JPS6456068U - - Google Patents

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Publication number
JPS6456068U
JPS6456068U JP15020787U JP15020787U JPS6456068U JP S6456068 U JPS6456068 U JP S6456068U JP 15020787 U JP15020787 U JP 15020787U JP 15020787 U JP15020787 U JP 15020787U JP S6456068 U JPS6456068 U JP S6456068U
Authority
JP
Japan
Prior art keywords
magnetic disk
power supply
power
detection circuit
abnormality detection
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
JP15020787U
Other languages
Japanese (ja)
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 JP15020787U priority Critical patent/JPS6456068U/ja
Publication of JPS6456068U publication Critical patent/JPS6456068U/ja
Pending legal-status Critical Current

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  • Signal Processing For Digital Recording And Reproducing (AREA)

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ブロツク図、
第２図は上記実施例の動作説明に供するタイムチ
ヤートである。 １１……磁気デイスク装置、１２……制御装置
、１４……電源装置、１４ａ……電源異常検出回
路、１５……ゲート、１６……インバータ。 FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a time chart for explaining the operation of the above embodiment. DESCRIPTION OF SYMBOLS 11... Magnetic disk device, 12... Control device, 14... Power supply device, 14a... Power supply abnormality detection circuit, 15... Gate, 16... Inverter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁気デイスクへの情報の書込みに際しセクタア
ドレスを読み出し、目標のセクタであることを確
認したうえ、データの書込みを行なう磁気デイス
ク装置において、電源電圧の異常を検出する電源
異常検出回路と、この検出回路からの電源異常検
出信号により磁気デイスクからの読出し信号を禁
止するゲート回路を具備し、停電時に磁気デイス
クへの誤書込みを防ぐようにしたことを特徴とす
る磁気デイスク装置の誤書込防止装置。 A power supply abnormality detection circuit that detects an abnormality in the power supply voltage and this detection circuit in a magnetic disk device that reads a sector address when writing information to a magnetic disk, confirms that it is the target sector, and then writes data. What is claimed is: 1. An erroneous write prevention device for a magnetic disk device, comprising a gate circuit that inhibits read signals from the magnetic disk in response to a power abnormality detection signal from the magnetic disk drive, thereby preventing erroneous writing to the magnetic disk during a power outage.
JP15020787U 1987-09-30 1987-09-30 Pending JPS6456068U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15020787U JPS6456068U (en) 1987-09-30 1987-09-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15020787U JPS6456068U (en) 1987-09-30 1987-09-30

Publications (1)

Publication Number Publication Date
JPS6456068U true JPS6456068U (en) 1989-04-06

Family

ID=31423140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15020787U Pending JPS6456068U (en) 1987-09-30 1987-09-30

Country Status (1)

Country Link
JP (1) JPS6456068U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04289558A (en) * 1991-03-19 1992-10-14 Fujitsu Ltd Write data protecting system for power hit in disk device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04289558A (en) * 1991-03-19 1992-10-14 Fujitsu Ltd Write data protecting system for power hit in disk device

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