JPH0618328B2 - Personal wireless equipment - Google Patents

Description

The present invention relates to a personal wireless device, and more particularly to a personal wireless device capable of receiving a code relating to a call request transmitted from a slave wireless communication device.

[Conventional technology]

As shown in FIG. 1, the personal radio device has a call button K _S , P.
An operation member including a TT button 1, a reset button 2, a monitor button 3, a recall button 4, a hold button 5, numeral buttons K _{0 to} K ₉ provided on a numeral board 6, a data button 7, and an address button 8 is provided. . The data by the operation is stored in the RAM 10 by the calculation of the CPU 9 via the I / O buffer 14 and the data bus 12. Further, a radio wave reception state such as an impression is obtained from the analog-digital converter 19, and a received control signal is obtained from the code receiver 18 and calculated as input data. The output data formed by the calculation is sent to the terminal 15b (setting of transmission / reception frequency) of the PLL circuit 15, the code generator 16 (setting of control signal to be transmitted), and the signal switch 17 (regulation of transmission). The calculation by the CPU 9 can be performed by the standby operation program, the call operation program, etc. shown in FIG. A group code (2 to 5 digits) corresponding to a calling number on the telephone is required for calling. Does this call for group codes are generated directly by operating the numeric buttons K ₀ ~K ₉ or pre beforehand numerical buttons K ₀ ~K _9,
The group code stored in the RAM 10 is obtained by reading with the address button 8 and the numeric buttons K _{0 to} K ₉ (speed dial in telephone). The RAM 10 includes group code memories M _{0 to} M _n shown in FIG.
And M ', and a calling group code flag area F _i is provided for reading the stored group code for calling. The group code memories M _{0 to} M _n and M ′ are 32 bits 1
Channel code _{0 to} 7 bits in word structure cm ₀
~ Cm ₉ , cm ', 8 bits to 27 bits are group code m ₀ ~
m _9, m ', 28 bit A storage flag, 29 bits are assigned to B storage flag. Group code memory is M
“0000” is stored as ₀ . When 30 bits of the group code memory M ₀ are set to act, the group numbers of the outgoing call and the incoming call are “00000”. The group code memories M ₁ and M ₂ are used for incoming calls. The group code memory M'stores the received group code m'for work and the received channel code cm '. The group code m'and the channel code cm 'are used for setting a communication channel and comparing the received group code m'with the stored group codes m _{0 to} m ₉ .

Personal radio is a control channel (frequency is 903.0
125MHz) and call channel (903.0125MHz to 25kH)
Communicate on 79 channels (z width). Power is turned on and second
When the standby operation program shown in the figure is executed from the head address, it is set to the control channel. While the control signal is not received by the control channel, it returns to the head address via the Z connector again. The standby operation program is returned from the Z connector by the operation of the reset button 2 and started, and it is determined whether or not the call button K _S , the monitor button 4, and the incoming call (reception of the control signal). The calling operation program (the head address is the B connector) selects a channel for empty call. The capture operation program (the first address is the A connector) sets the selected communication channel. The reception operation program (the head address is the C connector) randomly monitors the call channel. The call operation program (the head address is the D connector) manages one call, and after the call ends or is forcibly disconnected, transitions to the standby state via the Z connector. The transmission request by the PTT button 1 is determined by the acquisition, reception, and communication operation program. When the address button 8 and the numeric buttons K _{0 to} K ₉ (for example, K ₃ ) are operated, a desired bit of the calling group code flag area F _i shown in FIG. 3 is acted. For example, when 3 bits become an act, the group code m ₃ stored in the group code memory M ₃ becomes the calling group code. When the call button K _S is operated, the operation sequence of the standby operation program advances to the call operation program via the B connector. In the calling operation program, a call channel is randomly set and the antenna 32 and RF unit 3 are set.
0, the mixer 28, the intermediate frequency circuit 27, the wave detector 25, and the analog-digital converter 19 are used to inspect whether or not the set communication channel is present. When the empty call channel is selected, the channel code cm ₃ is stored in the group code memory M ₃ from bit 0 to bit 7. After memory, group code m
₃ (20 bits), channel code cm ₃ (8 bits),
A control signal composed of a calling code (48 bits ... stored in the ROM 11 as an ATIS signal), a bit synchronization signal of 150 bits) and a frame synchronization signal (15 bits) is organized and transmitted from the control channel. Channel code when transmission is completed
call channel is set by also preparative not a Ki catching operation program cm _3. Depending on the setting, a ready display indicating that communication preparation is completed is displayed on the display 20. When the PTT button 1 is pressed, the communication operation program is executed via the D connector.
The transmission switch 17 operates by executing the communication operation program, and the microphone 22, the audio circuit 24, the modulator 26,
The audio signal is transmitted via the mixer 29 and the high frequency amplifier 31. If either _{one of} the group codes m ₁ and m ₂ set for standby on the called side personal wireless device matches the group code m ₃ specified for calling on the calling side personal wireless device, a capture operation program Is executed and the called-side personal wireless device receives the channel code c included in the received control signal.
The call channel is set according to m '. For this reason,
The voice signal of the calling side personal wireless device is output to the speaker 21 of the called side personal wireless device. In this case, since the matching of the group codes is regarded as a response request, the response operation such as on-hook or off-hook found in a telephone or the like is unnecessary.

