SU1689963A1 - Communication device of annular fiber-optics net - Google Patents

Abstract

The invention relates to distributed data acquisition systems, instrumentation and computing systems with radial, ring and backbone communication systems based on parallel and serial channels with a byte message structure, as well as serial computer systems using optical fibers. The aim of the invention is to increase the speed and efficiency of operation by dividing the transmitted frames into data and commands transmitted with their own characteristic network commands. The goal is achieved in that the device contains a polling and status recording block 1, a network addressing node 2, a network command decoder 3, a buffer receiving register 4. a network arbitration node 5, a network communication control block 6, a command and data state node 7 , network signal converter 8, system code decoder 9, system trunk transceiver node 10, system communication control node 11, network signal relay unit 12, encoding block 13 - information conversion, buffer transmitting register 14. b approx 15 information input unit 16 outputs the information, the switch 17, a system line 18. 1-yl. v Ё

Description

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00 Yu Yu

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The invention relates to distribution systems for data collection, instrumentation and computing systems with radial, ring and trunk communication systems based on parallel and serial channels with a byte message structure, as well as serial computer systems for LEDs.

The purpose of the invention is to increase the speed and efficiency of work by dividing the transmitted frames into data and commands transmitted with their characteristic network commands.

The drawing shows a communication device for a ring fiber network,

The device comprises a polling / recording state block 1, a network addressing node 2, a network command decoder 3, a buffer receiving register 4, a network arbitration node 5, a network communication control block 6, a command and data state node 7, a network signal converter 8, the decoder 9 system commands, node 10 of the system trunk receivers, node 1 i of the system communication control, network signal relay unit 12, information conversion-coding unit 13, buffer transmission register 14, information input block 115, output block 16 information tion, switch 17, system trunk 18.

The device works as follows.

The processor writes to the node 7 the command and data status code of the address of its station, translates to the appropriate state the channel ready mask trigger, the access permission trigger and the channel type control trigger included in this node. For this, the outputs of the system trunk command are received at the outputs of the decoder 9 system commands, the output of which is fed to the input of the channel status recording of node 5 of the network arbifage. If the processor requires data to be transferred to the network, it simultaneously sets 1 to the trigger to require access to the network arbitration node. The processor then waits for access permission from the network. The last processor to complete the transfer, or a dedicated network control center, transmits an access permission frame. Therefore, the output of the network command decoder arrives at the input of the installation of the access permission trigger of the network addressing node when there is a demand at the input of the network addressing node coming from the output of the trigger to require network arbitration access. In case of installation of the trigger

resolution of the network addressing node, the output of the network addressing node is fed to the input of the polling and status recording unit and to the inputs of the network communication control block, the outputs

which are received at the inputs of the network signal relay unit, prohibiting data relay on the ring highway. When read by a command from the processor, the output of the decoder 9 system commands is input to the polling unit 1 and the status recording, and when access is enabled, the data transfer to the ring highway begins. The processor transmits a control frame, then data frames. In the first control frame, the number of the receiving station is transmitted. At the same time, the output of the system command decoder enters the input of the system communication control node, the output of which enters the input of the transceiver node of the system trunk, the input-output of which is respectively fed to the inputs of the network signal recording unit, the output of which enters the input of the buffer transmit register. At the same time

A write signal is generated at the input of this register for all commands to write commands or data to the channel while simultaneously generating the characteristics of network commands by sub-address code. Buffer Transmit Output

register 14 is fed to the input of the output unit 16 of information, the output of which is fed to the electronic connector and then to the radio frequency cable of the next segment of the ring highway. Signals from the cable

arrive at the input connector of the radio frequency cable and then to the input of the information input unit, then to the output of the register 4 according to the clock signals and with the corresponding mode at the inputs of the register 4, the incoming

from the output of the converter 8.

Through the switch, information is fed to the input of the network signal converter, from the output of which is fed to the input of the buffer receiving register 4.

