JP4444011B2 - Remote control system - Google Patents

Description

  The present invention relates to a remote control system that connects a plurality of transmitting stations and receiving stations installed in a remote place and controls the apparatus of the transmitting station from the receiving station.

In a conventional VLBI (Very Long Baseline Interferometry) observation system, observation data output from sampler devices installed at a plurality of remote transmission stations is converted into ATM cells by an ATM terminal, and this is used with an optical cable. The data is transmitted to a receiving station by an ATM (Asynchronous Transfer Mode) communication network, and the receiving station converts the data into observation data by an ATM terminal, and inputs the data to a data processing device to perform real-time correlation processing of the observation data ( For example, refer nonpatent literature 1.).
Tatsunobu Takahashi and two other authors, “Wave Summit VLBI Technology”, 1st Edition, Ohm Co., Ltd., June 10, 1997, p4 and p. 112-114

However, in the conventional observation system described above, since it is necessary for a plurality of transmitting stations to perform observation at the same time, the person in charge of the receiving station sets the observation start time to the observer stationed at each transmitting station using a telephone or the like. There is a problem that it is difficult to make the transmitting station unmanned because it is necessary to start observation after notifying each other and confirming the observation start time.
This is particularly supposed to impose a significant burden to the observers of the installed transmission station to the remote islands and remote areas, and the like.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide means for unattended remote transmission stations.

The present invention, in order to solve the above problems, generates a remote control system, a transmitting station connecting device for generating a packet by dividing the continuous data into a plurality, a plurality of ATM cells by dividing the packet And a transmission station provided with a transmission station ATM terminal for restoring ATM cells into packets, a transmission station terminal connected to the transmission station connection device, and restoring the plurality of ATM cells into packets and dividing the packets a receiving station ATM terminal for generating a plurality of ATM cells, and a receiving station connecting device for restoring the packets to the continuous data, the operation instruction for the to the transmitting station connected device while connected to the receiving station connecting device and a provided a receiving station terminal for outputting receiving station, and the receiving station ATM terminal and the transmitting station ATM terminal connected through the ATM network, the transmitting station connecting device, wherein the transmitting station connecting device Operation and instructing the separation unit for separating the packets, and said transmission station connection device combining unit incorporating a plurality of packets a packet writing the response to the receiving station terminal obtained by dividing the continuous data for the operation instruction to the provided with, to the receiving station connecting device, before only set a separating portion for separating the Ki応 answer from the packet, the receiving station terminal, and outputs an operation instruction to the transmitting station connecting device to the receiving station connecting device, the receiving station connecting device, and outputs the operation instruction to the the written receiving station ATM terminal generates and packet, the receiving station ATM terminal, through the ATM network the packets generated a TM cells the transmitted to the transmitting station ATM terminal Te, the transmission station ATM terminal, and outputs it to the transmitting station connecting device to restore the received ATM cells into packets, separating portion of the transmitting station connecting device, it is restored Separating the operation instruction from the packet and outputs it to the transmitting station terminal, said transmitting station terminal, and transfers the operation instruction to the transmitting station connecting device, wherein the transmitting station connecting device, based rather on the operation instruction return the operation result to the transmitting station terminal, said transmitting station terminal, the operation result to the create a response to the receiving station terminal based output to the transmitting station connecting apparatus, the synthesis of the transmitting station connecting device Unit generates a packet in which the response is written and outputs a series of packets in which the packet is incorporated into a plurality of packets obtained by dividing the continuous data to the transmitting station ATM terminal. said series of packets to generate the ATM cell transmitted to the receiving station ATM terminal via the ATM network, the series of packets the receiving station ATM terminal, including the packet received ATM cell Restored and output to the receiving station connecting device, separation unit of the receiving station connecting device separates the response from the restored the packet output to the receiving station terminal, said receiving station terminal, said response Is displayed.

  In this way, the present invention enables the receiving station staff to grasp the status of the remote transmitting station by connecting the transmitting station terminal and the receiving station terminal and enabling transmission and reception of operation instructions and responses. It is possible to instruct operation such as transmission and stop of observation data and the like, and the effect that the transmission station can be unmanned is obtained.