[Problems to be Solved by the Invention]

The above-described conventional personal wireless device is installed for a base station or mobile. In addition to this device, a power source for a base station or a portable power source for an automobile or the like must be prepared, so that it has a drawback that it is not suitable for portable use such as a transceiver.

The present invention has been made in view of the above points, and an object of the present invention is to provide a personal wireless apparatus capable of making a call request from a child side wireless communication device.

[Means for Solving the Problems]

In the present invention, a shared reception channel and a dedicated transmission channel (hereinafter, referred to as a dedicated channel l _i , i is 1, 2, ..., 8) are provided for the child side wireless communication device. The voice signal received by the master personal wireless device is output from the shared reception channel to the slave wireless communication device without any operation. The dedicated transmission channel is constantly scanned by the parent-side personal wireless device to detect the presence or absence of a key operation code from the child-side wireless communication device. Key operation code to fix a dedicated channel l _i to be detected, other dedicated channels l _i
Key operation code via is not accepted.
The fixed dedicated channel l _i is provided with a means for releasing it when returning to the standby operation program.

〔Example〕

FIG. 4 is a block diagram showing an embodiment of the personal radio apparatus according to the present invention, and FIG. 4 will be described. The same parts in FIG. 4 and FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, 40 is a slave side PLL circuit. Child side PLL circuit 40
Has a programmable counter 41, and receives dedicated channel frequency data from the terminal 40b via the data bus 12 via the I / O buffer 14. The slave side PLL circuit 40 receives the dedicated channel frequency data from the terminal 40b and supplies a predetermined local signal to the mixer 46.

FIG. 5 is a flowchart of the child-side key operation program. The child side key operation program is inserted at the return position of the standby operation program shown in FIG. 2, jumps to the P ₁ connector of the child side key operation program, and returns from the S ₁ connector to the jump source. When there is no request for transmission of the capture operation program, it jumps to the P ₂ connector and returns from the S ₂ connector to the jump source. When there is no request for transmission of the receiving operation program, it jumps to the P ₃ connector and returns from the S ₃ connector to the jump source. If there is no request for transmission of the communication operation program, it jumps to the P ₄ connector and returns from the S ₄ connector to the jump source. P ₁ ~
The program logic from the P ₄ connector to the S _{1 to} S ₄ connectors is the dedicated channel l _{1 to} l _n (n
= 8) is scanned, and no key operation code is transmitted by all the child side wireless communication devices. PI
Is a program indicator, and the program branches according to the numerical value of PI. That is, the dedicated channel l _i is changed for the P ₁ and P ₂ connectors, and the changed dedicated channel l _i is fixed during a call and during monitoring. Therefore, when the dedicated channel l _i is set, it can be received by the other child side wireless communication device, but becomes invalid even if the transmission or operation of the numeral board is performed. When the dedicated channel l _i is determined and the slave side switch SI operates and the code receiver 18 receives the key operation code, the slave side switch SI is restored and the control signal from the partner side personal wireless device is provided. Further, a key code analysis subroutine is executed via XX '. When the call button on the child side is pressed, the call operation program is started from the B connector. When the PTT button is pressed, the call operation program is executed from the D connector. When the child monitor button is operated, the reception operation program is executed from the C connector. When writing is performed to the group code memories M _{1 to} M ₉ shown in FIG. 3, the process returns via the Z connector. When reading, the standby operation program is started from the B connector, which is regarded as the operation of the call button.

