JPH0815349B2 - Control method for wireless telephone device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for controlling a wireless telephone device including a parent device connected to a wired telephone line and a wireless telephone connected to the parent device via a wireless line. In particular, the present invention relates to a method that enables a parent device to control connection with a plurality of wireless telephones.

TECHNICAL BACKGROUND OF THE INVENTION A wireless telephone system including a parent device connected to a wired telephone line and a wireless telephone connected to the parent device via a wireless line includes, for example, a cordless telephone device. The cordless telephone device is composed of a parent device (connection device) connected to a wired telephone line and a wireless telephone provided in a one-to-one correspondence with the parent device. The line is a signal of frequency f ₁ ,
The frequency of the downlink wireless line from the parent device to the wireless telephone is f ₂
The signal is fixedly set. Therefore, when using two wireless telephones, it was necessary to provide two parent devices.

[Problems of Background Art] However, in the case of a wireless telephone device having such two wireless telephones and a parent device, generally, two wireless telephones are not used at the same time, and two parent devices are not used at the same time. Possession is not economically advantageous.

In addition, in order to make effective use of frequency resources, the wireless link between the parent device and the wireless telephone has recently determined a frequency to be used by using a common control channel among a plurality of parent devices, and then a call corresponding to the frequency. A configuration is adopted in which a so-called multi-channel access method is adopted to establish a channel. However, when this multi-channel access method is adopted, in the configuration in which a parent device is provided for each of the above two wireless telephones, when an incoming call is received from a wired telephone line, the two parent devices are connected using a control channel. The control is started at the same time, and in this case, the radio waves of the control channels interfere with each other, and the connection control may be disabled.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a method for controlling a wireless telephone device that enables connection control with a plurality of wireless telephones using a parent device. .

[Outline of the Invention] According to the present invention, a parent device connected to a wired line,
In a radiotelephone system including a plurality of radiotelephones connected to the parent device via a radio line, the plurality of radiotelephones perform intermittent reception operation in which a reception state and a non-reception state are asynchronously repeated in a standby state. The parent device simultaneously transmits an incoming call signal to all of the plurality of wireless telephones that are performing the intermittent reception operation when receiving an incoming call from the wired line, and the master device transmits the incoming call signal from any one of the plurality of wireless telephones. After the incoming call response signal is returned, after guiding the plurality of wireless telephones to the same communication channel,
A bell ringing signal is transmitted using the call channel, the wireless telephone generates a ringing tone when the bell ringing signal is received, and the wireless telephone goes off-hook in response to the ringing tone to the parent device. On the other hand, when an off-hook signal is sent back, the wired line and the wireless telephone are connected via the master device to shift to a call state.

[Embodiment of the Invention] FIG. 1 is a block diagram showing an embodiment of a wireless telephone device according to the present invention. The radiotelephone device of this embodiment comprises one parent device 4 and two radiotelephones 5, 5 '. In this embodiment, two wireless telephones are used to facilitate the following description, but the same configuration can be applied to the case of three or more wireless telephones. The parent device 4 is connected via a terminal 3 to a wire telephone line (not shown). The signal from the wired telephone line input from terminal 3 is the line relay contact 2
3, added to the transmitter 16 via the hybrid circuit 22,
The output of the transmitter 16 is output to the antenna 12 via the antenna duplexer 13.
Sent from. Further, the signal received from the antenna 12 is added to the receiver 14 via the antenna duplexer 13, and the receiver 14
Is output to the wired telephone line via the hybrid circuit 22, the line relay contact 23, and the terminal 3. Synthesizer
21 determines the radio frequencies of the transmitter 16 and the receiver 14, and the control unit 15 controls the transmitter 16, the receiver 14 and the synthesizer 21. Read-only memory (RO
M) 18,18 'stores identification information used for connection control with the wireless telephones 5,5' described later, and is used by the control unit 15.

The wireless telephones 5 and 5'are connected to the parent device 4 through a non-turning line, and read-only memory (ROM) 17,1 respectively.
It has the same structure except that the stored information of 7'is different. That is, the portion 6 surrounded by a broken line in FIG. 1 has the same configuration, and in the following description of the wireless telephone 5 ', the reference numeral used for the wireless telephone 5 is added with a dash for convenience. The signal transmitted from the parent device 4 is the antenna 11
And is input to the receiver 19 via the antenna duplexer 10, and the output of the receiver is applied to the handset 29 and sounded. The signal input from the microphone 30 is sent to the parent device 4 via the transmitter 8, the antenna duplexer 10 and the antenna 11. The synthesizer 20 has a receiver 19 and a transmitter 8.
For determining the radio frequency of the
19, controls the transmitter 8 and the synthesizer 20. A speaker 31 connected to the synthesizer 20 is a speaker for producing a ringing tone, and the hook switch 7 is used for making a call or responding to a ringing tone produced by the speaker 31.

