JPH0748904B2 - Wireless telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a multi-terminal type wireless telephone device for connecting a plurality of slave units to one master unit.

[Conventional technology]

In recent years, as a call channel setting method for a wireless line between a master unit and a slave unit, a multi-channel access method is provided in which a plurality of call channels are provided, a vacant call channel is found from among these call channels, and a call is made on this call channel. Has come to be used. For this reason, along with this, a multi-terminal type wireless telephone device in which a plurality of child devices are connected to one parent device has come to be considered.

Conventionally, as this multi-terminal type wireless telephone apparatus, for example, as disclosed in Japanese Patent Laid-Open No. 62-48131, one control channel is provided between one master unit and a plurality of slave units. , The transmission request signal is transmitted from the slave unit to the master unit.

[Problems to be solved by the invention]

However, in the conventional device having the above-described configuration, when the slave device requests the master device to make a call, the slave device occupies the control channel for a predetermined time. Since there is only one control channel between the slaves, it takes a lot of time to connect, and there is a problem that the operation of the call key and the end call key must be repeated many times.

[Means for solving problems]

The present invention has been made in view of the above problems, and provides a plurality of control channels between a master unit and a slave unit, and assigns each control channel to each slave unit,
A first memory for storing identification data and control channel data assigned to each of the slaves, and a second memory for storing identification data of each slave assigned to each control channel; When the identification data and the transmission request signal superimposed on the control channel read out from the first memory in response to the transmission operation of the slave unit are received, it is determined whether they match the identification data of the corresponding control channel in the second memory. The master unit is provided with a determination unit for enabling the call and a control unit for permitting the call based on the determination output of the determination unit.

[Action]

Whether or not the master unit and the slave unit can be connected is determined only by comparing the control channel transmitted from the slave unit and the identification data corresponding to the control channel stored in the master unit.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 2 is a block diagram of a wireless telephone device showing an embodiment of the present invention.

In the figure, the radiotelephone device includes one parent device 1 and (N
+1) wireless telephones 2. Here, N is a positive integer.

The parent device 1 is connected to a wire telephone line (not shown) via the terminal 3. The signal from the wired telephone line input from the terminal 3 is applied to the transmitter 6 via the line relay 4 and the hybrid circuit 5, and the output of the transmitter 6 is transmitted from the antenna 8 via the antenna duplexer 7. The signal received from the antenna 8 is applied to the receiver 9 via the antenna duplexer 7, and the output of the receiver 9 is output to the wired telephone line via the hybrid circuit 5, the line relay 4, and the terminal 3. The synthesizer 10 determines the radio frequencies of the transmitter 6 and the receiver 9, and the control unit 11 controls the transmitter 6, the receiver 9 and the synthesizer 10. A read-only memory (ROM) 12 stores identification information used for controlling connection with the wireless telephone 2, which will be described later, and this identification information is used by the control unit 11.

The (N + 1) wireless telephones 2 are respectively connected to the parent device 1 via a wireless line and have the same configuration, but only the information stored in the read only memory (ROM) 20 is different. The signal transmitted from the parent device 1 is received by the antenna 21, and the receiver 23 via the antenna duplexer 22.
And the output of the receiver 23 is applied to the handset 22 and is sounded. The signal input from the microphone 25 is
It is transmitted to the parent device 1 via the transmitter 26, the antenna duplexer 22, and the antenna 21. The synthesizer 27 determines the radio frequencies of the receiver 23 and the transmitter 26, and the controller 28 controls the receiver 23, the transmitter 26 and the synthesizer 27.
A speaker 30 connected to the synthesizer 27 is a speaker for generating a ringing tone, and a call key 31 and an end call key 32 are switches for giving a command to the control unit 28.

Further, the ROM 12 of the parent device 1 is provided with two control channels C-CH1 and C-CH2 as shown in Table 1 below, and the identifications assigned to the respective wireless telephones 2 are assigned to the respective control channels. Data (ID) is stored and control channel C-CH
The ID of the wireless telephone 2 to which an odd number is assigned is stored in 1 and the ID of the wireless telephone 2 to which an even number is assigned is stored in the control channel C-CH2.

Further, in each ROM 20 of the wireless telephone 2, the control channels and IDs corresponding to Table 1 are stored as shown in Table 2 below. That is, the No. 1 RO of the wireless telephone 2
Information of control channel = C-CH1 and ID = 1 is stored in M20, and control channel = C-CH2 and
Information of ID = 2 is stored.
Control channel information and I
D information is stored.

In such a configuration, the first operation of the present embodiment will be described.
A description will be given below with reference to the flowchart shown in the figure.

FIG. 1 shows an operation flow when a call is made from the wireless telephone 2 to the parent device 1.

