JP2002199114A - Wireless interphone and wireless interphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless interphone capable of forced transmitting through a simple operation. SOLUTION: In the wireless interphone 1 provided with a hands-free call function, when prescribed forced transmission is instructed, only a voice signal which should be sent out to a called party is amplified and is subjected to wireless transmission to the called party.

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, wireless intercom systems have been introduced in general homes and the like. By sending and receiving a predetermined wireless signal between wireless intercoms,
There is a system that enables hands-free alternating calls between a door phone handset and other wireless intercoms.

[0003] Such a system has an external appearance as shown in Fig. 6, and an intercom slave unit and a wireless intercom have an internal configuration as shown in Fig. 7 in order to enable transmission and reception of the above-mentioned wireless signal. are doing.

[0004] The wireless intercom 100 has a control circuit 110 for controlling the wireless intercom 100.
A hands-free call circuit 111 for making a hands-free call using the speaker 112 and the microphone 113;
A doorphone response button 114 for performing a response operation to a call from the doorphone slave 200, a radio circuit 115 for transmitting and receiving a wireless signal between the doorphone slave 200 and another wireless intercom 100, Power supply 11
6 and the call detection from the intercom 200 and the intercom 20
And a doorphone interface circuit 117 for forming a communication path between the doorphone and the communication terminal.

[0005] The hands-free communication circuit 111 is 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
1, AMP2, and compares the levels of the respective audio signals input thereto.
MP1 and 2 are operated to amplify. That is, the amplifier control circuit 111A operates the amplifier AMP1 if the level of the audio signal input from the microphone 113 is higher. 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 112 is higher, the amplifier AMP2 is operated. 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.

[0008] One doorphone handset 200 includes a radio circuit 210 for transmitting and receiving a wireless signal to and from the wireless intercom 100, and a call circuit 213 for enabling a call using the speaker 211 and the microphone 212. ,
A call button 214 and a battery 215 for operating the intercom slave 200 are provided.

[0009]

However, in the above-described conventional wireless intercom system, the wireless interphone operates and amplifies an amplifier to which a high-level audio signal is input, as described above. However, the input of the other audio signal is invalid.For example, when the sound of a TV or the noise of road construction is noisy around the wireless intercom, only the audio signal due to the noise is amplified, and the audio signal coming from the other party is amplified. Is invalid, and the voice signal coming from the other party is not output from the speaker, and the other party must speak in a voice louder than the sound of the other party in order to output the voice signal from the speaker.

[0010] The present invention is proposed to solve the above-mentioned problem, and comprises a wireless intercom that can perform forced transmission and reception by a simple operation, and is configured using the wireless intercom. It aims to provide a wireless intercom system.

[0011]

In order to achieve the above object, in the wireless intercom according to the first aspect of the present invention, when a predetermined forced transmission is instructed, only a voice signal to be transmitted to the other party is transmitted. Amplified and wirelessly transmitted to the other party.

[0012] In the wireless intercom according to the second aspect, when a predetermined forcible receiving instruction is given, only the audio signal input from the other party is amplified and output as audio.

According to a third aspect of the present invention, there is provided a wireless intercom system comprising a combination of the wireless intercom according to the first or second aspect and a wireless repeater in which a doorphone slave is connected by a signal line. In this configuration, a predetermined wireless signal is transmitted / received to / from the wireless repeater to perform a hands-free call with the intercom slave unit.

According to a fourth aspect of the present invention, there is provided a wireless intercom system comprising a combination of the wireless intercom according to the first or second aspect and one or a plurality of wireless repeaters each having a doorphone slave connected to a signal line. The wireless interphone is configured to perform a hands-free call with the intercom slave unit by transmitting and receiving a predetermined wireless signal to and from the wireless repeater.

In the wireless intercom system according to the fifth aspect, hands-free communication between the wireless interphones is performed by transmitting and receiving a predetermined wireless signal between the wireless interphones.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating an example of a main configuration of a wireless intercom system configured using the wireless intercom of the present invention. This is configured by combining a wireless repeater 3 in which a doorphone slave 2 is connected by a two-wire signal line L and a wireless interphone 1.

