JP2000013275A - Individual calling system specific small-power transceiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the individual calling system specific small-power transceiver capable of individual calling by transmitting a code signal consisting of a specific group number, a transmitting station ID number, and an opposite-station ID number over a free channel belonging to the specific channel group number. SOLUTION: A normal mode and an individual calling mode are switched according to the way how the transceiver is powered ON. Under the control of a control part 4, a receiving circuit 2 and a transmitting circuit 3 perform transmission and reception corresponding to a channel. Each transceiver has an ID number assigned so as to identify the transceiver itself. In an individual calling mode state, a free channel is searched for by automatically scanning plural channels belonging to a specific channel group when transmitted and the free channel is used to send out the code signal consisting of the group number of the group that the transceiver belongs to, the ID number of the transceiver itself, and the ID number of a desired communication opposite party.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an individual paging system specific low power transceiver.

[0002]

2. Description of the Related Art Conventionally, in a specific low power transceiver, a user usually communicates with a vacant channel among 9 channels (channels), but there is an automatic channel switching system (MCA system) in which the trouble is saved. In the MCA method, a vacant channel in 11CH is automatically adjusted without using a channel by the user side by using a control unit channel dedicated to calling and waiting. As described above, in the specific low-power transceiver, the operation and procedure are different between the normal operation (simplex system) and the MCA system. In general, the 9CH (channel) simplex system is widely used. It is essential.

[0003]

By the way, it is complicated to implement both methods in the same system.

[0004] It is an object of the present invention to provide an individual paging specific low power transceiver having a novel configuration.

[0005]

According to a first aspect of the present invention, there is provided an individual paging method specifying low power transceiver having a specific group number, a specific channel group number, and an own station ID number. A low-power transceiver, wherein a code signal including a specific group number, a transmitting station ID number, and a partner station ID number is transmitted using an empty channel belonging to the specific channel group number.

According to a second aspect of the present invention, there is provided an individual paging method specific low power transceiver according to the present invention.
A low power transceiver having a unique number, comprising: a code signal comprising a group number, a transmitting station ID number, and a partner station ID number on a specific channel belonging to the specific channel group number; Discriminating whether the ID number and the counter station ID number are the same as the specific group number and the own station ID number, and when the discriminating means determines that they are the same, the individual paging method having the transmitting station ID number in the specific channel. It is characterized by communicating with a specific low power transceiver.

According to a third aspect of the present invention, there is provided an individual paging method specific low power transceiver according to the present invention.
And a code signal including a specific group number, a transmitting station ID number, and a partner station ID number when transmitting, by transmitting a code signal including a specific group number, a transmitting station ID number, and a partner station ID number. When transmitting and using the standby mode, a plurality of specific channels belonging to the specific channel group number are scanned, and the group number and the partner station ID number in the code signal received on the specific channel are the specific group number and the own station. ID
It is determined whether or not the number is the same as the number.
It is characterized by communicating with a specific low power transceiver having an individual calling method having a number.

According to a fourth aspect of the present invention, there is provided an individual paging method specific low power transceiver according to the third aspect of the present invention, wherein a plurality of transceivers belonging to the same group are different from each other. By using a channel, a plurality of communications can be performed simultaneously.

According to a fifth aspect of the present invention, there is provided an individual paging method specific low power transceiver according to the third aspect of the present invention, wherein a paging code number is used instead of a partner station ID number. Simultaneous calling is possible by transmitting.

According to a sixth aspect of the present invention, there is provided an individual paging system specific low power transceiver according to the present invention.
An individual paging method specific low power transceiver having a number and a mode switching means for switching between a normal mode and an individual paging mode. In the individual paging mode, when transmitting, a specific group number, a transmitting station ID number, A code signal including the ID number of the other station is transmitted using an available channel belonging to the specific channel group number, and in a standby mode, a plurality of specific channels belonging to the specific channel group number are scanned and received by the specific channel. It is determined whether or not the group number and the partner station ID number in the code signal are the same as the specific group number and the own station ID number. If the determination unit determines that they are the same, the transmitting station is used in the specific channel. Individual call with ID number Wherein the communicating with the formula specified low-power transceiver.

[0011]

FIG. 1 is a block diagram showing an embodiment of a specific paging specific low power transceiver according to the present invention. 1 is an antenna, 2 is a receiving circuit, 3 is a transmitting circuit, 4 is a control unit of the microcomputer CPU, 5 is a display unit, and 6 is an internal memory of the CPU.

FIG. 2 is an external view showing an embodiment of the individual paging system specific low power transceiver according to the present invention.
(A) is a front view, (B) is a left side view. In FIG. 2, 11 to 17 are operation keys, 11 is a power key,
12 is a press talk key and simultaneous call / talk key, 13
Is the channel down key and simultaneous call / talk key, 14
Is the channel up key and the receiving side "1" designation key, 15
Is a monitor key / reception side "2" designation key, 16 is a function key / reception side "3" designation key, 17 is a radio switching key / reception side "4" designation key, and 18 is a display.

