JP2621959B2 - Call system - Google Patents

Description

The present invention is suitably implemented between so-called multi-channel access (abbreviated as MCA) wireless devices used in a transportation business such as a home delivery business and a transportation business. Related to the call system.

2. Description of the Related Art In the transportation industry, identification data corresponding to a vehicle number or the like is assigned in advance to each wireless device mounted on a plurality of vehicles. Each wireless device is divided into one or a plurality of groups, for example, in units such as a business office to which the vehicle belongs, and each group has a supervisory vehicle that supervises the group.

In a typical prior art, each radio transmits the identification data of a desired communication partner to make a call, and when a response is received, the radio that performed the evening and one corresponding to the identification data are transmitted. Alternatively, the communication is performed only with a plurality of wireless devices.

Problems to be Solved by the Invention The supervisory vehicle needs to intercept at least the content of the call of the subordinate vehicle in order to grasp the movement of the subordinate vehicle in the same group. However, in the prior art as described above, since the individual call is performed only between the radio that made the call and the radio that responded to the call,
The supervisory vehicle cannot accurately grasp the content of the call of the dependent vehicle. Also, when it is necessary to report the contents of a call to a supervisory vehicle having a vehicle with a higher priority than the vehicle that made the call, the dependent vehicle needs to report the details of the call back to the supervisory vehicle, which is inferior in operability.

SUMMARY OF THE INVENTION It is an object of the present invention to enable a specific radio in a group to which a radio belongs when a radio starts a call to at least intercept the content of the call.
It is an object of the present invention to provide a call system with improved operability as well as being able to grasp the contents of calls of the radio devices of the entire group.

Means for Solving the Problems According to the present invention, in a communication system between a plurality of wireless devices, each wireless device is divided into one or a plurality of groups, and each wireless device has group identification data for each group to which the wireless device belongs, Mutual identification data for mutual identification within the group is assigned, and when the specific wireless device of each group detects that at least one wireless device of the call belongs to the own group using the group identification data, , At least the user listens to the call.

According to the present invention, a plurality of radios are divided into one or more groups, and each radio is provided with group identification data for each group to which the radio belongs and mutual identification for mutual identification within the group. Identification data is assigned. A specific wireless device provided for each group is detected based on the group identification data that at least one other wireless device in the group to which the specific wireless device belongs is at least one side of a call. Sometimes, the particular radio can at least listen to the call.

Therefore, even when the specific radio is not participating in the call, the specific radio can communicate with the remaining radios in the own group, as well as the radios in the other groups. The user can also listen to the contents of the call with the user, and can accurately grasp the contents of the call of the radios of the entire group. From the remaining radios that made the call, the call to the specific radio can be made. There is no need to report the contents, and operability can be improved.

Embodiment FIG. 1 is a system diagram for explaining a communication system according to an embodiment of the present invention. For example, a plurality of mobile stations 101 to 105; 201 to 204; 301 to 305, such as tracks, are divided into groups G1 to G3 in units of belonging business offices and the like. Also each group
In G1 to G3, a supervisory vehicle for supervising the groups G1 to G3, for example, mobile stations 101, 201, and 301 is selected.

When a certain group is, for example, G1, a mobile station 101 which is a supervisory vehicle is subordinate to mobile stations 102 to 105 in its own group G1.
And the mobile stations 201 to 204 and 301 to 305 of the other groups G2 and G3 can be individually communicated. On the other hand, when a mobile station subordinate to the mobile station 101, for example, 102 makes a call, the own group G1
When making a call with other mobile stations 103 to 105 in the
101 can also join this call. Also this mobile station 1
When 02 makes a call with the mobile stations 201 to 204; 301 to 305 of the other groups G2 and G3, the mobile station 101 can also join the call.

FIG. 2 is a block diagram showing an electric configuration of the wireless device 1 mounted on the mobile stations 101, 201, and 301 which are supervised vehicles. The data and the voice signal received by the antenna 2 are provided to the demodulator 3. The audio signal demodulated by the demodulator 3 is provided to a speaker 4 via a switch SW1 and is converted into an acoustic signal. The data demodulated by the demodulator 3 is supplied to a processing circuit 5 realized by, for example, a microcomputer or the like via a line l1.

In connection with the processing circuit 5, a vehicle number setting means 6 and a memory 7 are provided. The vehicle number setting means 6 is realized by a 10-bit dip switch, for example, and sets a vehicle number on which the wireless device 1 is mounted, for example, a number corresponding to "101". The memory 7 stores the group to which the wireless device 1 belongs, the vehicle numbers “102” to “1” of the subordinate mobile stations 102 to 105 in G1.
05 "is stored. When the vehicle number of the own vehicle set by the vehicle number setting means 6 can be written in the memory 7,
The vehicle number setting means 6 may be omitted. The processing circuit 5 is also connected with a press-to-talk switch 10 for switching between transmitting and receiving operations.

