JPS57191852A - Magnetic tape device - Google Patents

Magnetic tape device

Info

Publication number
JPS57191852A
JPS57191852A JP56076950A JP7695081A JPS57191852A JP S57191852 A JPS57191852 A JP S57191852A JP 56076950 A JP56076950 A JP 56076950A JP 7695081 A JP7695081 A JP 7695081A JP S57191852 A JPS57191852 A JP S57191852A
Authority
JP
Japan
Prior art keywords
tape
index
hole
magnetic tape
information
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
JP56076950A
Other languages
Japanese (ja)
Inventor
Yoshitaka Aoki
Akira Imamura
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 JP56076950A priority Critical patent/JPS57191852A/en
Publication of JPS57191852A publication Critical patent/JPS57191852A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To obtain a 1/4-inch cartridge magnetic tape device for information processing data interchange capable of preventing resorded information from being overlapped on a marker hole, by counting and detecting an index position on the basis of the detected result of a marker hole of a tape. CONSTITUTION:When the load point hoe LP of a 1/4-inch magnetic tape is detected, an FF17 is set to control a gate group 20, and in a counter 18, the initial value which correponds to the distance between the hole LP and an index is set. For the forward run of the tape, this initial value is counted down by tachometer pulses which corresponds to the rotation of a capstan to zero, and then an index detecting circuit 19 generates an index detection signal and sends it to a higher device. Consequently, the tape run is stopped through the higher divece before a data block comes to an early warning hole EW. For the backwared run of the tape, the tachometer pulses are counted up and the overlapping of the marker hold and recorded information is evaded to obtain a 1/4-inch cartridge magnetic tape device for interchange of information processing data free of the absence of rescorded information.
JP56076950A 1981-05-21 1981-05-21 Magnetic tape device Pending JPS57191852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56076950A JPS57191852A (en) 1981-05-21 1981-05-21 Magnetic tape device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56076950A JPS57191852A (en) 1981-05-21 1981-05-21 Magnetic tape device

Publications (1)

Publication Number Publication Date
JPS57191852A true JPS57191852A (en) 1982-11-25

Family

ID=13620042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56076950A Pending JPS57191852A (en) 1981-05-21 1981-05-21 Magnetic tape device

Country Status (1)

Country Link
JP (1) JPS57191852A (en)

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