  Embodiments of a remote control system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram illustrating a remote control system according to the first embodiment.
In FIG. 1, reference numeral 1 denotes a sampler device, which is installed at a transmitting station and AD-converts data (referred to as observation data) received from a signal from a radio star or the like by an antenna (not shown) in VSI (VLBI Standard Interface) format. It has a function (continuous data generating means) for generating continuous data such as data (referred to as continuous data).

  Reference numeral 2 denotes a transmission station connection device installed in the transmission station, which receives continuous data output from the sampler device 1 at the data port 3a, divides the continuous data into a plurality of packets, and writes a series of packet numbers and the like. Is generated and output from the output port 3b (packet generation means) and the continuous data divided in the packet based on the packet number is connected from the plurality of packets received from the input port 3c into continuous data. It has a function (continuous data restoring means) such as restoring and outputting from the connection port 3d.

Reference numeral 4 denotes a transmission station connection control unit such as a microprocessor, which controls each unit in the transmission station connection apparatus 2 and functions to form various functional means as hardware by a program having various stored functions. have.
Reference numeral 5 denotes a transmission station ATM terminal installed in the transmission station, which functions such as dividing a packet into a plurality of ATM (Asynchronous Transfer Mode) cells and sending the packet to an ATM communication network 6 using an optical cable (ATM cell generation means) And a function (packet restoration means) such as connecting a plurality of ATM cells received from the ATM communication network 6 and restoring the packets to output them.

The ATM communication network 6 is, for example, OC-48 (Optical Carrier Level 48: transmission rate 2.5 Gbps), and is a communication network capable of transmitting a large amount of data at high speed.
The connection by the ATM communication network 6 is performed by a VC connection or the like with a virtual channel identifier (VCI), and transmission / reception of data between the transmission station and the reception station is performed by independent transmission paths. Yes.

  Reference numeral 7 denotes a transmitting station terminal installed in the transmitting station, and a program having a function (screen sharing means) for sharing the screen by connection with a receiving station terminal 17 described later (for example, X window (Massachusetts Institute of Technology, USA) )), Etc., which are connected to the transmitting station connecting device 2 via a LAN (Local Area Network) and via a transmitting station terminating device 8 such as a modem or a broadband router. Connected to a public network 9 such as an ADSL (Asymmetric Digital Subscriber Line) line, the display unit functions as a display means, the keyboard and mouse function as input means, the LAN and the LAN port 3e of the transmitting station connection device 2 The operation instruction to the transmission station connection control unit 4 is transferred via It functions as an operation instruction transfer means for sending.

The function means such as the packet generation means, the continuous data restoration means, the ATM cell generation means, the packet generation means, the screen sharing means, and the operation instruction transfer means include a program having these functions, a transmission station connection control unit 4, It is executed by hardware formed by the control unit of the apparatus.
The transmission station connection device 2, the transmission station ATM terminal 5, and the transmission station terminal 7 constitute a transmission station system that functions as a continuous data transmission system.

  Reference numeral 12 denotes a receiving station connection device installed in the receiving station, which divides continuous data received at the data port 13a into a plurality of pieces, generates a packet attached with a series of packet numbers, and outputs the packet from the output port 13b. Function (packet generation function) and functions such as connecting the divided continuous data included in the packet based on the packet number from a plurality of packets received from the input port 13c, restoring the continuous data, and outputting from the connection port 13d (Continuous data restoration means). The output continuous data is sent to the data processor 11 for data processing.

Reference numeral 14 denotes a receiving station connection control unit such as a microprocessor, which controls each unit in the receiving station connection device 12 and functions to form various functional means as hardware by a program having various functions stored therein. have.
Reference numeral 15 denotes a receiving station ATM terminal installed in the receiving station, which functions such as dividing a packet into a plurality of ATM cells and sending them to the ATM communication network 6 (ATM cell generating means) and a plurality of received from the ATM communication network 6 A function (packet restoration means) such as connecting the ATM cells to restore them into packets and outputting them is provided.