The information stored in the read-only memories 17 and 17 'responds to the information stored in the read-only memories 18 and 18' of the parent device 4.

The intercom switch 32 is for performing an intercom operation described later.

Now, in this embodiment, one control channel (C-CH)
And a multi-channel access method using a plurality of, for example, 45 speech channels (S-CH) is adopted. That is, one control channel is shared by a plurality of devices to set a speech channel.

The operation of this embodiment will be described below with reference to the flowcharts shown in FIGS.

FIG. 2 shows an operation flow when a call is made from the wireless telephone 5. When the hook switch 7 of the wireless telephone 5 is set to the off-hook state (step 201), this state change is detected by the control unit 9, and the control unit 9 transmits the transmitter 8
Is turned on (transmission state) (step 202), and then the calling signal is transmitted via the antenna duplexer 10 and the antenna 11 to the parent device 4
(Step 203). The transmission of the calling signal from the wireless telephone 5 to the parent device 4 is performed by the control channel (C-CH).
Is performed using. It should be noted that the control unit 9 turns off the transmitter 8 (non-transmission state) when the transmission of the calling signal is completed (step 204).

The parent device 4 receives the calling signal from the wireless telephone 5 through the antenna 1
2. The signal is received by the receiver 14 via the antenna duplexer 13 (step 205), and the demodulated output is added to the controller 15. This causes the controller 15 to turn on the transmitter 16 (step 20
6) A call signal is sent to the wireless telephone 5 '(step 207). The calling signal is sent from the parent device 4 to the wireless telephone 5'using the control channel (C-CH). However, in order to selectively send the calling signal to the wireless telephone 5 '. This calling signal includes the identification information stored in the read-only memory 18 '. That is, when the radio telephone 5'receives this calling signal, the identification information included in the calling signal is collated with the information stored in the read-only memory 17, and if they match, the information is accepted. In addition, in the flow shown below,
The number "2" shown after the signal is a read-only memory
18 'indicates that the signal contains the identification information, and the numeral "1" indicates that the signal contains the identification information stored in the read-only memory 18. The identification information stored in the read-only memories 18, 18 'and 17, 17' is the same as the identification code common to the wireless telephones 5, 5 '.
5'includes individual identification codes individually assigned. Here, the common identification code is used to identify another wireless telephone device.

The wireless telephone 5'has the calling signal 2 transmitted from the parent device 4.
To the receiver 1 via the antenna 11 'and the antenna duplexer 10'.
It is received at 9 '(step 208). The demodulated output of the receiver 19 'is applied to the control unit 9', which causes the control unit 9'to turn on the transmitter 8 '(step 209), and the call response signal 2
Is sent to the parent device 4 (step 210). Here, the call response signal 2 includes the storage identification information of the read-only memory 17 'as described above. The control unit 9'of the wireless telephone 5'turns off the transmitter 8'when the transmission of the call response signal 2 is completed (step 211).

After transmitting the calling signal 2 (step 207), the parent device 4 determines in step 212 whether or not a predetermined time has elapsed. If it is determined that the predetermined time has not elapsed, that is, it has not timed out, the process proceeds to step 213, and it is determined whether the receiver 14 has received the call response signal 2 from the wireless telephone 5 '. It The process returns to step 212 where it is determined in step 213 that the call response signal 2 has not been received yet. If it is determined in step 212 that the time-out has occurred and if it is determined in step 213 that the call response signal 2 has been received, the process proceeds to step 214. That is, the parent device 4
When a certain time has passed after the call signal 2 was sent from the mobile phone or when the call response signal 2 was received from the wireless telephone 5 ', step
Move to 214.

