JPH0458626A - Radio telephone system - Google Patents

Abstract

PURPOSE:To reduce power consumption and to extend the operating time attended therewith by giving a pause to a transmission section when a radio telephone set is in its incoming display operation. CONSTITUTION:Upon the receipt of a channel designation signal, a radio telephone set 2 switches its channel from a control channel to a speech channel similar to that of a master set 1 and sends a channel changeover end signal after the end of the changeover. Then the radio telephone set 2 pauses a transmission section 22 after the transmission of the channel changeover end signal, receives a call signal sent from the master set 1 while a reception section 21 is operated as it is to apply the incoming display operation. Thus, the power consumption is reduced. On the other hand, when the master set 1 receives the channel changeover end signal from the radio telephone set 2, a transmission section 12a sends a call signal while keeping the speech channel and a reception section 12b is restored to the control channel to await a reply from the radio telephone set 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an S-line telephone device, and in particular, a parent device connected to a wired telephone line and a device connected to the parent device via a wireless line. This field relates to wireless telephone systems typified by cordless telephone devices, etc., which consist of wireless telephones.

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

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

In the drawing, when the parent device detects an incoming call from the wired telephone line, it sends an incoming call signal to the wireless telephone on the control channel (501), and the wireless telephone is in a standby state on the control channel. When receiving the incoming call signal from the parent device, it sends an incoming call response signal (502). Next, the parent device sends a channel designation signal to specify the call channel to be transferred to (503), and controls the channel. Switch from channel to call channel. The radio telephone performs channel switching from the control channel to the speech channel, and when this is completed, sends a channel switching completion signal to the parent device (504).When the parent device receives the channel switching completion signal, it sends a bell signal to the radio telephone. (505) When the wireless telephone receives the call signal, it performs an incoming call display operation such as ringing a bell.

The above explanation was based on the case of one wireless telephone.
Even when there are a plurality of wireless telephones, the incoming call display operation is performed using the same operation.

[Problems to be Solved by the Invention] In the above-described conventional radio telephone device, five problems arise when, for some reason, it is not possible to shift to a communication channel.

For example, among multiple wireless telephones connected to the same parent device, one wireless telephone (referred to as wireless telephone A) may have its power turned off, or may be far away from the parent device, so If an incoming call is received from the telephone line when a wireless connection is not possible, the wireless telephone will connect to another wireless telephone (the device will not establish a wireless connection according to the procedure described above), and the respective radio sections will The incoming call display operation is performed by keeping the transmission channel and the reception channel J as communication channels.

In this case, even if the user of radiotelephone A sees or hears an incoming call from a radiotelephone other than radiotelephone A and attempts to answer by turning on radiotelephone A or approaching the base device, the user of radiotelephone In case A, there is a problem in that it is not possible to respond because it is not possible to know which call channel is being used to display the incoming call.

For this reason, conventional cordless telephone devices have adopted methods such as sending out a busy tone to notify the user that a connection cannot be made.

Also, the wireless telephone is in the incoming call display mode.

The transmitter operates even though there is no actual communication, which wastes power.

Generally, the power consumption of this transmitting section is large, so there is a problem that the usage time of the wireless telephone is shortened due to this wasted power.

The present invention has been made in view of the above-mentioned problems.
Regardless of which communication channel the call signal is being transmitted, the parent device and wireless telephone can respond, and furthermore, by suspending the transmitting section when the wireless telephone is displaying an incoming call, power consumption can be reduced. The purpose of the present invention is to provide a wireless telephone system that can reduce noise and extend usage time.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a parent device connected to at least one telephone line, and at least one wireless device connected to the parent device via a wireless line. In a wireless telephone system consisting of a telephone, the parent device is equipped with a radio section that can set transmission channels and reception channels separately, and a control section that controls this radio section, and detects incoming calls and sets a radio line. When the incoming call display operation is started, the transmitting channel of the radio section remains the channel where the incoming call display operation is being performed, and the receiving channel of the radio section returns to the control channel and waits for a response from the radio telephone. When it detects this, it switches the transmitting channel and receiving channel of the main device's radio section to the call channel and transitions to a call. When the incoming call display operation is started, the receiving channel remains on the channel in which the incoming call display operation is being performed, and when the wireless telephone responds, the receiving channel is switched to the control channel, After detecting an empty control channel, the system restarts the transmission operation, sends a response to the parent device on the control channel, switches the sending channel and receiving channel to a call channel according to the instructions from the parent device, and transitions to a call. .

