JPS61120957U - - Google Patents

Info

Publication number
JPS61120957U
JPS61120957U JP1984198172U JP19817284U JPS61120957U JP S61120957 U JPS61120957 U JP S61120957U JP 1984198172 U JP1984198172 U JP 1984198172U JP 19817284 U JP19817284 U JP 19817284U JP S61120957 U JPS61120957 U JP S61120957U
Authority
JP
Japan
Prior art keywords
volatile memory
detection means
light detection
light
memory
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
JP1984198172U
Other languages
Japanese (ja)
Other versions
JPS6230109Y2 (en
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 filed Critical
Priority to JP1984198172U priority Critical patent/JPS6230109Y2/ja
Publication of JPS61120957U publication Critical patent/JPS61120957U/ja
Application granted granted Critical
Publication of JPS6230109Y2 publication Critical patent/JPS6230109Y2/ja
Expired legal-status Critical Current

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Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例を示す一般的なブロ
ツク図、第２図は第１図に示した本考案一実施例
の具体例的回路構成例を示す図である。 １……電源、２……光検出手段、３……電流遮
断手段、４……揮発性メモリ、５……フオトトラ
ンジスタ、６……抵抗、７……トランジスタ、８
……ダイオード、ａ１，ａ２……外部からの光線
、ｖ１……光検出手段の出力、ｖ２……トランジ
スタ７のベース電圧、ｖ３……電源１の出力電圧
、Ｉ１，Ｉ２……電源電流。 FIG. 1 is a general block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a specific example of the circuit configuration of the embodiment of the present invention shown in FIG. DESCRIPTION OF SYMBOLS 1... Power supply, 2... Light detection means, 3... Current interrupting means, 4... Volatile memory, 5... Phototransistor, 6... Resistor, 7... Transistor, 8
. . . Diode, a1, a2 . . . Light beam from outside, v1 . . . Output of photodetection means, v2 .

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 揮発性メモリを有する装置において、外部光線
を検出するための光検出手段と、前記光検出手段
により駆動される電流遮断手段とを有し、前記装
置外からの光線が前記光検出手段で検出されると
、前記電流遮断手段により前記揮発性メモリに供
給される電源電流を遮断し、前記揮発性メモリの
記憶内容を消去することを特徴とするメモリ消去
回路。 A device having a volatile memory, comprising a light detection means for detecting external light, and a current interrupting means driven by the light detection means, wherein the light from outside the device is detected by the light detection means. The memory erasure circuit is characterized in that the current cutoff means cuts off the power supply current supplied to the volatile memory and erases the stored contents of the volatile memory.
JP1984198172U 1984-12-31 1984-12-31 Expired JPS6230109Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984198172U JPS6230109Y2 (en) 1984-12-31 1984-12-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984198172U JPS6230109Y2 (en) 1984-12-31 1984-12-31

Publications (2)

Publication Number Publication Date
JPS61120957U true JPS61120957U (en) 1986-07-30
JPS6230109Y2 JPS6230109Y2 (en) 1987-08-03

Family

ID=30756937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984198172U Expired JPS6230109Y2 (en) 1984-12-31 1984-12-31

Country Status (1)

Country Link
JP (1) JPS6230109Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63124153A (en) * 1986-11-05 1988-05-27 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Memory information protector
JPS63186314A (en) * 1987-01-28 1988-08-01 Anritsu Corp Memory back-up circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63124153A (en) * 1986-11-05 1988-05-27 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Memory information protector
JPS63186314A (en) * 1987-01-28 1988-08-01 Anritsu Corp Memory back-up circuit

Also Published As

Publication number Publication date
JPS6230109Y2 (en) 1987-08-03

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