JPH0514457A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To provide the cordless telephone set capable monitoring not only the room installed with a master set but also the room installed with each slave set. CONSTITUTION:This cordless telephone set consists of a master set 1 and one or more slave sets, and is provided with room monitor function monitoring a room based on a PB signal from an external line, and the monitor function is provided with a PB signal detection circuit 24 discriminating a PB signal from an external line and with a central control circuit 19 which sends a signal used to bring a specific slave set only into the monitor state to relevant slave set when the PB signal indicates only the specific slave set based on the result of discrimination by the PB signal detection circuit, sends sequentially a signal used to bring plural slave sets sequentially into the monitor state to the plural slave sets when the PB signal indicates plural slave sets, and sends a signal used to bring all slave sets simultaneously to all the slave sets when the PB signal depicts all the slave sets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a master unit connected to a telephone line and at least one slave unit connected to the master unit by a wireless line. The present invention relates to a cordless telephone having a room monitor function capable of performing room monitor based on the above.

[0002]

2. Description of the Related Art With the diversification of lifestyles, telephones are not only used as a means for talking with the other party,
More features are required.

In order to meet such a demand, for example, a cordless telephone consisting of one master and a plurality of slaves has been rapidly popularized in recent years. There is also provided such a cordless telephone with an answering machine function and an outside line remote function that can be operated from an outside line.

Among these, in the cordless telephone having the outside line remote function including the room monitor function, the room monitor function is conventionally added only to the master unit.

In other words, when a monitor signal is sent from the telephone at the destination after the external line remote mode and the room monitor mode have been entered by remote operation from the external line, the microphone of the base unit is activated to turn on the base unit. It picks up the sound in the room where it is installed, and sends the picked up sound to a telephone outside the home through a telephone line.

[0006]

As described above, in the conventional cordless telephone having the outside line remote function, only the sound in the room in which the master unit is installed can be monitored when the room monitor mode is set. .

Therefore, even if it is desired to monitor a room in which each slave is installed in addition to a room in which the master is installed, the conventional cordless telephone cannot monitor such a room. There was such a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cordless telephone capable of monitoring not only a room in which a master device is installed but also a room in which each slave device is installed. It is in.

[0009]

In order to solve the above-mentioned problems, the cordless telephone of the present invention includes a master unit connected to a telephone line and at least one or more units each connected to the master unit by a wireless line. In the room monitor function capable of performing room monitoring based on the monitor signal from the outside line, the master unit distinguishes the monitor signal from the outside line, and the judging means. Based on the determination result, when the monitor signal indicates only a specific slave unit, a control means for performing control to transmit a signal for setting only the specific slave unit to the monitor state to the slave unit And

Further, in the cordless telephone of the present invention, the master unit shows the discrimination unit for discriminating the monitor signal from the outside line, and the slave unit having plural monitor signals based on the discrimination result by the discrimination unit. In some cases, a control means is provided for performing control to sequentially transmit a signal for sequentially monitoring the plurality of slave units to the plurality of slave units.

Further, in the cordless telephone of the present invention, the master unit discriminates the monitor signal from the outside line, and when the monitor signal indicates all the slave units based on the discrimination result by the discriminator. , And a control means for performing control for simultaneously transmitting a signal for simultaneously monitoring all the slaves to all the slaves.

[0012]

When the monitor signal from the outside line indicates only a specific slave unit, the control means controls the radio unit to send a signal to the slave unit to monitor only the specific slave unit. To send.

Further, when the monitor signal from the outside line indicates a plurality of slave units, the control means controls the radio unit to sequentially monitor a plurality of slave units. To sequentially send to the child device.

Further, when the monitor signals from the outside line indicate all the slave units, the control means controls the radio unit so that all the slave units receive signals for simultaneously monitoring all the slave units. To send at the same time.

[0015]

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

FIG. 1 is a block diagram showing an electrical configuration of a base unit 1 of the cordless telephone of the present invention, and FIG. 2 is a block diagram showing an electrical configuration of each cordless handset 4, 5, 6 of the cordless telephone of the present invention. Is. However, in this embodiment, the number of slave units is three.
It is used as a base.

