time, the other intercom 100,
At 200, the electrical connection with the call line 1 is released, and a 1: 1 extension call state is established between the responding unit and the calling side.

[0010] Wireless intercom 1 in an extension call state
The operations of 00 and 200 will be described with reference to the time chart of FIG. When speaker A speaks and speaker B does not speak, hands-free circuit 111 of intercom A used by speaker A
Executes the transmission mode, while the hands-free circuit 111 of the intercom B used by the speaker B executes the reception mode. Thereby, the voice spoken by speaker A is output from speaker 112 of intercom B.

On the other hand, when speaker B speaks and speaker A does not speak, hands-free circuit 111 of intercom B used by speaker B executes the transmission mode, while intercom A of speaker A uses The hands-free circuit 111 executes the reception mode. Thereby, the voice spoken by speaker B is output from speaker 112 of intercom A.

Here, intercoms 100 and 200 in the extension call state are referred to as intercoms A and B, respectively.
The persons who make extension calls using the intercoms A and B are described as speakers A and B, respectively.

[0013]

However, the above-described conventional intercom system has the following problems. That is, since the interphones are connected by the two-wire signal line, it is necessary to perform wiring work between the interphones. Once the system is constructed, it is difficult to move the interphones to an arbitrary location. . In addition, additional intercoms require additional wiring work and cannot be easily added.

Further, since there is no mechanism for adjusting the volume of a call, when interphones in a call are close to each other, howling or the like occurs due to the wraparound of sound.

[0015] Further, as described above, since a call is made to all of the callees by voice until the call is answered by any one of the callees after the extension call, the caller, Since all the called parties are electrically connected to the call line, the level of the voice signal transmitted and received on the call line is reduced, and the volume of the call heard on the called side is reduced. Further, as described above, since there is no mechanism for adjusting the call volume, the call volume cannot be adjusted to an appropriate value.

Further, as described above, the intercom in the extension call state switches the mode of the hands-free call circuit so that hands-free alternate conversation is performed, but the mode is switched between both interphones. As a result, as shown in FIG. 11, the switching time until the switching of the modes of both hands-free communication circuits is completed becomes longer, the head of the voice is likely to be cut off, and the communication may become unclear. Was.

The present invention has been proposed to solve these problems.

[0018]

Therefore, according to the first aspect of the present invention, the level of an audio signal to be transmitted to the other party and the level of the audio signal input from the other party are compared.
It is configured by combining a plurality of wireless intercoms provided with hands-free calling means for validating the sound signal of the high level, and by transmitting and receiving a predetermined wireless signal between the wireless interphones, a hands-free extension call between the wireless interphones is performed. We have proposed a wireless intercom system with a configuration.

According to a second aspect of the present invention, in the first aspect, the wireless intercom includes a voice signal to be transmitted to a communication partner,
And a communication volume adjusting means for adjusting the level of the audio signal input from the other party.

According to a third aspect of the present invention, in the first or second aspect, the wireless intercom is provided with an extension ring tone creating means for creating a predetermined extension ring tone, and when a call for an extension call is received, A predetermined extension ring tone is created by the extension ring tone creating means, and the created extension ring tone is output.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the wireless intercom, after calling for an extension call, waits for a response until a call is received. The voice call can be made, and the called voice is transmitted as a wireless signal to the wireless intercom on the called side.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a hands-free extension call is made by using the hands-free call means of the calling side without using the hands-free call means of the called side. do.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, there is provided a wireless repeater in which an intercom slave unit is connected by a signal line.
Hands-free communication with the intercom slave unit is performed by transmitting and receiving a predetermined wireless signal to and from the wireless repeater.

According to a seventh aspect, in any one of the first to fifth aspects, there is provided one or a plurality of wireless repeaters in each of which a doorphone slave unit is connected by a signal line. A hands-free communication with the intercom slave unit is performed by transmitting and receiving a predetermined wireless signal between the terminals.

According to claim 8, in any one of claims 1 to 7, a wireless call device for outputting a wireless signal by manual operation is provided, and the wireless call device is manually operated to output a wireless signal. Sometimes, the wireless intercom makes a predetermined call call.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a main configuration of a wireless intercom system of the present invention.

In this embodiment, one wireless intercom master unit 1 and a plurality of wireless interphone sub master units 2 (# 1 to #n) are installed as wireless interphones. In the drawing, reference numeral 14 denotes an extension call button, and reference numeral 15 denotes a call button. These functions will be described later.