Here, the wireless relay device 3 and the doorphone slave device 2 are connected by the two-wire signal line L because of the two-wire signal line used in the existing wired intercom system. This is to make it possible to divert.
In this case, by using the existing two-wire signal line, the wireless intercom system can be easily constructed, which is convenient. The connection is not limited to the use of the two-wire signal line L, but may be performed using, for example, a coaxial line.

The wireless intercom 1 has a function of transmitting / receiving a wireless signal to / from a communication partner to perform a hands-free alternate call. A control circuit 10 for controlling the wireless intercom 1, a speaker 12 and a microphone 13 are used. A hands-free communication circuit 11 for enabling a hands-free call, a door phone response button 14 for performing a response operation to a call from the door phone slave 2, and a door phone slave 2 and another wireless intercom 1. A wireless circuit 15 for transmitting and receiving wireless signals, a power supply 16, and a power supply 1
Charging circuit 17 for charging rechargeable battery 18 with power supply 6
And a forced transmission button 19.

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
1, AMP2, and compares the levels of the respective audio signals input thereto.
MP1 and 2 are operated to amplify. That is, if the level of the audio signal input from the microphone 13 is higher, the amplifier control circuit 111A operates the amplifier AMP1. 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. 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.

The door phone handset 2 has a function for a visitor to operate to call a resident and to talk with a responding resident.
A call circuit 23 for transmitting and receiving a control signal and an audio signal to and from the wireless repeater 3 via a two-wire signal line L to enable a call using the speaker 21 and the microphone 22; 24.

The wireless repeater 3 includes a wireless circuit 30 for transmitting and receiving wireless signals to and from the wireless intercom 1, a call detection from the intercom 2, a power supply to the intercom 2, and a communication path between the intercom 2. And a power supply 32. The wireless relay device 3 has a function of reducing the processing load on the doorphone slave device 2 by relaying the direct wireless communication between the doorphone slave device 2 and the wireless intercom 1 in the related art.

With this configuration, when the call button 24 of the intercom slave unit 2 is operated, the following operation is performed. This will be described with reference to the time chart of FIG.

That is, when the call button 23 of the intercom slave 2 is operated, a predetermined back tone is output from the intercom slave 2. At this time, the wireless repeater 3
Detects the voltage drop of the signal line L due to the operation of the call button 23 and starts supplying power to the intercom slave unit 2.

Then, a wireless calling signal is output from the wireless repeater 3, and the wireless intercom 1 receives the signal and outputs a predetermined ringing sound. On the other hand, if there is a response operation on the wireless intercom 1,
The wireless repeater 3 receives this, forms a communication path between the wireless intercom 1 and the intercom slave unit 2, and enables communication between them. Note that the wireless intercom 1 returns to the original standby state if there is no response operation for a predetermined time after outputting the ringing tone.

As described above, since the wireless intercom 1 makes a hands-free alternate call with the intercom slave 2, during the call, the sound around the intercom 2 will be There is a case where the voice spoken on the wireless intercom 1 side is larger than the wireless intercom 1 side and is not transmitted to the intercom slave unit 2 side.

In such a case, if the forced transmission button 19 is operated, the hands-free communication circuit 11 makes the voice input to the microphone 13 effective and amplifies, that is, the amplifier A
By operating MP1, the audio signal input to the amplifier AMP1 is amplified. As a result, the forced transmission is performed, and the voice spoken on the wireless intercom 1 side is transmitted to the door phone slave 2 irrespective of the loudness of the surrounding voice on the door phone slave 2 side. I can hear you. When the operation of the forced transmission button 19 is stopped, the forced transmission is canceled and the operation returns to the normal alternating call.

If there is a call termination operation such as operating the intercom answering button 14 again on the wireless intercom 1, the wireless repeater 3 accepts this operation and disconnects the communication path between the wireless intercom 1 and the intercom slave 2. I do. Note that, even if there is no operation to end the call on the wireless intercom 1, the call path is automatically cut off after a certain period of time from the start of the call.

FIG. 3 is a diagram showing another example of the main configuration of the wireless intercom of the present invention. This wireless intercom 1A replaces the forced talk button 19 described above,
A forced answering button 20 is provided. When the wireless intercom 1A having such a configuration is applied in place of the wireless intercom 1, the wireless intercom system operates as shown in the time chart of FIG.