  Reference numeral 17 denotes a receiving station terminal installed in the receiving station, which is a personal computer or the like in which a program having a function (screen sharing means) for sharing the screen by connection with the transmitting station terminal 7 is incorporated, Connected to the receiving station connecting device 12 via the LAN and connected to the public network 9 via the receiving station terminating device 18 such as a modem or a broadband router, the display unit serving as display means, the keyboard or mouse etc. being input means In addition, it functions as an operation instruction output means for outputting an operation instruction to the transmission station connection control unit 4 via the LAN, the LAN port 13e of the reception station connection device 12, or the reception station termination device 18.

The function means such as the packet generation means, the continuous data restoration means, the ATM cell generation means, the packet generation means, the screen sharing means, and the operation instruction output means include a program having these functions, the receiving station connection control unit 14, It is executed by hardware formed by the control unit of the apparatus.
In addition, a receiving station system that functions as a receiving system for receiving transmission data transmitted from each transmitting station by the receiving station connecting device 12, the receiving station ATM terminal 15, and the receiving station terminal 17 is configured.

The operation of the above configuration will be described.
In this embodiment, the transmitting station is unattended, and a staff member in charge is stationed at the receiving station.
On the screen of the receiving station terminal 17 of the receiving station, a display showing the status of each transmitting station by the screen sharing means, for example, a “start” display indicating that transmission of observation data has started, and transmission of observation data being stopped A “stop” display or the like indicating “the number of packets of data transmitted to the transmission station” or a “transmission packet number” button for performing an operation instruction for confirming the number of data packets is displayed in the display area for each transmission station.

The “start” display and the “stop” display also function as operation instruction buttons for instructing the transmission station to start or stop transmission of observation data.
The person in charge instructs the transmission station to start transmission of observation data, displays "Start" when instructing to stop transmission of observation data, and instructs confirmation of the number of transmitted packets. To do this, select the “number of transmitted packets” button with a mouse or the like and input its operation instruction.

On the other hand, on the screen of the transmitting station terminal 7 of the unmanned transmitting station, the same display as the receiving station terminal 17 by the screen sharing means, for example, “start” display indicating that the transmission of the observation data is started, and the transmission of the observation data are stopped A “stop” display or the like is displayed to indicate that the user is in progress.
The person in charge of the receiving station selects the “start” display of the corresponding transmitting station displayed on the screen of the receiving station terminal 17 with a mouse or the like when starting observation periodically or as necessary. An instruction is input and a transmission start time is input.

Receiving this, the receiving station terminal 17 identifies the transmitting station by the selected “start” display, reads the address of the transmitting station from the stored address table, and describes the input transmission start time A data transmission instruction is generated as an instruction, and the read address is added to the generated data transmission instruction, and the data transmission instruction is transmitted to the public network 9 via the receiving station terminating device 18.
The transmitting station terminating device 8 of the transmitting station recognizes the data transmission instruction addressed to itself by the address attached to the data transmission instruction, receives it, and transfers it to the transmitting station terminal 7.

  The transmission station terminal 7 that has received the transfer of the data transmission instruction outputs the data transmission instruction to the LAN in order to transfer the data transmission instruction to the transmission station connection terminal 2, and the transmission station that has received the data transmission instruction via the LAN port 3e. The connection control unit 4 measures the transmission start time of the data transmission instruction with an accurate clock such as a hydrogen maser atomic clock provided in the transmission station, and when the time arrives, the sampler device 1 input from the data port 3a 2 is divided into a plurality of data, and the packet shown in FIG. 2 is generated and a transmission start notification as an operation result is returned to the transmitting station terminal 7.

  Upon receiving the transmission start notification from the transmission station connection control unit 4, the transmission station terminal 7 displays the “start” display on the screen by changing the display color, etc., and simultaneously changing the display color as a response to the data transmission instruction. Is transmitted to the receiving station terminal 17 as a screen change notice by the screen sharing means formed by the public network 9, and the receiving station terminal 17 displays the “start” display in the display area of the corresponding transmitting station on the screen by the screen change notice. The display station status is simultaneously displayed on the screen of the receiving station terminal 17, for example, by changing the display color. As a result, the person in charge of the receiving station can grasp the status of the transmitting station while staying there.