The group code memories M _{1 to} M ₉ shown in FIG. 3 may be individually provided for the child side wireless communication device. In this case, memory management becomes complicated.

It is convenient that the radio waves used for the slave radio communication device and the master personal radio device are weak radio waves of 15 μV / m or less at 100 m because they are not regulated by the Radio Law and the operation member can be carried.

The key operation code shares the code receiver 18, and it is desirable to use the same formula as the control signal.

The program logic may be changed to the wiring logic. Further, the number of child side wireless communication devices is not limited.

〔The invention's effect〕

Since the personal radio apparatus according to the present invention comprises code receiving means for receiving the code relating to the call requesting means and the like, and carrier frequency selecting means for selecting the carrier frequency received by the code receiving means, the slave side It has the feature that it can receive the code transmitted from the wireless communication device and can select the carrier frequency related to the slave wireless communication device. For this reason,
There is an effect that the master personal wireless device can be controlled by the plurality of slave wireless communication devices.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional personal wireless device, and FIG.
Fig. 3 is a flowchart of the program used in Fig. 1, 3
1 is a memory block diagram of FIG. 1, FIG. 4 is a block diagram showing an embodiment of a personal radio apparatus according to the present invention, and FIG. 5 is a flow chart of a child side key operation program of FIG. 1 ... PTT button, 2 ... reset button, 3 ... monitor button, 4
...... Recall button, 5 ...... Hold button, 6 …… Number board, 7
... Data button, 8 ... Address button, 9 ... CPU, 10 ...
... RAM, 11 ... ROM, 12 ... data bus, 13 ... address bus, 14 ... I / O buffer, 15 ... PLL circuit, 16 ... code generator, 17 ... transmission switch, 18
…… Code receiver, 19 …… Analog-digital converter, 2
0 ... Display, 21 ... Speaker, 22 ... Microphone, 23,24 ... Audio circuit, 25 ... Detector,
26 ... Modulator, 27 ... Intermediate frequency circuit, 28, 29 ...
... mixer, 30 ... RF unit, 31 ... high-frequency amplifier, 32 ... antenna, 33 ... reference signal generator, 34
...... Phase comparator, 35 …… Low-pass filter, 36 ……
Voltage controlled oscillator, 37 ... Programmable counter, 3
8 ... Send / receive switcher, 40 ... PLL circuit for child side, 41 ...
… Programmable counter, 43… Transmitter circuit for child side,
44 ... Child side antenna, 45 ... Child side RF unit, 46 ... Mixer, 47 ... Child side intermediate frequency circuit, 4
8 …… Detector for child side, SI …… Switch.

Claims (1)

[Claims] 1. A constitution is provided in which a parent side personal wireless communication device and a child side wireless communication device communicate with each other by weak radio waves, and communication with a partner station of personal wireless communication is performed directly from the parent side personal wireless communication device or the child side. A personal wireless device comprising means for communicating from a wireless communication device to a master personal wireless communication device as a relay device, comprising means for receiving a weak electric wave from the master personal wireless communication device, a code signal and a voice signal. A plurality of slave wireless communication devices each having a different transmission frequency and a frequency scanning device for receiving the transmission of the slave wireless communication device are provided, and when the signal is received, the master personal wireless communication device is controlled. Code detecting means for detecting a code signal, control means for controlling the parent personal wireless device according to the code when the code is detected by the code detecting means, and the parent persona by the control means As a repeater for communication between the slave side wireless communication device and the partner station of personal wireless communication while the wireless communication device is controlled, it holds the received signal from the wireless communication device until the end of the call, and another child device with a different transmission frequency A personal wireless device configured with a master personal wireless communication device having means for prohibiting control from the wireless communication device.