JPS57133793A - Scanning circuit - Google Patents

Scanning circuit

Info

Publication number
JPS57133793A
JPS57133793A JP1985281A JP1985281A JPS57133793A JP S57133793 A JPS57133793 A JP S57133793A JP 1985281 A JP1985281 A JP 1985281A JP 1985281 A JP1985281 A JP 1985281A JP S57133793 A JPS57133793 A JP S57133793A
Authority
JP
Japan
Prior art keywords
terminal
circuit
transition
scanning
terminal data
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
JP1985281A
Other languages
Japanese (ja)
Inventor
Yoshikazu Tanaka
Masato Fujisawa
Kazuhiro Sato
Shoji Nojiri
Kiyoshi Shibuya
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1985281A priority Critical patent/JPS57133793A/en
Publication of JPS57133793A publication Critical patent/JPS57133793A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54575—Software application
    • H04Q3/54591—Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis

Abstract

PURPOSE:To reduce the burden in a central processing unit and a storage device, by providing a circuit if the status transition of terminal is caused to a scanning circuit. CONSTITUTION:Designated information at a terminal is transferred from a terminal data automatic transmission instruction circuit AS to a control circuit CONT, the information is converted to address information corresponding to the said terminal, the terminal data obtained at the previous scanning stored in the said address of the terminal data storage memory M is read out and it is inputted to a transition deciding circuit T together with the terminal data received at the terminal data reception circuit R at this scanning to discriminate the two terminal data for coincidence or dissidence. In case of coincidence, since no status transition is caused, the data is stored in the address corresponding to the said terminal of the transition data storage memory TM through the control of control circuit CONT. In case of dissidence, since the status transition is caused, the reception information at the scanning is abolished by the transition diciding circuit T and the content of the memory T is kept as the previous content.
JP1985281A 1981-02-13 1981-02-13 Scanning circuit Pending JPS57133793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985281A JPS57133793A (en) 1981-02-13 1981-02-13 Scanning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985281A JPS57133793A (en) 1981-02-13 1981-02-13 Scanning circuit

Publications (1)

Publication Number Publication Date
JPS57133793A true JPS57133793A (en) 1982-08-18

Family

ID=12010769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985281A Pending JPS57133793A (en) 1981-02-13 1981-02-13 Scanning circuit

Country Status (1)

Country Link
JP (1) JPS57133793A (en)

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