  As shown in FIG. 2, the packet generated by the transmission station connection control unit 4 of this embodiment includes a header unit 21 for writing a packet number, time information, and the like, and a data unit 22 for writing divided continuous data. , 177,778 packets are generated in order to transmit continuous data for one second, and the packet number 0 to 177,777 is generated in the header portion 21 of each packet. The time (year, month, day, hour, minute, second) at which the continuous data is acquired as time information is written, and the divided continuous data is written in the data portion 22.

In addition, predetermined information such as an IP (Internet Protocol) header or a UDP (User Datagram Protocol) header is written in the other part of the header portion 21.
The packet generated in this way is output from the output port 3 b and sent to the transmitting station ATM terminal 5.

Upon receiving the packet, the transmitting station ATM terminal 5 divides the packet into 48 bytes, divides the packet into 31 ATM cells with a 5-byte cell header, and sends them to the ATM communication network 6.
At this time, “0000” is written in the cell header of the first 30 ATM cells, and “0001” is written in the cell header of the 31st, that is, the last ATM cell. Identified.

The transmission data for one second sent in this way is {48 (header part 21) +1440 (data part 22) +5 (cell header) x31 (number of ATM cells)} x177778 (packet number) x8 = 2.337 Gbps. Therefore, for example, a bandwidth of OC-48 (2.5 Gbps) can be secured.
In the receiving station, the receiving station ATM terminal 15 receives a packet divided into ATM cells from the ATM communication network 6, recognizes a series of ATM cells by the cell header, and connects them to restore the packet to the receiving station. Output to the connection device 12.

The receiving station connection control unit 14 recognizes a packet for one second based on time information of a plurality of packets received from the input port 13c, and the divided continuous data included in the packet by the packet number of the recognized packet for one second. Are connected to each other, restored to continuous data, and output from the connection port 13d to the data processing device 11.
In this way, the observation data acquired by the unmanned transmitting station is processed by the data processing device 11 of the receiving station.

When the person in charge of the receiving station needs to confirm the number of observation data packets that have been transmitted or transmitted, the “transmission packet number” button of the corresponding transmitting station displayed on the receiving station terminal 17 is mouse-clicked. The operation instruction is input by selecting with, for example.
This operation instruction is transmitted to the transmitting station terminal 7 via the public network 9 in the same manner as described above, and the transmitting station terminal 7 transfers this to the transmitting station connection control unit 4 and transmits a packet of observation data already transmitted or being transmitted. In response to the number of responses, this is displayed on the screen and a response to the operation instruction is transmitted to the receiving station terminal 17 by the screen sharing means, and the receiving station terminal 17 simultaneously displays the response in the display area of the corresponding transmitting station. .

In addition, when stopping the transmission of the observation data being sent by the person in charge, select the “stop” display of the corresponding transmitting station displayed on the receiving station terminal with a mouse or the like and input the operation instruction. .
This operation instruction is transmitted to the transmitting station terminal 7 through the public network 9 in the same manner as described above, and when a notification of stop is returned from the transmitting station connection control unit 4, the transmitting station terminal 7 The display color of the “stop” display on the screen is changed, and this is transmitted to the receiving station terminal 17 as a response by the screen sharing means as described above, and the receiving station terminal 17 displays the response simultaneously.

As described above, the remote control of the transmitting station is performed by the receiving station of this embodiment.
As described above, in this embodiment, a transmitting station terminal and a receiving station terminal are provided, and these terminals are connected via a public network so that operation instructions and responses can be sent and received. It is possible to grasp the status of the remote transmitting station and to send operation data such as observation data and to stop operation, and to make the transmitting station unattended.

  In this embodiment, the public network is described as an ADSL line. However, when this embodiment is applied to a remote control system that does not require simultaneity, an Internet line using a telephone line may be used. Communication connection in this case is performed by the telephone number of the other party.

FIG. 3 is a block diagram illustrating the remote control system according to the second embodiment.
In addition, the same part as the said Example 1 attaches | subjects the same code | symbol, and abbreviate | omits the description.
In FIG. 3, reference numeral 31 a denotes a combining unit provided in the transmission station connection apparatus 2, and the transmission station connection apparatus 2 divides continuous data output from the sampler apparatus 1 received by the data port 3 a into packets. In addition to the same function as the packet generation means by the transmission station connection control unit 4, the transmission station connection control unit 4 writes an operation instruction and response to the reception station received from the transmission station terminal 7 via the LAN in a specific packet. And has a function of incorporating into a series of packets (such as a response incorporating means).