FIG. 3 is a schematic diagram showing an example of use of the individual paging method specific low power transceiver according to the present invention. FIG.
In FIG. 1, T1, T2, T3 and T4 respectively correspond to those in FIG.
The individual paging method specific low power transceiver having the same configuration as that shown in FIG. 1 can communicate with each other by setting a specific empty channel in 9CH. (Note that, in this example, four transceivers are illustrated, but the number is not limited to this.)

According to the present invention, in the above configuration, as described below, it is possible to use in the individual call (connection) mode in addition to the conventional normal mode.
The normal mode and the individual call (connection) mode are switched by, for example, turning on the power of the transceiver. Power key 1
Simply pressing 1 powers on the transceiver and goes into normal mode, where a particular key (eg, key 17) is pressed.
When the power key 11 is pressed while pressing, the power is turned on and the individual call (connection) mode is set.

First, in the normal mode state, by switching the channels one by one by operating the channel up / down key 13 or 14, the available channels (9 channels), for example, four channels are used.
Are set, and transmission and reception corresponding to four channels are performed by the reception circuit 2 and the transmission circuit 3 based on the control of the control unit 4. At this time, a display drive signal from the control unit 4 indicates on the display device 5 (display 18) that the currently used transmission / reception channel is four. Channel up / down key 13 or 14
When the used channel is changed from 4 channels to another channel by the key operation of, the receiving circuit 2 and the transmitting circuit 3 perform transmission / reception corresponding to the changed other channel based on the control of the control unit 4, and Another channel after the change is displayed on the display device 5 (display 18).

Next, the individual call (connection) mode will be described. First, each transceiver is assigned an individual number (ID number) for identifying the transceiver. For example, an ID number "1" is assigned to the transceiver T1, an ID number "2" is assigned to the transceiver T2, an ID number "3" is assigned to the transceiver T3, and an ID number "4" is assigned to the transceiver T4. Each ID
The numbers are stored in advance in the memories 6 of the corresponding transceivers T1 to T4.

Further, each transceiver is assigned a group number for identifying a group composed of a plurality of transceivers, so that transceivers having the same group number can communicate with each other. This group number is similarly stored in the memory 6 of each transceiver in advance.

Further, the used channel 9CH is divided into several groups, and a channel group number is assigned to each group. For example, channels 1 to 3 of the used channels are channel groups “a”, 4
Channels 6 to 6 are defined as channel group “b”, and channels 7 to 9 are defined as channel group “c”. These channel group numbers a, b, and c are stored in advance in the memory 6 of each transceiver so that each transceiver in the same group uses the same channel group number. (In this example, the channel group is 3
Although they are divided into groups, the present invention is not limited to this, and any group may be used. )

Therefore, at the time of transmission in the individual call mode, a plurality of channels belonging to a specific channel group are automatically scanned to find an empty channel from among them, and the transceiver belongs to the empty channel using the empty channel. A code signal (including tone frequency) including the group number of the group, its own ID number, and the ID number of the other party with whom it wants to communicate is transmitted.

On the other hand, at the time of standby, a plurality of channels belonging to a specific channel group are automatically scanned, and the content of the received code signal (group number, partner ID number, own ID)
Check the number to determine whether or not you are called. If you are called, stop on that channel, and then give the other party a code signal (group number, other party's ID number, your own ID number) ) To make a line connection. As a result of checking the content of the code signal, if the user is not called, the scanning is restarted without stopping at the channel.

Next, a specific example will be described. In FIG.
It is assumed that the transceivers T1 to T4 are operated with, for example, a group number "82" and a channel group number "a". When the side "4" designation key 17 is pressed, the used channels 1CH, 2CH and 3CH belonging to the channel group "a" are automatically scanned at predetermined time intervals (for example, at intervals of about 140 milliseconds). To find an empty channel, for example 2CH, from 2C
H, the group number “82” including the group number “82”, the own station ID number “1”, and the partner station ID number “4”
A code signal (including tone frequency) of "1, 4" is transmitted. (Similarly, when calling the transceiver T2, pressing the monitor key / receiving side "2" designation key 11 automatically sends a code signal "82, 1, 2" to call the transceiver T3. Automatically sends a code signal "82, 1, 3" when the function key / receiver "3" designation key is pressed.)

The code signals "82, 1, 4" transmitted from the transceiver T1 have the same group number "82".
Is accepted after reception by the transceivers T2, T3 and T4 having the same group number, but is rejected if the other transceivers having the other group numbers are confirmed to have different group numbers after reception. The transceiver T4 automatically scans the use channels 1CH, 2CH, and 3CH belonging to the channel group “a” at a predetermined time interval (for example, an interval of about 140 milliseconds) during standby, and scans the code signal received on the 2CH. The ID number "4" is confirmed from the contents "82, 1, 4", it is determined that the user is being called, the operation is stopped at 2CH, and the code signal "82, 4, 4" is sent to the other party with the ID number "1". 1 "as a result of which a line connection is established between the transceivers T1 and T4 and communication is possible.