In step 214, a channel designation signal 1 for designating a predetermined communication channel is sent to the wireless telephone 5 using the control channel. It is determined in step 215 whether or not the wireless telephone 5 has received the channel designation signal 1.
When it is determined that the channel designation signal 1 is received, the control unit 9
Controls the synthesizer 20 to switch the radio frequencies of the transmitter 8 and the receiver 19 to those corresponding to a predetermined speech channel (S-CH ₁ ) (step 216). Then, the timer is operated (step 217), and when a predetermined time elapses, the transmitter 8
Is turned on (step 218).

The parent device 4 transmits the channel designation signal 1 (step 21
Following step 4), in step 219 the channel designation signal 2 is sent to the radio telephone 5'using the control channel. Here, the channel designation signal 2 designates the same communication channel as the channel designation signal 1. When the parent device 4 finishes sending the channel designation signal, it turns off the transmitter 16 (step 220) and controls the synthesizer 21 to switch the transmission / reception radio frequency to that corresponding to the communication channel (S-CH ₁ ) (step 220). 221) and then turn on transmitter 16 (step 222). As a result, a call using the call channel (S-CH ₁ ) becomes possible between the parent device 4 and the wireless telephone 5.

Whether or not the channel designating signal 2 transmitted from the parent device 4 has been received is determined by the wireless telephone 5'in step 22.
Made in 3. When it is determined in step 223 that the channel designation signal 2 is received, the process proceeds to step 224, the transmission / reception frequency is switched to that corresponding to the communication channel (S-CH ₁ ), and the standby state of step 225 is entered. 'Transmitter 8' of the radio telephone 5 in the waiting state is allowed only received from the parent device 4 using a wireless telephone 5 'is traffic channel (S-CH ₁₎ because it is off.

The wireless telephone 5 turns on the transmitter 8 (step 21
8) After turning on the audio frequency circuits of the transmitter 8 and the receiver 19 (step 226), the parent device 4 turns on the transmitter 16 (step 222) and then turns on the line relay (step 227) and its contact 23 Turn on. As a result, the wireless telephone 5 can make a call via the wired telephone line connected to the terminal 3 of the parent device 4 by using the handset 29 and the microphone 30. In this state, the wireless telephone 5'in the standby state can only receive the voice but cannot transmit it if the hook switch 7'is turned off.

Next, the operation when the parent device 4 receives an incoming call from the wired telephone line will be described.

FIG. 3 is an operation flow when the parent device 4 receives an incoming call from the wired telephone line. The detection of such an incoming call is performed by the control unit 15 judging the presence or absence of an incoming call based on the detection output of a detection circuit connected to a wire telephone line (not shown). In the embodiment clarified from this operation flow, the wireless telephones 5 and 5'are receiving intermittently at different periods, and the parent device 4 sends out an incoming call signal containing only the common identification code, to which the wireless telephone 5 , '(wireless telephone 5 is an operation flowchart) either the 5' and answers, 'led together to a predetermined speech channel (S-CH _2), wireless telephone 5' radiotelephone 5,5 generates a ringing tone to In response to this, the wireless telephone 5'in the off-hook state is connected to the wired telephone line, and the wireless telephone 5 enters the standby state.

When there is a call from the wired line in the parent device 4 (step 401), the transmitter 16 is turned on (step 40).
2) Then, an incoming call signal is transmitted using the control channel (C-CH) (step 403). Here, this incoming signal includes only the common identification code as described above.

By the way, the wireless telephones 5 and 5'intermittently receive signals at predetermined intervals in a state where no signals are received (battery saving operation). That is, the wireless telephone 5 turns off the receiver 19 in step 404, and when the set time of the timer 1 has passed (step 405), turns on the receiver 19 and there is no signal reception (step 407). (Step 408), the receiver 19 is turned off again. Similarly, the radiotelephone 5'turns off the receiver 19 'in step 409 and, when the set time of the timer 3 has passed (step 410), turns on the receiver 19' and no signal is received (step 412). When the set time of has passed (step 413), the receiver 19 'is turned off again.

Now, it is assumed that the incoming call signal transmitted from the parent device 4 in step 403 is received by the wireless telephone 5'and this reception is determined in step 412. In this case, the process proceeds to step 414, it is judged whether the received signal is an incoming call signal, and if it is an incoming call signal, the transmitter 8'is turned on (step 415) and an incoming call response signal is sent ( Step 41
6) The transmitter 8'is turned off (step 417). When the incoming call response signal is received by the parent device 4 within a predetermined time (step 418) from the sending of the incoming call signal (step 418) (step 419), channel designation for designating a predetermined call channel from the parent device 4 A signal is sent (step 420). Then transmitter 16 is turned off (step 42).
1). When the channel designating signal is received by the wireless telephone device 5 within a predetermined time (step 423) from the transmission of the incoming call response signal (step 423), and it is judged that this is the channel designating signal (step 423), The process moves to the flow indicated by the broken line block 24.