  32a is a separation unit provided in the transmission station connection apparatus 2, and the transmission station connection control unit 4 of the first embodiment restores the packets received from the input port 3c by the transmission station connection apparatus 2 into continuous continuous data. In addition to the same function as the restoring means, the function of separating the operation instruction and response from the receiving station written in the specific packet and outputting it to the transmitting station terminal 7 via the LAN (operation instruction output means) )have.

  Reference numeral 31b denotes a combining unit provided in the receiving station connection device 12, and packet generation means by the receiving station connection control unit 14 of the first embodiment for dividing the continuous data received by the receiving station connection device 12 at the data port 13a into packets. In addition to the same function, the reception station connection control unit 14 writes an operation instruction and response to the transmission station received from the reception station terminal 17 via the LAN into a specific packet and incorporates it into a series of packets (operation Incorporating means such as instructions).

  Reference numeral 32b denotes a separation unit provided in the receiving station connection device 12, and the receiving station connection control unit 14 of the first embodiment restores the packets received by the receiving station connection device 12 from the input port 13c into continuous continuous data. In addition to the function similar to the restoration means, the function of separating the operation instruction and response from the transmission station written in the specific packet and outputting to the receiving station terminal 17 via the LAN (response output means) have.

The transmitting station terminal 7 and the receiving station terminal 17 of the present embodiment incorporate screen sharing means as in the first embodiment, and the simultaneous display function thereof is the above-described combining units 31a and 31b and separating units 32a and 32b. These functions are executed via the ATM communication network 6.
The operation of the above configuration will be described.
The display contents of the transmitting station terminal 7 and the receiving station terminal 17 in the present embodiment are the same as those in the first embodiment.

  In addition, a series of packets generated when the combining unit 31a of the transmitting station connection apparatus 2 of the present embodiment transmits continuous data is received in the data unit 22 of a specific packet, for example, the first packet (packet with packet number 0). A packet for writing an operation instruction or a response to the packet is added, and 177,778 series generated by the packet generation means of the transmission station connection control unit 4 of the first embodiment are added to the subsequent packets with packet numbers 1 to 177,778. Packets in which the same contents as those of the packets are written are continued, and a total of 177,779 packets are generated. Even if one packet is added in this way, only 13 Kbps is added to the transmission data transmitted from the transmission station ATM terminal 5, so that the bandwidth of the ATM communication network 6 can be secured.

  When the person in charge of the receiving station selects the “start” display of the receiving station terminal 17 in the same manner as in the first embodiment, inputs its operation instruction, and inputs the transmission start time and the like, the receiving station terminal 17 that has recognized this, The transmitting station is identified by the selected “start” display, a data transmission instruction indicating the transmission start time is created, and the specified transmitting station name is attached to the created data transmission instruction, and the receiving station is connected via the LAN. Output to the control unit 14.

The receiving station connection control unit 14 that has received this data transmission instruction transfers it to the combining unit 31b. The combining unit 31b generates a packet in which the packet number is set to 0 and the data transmission instruction transferred to the data unit 22 is written. Then, the data is sent to the receiving station ATM terminal 15 through the output port 13b.
The receiving station ATM terminal 15 that has received the packet divides the packet into ATM cells in the same manner as the transmitting station ATM terminal 5 in the first embodiment, and performs ATM communication to the transmitting station with the transmitting station name attached to the data transmission instruction. It is sent to the transmission path of the network 6.

In the transmitting station, the transmitting station ATM terminal 5 restores a plurality of ATM cells received from the ATM communication network 6 to the transmitting station connecting apparatus 2 in the same manner as the receiving station ATM terminal 15 of the first embodiment.
In the transmission station connection device 2, the packet received from the input port 3c is sent to the separation unit 32a. The separation unit 32a separates the data transmission instruction of the packet and outputs it to the transmission station connection control unit 4, and the transmission station connection control unit 4 Transfers this to the transmitting station terminal 7.

