JPS5522274A - Exclusive control system - Google Patents

Exclusive control system

Info

Publication number
JPS5522274A
JPS5522274A JP9510278A JP9510278A JPS5522274A JP S5522274 A JPS5522274 A JP S5522274A JP 9510278 A JP9510278 A JP 9510278A JP 9510278 A JP9510278 A JP 9510278A JP S5522274 A JPS5522274 A JP S5522274A
Authority
JP
Japan
Prior art keywords
read
reading
time
exclusive control
circuit
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
JP9510278A
Other languages
Japanese (ja)
Inventor
Michio Hashimoto
Hidemi Fujiwara
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 JP9510278A priority Critical patent/JPS5522274A/en
Publication of JPS5522274A publication Critical patent/JPS5522274A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management 

Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE:To eliminate the trouble for execution of writing in case the conflict exists between the reading and writing to a certain memory device by the exclusive control for the reading and writing means, by setting up the read enable time band. CONSTITUTION:In case the prescribed data is written at a fixed time into major memory device 200 through electronic computer system 100, both the read start time and the read end time to permit the information reading for electronic computer system 101 are memorized in registers 211a and 211b at data memory region 211. When the reading is permitted by the exclusive control means, read request means 3 transmits the signals. At the same time, reading circuit 21 of read/write control means 2 sets the value of memory parts 211a and 211b to registers 21a and 21b each. Then comparison circuit 23 transfers the contents of region 211 via circuit 21 if the present time of register 22a is between the value of registers 22a and 22b, while circuit 23 transmits the read unable and read end signals to means 3 and the exclusive control means each if the present time is not the intermediate value respectively.
JP9510278A 1978-08-04 1978-08-04 Exclusive control system Pending JPS5522274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9510278A JPS5522274A (en) 1978-08-04 1978-08-04 Exclusive control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9510278A JPS5522274A (en) 1978-08-04 1978-08-04 Exclusive control system

Publications (1)

Publication Number Publication Date
JPS5522274A true JPS5522274A (en) 1980-02-16

Family

ID=14128504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9510278A Pending JPS5522274A (en) 1978-08-04 1978-08-04 Exclusive control system

Country Status (1)

Country Link
JP (1) JPS5522274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618546U (en) * 1992-08-17 1994-03-11 オザキ冷機株式会社 Nozzle for sealing joints of buildings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618546U (en) * 1992-08-17 1994-03-11 オザキ冷機株式会社 Nozzle for sealing joints of buildings

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