The master unit 1 and the sub master unit 2 have a main part configuration as shown in FIG. 2, and a control circuit 10 for controlling the respective units.
A hands-free call circuit 11 for making a hands-free call using the speaker 12 and the microphone 13, an extension call button 14 for operating an extension call, and an operation for responding to an extension call. Call button 15 and power supply 16
A charging circuit 18 for charging a rechargeable battery 19 with a power supply 16 and a wireless circuit 20 for transmitting and receiving wireless signals.

The hands-free communication circuit 11 includes a microphone 13
And an amplifier AMP1 for amplifying the level of the audio signal to be transmitted to the other party,
Amplifiers AMP2 for amplifying the level of the audio signal to be output to the speaker 12, and amplifiers AMP1 and AMP2;
2 for controlling the amplifier 2.

The amplifier control circuit 11A includes an amplifier AMP
The levels of the audio signals input to the amplifiers 1 and AMP2 are compared, and the amplifiers AMP1 and AMP2 to which the audio signals having the higher levels are input are operated and amplified. That is,
If the level of the audio signal input from the microphone 13 is higher, the amplifier control circuit 11A operates the amplifier AMP1 (transmitting mode). At this time, the audio signal amplified by the amplifier AMP1 is transmitted to the other party.

On the other hand, if the level of the audio signal to be output to the speaker 12 is higher, the amplifier AMP2 is operated (receive mode). At this time, the audio signal amplified by the amplifier AMP2 is output from the speaker 12 as audio. This allows hands-free alternate communication with the other party.

According to such a configuration, a hands-free extension call can be made between the intercoms 1 and 2.
That is, the intercom master units 1 and 2
Is operated, a wireless extension calling signal is transmitted to the other intercoms 1 and 2 to call the extension. Then the caller,
On the called side, for example, an extension ringing sound such as “Poo” sounds.

Thereafter, for a predetermined period of time, a voice signal is transmitted as a wireless signal from the calling side to all the called sides, so that a voice call, for example,
Calls such as "I'm rice" or "Please answer Mr. XX" can be made. Here, since the voice called to the called side is transmitted as a wireless signal, even if the number of interphones on the called side is large, it can be transmitted without lowering the level of the voice called to the called side, The called party can be called with a high quality voice.

If there is a response from any one of the called parties during a predetermined time, a communication path is formed between the responding one and the calling party, and a 1: 1 extension communication state is established. A hands-free extension call using each hands-free communication circuit 11 can be performed.

With such a configuration, the wireless intercoms 1 and 2 can be installed or moved to an arbitrary location and a hands-free extension call can be made anywhere, which is highly convenient. In addition, even when the wireless intercoms 1 and 2 are added, it is not necessary to add wiring and to perform the work, and it is easy. Note that the wireless intercoms 1 and 2, which have not participated in the extension call, can make a door phone call or call as described later.

The wireless interphones 1 and 2 may have a main configuration as shown in FIG. This is a call volume adjusting switch 21 which constitutes the call volume adjusting means of the present invention.
By operating the call volume adjustment SW 21, the level of the audio signal to be transmitted to the other party and the level of the audio signal input from the other party can be adjusted. Accordingly, even if the wireless intercoms 1 and 2 in the call state are close to each other and howling or the like occurs due to sound wraparound, it can be dealt with by setting the appropriate call volume by a simple operation of the call volume adjustment SW21. . In addition, the level of the audio signal to the other party,
The level of the voice signal from the other party
By the operation of 21, switching may be performed in conjunction with each other, or may be switched independently of each other.

The wireless intercoms 1, 2 are
The main part configuration as shown in FIG. 4 may be used. This apparatus further comprises an extension ring tone creation circuit 22 constituting the extension ring tone creation means of the present invention. When an extension call is received from another wireless intercom 1, 2, a predetermined extension ring tone, for example, Create an extension ring tone such as "Pooh". When receiving an extension call, the extension ring tone generation circuit 22 outputs an extension ring tone and outputs it from the speaker 12. As a result, the wireless extension calling signal transmitted from the calling side does not need to specify the ringing tone pattern in the data frame, and the extension calling tone uniquely created by the called side is output. It is possible to output a high-quality ringing tone regardless of the radio wave condition.

