JP2865478B2 - Cordless telephone equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a telephone line,
The present invention relates to a cordless telephone device including a master unit having a transceiver and a slave unit wirelessly connected to the master unit.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 54-162903.
In the cordless telephone device disclosed in Japanese Patent Laid-Open Publication No. H10 (1995), when a slave responds to an incoming call from a line, the master closes the telephone line and forms a wireless line between the parent and child. I have. Also, the cordless telephone device is
A so-called extension call can be made between the parent and child. In this case, the line between the parent and child is formed by the other party answering the call from one of them.

[0003]

By the way, in such a cordless telephone device, for example, a parent device is placed in a kitchen,
Then, when the child device is placed in the children's room, the predetermined message "For example, the meal is ready"
Can be sent to the child to inform the child that the meal is ready, but in such a case, even if the transmission of the above message has been completed, the child device must end the call. Did not.

[0004]

According to the present invention, there is provided a cordless telephone apparatus comprising a master unit connected to a telephone line and having a transceiver, and a slave unit wirelessly connected to the master unit. A line between a parent and a child is formed by a response to a predetermined control signal from the parent device. Thereafter, a signal corresponding to a predetermined message is transmitted from the parent device to the child device, and transmission of a signal corresponding to the message is performed. Upon completion, the master unit transmits an end signal to the slave unit, and the slave unit that has received the end signal returns to the reception standby state.

[0005]

[0006]

Since the present invention is constructed as described above, the slave automatically switches to the end state after the transmission of the predetermined message from the master.

[0007]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a block diagram of a cordless telephone device of the present invention, wherein (1) is a base unit connected to a telephone line (L), and (2)
A), (2B) and (2C) are slave units wirelessly connected to the master unit (1).

FIG. 2 is a block diagram showing a first embodiment of the master unit (1). (3) is a receiving circuit, and a received signal is supplied to a hybrid circuit (5) via an amplifier (4). . The hybrid circuit (5) is connected to the telephone line (L). (6) is a transmission circuit to which signals from the control circuit (10) and the hybrid circuit (5) are supplied, and is configured to transmit signals to the slave units (2A), (2B), and (2C). . (7) is an incoming call detecting circuit for detecting an incoming call, (8) is a voice synthesizing circuit that outputs a predetermined voice, for example, a voice of "meal time", (9) is a calling key, and (10) is a micro key. A control circuit composed of a processor controls a switch contact (not shown) in the hybrid circuit (5) to interrupt the telephone line (L), and exchanges data with the receiving circuit (3) and the transmitting circuit (6). In addition, it controls the channels of these circuits. When the telephone circuit (L) is connected, the control circuit (9) operates to output a dial pulse to the telephone line (L) based on a dial signal from the slave units (2A), (2B), and (2C). I do.

FIG. 3 is a block diagram of a first embodiment of the slave unit (2A). (11) is a receiving circuit for receiving a signal from the master unit (1). The received signal is muted. The signal is supplied to the switching circuit (13) via the circuit (12).
The switching circuit (13) supplies a signal from the muting circuit (12) to one of a normal communication amplifier (14) and a loudspeaker amplifier (15). A call speaker (16) and a speaker (17) are connected to the latter amplifier (15). A transmission circuit (18) transmits a signal from the slave unit (2A) to the master unit (1). An output signal of the microphone (20) is transmitted via a muting circuit (19) to the control circuit (21). ) Is supplied. The control circuit (21) is composed of a microprocessor, and controls the master unit (1) based on an output signal from the keyboard (22) including a numeric keypad, a call key, an end key and the like and a control signal from the master unit (1). A signal and a dial signal are controlled to be transmitted, and each unit is controlled. The control circuit (21) also controls the channels of the transmission / reception circuits (11) and (18) as in the case of the master unit (1). The other slave units (2B) and (2C) have the same configuration as the slave unit (2A) described above.

