JPS51120644A - Memory content protection circuit - Google Patents

Memory content protection circuit

Info

Publication number
JPS51120644A
JPS51120644A JP50045969A JP4596975A JPS51120644A JP S51120644 A JPS51120644 A JP S51120644A JP 50045969 A JP50045969 A JP 50045969A JP 4596975 A JP4596975 A JP 4596975A JP S51120644 A JPS51120644 A JP S51120644A
Authority
JP
Japan
Prior art keywords
protection circuit
content protection
memory content
memory
memory section
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
JP50045969A
Other languages
Japanese (ja)
Other versions
JPS5528265B2 (en
Inventor
Takeji Kobayashi
Shinji Murakami
Masataka Mitani
Shozo Kataoka
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.)
Panasonic Electric Works Co Ltd
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Matsushita Electric Works 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 Matsushita Electric Industrial Co Ltd, Matsushita Electric Works Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP50045969A priority Critical patent/JPS51120644A/en
Publication of JPS51120644A publication Critical patent/JPS51120644A/en
Publication of JPS5528265B2 publication Critical patent/JPS5528265B2/ja
Granted legal-status Critical Current

Links

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  • Electronic Switches (AREA)

Abstract

PURPOSE:The memory section is reset only when there is a power failure for a long time requiring the memory section to be reset, and the memory contents of the memory section are maintained in a power failure for a short time, thereby protecting the memory contents.
JP50045969A 1975-04-15 1975-04-15 Memory content protection circuit Granted JPS51120644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50045969A JPS51120644A (en) 1975-04-15 1975-04-15 Memory content protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50045969A JPS51120644A (en) 1975-04-15 1975-04-15 Memory content protection circuit

Publications (2)

Publication Number Publication Date
JPS51120644A true JPS51120644A (en) 1976-10-22
JPS5528265B2 JPS5528265B2 (en) 1980-07-26

Family

ID=12734047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50045969A Granted JPS51120644A (en) 1975-04-15 1975-04-15 Memory content protection circuit

Country Status (1)

Country Link
JP (1) JPS51120644A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929843U (en) * 1982-08-18 1984-02-24 進興電器株式会社 electronic switch control circuit
US6795913B1 (en) * 1999-11-30 2004-09-21 Koninklijke Philips Electronics N.V. Method for restarting an apparatus if the integrity of data in a memory is lost during micro-outage of power supply

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58177532A (en) * 1982-04-13 1983-10-18 Mitsubishi Electric Corp Light beam control mechanism

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842552U (en) * 1971-09-22 1973-05-31
JPS4898053U (en) * 1972-02-23 1973-11-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842552U (en) * 1971-09-22 1973-05-31
JPS4898053U (en) * 1972-02-23 1973-11-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929843U (en) * 1982-08-18 1984-02-24 進興電器株式会社 electronic switch control circuit
JPH0346592Y2 (en) * 1982-08-18 1991-10-02
US6795913B1 (en) * 1999-11-30 2004-09-21 Koninklijke Philips Electronics N.V. Method for restarting an apparatus if the integrity of data in a memory is lost during micro-outage of power supply

Also Published As

Publication number Publication date
JPS5528265B2 (en) 1980-07-26

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