JPS55105815A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS55105815A
JPS55105815A JP1003679A JP1003679A JPS55105815A JP S55105815 A JPS55105815 A JP S55105815A JP 1003679 A JP1003679 A JP 1003679A JP 1003679 A JP1003679 A JP 1003679A JP S55105815 A JPS55105815 A JP S55105815A
Authority
JP
Japan
Prior art keywords
equalizer
pulse narrow
reading
record
gain
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
JP1003679A
Other languages
Japanese (ja)
Inventor
Takashi Aikawa
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 JP1003679A priority Critical patent/JPS55105815A/en
Publication of JPS55105815A publication Critical patent/JPS55105815A/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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording

Abstract

PURPOSE:To reduce the reading error caused by the track position of the large-capacity record by varying the delay amount of the pulse narrow equalizer of the demodulation system in accordance with the position of the magnetic head. CONSTITUTION:The control is given to the gain/loss amount of gain and loss output 7 and 9 each to reproduction reading output 8 and via delay circuit 6 of the pulse narrow equalizer. Then the pulse narrow equalizing is given satisfactorily for the demodulated signals through amplifiers 13, 15 and 14 of the pulse narrow equalizer plus composite amplifier 16 and others and regardless of the tracks featuring the different head floating amount, the anti-head relative speed, the record density and other factors. Thus the good demodulation reading signal is generated via integration detecting circuit 18. As a result, the reading error due to the track position of the large-capacity digital record can be reduced.
JP1003679A 1979-01-31 1979-01-31 Magnetic disk device Pending JPS55105815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1003679A JPS55105815A (en) 1979-01-31 1979-01-31 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1003679A JPS55105815A (en) 1979-01-31 1979-01-31 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPS55105815A true JPS55105815A (en) 1980-08-13

Family

ID=11739158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1003679A Pending JPS55105815A (en) 1979-01-31 1979-01-31 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPS55105815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580176A (en) * 1983-11-21 1986-04-01 International Business Machines Corporation Adaptive equalization circuit for magnetic recording channels utilizing signal timing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580176A (en) * 1983-11-21 1986-04-01 International Business Machines Corporation Adaptive equalization circuit for magnetic recording channels utilizing signal timing

Similar Documents

Publication Publication Date Title
EP0117753A3 (en) Methods of and apparatus for recording digital information signals
JPS576433A (en) Magnetic recorder and reproducer
ES440872A1 (en) Reproducing apparatus with drop out suppression circuit for audio and video signals
JPS55105815A (en) Magnetic disk device
ES8309026A1 (en) Method and apparatus for recording or reproducing stereophonic information in a magnetic record carrier
JPS53149308A (en) Recorder-reproducer of digital signals
GB1218488A (en) Improvements in and relating to magnetic tape recording and playback systems
JPS5528547A (en) Magnetic recorder/reproducer
JPS5788511A (en) Digital recording signal reproducing device
JPS5562506A (en) Video tape recorder
JPS5255608A (en) Magnetic recording and playback system
JPS57103113A (en) Magnetic recorder and reproducer
JPS5755509A (en) Recorder and reproducer
JPS5668908A (en) Improving method for efficiency of regenerative amplifier of pcm audio processor
JPS5786121A (en) Data reproducing circuit of magnetic recorder and reproducer
JPS5644171A (en) Pcm recording and reproducing device
JPS55108906A (en) Magnetic recording device
JPS5755550A (en) Magnetic recorder and reproducer
JPS5674821A (en) Tracking control unit for magnetic tape device
JPS5712402A (en) Traveling control system of tape recorder
JPS55141819A (en) Magnetic recording and reproducing circuit
JPS55163627A (en) Information recorder/reproducer
JPS5263305A (en) Tracking servo device
JPS56117379A (en) Hand-cut editing process
JPS5379508A (en) Magnetic recorder/reproducer