JPS561643A - Error detecting system - Google Patents

Error detecting system

Info

Publication number
JPS561643A
JPS561643A JP7686579A JP7686579A JPS561643A JP S561643 A JPS561643 A JP S561643A JP 7686579 A JP7686579 A JP 7686579A JP 7686579 A JP7686579 A JP 7686579A JP S561643 A JPS561643 A JP S561643A
Authority
JP
Japan
Prior art keywords
error
signal
gate
detecting system
error detecting
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
JP7686579A
Other languages
Japanese (ja)
Inventor
Yasushi Fukunaga
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7686579A priority Critical patent/JPS561643A/en
Publication of JPS561643A publication Critical patent/JPS561643A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/245—Testing correct operation by using the properties of transmission codes

Abstract

PURPOSE:To secure an immediate detection for the error occurrence of the tag answer signal, by providing the working test function to the sequence circuit. CONSTITUTION:The sequence circuit consists of FF21, 22, and normally has the same phase as asychronous tag answer signals 11 and 12. When abnormal signal 13 is superimposed onto signals 11 and 12, the state varies for FF21, 22. And signal 37 indicating the error detection is delivered from gate 30 and then sent to the error porcessing circuit via OR gate 31.
JP7686579A 1979-06-20 1979-06-20 Error detecting system Pending JPS561643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7686579A JPS561643A (en) 1979-06-20 1979-06-20 Error detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7686579A JPS561643A (en) 1979-06-20 1979-06-20 Error detecting system

Publications (1)

Publication Number Publication Date
JPS561643A true JPS561643A (en) 1981-01-09

Family

ID=13617535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7686579A Pending JPS561643A (en) 1979-06-20 1979-06-20 Error detecting system

Country Status (1)

Country Link
JP (1) JPS561643A (en)

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