JPS6461144A - Data highway equipment - Google Patents

Data highway equipment

Info

Publication number
JPS6461144A
JPS6461144A JP62218619A JP21861987A JPS6461144A JP S6461144 A JPS6461144 A JP S6461144A JP 62218619 A JP62218619 A JP 62218619A JP 21861987 A JP21861987 A JP 21861987A JP S6461144 A JPS6461144 A JP S6461144A
Authority
JP
Japan
Prior art keywords
data
section
reception
station
frame synchronization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62218619A
Other languages
Japanese (ja)
Inventor
Sawako Takatsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62218619A priority Critical patent/JPS6461144A/en
Publication of JPS6461144A publication Critical patent/JPS6461144A/en
Pending legal-status Critical Current

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To attain quick retrieval of a faulty station by providing a means to sent a loopback command signal to an optical slave station to a master station and providing a means sending a data to a signal line and sending the same data to a loopback line when the slave station receives a loopback command signal designated to its own slave station. CONSTITUTION:A data highway control section 8 is divided into a data reception section and a data transmission section. The data reception section decides the presence of frame synchronization to establish the frame synchronization or to eliminate it and checks the frame check sequency section FCS to detect the priority to fetch a reception data only when all checks are normal. On the other hand, the data transmission section applies processings such as generation of frame synchronization, generation of frame check sequency section FCS, insertion of data and insertion of control data to a control signal section LBCONT and sends the transmission data. The reception data synchronization detection section 10 is a circuit provided with a master station *1 only to detect the presence of frame synchronization of a reception signal from a loopback line l2, and is used to retrieve a faulty station.
JP62218619A 1987-08-31 1987-08-31 Data highway equipment Pending JPS6461144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62218619A JPS6461144A (en) 1987-08-31 1987-08-31 Data highway equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62218619A JPS6461144A (en) 1987-08-31 1987-08-31 Data highway equipment

Publications (1)

Publication Number Publication Date
JPS6461144A true JPS6461144A (en) 1989-03-08

Family

ID=16722792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62218619A Pending JPS6461144A (en) 1987-08-31 1987-08-31 Data highway equipment

Country Status (1)

Country Link
JP (1) JPS6461144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04891U (en) * 1990-04-17 1992-01-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04891U (en) * 1990-04-17 1992-01-07

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