The channel designating signal sent from the parent device 4 is judged in step 407 in the wireless telephone 5, and the step 4
In step 24, the call channel (S-CH ₂ ) is switched because it is not an incoming call signal (step 425).
After that, a standby state is set (step 426).

The parent device 4 also turns off the transmitter 16 (step 42).
After 1), switching to the speech channel (S-CH ₂ ) is performed (step 427), and then the process proceeds to the flow shown in block 25. Note that the flows indicated by blocks 26 and 27 in FIG. 3 are the same.

FIG. 4 shows details of blocks 24 and 25 shown in FIG. In block 24 shown in FIG. 4, first, the transmitter 8 is turned off (step 312), the radio channel is switched to the speech channel (S-CH ₂ ) (step 313), and then the transmitter 8 is turned on again. (Step 3
14). Thus communication line between the speech channel (S-CH ₂₎ Parent device 4 and the wireless telephone set 5 by using 'is established.

Further, in block 25, the parent device 4 sends out a bell ringing signal using the above-mentioned communication channel (S-CH ₂ ) after turning on the transmitter 16 (step 311) (step 315).

When the radiotelephone 5'receives this bell ringing signal (step 319), it outputs a ringing tone from the speaker 31 (step 320), and when the hook switch 7 goes off hook in response to this ringing tone (step 318). using speech channel (S-CH ₂₎ sends an off-hook signal to the master device 4 (step 321), then to turn on the audio frequency circuit (step 322).

When the parent device 4 receives the off-hook signal from the wireless telephone 5 '(step 316), it turns on the line relay 23 (step 317). This allows the wireless telephone 5'to communicate with the wired telephone line via the parent device 4.

FIG. 5 shows still another operation flow when an incoming call is received from the wired telephone line. The operation flow shown in FIG. 5 is a flow after both the parent device 4 and the radio telephones 5 and 5'are guided to the same communication channel as in the flow shown in FIG. 3, for example. The parent device 4 determines whether there is an incoming call from the wired telephone line, that is, whether there is a calling signal (step 501), and when it determines that there is a calling signal, sends a bell ringing signal (step 50).
2) If not, a bell non-ringing signal is sent (step 503). Reception of the bell ringing signal or the bell non-ringing signal is determined in step 504 of the wireless telephone 5, for example, and the received signal is the bell ringing signal (step 50).
5) A ringing tone is transmitted (step 506), and the hook switch 7 is turned off in response to this ringing tone (step 50).
7) The transmitter 8 is turned on (step 508) and an off-hook signal is sent (step 509). This off-hook signal is received by the parent device 4 (step 510), which causes the parent device 4 to turn on the line relay 23 (step 51).
1). After transmitting the off-hook signal (step 509), the wireless telephone 5 turns on the audio frequency circuit (step 512) and enters the call state (step 513).

If it is determined in step 505 that the bell non-ringing signal is received, that is, if it is determined that the bell ringing signal is not received, and if it is determined that step 507 is on-hook, that is, it is determined that it is not off-hook yet. If so, the process returns to step 504. Also, step 5
When it is determined in 10 that the off-hook signal has not been received yet, the process returns to step 501. If it is determined in step 404 that no signal is received, step 514
And shift to the standby state. That is, in the configuration of FIG. 5, when there is an incoming call through the wired telephone line, a ringing tone is generated in both the wireless telephone 5 and the wireless telephone 5 ', and the wireless telephone that was previously off-hook enters the call state. The wireless telephone set becomes the standby state because the reception signal disappears. In this case, only the bell ringing signal may be used to set the standby state when the bell ringing signal does not arrive for a certain period of time.