The audio signal from the microphone 8 is provided to the modulator 9 via the switch SW2. Modulator 9 also has a line
Data such as a car number is given via l2. Modulator 9
The voice signal and data modulated by
Sent from The processing circuit 5 is a local station, for example, a mobile station.
When the remaining mobile stations 102 to 105 in the group G1 to which the mobile station 101 belongs, as well as when the 101 performs a call, also when the operator presses the press-talk switch 10 of the operator, The switches SW1 and SW2 are selectively turned on / off.

The radio equipment 1a mounted on the mobile stations 102 to 105; 202 to 204; and 302 to 305, which are subordinate to the mobile stations 101, 201, and 301, respectively, is configured in the same manner as the radio equipment 1 and changes the vehicle number of the vehicle. A vehicle number setting means 6 for setting is provided, and the memory 7 may be omitted.

FIG. 3 is a diagram showing the format of data D transmitted to the other party prior to the call when each of the mobile stations 101 to 105; 201 to 204; 301 to 305 desires a call. This data D
Are bit synchronization data D1 and frame synchronization data D2 for obtaining synchronization at the time of data reading by the processing circuit 5,
It is composed of call destination vehicle number data D3 and caller's own vehicle number data D4. The call destination vehicle number data D3 and the own vehicle number data D4 have functions as group identification data indicating a group to which they belong and mutual identification data for mutual identification within the group.

In the radio 1 of the mobile station 101, 201, 301 which is the supervisory vehicle, the processing circuit 5 reads the data D received via the line l1, and converts the destination vehicle number data D3 of the data D and the own vehicle number data D4. The data is compared with the vehicle number data in the memory 7, and when the mobile station in the own group is talking, the switches SW1 and SW are operated in response to the operation of the press talk switch 10.
2 can be controlled to be conductive / blocked and can participate in the call. At this time, only the switch SW1 may be turned on, and only the content of the call may be intercepted.

FIG. 4 is a flowchart for explaining the operation of the mobile stations 101, 201, and 301 as supervisory vehicles. In step n1, the standby state is established, and when data D is received in step n2, in step n3, an individual call to the own station is requested based on the called vehicle number data D3 of the received data D. Is determined. When an individual call to the own station is requested in step n3, the process proceeds to step n4, and in response to the press operation of the press-talk switch 10, the switches SW1 and SW2 are selectively controlled to be turned on / off, and the call is switched to the call-enabled state. Return to n1.

In step n3, when the individual call to the own station is not requested, the process proceeds to step n5, and it is determined whether or not the calling mobile station belongs to the own group based on the own vehicle number data D4 indicating the calling source. If so, the process proceeds to step n4 to enable the call, and if not, the process proceeds to step n6.

At step n6, it is determined whether or not the called mobile station belongs to the own group based on the called vehicle number data D3, and if so, the process proceeds to step n4 to make a call available state to step n1. If not, the process returns to step n1 as a call disabled state where it is not possible to participate in the call in step n7.

Thus, in the call system according to the present invention, the mobile stations 101, 201, and 301, which are supervised vehicles, are subordinate mobile stations 102 to 105 in their own group; 202 to 204; 302 to 305 are other mobile stations in their own group, Alternatively, when making a call with a mobile station in another group, at least the call can be intercepted, so that the contents of the call of the subordinate station can be accurately grasped and the subordinate station can be supervised. When the subordinate station makes a call, the content of the call is automatically intercepted by the supervising mobile stations 101, 201, 301, so there is no need to report the content of the call, and thus the operability is improved. Can be significantly improved.

As described above, according to the present invention, a plurality of wireless devices are divided into one or a plurality of groups, a specific wireless device is provided for each group, and a specific wireless device in a group to which the specific wireless device belongs is provided. When it is detected that the other radio is at least on one side of the call, the specific radio can at least listen to the content of the call, so that the specific radio is Even when the radio itself does not participate in the call, it is possible to listen not only to the call between the remaining radios in the own group but also to the contents of the call between the remaining radio and the radio in the other group. It is possible to accurately grasp the call contents of the radios of the entire group, and it is not necessary to report the call contents from the remaining radios that made the call to the specific radio, improving operability. can do.

[Brief description of the drawings]

FIG. 1 is a system diagram for explaining a communication system according to an embodiment of the present invention. FIG. 2 is a block diagram showing an electric configuration of a radio 1 mounted on mobile stations 101, 201, 301 which are supervised vehicles.
The figure shows the format of data D transmitted to the other party, and FIG. 4 is a flowchart for explaining the operation of mobile stations 101, 201, 301. 1 ... radio, 3 ... demodulator, 4 ... speaker, 5 ...
Processing circuit 6, vehicle number setting means 7, memory 8,
Microphone, 9 Modulator, 101-105; 201-204; 301
~ 305 ... mobile station, G1 ~ G3 ... group

Claims (1)

(57) [Claims] In a communication system between a plurality of radios, each radio is divided into one or a plurality of groups, and each radio has group identification data for each group to which the radio belongs, and mutual identification within the group. Mutual identification data for each group, and the specific radio for each group listens to at least the call when it detects that at least one of the radios of the call belongs to the own group using the group identification data. A telephone call method characterized in that the call is made.