JPS56163510A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS56163510A
JPS56163510A JP6732080A JP6732080A JPS56163510A JP S56163510 A JPS56163510 A JP S56163510A JP 6732080 A JP6732080 A JP 6732080A JP 6732080 A JP6732080 A JP 6732080A JP S56163510 A JPS56163510 A JP S56163510A
Authority
JP
Japan
Prior art keywords
signal
gate
output
flip
read
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
JP6732080A
Other languages
Japanese (ja)
Other versions
JPS6129045B2 (en
Inventor
Masatoshi Tsunoda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6732080A priority Critical patent/JPS56163510A/en
Publication of JPS56163510A publication Critical patent/JPS56163510A/en
Publication of JPS6129045B2 publication Critical patent/JPS6129045B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions

Abstract

PURPOSE:To prevent an operation of a read-only switch from giving an evil effect to the recording action, by adding a flip-flop circuit to which both a unit selection signal and a read-only signal are applied via a logical gate circuit. CONSTITUTION:A logical gate 32 supplies the output of a reverse gate 30 which turns a unit selection signal 7 into a reverse logical output 31 and a read-only signal 11 respectively. An OR gate 33 uses an output 34 for its input, and a flip-flop 35 uses the output of the gate 33 for its input. Furthermore a logical gate 37 uses the signal 7 as well as a gate read-only signal 36 connected to a blocking input terminal of a record current supply circuit 5 as well as to a line driver 18 with the output of the flip-flop 35 for its input. Then a clock signal 39 is applied to the flip-flop 35. As a result, the output 36 of the flip-flop can be prevented from varying by an operation of a read-only switch 12 when the signal 7 is set at a high level.
JP6732080A 1980-05-21 1980-05-21 Magnetic disk device Granted JPS56163510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6732080A JPS56163510A (en) 1980-05-21 1980-05-21 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6732080A JPS56163510A (en) 1980-05-21 1980-05-21 Magnetic disk device

Publications (2)

Publication Number Publication Date
JPS56163510A true JPS56163510A (en) 1981-12-16
JPS6129045B2 JPS6129045B2 (en) 1986-07-04

Family

ID=13341601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6732080A Granted JPS56163510A (en) 1980-05-21 1980-05-21 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS56163510A (en)

Also Published As

Publication number Publication date
JPS6129045B2 (en) 1986-07-04

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