In the figure, the wireless telephone 2 continues to determine whether or not the call key 31 is pressed to make a call request, and the standby state is continued (step 201). When there is a call origination request, this request is detected by the control unit 28, and the control unit 28 turns on the transmitter 26. Next, if the radiotelephone 2 that has made a call request is, for example, the radiotelephone 2 with an ID of 1, the call request signal is superimposed on the control channel C-CH1 assigned to it, and this is used as a call signal, and the antenna duplexer 22, The data is transmitted to the parent device 1 via the antenna 21 (step 202). Note that the control unit 28 turns off the transmitter 26 when the transmission of the calling signal is completed.

The parent device 1 continues to judge whether or not a call signal is transmitted from the wireless telephone 2 and keeps waiting (step 20).
3). However, when the call signal is transmitted from the wireless telephone 2 as described above, it is received by the receiver 9 via the antenna 8 and the antenna duplexer 7, and this demodulated output is output by the control unit.
Added to 11. The control unit 11 determines whether or not the control channel obtained by this demodulation output is C-CH1 (step 204). If it is C-CH1, the ID superimposed on this is further added.
Is determined to be an odd number (step 205). ID
Is not an odd number, the process returns to step 203, and if the ID is an odd number, it is determined that the control channel transmitted from the wireless telephone 2 and the ID as the identification data stored in the parent device 1 match and the call is made. Allow and proceed to the next step. If the control channel is not C-CH1 in step 204,
It is determined whether the control channel is C-CH2 (step 206), and if it is not C-CH2, the process returns to step 203 and C-CH2
If so, it is further determined whether the ID is even (step 207). If the ID is not an even number, the process returns to step 203. If the ID is an even number, it is determined that the control channel transmitted from the wireless telephone 2 matches the ID stored in the parent device 1, and the call is permitted, Go to the next step.

When the control unit 11 permits the call, the transmitter 6 is turned on and the vacant call channel, for example, the call channel S-CH1
Is specified, the specified communication channel S-CH1 is encoded, and this is used as a communication channel specification signal to control channel C-
It is superimposed on CH1 and transmitted to the wireless telephone 2 via the antenna duplexer 7 and the antenna 8 (step 208). When the call channel designation signal is transmitted, the synthesizer 10 is controlled to switch the call channel according to the frequency of the designated call channel S-CH1 for the transmission / reception radio frequency of the transmitter 6 and the receiver 9 (step 209).

On the other hand, after transmitting the calling signal in step 202, the wireless telephone 2 waits for the call channel designating signal to be sent from the parent device 1 (step 210).
When the call channel designation signal from the
Controls the synthesizer 27 to control the transmitter 26 and the receiver 23.
The communication channel is switched according to the frequency of the transmission / reception radio frequency of the communication channel S-CH1 designated by the parent device 1 (step 211).

Therefore, the parent device 1 and the wireless telephone 2 that transmitted the calling signal
And the call channel matches and the call becomes possible (steps 212 and 213), and when the talker's call ends, the end key 32 of the wireless telephone 2 is pressed, and this pressing operation corresponds to the pressing operation of the call key 31. Similarly, the call is transmitted to the parent device 1 and the call ends (steps 216 and 217).

In the above embodiment, two control channels are provided and a plurality of radio telephones 2 are assigned to each control channel as an odd number and an even number, but the control channel and ID are limited to this number. It is not something that will be done.

〔The invention's effect〕

As described above, according to the present invention, a plurality of control channels are provided between the master unit and the slave units, each control channel is assigned to each slave unit, and identification data of each slave unit for each control channel is stored. By providing the memory in the master unit, the connection between the master unit and the slave unit can be determined only by comparing the control channel transmitted from the slave unit with the identification data corresponding to the control channel stored in the master unit. The connection time between the base unit and the handset is shortened, and it takes a lot of time to connect the calls from the handset at a time, as in the past, and the operation of the talk key and the end call key. This has the effect of solving the problem of having to repeat the above procedure many times.

[Brief description of drawings]

FIG. 1 is a flow chart showing an embodiment of the present invention,
The figure is a block diagram showing the configuration of this embodiment. 1 ... Parent device, 2 ... Wireless telephone, 3 ... Terminal, 4 ...
Line relay, 5 …… Hybrid circuit, 6,26 …… Transmitter, 7,22 …… Antenna duplexer, 8,21 …… Antenna, 9,23
…… Receiver, 10,27 …… Synthesizer, 11,28 …… Control block, 12,20 …… ROM, 31 …… Call key, 32 …… End call key.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location 7304-5K H04B 7/26 113 Z

Claims (1)

[Claims] 1. A wireless telephone device comprising a master unit connected to a central office line and a plurality of slave units connected to the master unit via a wireless line, in a control channel between the master unit and the slave unit. A plurality of channels are provided, each control channel is assigned to each of the slaves, and a first memory for storing identification data and control channel data assigned to each is provided in each slave. A second memory that stores identification data of each slave unit assigned corresponding to each control channel and a control channel read from the first memory in response to a transmission operation of the slave unit are superimposed. When the identification data and the transmission request signal are received, the determination means for determining the coincidence with the identification data of the corresponding control channel in the second memory and the determination output of this determination means are output. Wireless telephone apparatus and control means for permitting a call Hazuki, characterized in that provided in the base unit.