The transmission station terminal 7 that has received the transfer of the data transmission instruction transfers the data transmission instruction to the transmission station connection control unit 4 in the same manner as in the first embodiment, and the transmission station connection control unit 4 that has received this transmits the transmission start time. When it arrives, it generates a packet from the continuous data and returns a transmission start notification to the transmitting station terminal 7.
Upon receiving this reply, the transmitting station terminal 7 displays the “start” display on the screen by changing the display color, etc., as in the first embodiment, and simultaneously sends a screen change notification as a response to the transmitting station connection control unit 4. The transmission station connection control unit 4 outputs this to the combining unit 31a.

Receiving the transfer of the screen change notification, the compositing unit 31a writes the screen change notification transferred to the data portion 22 of the first packet, that is, the packet with the packet number 0, and then the same as the packet generation unit of the first embodiment. Then, a series of packets are generated by continuing the packets in which the divided continuous data and the like are written, and output to the transmitting station ATM terminal 5 from the output port 3b.
Upon receiving the packet, the transmitting station ATM terminal 5 divides the packet into a plurality of ATM cells and sends it to the ATM communication network 6 as in the first embodiment.

In the receiving station, the receiving station ATM terminal 15 restores a series of ATM cells into packets in the same manner as in the first embodiment, and outputs the packets to the receiving station connecting apparatus 12.
In the receiving station connection device 12, a plurality of packets received from the input port 13c are sent to the separating unit 32b, and the separating unit 32b separates the screen change notification from the packet with the packet number 0 and outputs it to the receiving station connection control unit 14. The receiving station connection control unit 14 transfers this to the receiving station terminal 17.

The receiving station terminal 17 that has received the screen change notification displays a change in display color or the like on the “start” display in the display area of the corresponding transmitting station on the screen.
Thereby, a screen sharing means is formed by the ATM communication network 6, the display of the transmitting station terminal 7 is displayed on the receiving station terminal 17 at the same time, and the person in charge of the receiving station can be present and grasp the situation of the transmitting station. It becomes possible.

In parallel with the above, the separation unit 32b restores the received packets after the packet number 1 in the same manner as the continuous data restoring unit of the first embodiment to continuous continuous data, and outputs it to the data processing device 11 from the connection port 13d. .
In this way, the observation data acquired by the unmanned transmitting station is processed by the data processing device 11 of the receiving station.

  When the person in charge of the receiving station needs to confirm the number of packets of transmission data or when transmission of observation data is stopped, an operation instruction input in the same manner as described above is transmitted via the ATM communication network 6. The transmission station terminal 7 transmits a response such as the number of packets displayed on the screen or the display change of the “stop” display to the reception station terminal 17 by the screen sharing means to the display area of the corresponding transmission station. Display at the same time.

As described above, the remote control of the transmitting station is performed by the receiving station of this embodiment.
As described above, in the present embodiment, the same effect as in the first embodiment can be obtained by connecting the transmitting station terminal and the receiving station terminal via the ATM communication network and enabling the transmission and reception of each other's commands and responses. be able to.

FIG. 4 is a block diagram illustrating a remote control system according to the third embodiment.
In addition, the same part as the said Example 1 attaches | subjects the same code | symbol, and abbreviate | omits the description.
In FIG. 4, 35a is an instruction transmission / reception unit, which is an interface board for data transmission / reception between the transmission station terminal 7 and the transmission station ATM terminal 5 mounted on the transmission station terminal 7, for example, OC-3NIC. (Optical Carrier Level 3 Network Interface Card).

An instruction transmission / reception unit 35 b is an interface board similar to the instruction transmission / reception unit 35 a mounted on the transmission station terminal 7, and is mounted on the reception station terminal 17.
The transmitting station terminal 7 and the receiving station terminal 17 of the present embodiment incorporate screen sharing means as in the first embodiment, and the simultaneous display function is provided by the transmitting station ATM terminal 5 and the receiving station ATM terminal 15 by the ATM. It is executed via the communication network 6.

