JPS54118212A - Disc memory device - Google Patents

Disc memory device

Info

Publication number
JPS54118212A
JPS54118212A JP2527178A JP2527178A JPS54118212A JP S54118212 A JPS54118212 A JP S54118212A JP 2527178 A JP2527178 A JP 2527178A JP 2527178 A JP2527178 A JP 2527178A JP S54118212 A JPS54118212 A JP S54118212A
Authority
JP
Japan
Prior art keywords
memory device
rotation times
contents
central processing
upper limits
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
JP2527178A
Other languages
Japanese (ja)
Inventor
Yasuyuki Toki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2527178A priority Critical patent/JPS54118212A/en
Publication of JPS54118212A publication Critical patent/JPS54118212A/en
Pending 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
    • G11B19/06—Control of operating function, e.g. switching from recording to reproducing by counting or timing of machine operations

Abstract

PURPOSE:To control the life of flexible discs by providing the recording part of the gross total rotation times information of the discs themselves. CONSTITUTION:When the processing using a flexible disc 1a is finished, a central processing unit 16 reads out the content of the counter for rotation times built in a drive unit 11 and adds the same to the contents having been written in the memory region 31 of a main memory device 8. Parallel with these processings, whether the contents of the memory region 31 or 32 of the main memory device 17 have reached the upper limits of the predetermined rotation times and error occurrence times or not is discriminated. When these exceed the respective upper limits, the central processing unit 16 performs the displaying to the effect that said flexible disc has exceeded its service limit to an output unit 13.
JP2527178A 1978-03-06 1978-03-06 Disc memory device Pending JPS54118212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2527178A JPS54118212A (en) 1978-03-06 1978-03-06 Disc memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2527178A JPS54118212A (en) 1978-03-06 1978-03-06 Disc memory device

Publications (1)

Publication Number Publication Date
JPS54118212A true JPS54118212A (en) 1979-09-13

Family

ID=12161357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2527178A Pending JPS54118212A (en) 1978-03-06 1978-03-06 Disc memory device

Country Status (1)

Country Link
JP (1) JPS54118212A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169306A (en) * 1982-03-31 1983-10-05 Matsushita Electric Ind Co Ltd Video tape reproducing device of pulse code modulating system
JPS59113511A (en) * 1982-12-20 1984-06-30 Teac Co Digital magnetic recording device
JPS59125108A (en) * 1982-12-29 1984-07-19 Anritsu Corp Control circuit of program attenuator
JPS60116534U (en) * 1984-01-13 1985-08-07 株式会社日立製作所 word processor
JPS6187271A (en) * 1984-10-05 1986-05-02 Canon Inc Management system of recording medium
US4626931A (en) * 1984-05-29 1986-12-02 Sony Corporation Contact printing apparatus with presettable means indicating number of copy and master tape life expectancy
JPH02141964A (en) * 1988-11-21 1990-05-31 Nec Corp Optical disk device
JPH09147538A (en) * 1995-11-20 1997-06-06 Nec Shizuoka Ltd Floppy disk

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58169306A (en) * 1982-03-31 1983-10-05 Matsushita Electric Ind Co Ltd Video tape reproducing device of pulse code modulating system
JPS59113511A (en) * 1982-12-20 1984-06-30 Teac Co Digital magnetic recording device
JPS59125108A (en) * 1982-12-29 1984-07-19 Anritsu Corp Control circuit of program attenuator
JPH0238007B2 (en) * 1982-12-29 1990-08-28 Anritsu Corp
JPS60116534U (en) * 1984-01-13 1985-08-07 株式会社日立製作所 word processor
US4626931A (en) * 1984-05-29 1986-12-02 Sony Corporation Contact printing apparatus with presettable means indicating number of copy and master tape life expectancy
JPS6187271A (en) * 1984-10-05 1986-05-02 Canon Inc Management system of recording medium
JPH02141964A (en) * 1988-11-21 1990-05-31 Nec Corp Optical disk device
JPH09147538A (en) * 1995-11-20 1997-06-06 Nec Shizuoka Ltd Floppy disk

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