In FIG. 1, the base unit 1 sends out an answering signal to the telephone line 2 by a telephone line drive circuit 11 for transmitting and receiving a voice signal and the like to and from a partner telephone (not shown) via the telephone line 2. Answering machine answering circuit 12, switch 13 for selecting whether or not to send the signal of answering machine answering circuit 12 to telephone line 2, answering machine recording for recording the voice signal sent from telephone line 2 at the time of answering machine Circuit 1
4, a switch 15 for selecting whether or not to record a voice signal sent from the telephone line 2, a radio unit 16 for transmitting and receiving a signal to and from each of the slave units 4, 5 and 6, a telephone line Incoming call detection circuit 1 for detecting an incoming call signal sent from 2.
8, a central control circuit 19 for controlling the above circuits, a room monitor microphone 20, a switch 22 for selecting whether or not to send a sound signal from the microphone 20 to the telephone line 2, and a PB signal from the telephone line 2. It is composed of a PB signal detection circuit 24 for detecting and analyzing.

Further, the radio unit 16 has a transmitting circuit 16 for transmitting a signal from the telephone line 2 to each of the slave units 4, 5 and 6.
1, a transmission switch 162 for selecting whether or not to transmit a signal from the telephone line 2 to the respective slave units 4, 5, 6;
A receiving circuit 163 for sending signals from the telephones 5 and 6 to the telephone line 2, a receiving switch 164 for selecting whether or not to send signals from the slaves 4, 5 and 6 to the telephone line 2, and a transmitting circuit 161. And a receiving circuit 163, and a radio control circuit 165.

The telephone line 2 for connecting to the other party's telephone has a telephone line drive circuit 11 and an incoming call detection circuit 18.
And are connected. The output of the telephone line drive circuit 11 is connected to the input of the PB signal detection circuit 24, is also connected to the input of the absence recording circuit 14 via the switch 15, and is transmitted via the transmission switch 162. It is connected to the input of circuit 161.

The input of the telephone line drive circuit 11 is
The output of the answering machine 12 is connected via the switch 13, the output of the microphone 20 is connected via the switch 22, and the output of the receiving circuit 163 is connected via the receiving switch 164. .

Further, the output of the incoming call detection circuit 18 and the output of the PB signal detection circuit 24 are connected to a central control circuit 19, respectively, and the central control circuit 19 outputs the respective circuits at respective timings. A control signal is being output. Further, the switches 13 and 1 from the central control circuit 19
A switching control signal is output to each of 5, 22, 162 and 164 at respective timings.

In the above structure, the central control circuit 19 is
It is configured to include software that operates on a microcomputer. Further, the central control circuit 19 stores a personal identification number for comparison with a signal indicating the analysis result from the PB signal detection circuit 24, and when the analysis result and the stored personal identification number match, Control for shifting the master unit 1 to the mode indicated by the secret code is performed. Further, when the PB signal is input subsequent to the personal identification number, control is performed to shift the master unit 1 to the room monitor mode.

Further, the radio device control circuit 165 has a data generation function for generating data indicating the identification code of each of the slave units 4, 5 and 6, and causes the transmission circuit 161 to transmit a signal including this data. It has become.

In FIG. 2, the slave unit 4 is composed of a radio unit 41 for exchanging radio signals with the master unit 1 and a microphone 43.

The radio unit 41 also includes a reception circuit 411 for receiving a signal from the master unit 1, a transmission circuit 413 for transmitting a signal from the microphone 43 to the master unit 1, and a microphone 4.
A switch 414 for selecting whether or not to transmit a signal from the master unit 3 to the base unit 1, and a receiving circuit 411 and a transmitting circuit 413.
And a wireless device control circuit 415 for controlling

Since the internal configurations of the handset units 5 and 6 are similar to the internal configuration of the handset unit 4 described above, a code of the last 1 digit and the last 2 digits following the code of the head portion for distinguishing the handset unit. The same reference numerals are given to the parts, and detailed description will be omitted.

Next, the answering machine response operation and the room monitor operation of the cordless telephone having the above configuration will be described.

When an incoming call signal is sent from the telephone line 2, the incoming call detection circuit 18 of the base unit 1 detects this and sends the incoming call detection signal to the central control circuit 19.

When the central control circuit 19 recognizes from the incoming call detection signal that there is an incoming call, the central control circuit 19 controls the telephone line drive circuit 11 to close the base unit 1 and the telephone line 2. At the same time, the central control circuit 19 closes the switch 13 and drives the answering machine response circuit 12.
As a result, the response message from the answering / answering circuit 12 is sent to the telephone line 2 via the switch 13 and the telephone line driving circuit 11.

When a PB signal is sent from the other party's telephone while sending this response message, this PB signal is sent to the PB signal detection circuit 2 via the telephone line drive circuit 11.
4 and is analyzed here, and the analysis result is sent to the central control circuit 19.

