JPS5331925A - Memory protection system - Google Patents

Memory protection system

Info

Publication number
JPS5331925A
JPS5331925A JP10579176A JP10579176A JPS5331925A JP S5331925 A JPS5331925 A JP S5331925A JP 10579176 A JP10579176 A JP 10579176A JP 10579176 A JP10579176 A JP 10579176A JP S5331925 A JPS5331925 A JP S5331925A
Authority
JP
Japan
Prior art keywords
memory protection
protection system
memory
protection
securing
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.)
Granted
Application number
JP10579176A
Other languages
English (en)
Other versions
JPS6046743B2 (ja
Inventor
Tsutomu Sakamaki
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 JP51105791A priority Critical patent/JPS6046743B2/ja
Publication of JPS5331925A publication Critical patent/JPS5331925A/ja
Publication of JPS6046743B2 publication Critical patent/JPS6046743B2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Power Sources (AREA)
  • Storage Device Security (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
JP51105791A 1976-09-06 1976-09-06 記憶保護方式 Expired JPS6046743B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51105791A JPS6046743B2 (ja) 1976-09-06 1976-09-06 記憶保護方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51105791A JPS6046743B2 (ja) 1976-09-06 1976-09-06 記憶保護方式

Publications (2)

Publication Number Publication Date
JPS5331925A true JPS5331925A (en) 1978-03-25
JPS6046743B2 JPS6046743B2 (ja) 1985-10-17

Family

ID=14416946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51105791A Expired JPS6046743B2 (ja) 1976-09-06 1976-09-06 記憶保護方式

Country Status (1)

Country Link
JP (1) JPS6046743B2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188835U (ja) * 1987-04-23 1987-12-01
US5226006A (en) * 1991-05-15 1993-07-06 Silicon Storage Technology, Inc. Write protection circuit for use with an electrically alterable non-volatile memory card

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61201433U (ja) * 1985-06-07 1986-12-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62188835U (ja) * 1987-04-23 1987-12-01
US5226006A (en) * 1991-05-15 1993-07-06 Silicon Storage Technology, Inc. Write protection circuit for use with an electrically alterable non-volatile memory card

Also Published As

Publication number Publication date
JPS6046743B2 (ja) 1985-10-17

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