In addition to the function of the first embodiment, the receiving station ATM terminal 15 of the present embodiment has a function of writing an operation instruction to the transmitting station connection device and an identifier B for identifying the transmitting station terminal in the ATM cell ( (Operation instruction writing means) and a function (response separation means) for separating a response to an operation instruction sent from the transmitting station terminal and outputting it to the receiving station terminal.
In addition to the function of the first embodiment, the transmitting station ATM terminal 5 has a function of writing a response to an operation instruction from the receiving station terminal 17 and an identifier D for identifying the receiving station terminal 17 in the ATM cell. (Response writing means) and a function (operation instruction separating means) for separating operation instructions sent from the receiving station terminal 17 are added.

The operation of the above configuration will be described.
The display contents of the transmitting station terminal 7 and the receiving station terminal 17 in the present embodiment are the same as those in the first embodiment.
When the person in charge of the receiving station selects the “start” display of the receiving station terminal 17 in the same manner as in the first embodiment, inputs its operation instruction, and inputs the transmission start time and the like, the receiving station terminal 17 that has recognized this, The transmission station is identified by the selected “start” display, a data transmission instruction describing the transmission start time is created, the identified transmission station name is attached to the created data transmission instruction, and the instruction transmission / reception unit 35b is used. The data is output to the receiving station ATM terminal 15.

The receiving station ATM terminal 15 that has received this data transmission instruction generates an ATM cell in which the data transmission instruction is written, writes the identifier B of the transmitting station terminal 7 in the ATM cell, and is attached to the data transmission instruction. The data is sent to the transmission path of the ATM communication network 6 to the transmitting station having the transmitting station name. The identifier A is written in the ATM cell output to the transmitting station connection device 2.
In the transmitting station, the transmitting station ATM terminal 5 receives the ATM cell from the ATM communication network 6, recognizes the output destination as the transmitting station terminal 7 by the identifier B written in the ATM cell, and issues a data transmission instruction. Separated and transferred to the transmitting station terminal 7.

The transmission station terminal 7 that has received the data transmission instruction by the instruction transmission / reception unit 35a transfers the data transmission instruction to the transmission station connection control unit 4 in the same manner as in the first embodiment, and the transmission station connection control unit 4 that has received this transmits the data transmission instruction. When the start time arrives, a packet is generated from the continuous data and output from the output port 3b to the transmission station ATM terminal 5 and a transmission start notification is returned to the transmission station terminal 7.
Upon receiving this return, the transmitting station terminal 7 displays the “start” display on the screen by changing the display color, etc., as in the first embodiment, and simultaneously sends a screen change notification as a response via the instruction transmitting / receiving unit 35a. Output to the transmitting station ATM terminal 5.

  Upon receiving the packet from the transmission station connection device 2 and the screen change notification from the transmission station terminal 7, the transmission station ATM terminal 5 converts the packet from the transmission station connection device 2 into a plurality of ATM cells in the same manner as in the first embodiment. The identifier C of the receiving station connection device 12 is written in these ATM cells, and the identifier D of the receiving station terminal 17 is written in the ATM cell in which the screen change notification from the transmitting station terminal 7 is written. Send to 6.

  The receiving station recognizes the output destination as the receiving station terminal 17 based on the identifier D written in the ATM cell received by the receiving station ATM terminal 15, separates the screen change notification, and outputs it to the receiving station terminal 17. At the same time, the output destination is recognized as the receiving station connecting device 12 by the identifier C written in the ATM cell, and a series of ATM cells are restored to packets and output to the receiving station connecting device 12 as in the first embodiment. .

Receiving the screen change notification, the receiving station terminal 17 displays a display color change or the like on the “start” display in the display area of the transmission station of the transmission destination of the screen.
Thereby, screen sharing means by the ATM communication network 6 is formed by using the transmitting station ATM terminal 5 and the receiving station ATM terminal 15, and the display of the transmitting station terminal 7 is simultaneously displayed on the receiving station terminal 17, and the staff in charge of the receiving station It becomes possible to grasp the situation of the transmitting station while staying.

