JPS56117382A - Read-in control system in magnetic recording and playback device - Google Patents

Read-in control system in magnetic recording and playback device

Info

Publication number
JPS56117382A
JPS56117382A JP1939980A JP1939980A JPS56117382A JP S56117382 A JPS56117382 A JP S56117382A JP 1939980 A JP1939980 A JP 1939980A JP 1939980 A JP1939980 A JP 1939980A JP S56117382 A JPS56117382 A JP S56117382A
Authority
JP
Japan
Prior art keywords
read
block
detection
level
amplitude
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
JP1939980A
Other languages
Japanese (ja)
Other versions
JPH0243242B2 (en
Inventor
Michio Kawase
Tadahiro Wada
Hisashi Kimura
Kiyoo Moroto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1939980A priority Critical patent/JPS56117382A/en
Publication of JPS56117382A publication Critical patent/JPS56117382A/en
Publication of JPH0243242B2 publication Critical patent/JPH0243242B2/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals

Abstract

PURPOSE:To prevent the read-in error of ID block, by making the detection level of read-in waveform between ID block and data block in different detection level. CONSTITUTION:In a wide magnetic tape having ID block, the read-in level of ID block is lower than that of data block. Then, the signal read-in signal (c) is fed to the amplitude detection circuit 7 for data block detection for the high level via an amplifier 6 and to the low level amplitude detection circuit 8 for ID block detection. Next, the output of both the circuits is output from the line (e) with the selection at the selection circuit 9 to which the ID recognizing signal is input. Thus, the read-in error of ID block can be prevented by the detection of the amplitude detection circuit corresponding to the amplitude level.
JP1939980A 1980-02-19 1980-02-19 Read-in control system in magnetic recording and playback device Granted JPS56117382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1939980A JPS56117382A (en) 1980-02-19 1980-02-19 Read-in control system in magnetic recording and playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1939980A JPS56117382A (en) 1980-02-19 1980-02-19 Read-in control system in magnetic recording and playback device

Publications (2)

Publication Number Publication Date
JPS56117382A true JPS56117382A (en) 1981-09-14
JPH0243242B2 JPH0243242B2 (en) 1990-09-27

Family

ID=11998188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1939980A Granted JPS56117382A (en) 1980-02-19 1980-02-19 Read-in control system in magnetic recording and playback device

Country Status (1)

Country Link
JP (1) JPS56117382A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188842A (en) * 1983-04-12 1984-10-26 Fujitsu Ltd Signal processing circuit for optical disk device
JPH05120616A (en) * 1991-10-25 1993-05-18 Teac Corp Disk device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0594139U (en) * 1992-05-26 1993-12-21 熊本製粉株式会社 Packaging bag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188842A (en) * 1983-04-12 1984-10-26 Fujitsu Ltd Signal processing circuit for optical disk device
JPH0321987B2 (en) * 1983-04-12 1991-03-25 Fujitsu Ltd
JPH05120616A (en) * 1991-10-25 1993-05-18 Teac Corp Disk device

Also Published As

Publication number Publication date
JPH0243242B2 (en) 1990-09-27

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