Next, the operation of the above configuration will be described.
In the initial state, the muting circuit (12) (1)
9) is an ON state. First, a case where an incoming call from the telephone line (L) is detected will be described. Upon detecting an incoming call, the control circuit (10) of the master unit (1) captures an empty channel, sets the receiving circuit (3) and the transmitting circuit (6) as control channels, and receives an incoming call detection signal and communication channel data. , A control signal including return time data (for assigning a response signal transmission start time to each child device in order to prevent a response signal from each child device from colliding). By the way, the control circuit (21) of the slave units (2A), (2B), and (2C) monitors the control channel during the standby state, and when the control signal is received, at a predetermined time after the reception. A response signal is transmitted to the master unit (1).
The control circuit (10) of the master unit (1) sets the reception circuit (3) and the transmission circuit (6) to the communication channel if there is a response signal from any of the slave units after a lapse of a predetermined time. The control circuit (21) of the slave unit that has received the control signal from the unit (1) sets the transmission / reception circuits (11) and (18) to the communication channel and turns off the muting circuit (12).
And the switching circuit (13) is connected to the normal call amplifier (1).
4) Switch to the side. After securing the communication channel, the control circuit (10) of the base unit (1) transmits a ringer sound signal on the communication channel to generate a ringer sound in the slave unit. When, for example, the call key of the slave unit (2A) is operated in response to the ringer sound, an off-hook signal is transmitted from the slave unit (2A) to the master unit (1), and the master unit (1) receives the off-hook signal. The control circuit (10) of (1) connects the telephone line (L) and transmits a line connection signal through a communication channel. Among the slave units that have received the line connection signal, the slave unit (2A) that has transmitted the off-hook signal sets the muting circuit (19) to OFF to set the communication mode, and the slave unit (2B) that does not transmit the off-hook signal. (2C) turns on the muting circuit (12) and enters a reception standby state.
When the call is terminated and the end signal is transmitted from the slave unit (2A) in the call mode, the base unit (1) releases the connection of the telephone line (L) and transmits the end response signal. I do. still,
The slave unit (2A) which was in the call mode turns on the muting circuits (12) and (19) upon receiving the end-of-call response signal, and returns to the reception standby state.

Next, a case where the call key (9) of the master unit (1) is operated will be described. After capturing the empty channel, the control circuit (10) of the master unit (1) sets the reception circuit (3) and the transmission circuit (6) as control channels, and sets a call control signal, handset designation data, and call channel data. Is transmitted. Here, the slave unit designation data is assumed to first indicate the slave unit (2A). On the other hand, among the respective slaves, only the designated slave (2A) transmits a response signal to the master (1), and the control circuit (10) of the master (1) that has received the response signal receives the response signal. The circuit (3) and the transmission circuit (6) are set to the communication channel, and the control circuit (21) of the slave unit (2A) sets the transmission and reception circuits (11) and (18) to the communication channel, and the muting circuit ( 12) is turned off and the switching circuit (13) is switched to the loudspeaker amplifier (15). After securing the communication channel, the control circuit (10) of the parent device (1) drives the voice synthesis circuit (8) to make a predetermined message louder through the loudspeaker (17) of the child device (2A). When the transmission of the predetermined message is completed, the control circuit (10) of the base unit (1) transmits an end signal to the sub unit (2A), and controls the sub unit (2A) that has received the end signal. The circuit (10) turns on the muting circuit (12) and switches the circuit (13).
Is switched to the normal call amplifier (15) side to return to the reception standby state. Thereafter, the control circuit (10) of the master unit (1) performs the same processing as described above for all other slave units. In the above operation, it is conceivable that all the slaves are communicated simultaneously, instead of individually communicating with the slaves. In this case, the output signal of the voice synthesis circuit (8) is sent to all the slaves. Even if a carrier wave from any of the slave units is not transmitted for some reason during transmission (when the slave unit does not operate), the state cannot be determined by the master unit (1). This configuration is not adopted. According to the above embodiment, since communication is performed individually, it is possible to detect that the carrier wave from the slave unit is no longer transmitted (can be determined by the so-called signal level determination of the receiving circuit (3)). The parent device (1) accesses a predetermined child device from the beginning in the same procedure, thereby reliably transmitting a predetermined message to the child devices (2A) and (2B).
Loudspeaking can be performed via the loudspeaker (17) of (2C).

FIGS. 4 and 5 are block diagrams of a base unit (1) and a sub unit (2A) of a cordless telephone device according to a second embodiment. In this embodiment, a switching circuit (23) is provided at the output of the receiving circuit (3) of the master unit (1), and a loudspeaker (25) having a loudspeaker (24) connected to the switching circuit (23). ) And the amplifier (4) described above. Further, a voice synthesizing circuit (26) having the same configuration as the voice synthesizing circuit (8) provided in the master unit (1) of FIG. 2 is connected to the transmission circuit (18) of the slave unit (2A) and a control circuit (21). Is connected to a call key (27).