Further, the wireless intercoms 1 and 2
The main part configuration as shown in FIG.
The voice signal input from the
Bypass circuit 23 for sending to the other party without passing through
(# 1) and a bypass circuit (# 2) for transmitting the voice signal input from the other party to the speaker 12 without passing through the hands-free communication circuit 11.

This is a so-called audio system that operates the bypass circuit 23 (# 1, # 2) so that the hands-free communication circuit 11 is not used when the called party is making an extension call. Form a signal bypass. As a result, the calling side hands-free communication circuit 11
With only the operation, a two-party hands-free extension call is made.

That is, the wireless intercoms 1, 2
During the extension call state between the wireless intercoms 1 and 2 on the calling side, the bypass circuit 23 does not operate,
An audio signal is input to the hands-free communication circuit 11, and the hands-free communication circuit 11 operates as described above. On the other hand, in the wireless intercoms 1 and 2 on the called side, no voice signal is input to the hands-free communication circuit 11 by the operation of the bypass circuit 23. Thus, only the operation of the hands-free communication circuit 11 on the calling side makes a hands-free extension call between the two parties.

With such a configuration, FIG.
And a hands-free extension call as shown in the time chart of FIG.
Since the mode switching operation is performed only in the mode 1, the switching time until the switching is completed is halved compared to the conventional art, so that the beginning of the voice is less likely to occur, and the call can be clarified.

FIG. 7 is a diagram showing another example of the configuration of the main part of the wireless intercom system. In this example, two intercom units 5 (# 1, # 1) are installed at the entrance or the like.
The wireless repeaters 4 (# 1 and # 2) are connected to each of 2) via a two-wire signal line L. In addition, a wireless intercom master unit 1, a wireless intercom subsidiary master unit 2, and a wireless intercom slave unit 3 are installed at appropriate places in a building, and further, a wireless calling signal is transmitted by manual operation (operation of a push button, a switch, a pull cord, etc.). A plurality of wireless call devices 6 for outputting are installed. The main configuration of the wireless intercom slave unit 3 is the same as that of the master unit 1 and the sub master unit 2.

Each of the wireless interphones 1 to 3 is provided with a different type of wireless module according to the purpose of use, and is set as a master unit, a subsidiary master unit, and a slave unit, respectively. That is, the master unit 1 is a master unit by mounting a master module, and the wireless repeater 4,
Wireless signals can be transmitted and received between the sub master unit 2 and the slave unit 3.

The sub-base unit 2 is a sub-base unit by mounting both a master module and a sub-module. The sub-base unit 2 includes a wireless repeater 4, a base unit 1, another sub-base unit 2, and a sub-unit 3. Can send and receive wireless signals to and from

Further, the child device 3 is a child device by mounting a child type module, and can transmit and receive a wireless signal only to and from the parent device 1.

As a result, the base unit 1 and the sub-base unit 2 can communicate with the two wireless repeaters 4, and perform a hands-free call for a call from the intercom slave 5, and the intercom slave 5.
Can be used to perform a hands-free call and to monitor the door phone handset 5. Therefore, if the door phone slave unit 5 and the wireless repeater 4 are constructed, the master unit 1 and the sub master unit 2 can be installed or moved to an arbitrary place, which is convenient, and the wireless repeater is high. If the indoor unit 4 is provided indoors, transmission and reception of wireless signals between the master unit 1 and the auxiliary master unit 2 can be performed indoors, and a good radio wave condition can be maintained.
Wireless communication between the door phone slave 5 and the master unit 1 and the auxiliary master unit 2 can be performed comfortably.

The base unit 1 can make a hands-free extension call that calls the sub-base unit 2, and the sub-base unit 2 can make a hands-free extension call that calls the base unit 1 and another sub-base unit 2. Further, the handset 1 (# 4) can make a hands-free extension call that calls the base unit 1 (# 1).

When the hands-free call is made between the master unit 1, the auxiliary master unit 2, and the slave unit 3, a voice signal is forcibly sent to the other party by pressing the talk button 15 for a predetermined time or more. It is possible to perform the operation of the forced transmission to be transmitted and the forced reception to force the voice signal from the other party to be output as voice.

Here, all wireless intercoms 1
After performing an operation for answering the call, a predetermined call preparation sound is output until a communication path with the other party is formed. This is to prevent the beginning of the word from being interrupted by speaking immediately after the response operation.