Further, the receiving station connection device 12 restores the packet to continuous continuous data in the same manner as in the first embodiment, and sends it to the data processing device 11 from the connection port 13d.
In this way, the observation data acquired by the unmanned transmitting station is processed by the data processing device 11 of the receiving station.
When the person in charge at the receiving station needs to confirm the number of packets of transmission data or when the transmission of observation data is stopped, an operation instruction input in the same manner as described above is received at the receiving station ATM terminal 15, ATM communication. The transmission station terminal 7 transmits a response such as the number of packets displayed on the screen or a display change of the “stop” display to the receiving station terminal 17 by the screen sharing means. To display simultaneously in the display area of the corresponding transmitting station.

As described above, the remote control of the transmitting station is performed by the receiving station of this embodiment.
As described above, in this embodiment, the transmitting station ATM terminal, the receiving station ATM terminal, and the ATM communication network connect the transmitting station terminal and the receiving station terminal to enable mutual transmission and reception of commands and responses. The same effect as in the first embodiment can be obtained.

1 is a block diagram illustrating a remote control system according to a first embodiment. Explanatory drawing which shows the packet structure of Example 1. FIG. The block diagram which shows the remote control system of Example 2 The block diagram which shows the remote control system of Example 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sampler apparatus 2 Transmission station connection apparatus 3a, 13a Data port 3b, 13b Output port 3c, 13c Input port 3d, 13d Connection port 3e, 13e LAN port 4 Transmission station connection control part 5 Transmission station ATM terminal 6 ATM communication network 7 Transmission Station terminal 8 Transmitting station terminating device 9 Public network 11 Data processing device 12 Receiving station connecting device 14 Receiving station connection control unit 15 Receiving station ATM terminal 17 Receiving station terminal 18 Receiving station terminating device 21 Header unit 22 Data unit 31a, 31b Combining unit 32a, 32b Separating part 35a, 35b Instruction sending / receiving part

Claims (1)

And transmitting station connecting device for generating a packet by dividing the continuous data into a plurality of transmission stations ATM terminal to restore the ATM cells into packets with by dividing the packet to generate a plurality of ATM cells, the transmitter A transmission station provided with a transmission station terminal connected to the station connection device;
A receiving station ATM terminal for generating a plurality of ATM cells by dividing the packet with restoring said plurality of ATM cells into packets, and the receiving station connecting device which restores packets to the continuous data, the receiving station A receiving station provided with a receiving station terminal for connecting to a connecting device and outputting an operation instruction to the transmitting station connecting device;
Connecting the transmitting station ATM terminal and the receiving station ATM terminal via an ATM communication network;
In the transmitting station connecting apparatus, a separating unit that separates an operation instruction to the transmitting station connecting apparatus from a packet, and a packet in which a response to the receiving station terminal in response to the operation instruction to the transmitting station connecting apparatus is written provided with a combining unit incorporating a plurality of packets obtained by dividing the data, to the receiving station connecting device, setting a separation unit for separating the pre Ki応 answer from the packet,
The receiving station terminal, and outputs an operation instruction to the transmitting station connecting device to the receiving station connecting device,
The receiving station connecting device generates and outputs the written the operation instruction packet to the receiving station ATM terminal,
The receiving station ATM terminal generates the packet into an ATM cell and transmits the packet to the transmitting station ATM terminal via the ATM communication network,
The transmitting station ATM terminal restores the received ATM cell into a packet and outputs the packet to the transmitting station connection device ,
The separation unit of the transmission station connection device separates the operation instruction from the restored packet and outputs the operation instruction to the transmission station terminal,
It said transmitting station terminal, and transfers the operation instruction to the transmitting station connecting device,
Said transmitting station connecting apparatus, and returns a based driving operation result to the transmitting station terminal to the operation instruction,
The transmitting station terminal creates a response to the receiving station terminal based on the operation result and outputs the response to the transmitting station connection device,
The combining portion of the transmitting station connecting device, and outputs a series of packets incorporating the packet to generate a written said response packet to a plurality of packets obtained by dividing the continuous data to said transmitting station ATM terminal,
The transmitting station ATM terminal generates the series of packets into an ATM cell and transmits it to the receiving station ATM terminal via the ATM communication network,
The receiving station ATM terminal restores the received ATM cell to the series of packets including the packet, and outputs it to the receiving station connection device ,
The separation unit of the receiving station connection device separates the response from the restored packet and outputs the response to the receiving station terminal,
The remote control system , wherein the receiving station terminal displays the response.

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