JPS5379417A - Protection system for memory content - Google Patents

Protection system for memory content

Info

Publication number
JPS5379417A
JPS5379417A JP15688076A JP15688076A JPS5379417A JP S5379417 A JPS5379417 A JP S5379417A JP 15688076 A JP15688076 A JP 15688076A JP 15688076 A JP15688076 A JP 15688076A JP S5379417 A JPS5379417 A JP S5379417A
Authority
JP
Japan
Prior art keywords
memory content
protection system
effectiveness
deficiency
protect
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
JP15688076A
Other languages
Japanese (ja)
Inventor
Tadashi Hirota
Akiyasu Suzuki
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
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15688076A priority Critical patent/JPS5379417A/en
Publication of JPS5379417A publication Critical patent/JPS5379417A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/241—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for stored program controlled exchanges

Abstract

PURPOSE:To protect the hardware to the run away due to the deficiency on software design, by providing the means to inhibit write-in to the fixed memory content area and to control the effectiveness of the means with the will of maintenance personnel.
JP15688076A 1976-12-24 1976-12-24 Protection system for memory content Pending JPS5379417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15688076A JPS5379417A (en) 1976-12-24 1976-12-24 Protection system for memory content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15688076A JPS5379417A (en) 1976-12-24 1976-12-24 Protection system for memory content

Publications (1)

Publication Number Publication Date
JPS5379417A true JPS5379417A (en) 1978-07-13

Family

ID=15637398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15688076A Pending JPS5379417A (en) 1976-12-24 1976-12-24 Protection system for memory content

Country Status (1)

Country Link
JP (1) JPS5379417A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143300A (en) * 1981-02-28 1982-09-04 Shimadzu Corp Computerized x-ray device
JPS5880200A (en) * 1981-11-04 1983-05-14 Mitsubishi Electric Corp Memory protecting circuit
JPS58133700A (en) * 1982-01-28 1983-08-09 キ−ンツレ・アパラ−テ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Apparatus for protecting data in non-endurable readable/writable memory
JPS58184656A (en) * 1982-04-22 1983-10-28 Nec Corp Program storage system
JPS5911599A (en) * 1982-07-12 1984-01-21 Sony Corp Terminal device of character graph information system
JPS5940119U (en) * 1982-09-09 1984-03-14 株式会社八木通商 air purifier

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143300A (en) * 1981-02-28 1982-09-04 Shimadzu Corp Computerized x-ray device
JPS5880200A (en) * 1981-11-04 1983-05-14 Mitsubishi Electric Corp Memory protecting circuit
JPS58133700A (en) * 1982-01-28 1983-08-09 キ−ンツレ・アパラ−テ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Apparatus for protecting data in non-endurable readable/writable memory
JPS58184656A (en) * 1982-04-22 1983-10-28 Nec Corp Program storage system
JPS5911599A (en) * 1982-07-12 1984-01-21 Sony Corp Terminal device of character graph information system
JPS5940119U (en) * 1982-09-09 1984-03-14 株式会社八木通商 air purifier

Similar Documents

Publication Publication Date Title
JPS5242334A (en) Computer
CA949220A (en) Multiprogrammable, multiprocessor computer system
DK137138B (en) Control system for cathodic protection.
JPS5379417A (en) Protection system for memory content
JPS5334429A (en) Memory control system
JPS5330A (en) Refresh control system
JPS5397188A (en) Data transmission system
JPS5277640A (en) Refresh control system
JPS539434A (en) Data processor system
JPS5378139A (en) Processor stopping system
JPS5419338A (en) Control system for data transfer
JPS5387900A (en) Control system for doors
JPS5433795A (en) Bank note treating system
JPS53101237A (en) Refresh control system
JPS5280747A (en) Buffer memory control system
JPS5441642A (en) Information processor
JPS5237412A (en) Protective system for memory unit
JPS53101238A (en) Operation control system for memory device
JPS53146542A (en) Memory protection system
JPS53116041A (en) System controller
JPS52125240A (en) Data arrangement control system
BR7501605D0 (en) SYSTEM EQUIPPED WITH AN ARRANGEMENT THAT PROVIDES PROTECTION AGAINST THE CROWN EFFECT
JPS52141144A (en) Data input unit
JPS5343351A (en) Trouble detecting system for elevator
JPS51124335A (en) Memory control device in multiprocessor configuration