The central control circuit 19 compares the data (number) indicated by this analysis result with a personal identification number stored in advance, and when both numbers match, the outside line remote which accepts remote operation from the outside line. Switch to mode.

Here, the outside line remote mode means that in the case of an answering machine, the recording contents of the message are reproduced from the telephone at the destination, the answering mode is changed, the room monitor mode is set, and the microphone is picked up. It is a mode in which the sound is sent to the telephone at the destination.

Then, when the PB signal for shifting to the room monitor mode is sent following the above-mentioned personal identification number, the central control circuit 19 performs the following in accordance with the contents of the sent PB signal. The four operations shown are performed.

(1) When the PB signal indicates only the master unit 1.

In this case, the central control circuit 19 closes the switch 22 and sends the sound picked up by the microphone 20 to the telephone at the destination via the telephone line drive circuit 11 and the telephone line 2. This operation is a general operation also performed in the conventional cordless telephone.

(2) If the PB signal is a specific slave unit (for example,
When only child device 4) is shown.

In this case, the central control circuit 19 sends a control signal for causing the slave unit 4 to perform a transmission operation to the wireless device control circuit 165.
Send to. The radio device control circuit 165 drives the transmission circuit 161 based on this control signal, and transmits a signal indicating the room monitor mode to the slave device 4. At the same time,
The central control circuit 19 closes the reception switch 164.
Further, the radio device control circuit 165 drives the reception circuit 163 to put the reception circuit 163 in the reception state.

On the other hand, the transmission signal from the master unit 1 is received by the reception circuit 411 of the slave unit 4, and is transmitted to the radio unit control circuit 41.
5 is sent. However, the other handset devices 5 and 6 do not have the transmission signal sent to themselves (this judgment is made by comparing the identification code included in the transmission signal with the identification code assigned to itself). It does by doing.)
Therefore, the other handset devices 5 and 6 do not perform the receiving operation.

The radio control circuit 415 closes the switch 414 based on the signal indicating the room monitor mode and drives the transmission circuit 413.

As a result, the sound picked up by the microphone 43 of the slave unit 4 is given to the transmitting circuit 413, converted into a radio wave that can be transmitted by the transmitting circuit 413, and transmitted to the master unit 1.

In the base unit 1, the transmission circuit 16 receives this transmitted radio wave.
After receiving by 3 and converting to the original signal, the transmission switch 16
4. Send to the telephone line 2 via the telephone line drive circuit 11.

That is, when the cordless telephone receives the PB signal indicating the room monitor mode in the outside line remote mode, the sound picked up by the microphone 43 of the handset 4 is sent to the telephone line 2 and sent to the telephone at the destination. It will be.

The above operation is the same for the slaves 5 and 6.

(3) When the PB signal indicates a plurality of slave units (for example, slave units 4 and 5).

In this case, the central control circuit 19 first sends a control signal to the wireless device control circuit 165 to cause the slave unit 4 to perform a transmission operation for a certain period of time, and then performs a transmission operation to the slave unit 5 for a certain period of time. A control signal to cause the wireless device control circuit 165 to be transmitted.

That is, the master unit 1 operates so as to perform communication with each slave unit 4, 5 by time-divisionally assigning one control channel and communication channel to each slave unit 4, 5.

The radio device control circuit 165 drives the transmission circuit 161 based on the control signal sent in this time division, and first sends a signal indicating the room monitor mode to the slave device 4. At the same time, the central control circuit 19 closes the reception switch 164. In addition, the radio device control circuit 16
5 drives the receiving circuit 163 to put the receiving circuit 163 in the receiving state.

On the other hand, the transmission signal from the master unit 1 is received by the reception circuit 411 of the slave unit 4, and the radio unit control circuit 415 is received.
Sent to. However, at this time, the other handset devices 5 and 6 are not the signals whose transmission signals have been sent to themselves (this judgment is made based on the identification code included in the transmission signal and the identification code assigned to itself). Therefore, the other slaves 5 and 6 do not perform the receiving operation.

The radio control circuit 415 closes the switch 414 based on the signal indicating the room monitor mode and drives the transmission circuit 413.

As a result, the sound picked up by the microphone 43 of the slave unit 4 is given to the transmitting circuit 413, converted into a radio wave that can be transmitted by the transmitting circuit 413, and transmitted to the master unit 1.

In the master unit 1, the transmission circuit 16 receives this transmitted radio wave.
After receiving by 3 and converting to the original signal, the transmission switch 16
4. Send to the telephone line 2 via the telephone line drive circuit 11.