The output of the buffer receiving register 4 is fed to the inputs of the network communication control unit. Simultaneously, from the output of the buffer transmitting register, the network command code is fed to the input of the decoder

etev teams. The output of the command frame from the decoder 9 is fed to the input of the setup readiness trigger for the command frame of the network arbitration node and to the input of the network communication control unit, the station’s address code from the output of the network arbitration node to the other input, the input-output of which receives information when comparing address of the station number, from the output of the network communication control unit. AT

if the addresses match, the output signal

the network communication control unit is fed to the input of the network signal relay unit to block the relay. At the same time, the signal from the output of the addressing trigger of the network addressing node is fed to the inputs of the triggers of the polling and recording units. The receiving processor checks the status of the command and data state node with the interrupt signal, and the output of the system command decoder is fed to the input of the polling and status recording unit. When the command frame is ready, the receiver reads the command data, and the output of the system command decoder is fed to the input of the system control node and the input of blocks whose output is fed to the input of the transceiver node of the system trunk to open the receive data path.

Data transfer is similar. But at different subaddresss, various network commands are formed that pass to the network command decoder, the outputs of which go to the corresponding nodes of the station. When receiving a command to confirm reception of data, the output of the decoder enters the input of the installation of the channel readiness trigger of the network addressing node. In each device in the ring having an access requirement, the signals are combined on the internal trunk and eventually, in the frame of the transmitted data, there will be units in the bits corresponding to the requesting stations for one network polling command from the central arbiter or any network station for direct, th subsequent transfer of control using a command frame.

The output of the network command decoder is fed to the input of the network communication control unit. The number of network commands is determined by the number of sub-addresses allocated in the transmitting part. The considered basic network commands can easily be extended in a similar way. The outputs of the decoder system commands are grouped by the corresponding subaddress allocated for operation with the communication channel. If the addressing node of the network addressing node is set up or the access control of the relay is allowed to be blocked. Otherwise, the received data and network commands are retransmitted from the input of the retransmission unit of network signals, which arrive at the inputs of the internal trunk and then to the buffer transmit register.

The operation of a quantum communication channel in a local ring network is completely identical to that considered for radio frequency

cable channel operating at the same frequencies.

Claims (1)

The invention of a circular fiber optic communication device comprising a system instruction decoder, a polling and status recording unit, a system trunk transceiver node, a network addressing node, a command and data status node, a buffer 3 receiving register, a network signal converter, a buffer transmit register, block coding-transformation of information, characterized in that, in order to increase speed and efficiency 5 of the work efficiency due to the division of the transmitted frames into data and commands transmitted with their characteristic network commands, the network decoder, network arbitration node, block were entered into 0 network communication control unit, network signal relay unit, system communication control node, network signal switch, information input unit and information output unit, the first inputs 5 outputs of the polling and recording state are information inputs / outputs of the device, the second inputs - the outputs of the polling and status recording units are connected to the inputs / outputs of the network addressing node, 0 whose output is connected to the output of the network command decoder, the input of which is connected to the first output of the buffer receiving register, the second output of which is connected to the input of the control network control unit 5, the installation input of which is connected to the output of the network command decoder, the first input output of which connected to the first input-output node of the network arbitration, the second input-output of which 0 is connected to the third input-output of the polling and status recording unit, the fourth input-output of which is connected to the first input-output of the command and data state node. the second input-output of which is connected to 5 with the second input-output of the network communication control unit and with the first input of the switch, the first output of which is connected to the input of the network command converter. the output of which is connected to the input of the buffer receiving register, the input of the device commands is connected to the input of the system command decoder, the first output of which is connected to the control input of the interrogation and status recording unit, the second output 5 of the system command encoder is connected to the input of the system communication control node , the first output of which is connected to the control input of the transceiver node of the system trunk, the first input-output of which is connected to the information the input-output of the network signal relay unit, the control input of which is connected to the first output of the system communication control node, the second output of which is connected to the control input of the system trunk transceiver node, the third output of the system communication control node is connected to the network control control input, the output of which is connected to the control input of the retransmission unit, the output of which is connected to the input of the buffer0 A transmit register, the output of which is connected to the input of the coding and conversion unit, the output of which is connected to the second input of the switch, the third input of which is connected to the output of the information input unit, the second output of the switch is connected to the input of the information output unit, the output of which is the information output of the device The input of the input block is the information input of the device.