A plurality of communication channels are provided for a call between the doorphone handset 5 and the wireless interphones 1 and 2 and a call between the interphones 1 and 3. By automatically determining an available channel, a communication pair can be formed by the number of communication channels. Thereby, a plurality of pairs can talk at the same time in parallel. If there is no available communication channel, the wireless repeater 4 and the wireless intercoms 1 to 3 display a communication channel non-secure display.

Also, in this system, when the wireless call device 6 is operated, a wireless call signal is output, and the wireless repeater 4 accepts the signal and calls all of the intercoms 1-3. At this time, a predetermined call ringing sound is output from the wireless intercoms 1 to 3, and the call LED corresponding to the operated wireless call device 6 is turned on. By this, 2 away from each other
The call calling and the radio communication can be used properly depending on the necessity in the place.

When the level of the output wireless calling signal is low because the battery of the wireless call device 6 is running out, the wireless intercoms 1 to 3 notify the wireless call device of running out of battery, for example, the battery of the wireless calling device. Output sound.

Also, the wireless intercoms 1 to 3 receiving a call call can perform a hands-free call for a call from the intercom slave unit 5. This is done after the call ends.

Here, any one of the wireless intercoms 1 to 3, for example, the base unit 1, receives a wireless call signal from the wireless call device 6, and transfers the call signal to the other wireless interphones 2, 3. In this case, a call from the wireless call device 6 can be handled without the wireless repeater 4. Note that the frequency of the call signal from the wireless call device 6 may be converted and transferred. In this way, it is possible to cope with both the call calling system and the radio communication system having different usable frequencies according to the regulations. Also,
If the call signal is amplified and transferred, the wireless call signal can be transferred to distant wireless intercoms 2 and 3, thereby improving the reliability of the system.

In FIG. 7, the wireless repeater 4
Has a configuration in which a two-wire signal line L derived from the doorphone slave unit 5 is connected to the two-wire signal line connection terminal (not shown), and is used in an existing wired intercom system. Can be diverted,
There is an advantage that a wireless intercom system can be easily constructed. The present invention is not limited to this, and for example, the wireless repeater 4 and the door phone slave device 5 may be connected by a coaxial line.

[0056]

As can be understood from the above description, in the wireless intercom system according to the first aspect of the present invention, by transmitting and receiving a predetermined wireless signal between the wireless interphones, Since the configuration is such that a hands-free extension call is made, the wireless intercom can be installed or moved to an arbitrary location and a hands-free extension call can be made anywhere, which is highly convenient.

Further, it is possible to easily add a wireless intercom without adding wiring or performing any construction.

[0058] In the wireless intercom system according to the second aspect, the wireless intercom includes a speech signal to be transmitted to the other party and a speech volume adjusting means for adjusting the level of the audio signal input from the other party. Therefore, even if the wireless intercoms in the call state are close to each other and howling or the like occurs due to sound wraparound, it can be dealt with by setting the appropriate call volume by a simple operation of the call volume adjusting means.

In the wireless intercom system according to the third aspect, when a call for an extension call is received, a predetermined extension ring tone is created by the extension ring tone creating means and the created extension ring tone is output. It is not necessary to specify a ringing tone pattern in a data frame of a wireless extension calling signal transmitted from a calling side,
The extension ring tone generated independently on the called side is output, and a high-quality extension ring tone can be output regardless of the radio wave condition.

In the wireless intercom system according to the fourth aspect, after the wireless intercom has made a call for an extension call, the voice called to the called side is transmitted as a wireless signal, so that the intercom on the called side is transmitted. Even if the number is large, the voice can be transmitted to the called side without lowering the level of the voice, and the called side can be called with high quality voice.

In the wireless intercom system according to the fifth aspect, a hands-free extension call is made by using the hands-free calling means of the calling side without using the hands-free calling means of the called side. Only at the time, the switching operation between the transmission mode and the reception mode is performed,
The switching time until the switching is completed is halved compared to the related art, so that the beginning of the voice is less likely to occur, and the call can be clarified.

In the wireless intercom system according to the sixth aspect, the intercom slave unit and the wireless repeater are connected by a signal line, and the wireless intercom transmits and receives wireless signals to and from the wireless repeater. If a repeater is installed, the wireless intercom can be installed or moved to any location, which is highly convenient.

If a wireless repeater is provided indoors, transmission and reception of wireless signals to and from the wireless interphone can be performed indoors, and good radio wave conditions can be maintained. You can make hands-free calls comfortably.