When the connection state between the master unit 1 and the slave unit 4 has passed for a predetermined time, the wireless device control circuit 165 causes the slave unit 4 to operate.
Then, the connection of the wireless line with is terminated, and then a signal indicating the room monitor mode is transmitted to the child device 5.

This transmission signal is received by the reception circuit 511 of the handset 5 and sent to the radio control circuit 515.
However, at this time, the other slave units 4 and 6 are not the signals whose transmission signals have been sent to themselves (this judgment is made based on the identification code included in the transmission signal and the identification code assigned to itself). Therefore, the other slave units 4 and 6 do not perform the receiving operation.

The radio device control circuit 515 closes the switch 514 and drives the transmission circuit 513 based on the signal indicating the room monitor mode.

As a result, the sound picked up by the microphone 53 of the handset 5 is given to the transmitting circuit 513, converted into a radio wave that can be transmitted by the transmitting circuit 513, and transmitted to the base unit 1.

In the master unit 1, the transmission circuit 16 receives this transmitted radio wave.
After receiving by 3 and converting to the original signal, the transmission switch 16
4. Send to the telephone line 2 via the telephone line drive circuit 11.

When the connection state between the base unit 1 and the handset unit 5 has passed for a predetermined time, the radio unit control circuit 165 causes the handset unit 5 to operate.
Terminates the wireless line connection with. In addition, the central control circuit 1
9 cancels the room monitor mode of the base unit 1, disconnects the telephone line 2, and waits again for an incoming call.

(4) When the PB signal indicates all the slave units.

In this case, the operation (3) described above is sequentially performed in time division for each of the slave units 4, 5, and 6.

However, three sets of radio units 16 are provided in the master unit 1, and the slave units 4, 5 and 6 and the radio unit 16 in the master unit 1 are integrated into one unit.
By establishing a one-to-one correspondence relationship, the respective slave units 4, 5, 5 can be used by using the respective control channels and call channels.
It is possible to bring 6 into the monitor state at the same time. However, in this case, the monitor sound from each of the slaves 4, 5, 6 is transmitted to the master 1
Even if they are simultaneously received by the wireless communication units 16, when they are sent to the telephone line 2, it is necessary to send them in a time division manner.
Therefore, it is necessary to make the central control circuit 19 perform such time-division transmission control.

[0061]

In the cordless telephone of the present invention, not only the master unit but also each slave unit can be individually or collectively set to the room monitor mode by remote operation from the telephone at the destination. By installing the cordless handsets in separate rooms, the user, who has gone out, can monitor the room in each room by a simple operation from the telephone at the destination.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a base unit of a cordless telephone of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of each cordless handset of the cordless telephone of the present invention.

[Explanation of symbols]

1 base unit 11 Telephone line drive circuit 12 Answering circuit 16 Radio Department 161 transmitter circuit 163 receiver circuit 165 Radio control circuit 19 Central control circuit 20 microphone 24 PB signal detection circuit 4, 5, 6 cordless handset

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazushi Okada             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Within Yap Co., Ltd. (72) Inventor Masaharu Demura             22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka             Within Yap Co., Ltd.

Claims (3)

[Claims] 1. A master unit connected to a telephone line, and at least one slave unit each connected to the master unit by a wireless line. A room monitor is provided based on a monitor signal from an outside line. In a cordless telephone equipped with a room monitor function that can be performed, the master unit distinguishes a monitor signal from an outside line, and the monitor signal indicates only a specific slave unit based on the result of the judgment by the distinguishing unit. Sometimes, the cordless telephone is provided with a control unit that controls the transmission of a signal for setting only the specific slave unit to a monitor state. 2. A master unit connected to a telephone line and at least one slave unit each connected to the master unit by a wireless line, and a room monitor is provided based on a monitor signal from an outside line. In a cordless telephone having a room monitor function that can be performed, the master unit indicates a determination unit that determines a monitor signal from an outside line, and the monitor signal indicates a plurality of slave units based on the determination result of the determination unit. Sometimes, the cordless telephone is provided with control means for performing control to sequentially transmit a signal for sequentially monitoring the plurality of slave units to the plurality of slave units. 3. A master unit connected to a telephone line and at least one slave unit each connected to the master unit by a wireless line, and a room monitor is provided based on a monitor signal from an outside line. In a cordless telephone with a room monitor function that can be performed, the master unit discriminates a discriminator for discriminating a monitor signal from an outside line, and when the monitor signal indicates all the cordless handsets based on the discrimination result by this discriminator , A cordless telephone having a control means for controlling to simultaneously send signals to all the slaves to monitor all the slaves at the same time.