JPH0119774B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wireless device such as a personal wireless device that performs communication by setting a group number.

Conventional configuration and its problems Conventional wireless devices that perform communication by setting a calling number of the other party have not been equipped with a function to prohibit unauthorized use by others.

OBJECTS OF THE INVENTION The present invention is intended to eliminate the problems of the conventional example described above, and aims to prevent unauthorized use by others without adding a memory for passwords.

Structure of the Invention In order to achieve the above object, the present invention adds a password function using a group number memory.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 schematically shows a personal radio that is an embodiment of the present invention. In FIG. 1, 1 is a group number display device, and this group number display device 1 displays a five-digit group number input from a key input device 3. Reference numeral 2 denotes a device status indicator 2 that displays the status of the personal radio. For example, this device status indicator 2 displays "READY" when the device is in a standby state, and displays "TALK" when the device is in a talking state. 4 is a display interface, which displays the group number display 1, based on display data output from the central processing unit (CPU) 6;
Controls the equipment status indicator 2. 5 is a key input interface, and this key input interface 5 transmits key input data input from the key input device 3 to the CPU 6. 7 is a random access memory (RAM) within the CPU 6, and 8 is a read-only memory (ROM) that stores a program for controlling the CPU 6. 9 is an input/output interface, and this input/output interface 9 is connected to a modulation/demodulation circuit (modem) 12 and a radio device 13.
This is for connecting to CPU6. 10 is a timer within the input/output interface 9, and this timer 10 manages the time of the CPU 6. 11
is an IDROM in which the license number is stored; 14 is a phase locked loop (PLL) installed in the radio 13; 15 is a microphone for inputting audio;
16 is an antenna, and 17 is a speaker that outputs an audio signal. The CPU 6 reads the license number stored in the IDROM 11 and the group number stored in the RAM 7, specifies a wireless channel, transmits and receives control signals (synchronization signal, group number, channel number for communication, license number), and microphone 15. It has functions such as operation when the press-talk switch provided on the terminal is pressed, control of the display, and connection and control of telephone calls. The personal radio shown in Figure 1 is
It is a simple radio station that uses radio waves in the 900 MHz band, and 80 channels are allocated every 25 KHz (channel 1 is a control channel, channels 2 to 80 are communication channels). The user inputs the group number (calling number) of the other party using the key input device 3, and displays the input group number on the group number display 1 via the CPU 6. Also, the input group number is
It is held in RAM 7 in CPU 6. FIG. 2 shows the key input device 3. When storing the group number in the RAM 7, "0" and "*" are used in FIG.
Press "0", then "1", "2", "3", "4", "5"
By pressing , the group number "12345" is stored in the "0" position of the group number memory of the RAM 7. By the same operation, other group numbers can be stored in the "1" to "9" positions of the group number memory. The group number stored in the "0" position in the group number memory becomes the set lock keyword, and the personal radio will not operate unless the same number as the set lock keyword "12345" is keyed in in the password judgment routine described later. .

When making a call, the group number of the other party is read out from the group number memory. The group number of the read partner is
It is sent from the CPU 6 to the radio device 13 via the modem 12. At the same time, the CPU 6 sends the group number to the radio 13, sets the radio 13 to a transmission mode, and outputs a control signal from the radio 13 via the antenna 16.

In this way, by transmitting the group number that the other station is waiting for to the other station, it becomes possible to call and talk. When calling someone like this,
First, it is necessary to set the other party's group number in the personal radio, and frequently used group numbers are stored in advance in the RAM 7 inside the CPU 6. The RAM 7 also stores a group number (reception number) for receiving a call from the other party. The group number is made up of random five-digit numbers. In this embodiment, a password function is added by utilizing the group number memory included in the RAM 7 inside the CPU 6.

The operation of this embodiment will be explained below. The following explanation assumes that during the previous call, the set lock was set and the power of the personal radio was turned off using the "6*1" operation. When the power of the personal radio is turned on, power is supplied to the circuits inside the personal radio and the CPU 6 starts operating. The CPU 6 executes the program stored in the ROM 8 and sets a starting value in the circuit. After that, a password determination routine is executed.

At the beginning of the password determination routine, a display is made on the group number display 1 to inform that the next password is to be input. FIG. 4 shows an example of a display indicating that a password is being input. First, "input" a is displayed on the 5-digit group number display 1 for 1 second. Next, "your" b is displayed for 1 second, and finally "cord" c is displayed for 1 second, and then it waits for the password to be entered. This is done at step A in the password determination routine of FIG. Next, set the address of the group number (setlock keyword) that will be compared with the first character of the password entered in Step B in the internal RAM 7 of the CPU 6, and compare the data indicated by this address with the password 1 entered in Step C. Matching or mismatching with character data is performed in step D. In step D, if the input one-character data does not match the password, the process returns to step B and returns to the first address of the comparison group number. If the one-character data input in step D matches the password, in step E the address of the comparison group number is moved to the address of the next character, and in step F it is determined whether that address is the end address of the password. judge.
If it is determined that the address is not completed, the process returns to step C and the password is input again. This process is repeated until the comparison group number address is completed.

In this manner, after the user turns on the power of the personal radio, the personal radio will not operate unless the user inputs a preset arbitrary group number as a password from the key input device 3.

FIG. 5 shows the basic configuration of the device of the present invention.
In FIG. 5, 18 is a key input means, 19 designates the address of the group number (setlock keyword) stored in the "0" position in the group number memory 20,
Addressing means 21 sequentially reads out the characters of the group number from the beginning; comparison means 21 compares the character data of the read group number with the character data input from the key input means 18 character by character to determine whether they match or do not match; 22 is a control means for controlling the radio device based on the comparison result.

Effects of the Invention The present invention has the above configuration, and according to the present invention, the group number memory originally used for communication control is used without adding a password memory,
This has the advantage of adding a password function. Therefore, unauthorized use of the radio by another person can be prevented.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a radio device according to an embodiment of the present invention, Fig. 2 is a front view of a key input device of the same device, Fig. 3 is a flowchart of the same device, and Fig. 4 a
-c are diagrams showing examples of display on the group number display of the device, and FIG. 5 is a diagram showing the basic configuration of the device. 1...Group number display, 2...Equipment status display,
3...Key input device, 4...Display interface, 5...Key input interface, 6...
Central processing unit (CPU), 7...RAM, 8...
ROM, 9...I/O interface, 10...
...Timer, 11 ... IDROM, 12 ... Modulation/demodulation circuit (modem), 13 ... Radio, 14 ... Phase locked loop (PLL), 15 ... Audio input means, 16 ... Antenna, 17 ... Speaker ,1
8...Key input means, 19...Address designation means, 20...Group number memory, 21...Comparison means,
22...control means.

Claims (1)

[Claims] 1. A key input means for inputting key data, a group number memory for storing the group number input by this key input means, and specifying the start address of the group number stored in a predetermined memory of this group number memory,
an addressing means for sequentially reading out a plurality of character data constituting the group number; a comparison means for comparing each read character data with the character data inputted from the key input means to determine whether they match or not;
A wireless device comprising control means for controlling a wireless device based on a comparison result by the comparison means.