JP2836203B2 - Wireless telephone system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless telephone device, and more particularly, to a parent device connected to a wired telephone line and connected to the parent device via a wireless line corresponding to the parent device. The present invention relates to a wireless telephone system represented by a cordless telephone device including a wireless telephone.

[Prior Art] Conventionally, a cordless telephone device used as this type of wireless telephone device has taken the following operation procedure.

FIG. 3 is a sequence chart showing an operation procedure of the conventional cordless telephone device when receiving a call.

In the drawing, upon detecting an incoming call from a wired telephone line, the parent device sends an incoming call signal to the wireless telephone on a control channel (501). The wireless telephone is in a standby state on the control channel, and sends an incoming call response signal when receiving an incoming call signal from the parent device (502). Next, the parent device sends a channel designation signal for designating a speech channel to be shifted (503), and switches the channel from the control channel to the speech channel. The wireless telephone switches the channel from the control channel to the communication channel, and when this is completed, sends a channel switching completion signal to the parent device (504). When the master device receives the channel switching completion signal, it sends a bell signal to the wireless telephone (505). Upon receiving the call signal, the wireless telephone performs an incoming call display operation such as ringing a bell.

In the above, the case where the number of wireless telephones is one has been described. However, even when there are a plurality of wireless telephones, the incoming call display operation is performed by the same operation.

[Problem to be Solved by the Invention] In the above-mentioned conventional wireless telephone device, a problem arises when switching to the communication channel cannot be performed for some reason.

For example, among a plurality of radio telephones connected to the same parent device, a radio telephone (referred to as a radio telephone A) is turned off or is far away from the parent device, so that a radio communication with the parent device is performed. If there is an incoming call from the telephone rotation when the connection is not possible, the wireless telephone other than the wireless telephone A and the parent device perform the wireless connection according to the above-described procedure, and talk on the transmission channel and the reception channel of each wireless unit. An incoming call display operation is performed while staying on the channel.

In this case, even if the user of the radio telephone A tries to turn on the radio telephone A by looking at or listening to an incoming call of a radio telephone other than the radio telephone A, or to answer by approaching the parent device, In A, there is a problem that it is not possible to know which communication channel is performing the incoming call display operation, so that it is not possible to respond.

For this reason, in the conventional cordless telephone device, a method of transmitting a busy tone to inform the user that connection is not possible has been adopted.

In addition, the wireless telephone during the incoming call display operation operates the transmission unit even though it is not actually talking, so that wasteful power is consumed. Generally, since the power consumption of the transmitting unit is large, there is a problem that the use time of the wireless telephone is shortened due to the useless power.

The present invention has been made in view of the above-described problems, and enables the parent device and the wireless telephone to respond regardless of which call channel is used to transmit the call signal. It is an object of the present invention to provide a wireless telephone system capable of reducing power consumption and extending use time by suspending a transmission unit during an incoming call display operation.

Means for Solving the Problems To achieve the above object, the present invention provides a master device connected to at least one or more telephone lines, and at least one wireless device connected to the master device via a wireless line. In a wireless telephone system including a telephone, the parent device includes a wireless unit that can separately set a transmission channel and a reception channel, and a control unit that controls the wireless unit. When the incoming call display operation is started, the transmission channel of the radio section remains at the channel performing the incoming call display operation, and the reception channel of the radio section returns to the control channel and waits for a response from the radio telephone, and also responds from the radio telephone. Is detected, an operation of switching the transmission channel and the reception channel of the radio unit of the parent device to the communication channel is performed, and the operation is shifted to the telephone communication. Is provided with a radio unit capable of separately setting a transmission channel and a reception channel, and a control unit for controlling the radio unit. When an incoming call display operation is started, the reception channel remains at the channel performing the incoming call display operation, When the answering operation of the telephone is performed, the receiving channel is once switched to the control channel, and after detecting the vacancy of the control channel, the transmitting operation is resumed, the response is made to the parent device on the control channel, and the transmission is performed according to the designation from the parent device. The configuration is such that the channel and the reception channel are switched to the communication channel, and the communication is shifted to the communication. Preferably, when the radiotelephone starts the incoming call display operation, the transmission operation of the radio unit is suspended.

[Operation] According to the above-described wireless telephone system, when the user knows the incoming call and performs an off-hook operation of the wireless telephone,
The receiving unit is temporarily switched to the control channel, and an off-hook signal is transmitted to the parent device. When receiving the off-hook signal on the control channel, the parent device switches the channel, sends an AF ON signal, and enters a talking state. When the wireless telephone receives the AF ON signal, it enters a talking state, so that it is possible to talk with the other party on the telephone line.

Also, when the wireless telephone is performing the incoming call display operation, it operates only the receiving unit and stops the transmitting unit.

Example Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the wireless telephone system of the present invention.

In the drawing, reference numeral 1 denotes a parent device as a connection device in a wireless telephone device, which is connected via a wired telephone line 100. Reference numeral 2 denotes a wireless telephone which is detachably used with the parent device 1 and is connected by a wireless line. First, the internal configuration of the parent device 1 will be described.

Reference numeral 11 denotes a telephone circuit which is connected to the telephone line 100, performs transmission of an incoming call detection dial, and performs two-wire to four-wire conversion. Reference numeral 12 denotes a wireless unit, which includes a transmitting unit 12a and a receiving unit 12b,
During a call, the transmitting unit 12a is connected to the telephone circuit 11 via the audio signal line 101, and the receiving unit 12b is connected to the telephone circuit 11 via the audio signal line 102. Reference numeral 13 denotes a control unit, and a telephone circuit control line 103
And exchanges information dial data with the telephone circuit 11 via the
The control of ON / OFF of the channel data or the operation in the radio unit 12 is performed via the.