In the wireless intercom system according to the seventh aspect, the intercom slave unit and the wireless repeater are connected by a signal line, and the wireless intercom transmits and receives wireless signals to and from the wireless repeater. If a repeater is installed, the wireless intercom can be installed or moved to any location, which is highly convenient.

Further, if a wireless repeater is provided indoors, transmission and reception of wireless signals to and from the wireless intercom can be performed indoors, and the radio wave condition can be kept good. You can make hands-free calls comfortably.

In the wireless intercom system according to the eighth aspect, when a wireless call device that outputs a wireless signal by manual operation is combined, when the wireless call device is manually operated to output a wireless signal, the wireless intercom outputs a predetermined call signal. Since the call is made, it is possible to selectively use the call call and the radio call as necessary at two places apart from each other.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a main configuration of a wireless intercom system of the present invention.

FIG. 2 is a diagram showing a first example of a main part configuration of a wireless intercom of the present invention.

FIG. 3 is a diagram showing a second example of a main configuration of the wireless intercom according to the present invention.

FIG. 4 is a diagram showing a third example of a main part configuration of the wireless intercom of the present invention.

FIG. 5 is a diagram showing a fourth example of a main part configuration of the wireless intercom of the present invention.

FIG. 6 is a time chart for explaining the operation of the wireless intercom in FIG. 5;

FIG. 7 is a diagram showing another example of a main part configuration of the wireless intercom system of the present invention.

FIG. 8 is a diagram showing an appearance of a conventional intercom system.

FIG. 9 is a diagram showing a main configuration of a conventional intercom system.

FIG. 10 is a time chart for explaining an operation of a conventional intercom system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wireless intercom parent | base station 2 ... Wireless intercom secondary parent | base station 3 ... Wireless intercom slave unit 4 ... Wireless repeater 5 ... Doorphone slave unit 6 ... Wireless call equipment 11 ... Hands-free communication circuit 21: Call volume adjustment switch 22: Extension ring tone generation circuit L: 2-wire signal line

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Okumura 1048 Kazuma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. Inventor Hiroaki Takeyama 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works Co., Ltd.

Claims (8)

[Claims] 1. A wireless intercom having hands-free communication means for comparing the level of an audio signal to be transmitted to a communication partner with the level of an audio signal input from the communication partner, and validating the audio signal having the higher level. By combining a plurality, between the wireless intercom, by transmitting and receiving a predetermined wireless signal,
A wireless intercom system configured to make a hands-free extension call between the wireless interphones. 2. The wireless intercom according to claim 1, wherein the wireless intercom includes a voice signal to be transmitted to a communication partner and a communication volume adjustment unit for adjusting a level of the audio signal input from the communication partner. Wireless intercom system. 3. The wireless intercom according to claim 1, further comprising: an extension ring tone generating means for generating a predetermined extension ring tone, wherein the extension is provided when a call for an extension call is received. A wireless intercom system configured to generate a predetermined extension ring tone by a ring tone generating means and output the generated extension ring tone. 4. The wireless intercom according to any one of claims 1 to 3, wherein, after calling for an extension call, until a response is received, the wireless intercom uses a voice to the called wireless intercom. A wireless intercom system in which a call can be made, and the called voice is transmitted as the wireless signal to a wireless intercom on the called side. 5. A configuration according to any one of claims 1 to 4, wherein a hands-free extension call is made using the calling-side hands-free communication means without using the called-side hands-free communication means. Wireless intercom system. 6. The wireless intercom according to claim 1, further comprising a wireless repeater in which an intercom slave unit is connected by a signal line, wherein the wireless intercom is provided with a predetermined distance from the wireless repeater. A wireless intercom system configured to perform a hands-free call with the intercom slave unit by transmitting and receiving a wireless signal. 7. The wireless intercom according to claim 1, further comprising one or more wireless repeaters connected to the intercom slave units by signal lines, wherein the wireless intercom is connected to the wireless repeater. A wireless intercom system configured to perform hands-free communication with the intercom slave unit by transmitting and receiving a predetermined wireless signal between the wireless intercom systems. 8. The wireless call device according to claim 1, further comprising a wireless call device that outputs a wireless signal by manual operation, wherein when the wireless call device is manually operated to output a wireless signal, the wireless call device outputs the wireless signal. The wireless intercom is a wireless intercom system configured to make a predetermined call call.