Next, the operation in the individual call (connection) mode will be described with reference to the flowchart shown in FIG. First, in step S1, it is determined whether or not the current channel is BUSY. If there is no BUSY, the process proceeds to S2, and it is determined whether or not there is a transmission request. If there is no transmission request, the process proceeds to S3 to switch the channel. , Returning to S1. If BUSY exists in S1, the process proceeds to S4, and the own station code (own station ID number)
Is determined, and if there is no own station code, the process proceeds to S5,
Switch the channel and return to S1. If it is determined in S4 that the own station code is present, the process proceeds to S6, where the line is connected. Then, in S7, it is determined whether or not the communication is completed.
If yes, return to S1. If there is a transmission request in S2, the process proceeds to S8, and it is determined whether the carrier sense is OK or NG. If it is NG, the process proceeds to S9, and it is determined whether or not all channels are completed. If no, the channel is switched in S10. Then, the process returns to S8, and if yes, the process proceeds to S11, cancels the transmission, and then returns to S1. If the answer to S8 is OK, the process proceeds to S12 to transmit the code. Then, in S13, it is determined whether a code from the other party is waiting. If there is no code, the process returns to S1, and if there is a code, the process proceeds to S6.

As described above, the individual call (connection) mode has the following advantages. 1. The user can communicate only with the partner with whom he wants to communicate without being aware of the CH. 2. You can wait quietly until you are called. 3. As compared with a normal transceiver, it can be realized only by software control of a microcomputer, so that no hardware cost is required.

[0025]

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications and applications are possible. For example, in the individual call mode state, it is possible to perform a simultaneous call for calling all the partner transceivers having the same group number. That is, all the transceivers having the same group number store the paging code number (for example, "5") in their respective memories in advance, and when the paging is desired to be performed, the transmitting station transceiver transmits to the other party in the code signal. A simultaneous call code number (for example, "5") is transmitted instead of the station ID number. More specifically, a code signal of "82, 1, 5" is automatically transmitted simply by pressing the press-talk key and simultaneous call / talk key 12 in the individual calling mode. All the standby transceivers belonging to the same group number confirm that the paging is the paging from the paging code number "5" in the content of the received code signal "82, 1, 5". The line is connected and communication is possible.

[0026]

According to the present invention, it is possible to obtain an individual call system specific low power transceiver capable of individual call (connection).

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an individual paging method specific low power transceiver according to the present invention.

FIGS. 2A and 2B are external views showing an embodiment of the individual paging method specific low power transceiver according to the present invention, wherein FIG. 2A is a front view and FIG.

FIG. 3 is a schematic diagram illustrating an example of use of a specific paging specific low power transceiver according to the present invention;

FIG. 4 is a flowchart illustrating an operation in an individual call (connection) mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Receiving circuit 3 Transmitting circuit 4 Control part 5 Display part 6 Memory CPU Microcomputer

Claims (6)

[Claims] 1. An individual paging specific low power transceiver having a specific group number, a specific channel group number, and a local station ID number, comprising a specific group number, a transmitting station ID number, and a partner station ID number. An individual paging scheme specific low power transceiver, wherein the code signal is transmitted using an empty channel belonging to the specific channel group number. 2. An individual paging specific low power transceiver having a specific group number, a specific channel group number, and a local station ID number, wherein the code comprises a group number, a transmitting station ID number, and a partner station ID number. A signal is received on a specific channel belonging to the specific channel group number, and it is determined whether the group number and the partner station ID number are the same as the specific group number and the own station ID number. And communicating with the individual paging scheme specific low power transceiver having the transmitting station ID number on the specific channel. 3. An individual paging system specific low power transceiver having a specific group number, a specific channel group number, and an own station ID number, wherein at the time of transmission,
A code signal including a specific group number, a transmitting station ID number, and a partner station ID number is transmitted using an empty channel belonging to the specific channel group number. Scan a specific channel,
It is determined whether or not the group number and the partner station ID number in the code signal received on the specific channel are the same as the specific group number and the own station ID number. And communicating with an individual paging method specific low power transceiver having the transmitting station ID number. 4. The individual low power transceiver according to claim 3, wherein a plurality of transceivers belonging to the same group can simultaneously perform a plurality of communications by using a plurality of different channels. Individual calling method specific low power transceiver. 5. The individual paging method specifying low power transceiver according to claim 3, wherein a paging is possible by transmitting a paging code number instead of a partner station ID number. Low power transceiver. 6. An individual call mode specific low power transceiver having a specific group number, a specific channel group number, and a local station ID number, comprising: mode switching means for switching between a normal mode and an individual call mode. In the mode, when transmitting, a code signal including a specific group number, a transmitting station ID number, and a partner station ID number is transmitted using an empty channel belonging to the specific channel group number. Scan a plurality of specific channels belonging to a channel group number, determine whether the group number and the partner station ID number in the code signal received on the specific channel are the same as the specific group number and the own station ID number,
An individual paging method specific low power transceiver, characterized in that when the determination unit determines that they are the same, it communicates with the individual paging method specific low power transceiver having the transmitting station ID number on the specific channel.