That is, during a call with the intercom slave 2, the sound around the wireless intercom 1 is louder than the intercom 2 and the voice spoken by the intercom 2 is transmitted to the intercom 1. May not be transmitted.

In such a case, by operating the compulsory receiving button 20, the hands-free communication circuit 11
The audio to be output to the amplifier AMP2 is made effective, that is, the amplifier AMP2 is operated to amplify the audio signal input to the amplifier AMP2. As a result, the forcible reception is executed, and the voice spoken on the doorphone handset 2 side is transmitted to the wireless interphone 1 side regardless of the volume of the voice around the wireless intercom 1 side, so that the voice can be heard from the wireless interphone 1 side. become. If the operation of the forced reception button 20 is stopped, the forced reception is canceled and the normal alternate call is returned.

The wireless intercoms 1 and 1A may have both a forced transmission button 19 and a forced reception button 20, and one button may be used for each of the forced transmission and the forced reception. May be performed. Furthermore,
Without providing independent buttons such as the forced transmission button 19 and the forced reception button 20, the operation of the forced transmission and the forced reception can be performed by pressing an existing button, for example, the door phone response button 14 for a predetermined time or more. You may do so.

FIG. 5 is a diagram showing the appearance of a specific configuration of the wireless intercom system of the present invention. In this device, two doorphone handsets 2 installed at the entrance etc.
A wireless repeater 3 (# 1, # 2) is connected to each of (# 1, # 2) via a two-wire signal line L. In addition, wireless intercom 1
(# 1 to # 4), a plurality of wireless call devices 4 which output a wireless calling signal by manual operation (operation of push buttons, switches, pull cords, etc.) are provided.

Wireless intercom (# 1 to # 4)
Is equipped with different types of wireless modules depending on the purpose of use, so that
Can be set as a slave unit. Here, the wireless intercom 1 (# 1) is a master unit by mounting a master module, and the wireless repeater 3, the sub master unit 1
(# 2, # 3), it is possible to transmit and receive wireless signals to and from the handset 1 (# 4).

The wireless intercom 1 (# 2,
# 3) is a sub-base unit by mounting both the master module and the sub-module. The wireless repeater 3, the base unit 1 (# 1), and the other sub-base units 1 (# 2, # 3). , The wireless signal can be transmitted / received to / from the slave unit 1 (# 4).

Further, wireless intercom 1 (# 4)
Is a slave unit by mounting a slave module, and can transmit and receive wireless signals only to and from the master unit 1 (# 1).

As a result, the master unit 1 (# 1), the sub master unit 1
In (# 2, # 3), communication with the two wireless repeaters 3 can be performed, and a call for a call from the doorphone slave 2 as described above, a call for calling the doorphone slave 2, and a doorphone slave 2 Can be monitored. In addition, master unit 1 (#
In 1), the extension call that called the sub master unit 1 (# 2, # 3) can be made, and the sub master unit 1 (# 2, # 3) can communicate with the master unit 1 (# 1).
And other extension base units (# 2, # 3). Further, in the slave unit 1 (# 4), an extension call that calls the master unit 1 (# 1) can be made.

Here, during a predetermined time after the other intercom 1 is called, the calling side can speak to all of the called sides to make a call. If there is a response operation on the called side before the end of the time, a communication path with the called side is formed, and a one-to-one call between the called side and the called side becomes possible. In this case, also in the call, both the calling side and the called side can perform the above-described forced transmission and forced reception. In the intercom not participating in the call, it is possible to make a call with the intercom slave unit 2 as described above or to receive a call call as described later.

Note that all the intercoms 1 perform a predetermined call until a call path is established between the intercom 1 and the intercom 1 after performing a response operation to a call from the intercom slave 2 or another intercom 1. Outputs the preparation sound. 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 intercom slave unit 2 and the interphone 1 and a call between the intercom 1 and a vacant channel is automatically determined when a certain pair makes a call. By,
As many as the number of call channels, call pairs can be formed. Thereby, a plurality of pairs can talk at the same time in parallel. If there is no available communication channel, the wireless repeater 1 and the wireless intercom display a communication channel non-secure display.