In this embodiment, when the call key (27) of one of the slave units is operated, the control circuit (21) of the slave unit is operated.
After capturing an empty channel, the receiving circuit (11)
The transmission circuit (18) is set to a control channel, and a paging control signal and a control signal including communication channel data are transmitted to the parent device (1). The master unit (1) that has received the control signal transmits a response signal to the slave unit, and the control circuit (21) of the slave unit that has received the response signal transmits the response signal to the reception circuit (11) and the transmission circuit (1).
8) is set to the communication channel, and the control circuit (10) of the master unit (1) sets the transmission / reception circuits (3) and (6) to the communication channel and sets the switching circuit (23) to the loudspeaker amplifier (2).
5) Switch to the side. Thereafter, the voice synthesis circuit (26) is driven, and a predetermined message is loudspeaked from the loudspeaker (24) of the master unit (1).

FIGS. 6 and 7 are block diagrams of a base unit (1) and a sub unit (2A) of a cordless telephone device according to a third embodiment. In this embodiment, a voice synthesizing circuit (28) driven by a control circuit (21) of a slave unit (2A) is provided, and the output of the voice synthesizing circuit (28) is loudspeaked through a loudspeaker amplifier (29). The loudspeaker (30) is used to increase the volume.

The incoming operation is described in the first section above.
This is the same as the embodiment, and the description is omitted. Less than,
The case where the call key (9) of the master unit (1) is operated will be described. After capturing the empty channel, the control circuit (10) of the master unit (1) sets the reception circuit (3) and the transmission circuit (6) to the control channel, and transmits a control signal including a call control signal and a return time data. Send. Here, the slave unit (2A)
(2B) The control circuit (21) of (2C) monitors the control channel when in the standby state as in the first embodiment, and when the control signal is received, when the control signal is received, a predetermined time after receiving the control signal. To the master unit (1). The control circuit (10) of the master unit (1) returns to the reception standby state if response signals are received from all the slave units after a lapse of a predetermined time. The control signal is transmitted again to return to the reception standby state.

Thus, the slave unit that has transmitted the response signal drives the voice synthesizing circuit (28) and loudspeaks a predetermined message via the loudspeaker (30). After outputting the message, the slave unit returns to the reception standby state. In the third embodiment, a predetermined message is output from the slave units (2A), (2B), and (2C) by operating the master unit (1), but the control circuit (10) of the master unit (1) is output. ) Is connected to a voice synthesizing circuit, and an amplifier and a speaker for increasing the output of the circuit are provided.
(2B) A call key is provided in (2C), and by operating the call key, a control signal including a call control signal is transmitted from the slave unit to the base unit (1), and a predetermined message is amplified from the base unit (1). It may be.

[0017]

As described above, the present invention is configured as described above, so that after the transmission of a predetermined message from the master unit, the slave unit automatically enters the end state, and the slave unit ends the call. No action is required.

[Brief description of the drawings]

FIG. 1 is a block diagram of a cordless telephone device according to the present invention.

FIG. 2 is a block diagram of a master unit according to the first embodiment.

FIG. 3 is a block diagram of a slave unit according to the first embodiment.

FIG. 4 is a block diagram of a master unit of the second embodiment.

FIG. 5 is a block diagram of a slave according to the second embodiment.

FIG. 6 is a block diagram of a master unit of the third embodiment.

FIG. 7 is a block diagram of a child device of the third embodiment.

[Explanation of symbols]

 Reference Signs List 1 master unit 2A slave unit 2B slave unit 2C slave unit 8 voice synthesis circuit 9 call key 10 control circuit 21 control circuit 26 voice synthesis circuit 27 call key 28 voice synthesis circuit

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaaki Taniguchi 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) References JP-A-4-23545 (JP, A) JP-A-Hei 1-176152 (JP, A) JP-A-5-300201 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H04Q 7/00-7/38

Claims (1)

(57) [Claims] 1. A connected to a telephone line, code and base unit, ing from the slave unit to be connected wirelessly to a parent apparatus having a transceiver
A predetermined control signal from the base unit.
Form a line between the parent and child,
A signal corresponding to a predetermined message from the parent device
Transmission to the slave unit and transmission of a signal corresponding to the message
When the communication ends, the master unit sends an end signal to the slave unit.
The slave unit that has transmitted and received the end signal returns to the reception standby state.
Cordless telephone, characterized in that ascribed.