A transmission / reception antenna 14 transmits / receives data to / from the wireless telephone 2.

On the other hand, in the wireless telephone 2, reference numeral 2a denotes a wireless unit, and a receiving unit 21 including a receiving unit 21 and a transmitting unit 22 is connected to a speaker 21a. , An electric signal is converted into an acoustic signal, and a sound is emitted from the speaker 21a.

The transmitting unit 22 is connected to the microphone 22a, converts audio input from the microphone 22a into an electric signal, and transmits the electric signal from the transmitting / receiving antenna 23 to the parent device 1.

Reference numeral 24 denotes a control unit, which is a receiving unit 21 via control lines 201 and 202.
And the transmitting section 22 and the sounder 25 performs an audible display at the time of an incoming call.

FIG. 2 is a sequence chart showing an operation at the time of an incoming call of the wireless telephone system of the present embodiment.

In the drawing, when detecting an incoming call from the wired telephone line 100, the parent device 1 sends an incoming call signal (101). In response, the wireless telephone 2 sends an incoming response signal (10
2). Next, the parent device 1 sends a channel designation signal,
The parent device 1 itself switches the channel from the control channel to the communication channel (103). On the other hand, upon receiving the channel designation signal, the wireless telephone 2 switches the channel from the control channel to the communication channel in the same manner as the parent device 1, and sends a channel switching completion signal when the switching is completed (10).
Four).

Next, after transmitting the channel switching completion signal, the wireless telephone 2 pauses the transmission unit 22 and receives the call signal transmitted from the parent device 1 while the one reception unit 21 is operated as it is, and performs a call display operation. (For example, ringing of a bell or blinking of a lamp). As a result, power consumption can be reduced.

On the other hand, when the master device 1 receives the channel switching completion signal from the wireless telephone 2, the transmitting unit 12 a sends out a call signal without changing the communication channel, and the receiving unit 12 b returns to the control channel and receives a response from the wireless telephone 2. Wait (10
Five).

When the user knows the incoming call and performs an off-hook operation of the wireless telephone 2, the wireless telephone 2 switches the receiving unit 12b to the control channel once, confirms that the wireless unit is free, and then operates the transmitting unit 12a on the control channel. , Parent device 1
Then, an off-hook signal is transmitted to (106). At this time, the parent device 1 can receive the off-hook signal because it is receiving on the control channel.

In this case, other wireless telephones connected to the same parent device need only transmit an off-hook signal on the control channel.
It is also possible to respond with the wireless telephone set.

When receiving the off-hook signal, parent device 1 transmits a channel designation signal again to switch channels (10).
7). The wireless telephone 2 receives this and switches the channel, and when the switching of the channel is completed, sends a channel switching completion signal to the parent device 1 (108). Next, the parent device 1 transmits an AF (Audio Frequency) ON signal to enter a talking state (109). AF ON even with wireless phone 2
When the signal is received, the communication state is established, so that it is possible to communicate with the other party on the telephone line (110).

[Effects of the Invention] As described above, according to the present invention, when the incoming call display operation is performed, the receiving unit of the parent device waits on the control channel, so that the call is displayed on the wireless telephone that does not display the incoming call, that is, on the call channel. There is an effect that a response can be made by a wireless telephone even though a signal is being transmitted.

This is especially useful when a single parent device contains multiple radio telephones and some radio telephones are operating, but others may be down (eg power off). Becomes

Also, when the wireless telephone is performing the incoming call display operation,
If the transmitting unit is stopped, power consumption can be reduced, and the use time can be lengthened accordingly.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the wireless telephone system of the present invention, FIG. 2 is a sequence chart showing an operation of the wireless telephone system of the present embodiment at the time of an incoming call, and FIG. It is a sequence chart which shows operation | movement at the time of an incoming call. 1: Parent device, 2: 2 wireless telephone 11: Telephone circuit, 12, 20: Wireless unit 12a, 22: Transmitter, 12b, 21: Receiver 13, 24: Control unit 14, 23: Transmitter / receiver antenna

Claims (2)

(57) [Claims] 1. A wireless telephone system comprising a master device connected to at least one or more telephone lines and at least one wireless telephone connected to the master device via a wireless line, wherein the master device transmits A radio unit that can set a channel and a reception channel separately, and a control unit that controls the radio unit are provided. When an incoming call is detected, a radio line is set, and the incoming call display operation is started, the transmission channel of the radio unit sets the incoming call It stays on the channel that is performing the display operation, and the receiving channel of the wireless unit returns to the control channel and waits for a response from the wireless telephone. When a response from the wireless telephone is detected, the transmission channel and the receiving channel of the parent device wireless unit are talked. Perform the operation to switch to the channel and switch to the call, and the wireless telephone can set the transmission channel and the reception channel separately. That a wireless unit, and a control unit for controlling the radio unit, Caller receiving channel and starts operating stays in the channel doing the incoming display operation,
When the response operation of the wireless telephone is performed, the receiving channel is once switched to the control channel, and after detecting the vacancy of the control channel, the transmission operation is resumed, the response is made to the parent device on the control channel, and according to the designation from the parent device. A wireless telephone system characterized in that a transmission channel and a reception channel are switched to a call channel, and the call is shifted to a call. 2. The wireless telephone system according to claim 1, wherein the transmission operation of the wireless unit is suspended when the incoming call display operation is started.