When the wireless call device 4 is operated,
Since the wireless call signal is output, the wireless repeater 3 receives the signal and calls all the intercoms 1. At this time, a predetermined call ringing sound is output from the wireless intercom 1, and a call LED corresponding to the operated wireless call device 4 is lit. When the level of the output wireless paging signal is low due to the battery of the wireless call device 4 being exhausted, the wireless intercom 1 outputs a wireless call device battery exhaustion notification, for example, a wireless call device battery exhaustion notification sound.

Note that the wireless intercom 1 receiving the call can talk with the intercom slave unit 2 as described above.
This is performed after the call with the door phone 2 ends.

Here, one of the wireless intercoms 1, for example, the base unit 1 (# 1) receives a wireless calling signal from the wireless calling device 4 and sends the calling signal to another wireless intercom 1. The call may be forwarded, so that a call from the wireless call device 4 can be handled without the wireless repeater 3. Note that the frequency of the call signal from the wireless call device 4 may be converted and transferred. This way,
According to regulations, it is possible to support both a call calling system and a radio communication system having different usable frequencies. Also, if the call signal is amplified and transferred, the wireless call signal can be transferred to the remote wireless intercom 1 and the reliability of the system is improved.

[0045]

As can be understood from the above description, in the wireless intercom according to the first aspect of the present invention,
When a predetermined forcible transmission instruction is given, only the audio signal to be transmitted to the other party is amplified and wirelessly transmitted to the other party, so that the forced transmission can be performed with a simple operation. A good call can be made regardless of the noise around the other party.

In the wireless intercom according to the second aspect, when a predetermined forcible receiving instruction is given, only the voice signal input from the other party is amplified and output as voice, so that only a simple operation is required. Forced listening can be performed, and good calls can be made regardless of the noise around the wireless intercom.

In the wireless intercom system according to the third 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 intercom can be performed indoors, and good radio wave conditions can be maintained. Call can be done comfortably.

In the wireless intercom system according to the fourth 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 intercom can be performed indoors, and the radio wave condition can be kept good. Call can be done comfortably.

In the wireless intercom system according to the fifth aspect, a hands-free communication between the wireless interphones is performed by transmitting and receiving a predetermined wireless signal between the wireless interphones. It can be conveniently placed or moved to a location to make a hands-free call with another wireless intercom.

[Brief description of the drawings]

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

FIG. 2 is a time chart for explaining an operation of the system of FIG. 1;

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

FIG. 4 is a time chart for explaining an operation of the system of FIG. 3;

FIG. 5 is a diagram showing an external appearance of a specific configuration of the wireless intercom system.

FIG. 6 is a diagram showing an appearance of a conventional wireless intercom system.

FIG. 7 is a diagram showing an internal configuration of a conventional wireless intercom system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wireless intercom 2 ... Door phone slave unit 3 ... Wireless repeater 4 ... Wireless call equipment 11 ... Hands-free communication circuit 19 ... Forced transmission button 20 ... Forced reception button 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 Kadoma Kadoma, Kadoma-shi, Osaka Matsushita Electric Works F-term (reference) 5K027 AA09 AA12 FF03 FF25 5K038 AA05 CC00 DD08 DD16 EE05 FF01

Claims (5)

[Claims] 1. A wireless intercom having a hands-free call function, wherein when a predetermined forcible transmission instruction is given, only a voice signal to be transmitted to a call partner is amplified and wirelessly transmitted to the call partner. intercom. 2. A wireless intercom having a hands-free call function, wherein when a predetermined forcible reception instruction is given, only a voice signal input from a call partner is amplified and output as voice. 3. A wireless interphone according to claim 1 or 2, wherein the wireless interphone is combined with a wireless repeater in which an intercom slave unit is connected by a signal line. so,
A wireless intercom system configured to perform a hands-free call with the intercom slave unit by transmitting and receiving a predetermined wireless signal. 4. The wireless intercom according to claim 1 or 2, and the intercom slave unit are connected by a signal line.
The wireless intercom is configured by combining one or a plurality of wireless repeaters, and the wireless intercom transmits and receives a predetermined wireless signal to and from the wireless repeater, so that hands-free communication with the intercom slave unit is performed. Wireless intercom system with a configuration. 5. The wireless intercom system according to claim 3, wherein a hands-free call is made between the wireless interphones by transmitting and receiving a predetermined wireless signal between the wireless interphones.