FIG. 6 illustrates an intercom operation between wireless telephones in the wireless telephone device of the present invention. It is now assumed that the wireless telephone 5 is in a call and the wireless telephone 5'is in a standby state. In this state, the intercom switch of the wireless telephone 5
When 32 is turned on (step 601), the wireless telephone 5 sends an intercom signal using the call channel (step 602). When the parent device 4 receives the intercom signal of K (step 603), the parent device 4 sends a bell ringing signal using the call channel (step 604), and when the wireless telephone 5'receives this bell ringing signal (step 604). 605) The wireless telephone 5'sends a ringing tone, and when it goes off hook in response thereto (step 607), the audio frequency circuit of the receiver 19 'is turned on (step 608) and the wireless telephone 5'is ready to listen. Become. On the other hand, the wireless telephone 5 can transmit a voice while the intercom switch 32 is turned on.
In this state, when the intercom switch 32 'of the wireless telephone 5'is turned on (step 609), the transmitter 8'of the wireless telephone 5'is turned on (step 610) and the wireless telephone 5'.
Can talk. When the wireless telephone 5 turns off the intercom switch 32 (step 611), the wireless telephone 5
The transmitter 8 is turned off (step 612), and only the reception is possible. As described above, in the intercom state, the intercom switches 32 and 32 'can be used as press talk switches to make a call by the simplex method between the radio telephones 5 and 5'.

Also, if this intercom signal is used as a transfer signal and the system shown in FIG.
Can also be transferred to. When the transfer is enabled in this way, a special ringing sound may be generated at the time of transfer to notify that effect. Also, equipped with a secret button switch,
By this switch operation, a receiver of a telephone other than a wireless telephone capable of bidirectional communication may be turned off to enable confidential communication.

[Effects of the Invention] As described above, according to the present invention, connection control of a plurality of wireless telephones can be performed by the parent device, which is very economical, and the number of wireless channels to be used does not increase. From the viewpoint of usage, it can be expected to have a positive effect.

[Brief description of drawings]

FIG. 1 is a detailed block diagram showing an embodiment of the present invention, and FIGS. 2 to 6 are flowcharts showing the operation of the embodiment of the present invention. 4 …… Parent device, 5,5 ′ …… Wireless telephone, 7 …… Hook switch, 8,16 …… Transmitter, 9,15 …… Control unit, 10,13 ……
Antenna duplexer, 11,12 ... Antenna, 14,19 ... Receiver, 17,17 ', 18,18' ... Read-only memory, 20,21 ...
… Synthesizer.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location H04B 7/26 113 Z (72) Inventor Kari Murata 1-2356 Takeshi Yokosuka City, Kanagawa Japan Telegraph Telephone Corporation Yokosuka Electro-Communications Laboratory (72) Inventor Kazuhiro Yoshizawa 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Akio Yotsuya 5-33 Shiba, Minato-ku, Tokyo No. 1 inside NEC Corporation (72) Inventor Koichi Ito One share house at Toshiba Hino Factory, 3-1-1 Asahigaoka, Hino City, Tokyo (56) Reference JP-A-60-136436 (JP, A)

Claims (3)

[Claims] 1. A wireless telephone system comprising a parent device connected to a wired line and a plurality of wireless telephones connected to the parent device via a wireless line, wherein the plurality of wireless telephones are in a standby state. In the above, the master device performs an intermittent reception operation in which the reception state and the non-reception state are repeated asynchronously, and when the parent device receives an incoming call from the wired line, the master device simultaneously receives all of the plurality of wireless telephones performing the intermittent reception operation. A call signal is transmitted, and an incoming call response signal is returned from any one of the plurality of wireless telephones, so that all of the plurality of wireless telephones are guided to the same communication channel, and then a bell rings using the communication channel. A signal is transmitted, the wireless telephone generates a ringing tone by receiving the bell ringing signal, and the wireless telephone goes off-hook in response to the ringing tone and the parent device When the off-hook signal is returned to the wireless telephone device, the wired line is connected to the wireless telephone via the parent device to shift to a call state. 2. A wireless telephone other than the wireless telephone that has returned the incoming call response signal among the plurality of wireless telephones is in a standby state, and responds to the reception of the bell ringing signal of the plurality of wireless telephones. The method for controlling a radiotelephone device according to claim 1, wherein a ringing tone is generated only by the radiotelephone set that has returned the incoming call response signal. 3. In response to the reception of the bell ringing signal, all of the plurality of wireless telephones generate a ringing tone, and in the plurality of wireless telephones, responding to the ringing tone, off-hook and the parent device. The control of the radiotelephone device according to claim 1, wherein the radiotelephone returning an off-hook signal to the device is connected to the wired line via the master device and shifts to a call state. Method.