Preferably, the wireless telephone is configured such that the transmitting operation of the wireless section is suspended when the incoming call display operation is started.

[Function] According to the above-mentioned one-line telephone system, when the user learns of an incoming call and performs an off-book operation on the radio telephone, the radio telephone temporarily switches the receiving section to the control channel and sends an off-footer signal to the parent device. do.

When the parent device receives an off-hook signal on the control channel, it switches the channel and sends an AF ON signal.
・The phone enters a call state. When the wireless telephone also receives the AF ON signal, it enters a talking state, and thus can talk to the other party on the telephone line.

Further, when the wireless telephone is performing an incoming call display operation, only the receiving section is operated and the transmitting section is paused.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the 1Δ plane. FIG. 1 is a block diagram showing an embodiment of the wireless telephone system of the present invention.

In the drawing, l is a parent device that is a connecting device in the wireless telephone device, and is connected via a wired telephone line 100. Reference numeral 2 denotes a wireless telephone that is detachably attached to the main device and is connected via a wireless line.

Of these, first, the internal configuration of the father 2i will be explained.

11 is a telephone circuit connected to the telephone line 100;
Detecting incoming calls, sending out dials, performing two-line and four-line conversion, 1
2 is a wireless section, transmitting @ 11 $ 12 a, and receiving section 1
2b, when making a call.

The transmitter 1!11.2a is connected to the telephone circuit 11 via the audio signal line 101, and the receiver 12b is connected to the telephone circuit ll via the audio signal line 102. 13 is the control unit, and the telephone awj
It exchanges incoming information dialing data with the telephone circuit 11 via the lIsss line 103, and controls channel data or operations such as 0N10FF in the radio section 12 via the radio section control lines 104 and 105. .

Further, 14 is a transmitting/receiving antenna for transmitting and receiving data to and from the wireless telephone 2.

On the other hand, in the wireless telephone 2, 2a is a radio section, and the receiving section 21 is composed of a receiving section 21 and a transmitting section 22.
is connected to the speaker 21a, detects that a call signal from the father all has arrived at the transmitting/receiving antenna 23, and 1! The air signal is converted into an acoustic signal and a sound is emitted from the speaker 21a.

The transmitter 22 is also connected to the microphone 22a, converts the audio input from the microphone 22a into an electrical signal, and transmits it from the transmitting/receiving antenna 23 to the parent device l.

Reference numeral 24 denotes a control section which controls the receiving section 21 and the transmitting section 22 via control lines 201 and 202, and also performs an audible display at the time of an incoming call through the dialer 25.

FIG. 2 is a sequence chart showing the operation of the wireless telephone system of this embodiment when a call is received.

In the drawing, when the parent device l detects an incoming call from the wired telephone line 100, it sends out an incoming call signal (101), and in response, the wireless telephone a2 sends out an incoming call response signal (101).
02), Next, the parent device 1 sends a channel designation signal, and the parent device 1 itself can switch from the control channel to the communication channel (103).Meanwhile, the S-line telephone 2
When it receives the channel designation signal, it switches the channel from the control channel to the communication channel in the same way as the parent device L, and when the switching is completed, it sends a channel switching completion signal (
104).

Next, after transmitting a channel switching completion signal, the radio telephone 2 pauses the transmitting section 22, keeps one receiving section 21 operating, receives the call signal sent from the parent device 1, and performs an incoming call display operation. (for example, by ringing a bell or blinking a lamp). This makes it possible to reduce power consumption.

On the other hand, when the parent device 1 receives a channel switching completion signal from the wireless telephone 2, the transmitting section 12a sends out a call signal using the communication channel, and the receiving section 12b returns to the control channel and receives a response from the wireless telephone 412. have (1
05).

When the user notices an incoming call and performs an off-hook operation on the wireless telephone 82, the wireless telephone 2 once switches the receiving section 12b to the control channel, and after confirming that the channel is free, transmits the transmitting section 12a1F! - operate on the control channel, 1
Send an off-hook signal to all devices (106
), at this time, the parent device l is receiving the control channel, so it is possible to receive the off-hook signal.

In this case, the other wireless telephones connected to the same parent device only have to send an off-hook signal on the control channel, so the power can only be turned on after the other wireless telephones have received an incoming call.
It is also possible to respond using a wireless telephone.

When the parent #Itl receives the off-hook signal, it sends the channel designation signal again and switches the channel (10
7) The radio telephone 2 receives this and switches the channel, and when the channel switching is completed, it sends a channel switching completion signal to the kesa all (10B).Next,
The parent device 1 uses AF (＾audio Frequency:
Sends the voice group 1 ON signal and enters the talking state (109)
, When the wireless telephone 2 also receives the AF ON signal, it enters the talking state, so you can talk to the other party on the telephone line (
110).

[Effects of the Invention] As explained above, when the present invention is displaying an incoming call, the receiving section of the parent device waits on the control channel to receive a call on a wireless telephone that is not displaying an incoming call, that is, on a communication channel. This has the effect that the wireless telephone can respond regardless of whether a signal is being transmitted.

This is especially useful when multiple wireless telephones are housed in one parent device, and some wireless telephones may be operational while others may be stopped (e.g., powered off). becomes.

Furthermore, if the transmitting section is paused while the radio telephone is displaying an incoming call, it is possible to reduce power consumption and, accordingly, have the effect of lengthening the usage time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the wireless telephone system of the present invention, FIG. 2 is a sequence chart showing the operation of the wireless telephone system of the present embodiment when a call is received, and FIG. 3 is a block diagram of a conventional wireless telephone system. It is a sequence chart which shows the operation|movement at the time of an incoming call. l: Kesha! l 2: Telephone circuit in radio telephone l 12, 20: Radio section 12a, 22: Transmitting section 1
2b, 21: Receiving section 13.24: Control section 14.23: Transmitting and receiving antenna

Claims (2)

[Claims] (1) In a wireless telephone system consisting of a parent device connected to at least one telephone line and at least one wireless telephone connected to the parent device via a wireless line, the parent device is connected to a transmission channel. Equipped with a radio unit that can set reception channels separately and a control unit that controls this radio unit, when an incoming call is detected, a wireless line is set, and incoming call display operation starts, the transmitting channel of the radio unit is set to incoming call display operation. The receiving channel of the radio unit returns to the control channel and waits for a response from the radio telephone, and when a response from the radio telephone is detected, the transmitting channel and receiving channel of the main device radio unit are switched to the communication channel. The wireless telephone is equipped with a radio section that can set the transmitting channel and the receiving channel separately, and a control section that controls this radio section, and when the incoming call display operation starts, the receiving channel is set. Stay on the channel that is performing the incoming call display operation,
When you perform a response operation on the wireless telephone, the reception channel is switched to the control channel, and after detecting that the control channel is free, it resumes the transmission operation, responds to the parent device on the control channel, and responds according to the instructions from the parent device. A wireless telephone system characterized by switching the transmitting channel and receiving channel to a calling channel, and then transitioning to calling. (2) A radiotelephone system according to claim 1, wherein the radiotelephone according to claim 1 suspends the transmission operation of the radio section when it starts an incoming call display operation.