JPS5528537A - Write/read circuit for digital magnetic recording - Google Patents

Write/read circuit for digital magnetic recording

Info

Publication number
JPS5528537A
JPS5528537A JP10075078A JP10075078A JPS5528537A JP S5528537 A JPS5528537 A JP S5528537A JP 10075078 A JP10075078 A JP 10075078A JP 10075078 A JP10075078 A JP 10075078A JP S5528537 A JPS5528537 A JP S5528537A
Authority
JP
Japan
Prior art keywords
circuit
compensation
shift
pulse
waveform
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
JP10075078A
Other languages
Japanese (ja)
Other versions
JPS6221165B2 (en
Inventor
Makoto Tachibana
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 JP10075078A priority Critical patent/JPS5528537A/en
Publication of JPS5528537A publication Critical patent/JPS5528537A/en
Publication of JPS6221165B2 publication Critical patent/JPS6221165B2/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
    • 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

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To eliminate completely the peak shift which affects the linear recording density increment by giving a shift by a fixed amount to the pulse in the specified pattern prior to writing and then providing the waveform equalization circuit to the reading output side of the magnetic head. CONSTITUTION:For waveform 11 converted from the binary digital information through the FM modulation system or the like, the specified pulse is shifted in the necessary amount at compensation circuit 12 and according to the information pattern. Pulse 13 received compensation before writing drives head driving circuit 14 to record the data linearly on the magnetic medium. Head read signal 21 is amplified via low-noise preamplifier 22 and then led to equalization circuit 23. The output of circuit 23 is sent to demodulation circuit 24 to be demodulated to binary digital information 25. As the shift compensation for the recording position at the writing time is applied together with the compensation for the waveform interference at the reading time, the peak shift can be avoided completely.
JP10075078A 1978-08-17 1978-08-17 Write/read circuit for digital magnetic recording Granted JPS5528537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10075078A JPS5528537A (en) 1978-08-17 1978-08-17 Write/read circuit for digital magnetic recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10075078A JPS5528537A (en) 1978-08-17 1978-08-17 Write/read circuit for digital magnetic recording

Publications (2)

Publication Number Publication Date
JPS5528537A true JPS5528537A (en) 1980-02-29
JPS6221165B2 JPS6221165B2 (en) 1987-05-11

Family

ID=14282197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10075078A Granted JPS5528537A (en) 1978-08-17 1978-08-17 Write/read circuit for digital magnetic recording

Country Status (1)

Country Link
JP (1) JPS5528537A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989196A (en) * 1987-12-01 1991-01-29 Matsushita Electric Industrial Co., Ltd. Optical information recording apparatus
EP0871171A3 (en) * 1997-04-10 2000-01-05 Pioneer Electronic Corporation Signal converting device and information recording apparatus employing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046114A (en) * 1973-08-27 1975-04-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046114A (en) * 1973-08-27 1975-04-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989196A (en) * 1987-12-01 1991-01-29 Matsushita Electric Industrial Co., Ltd. Optical information recording apparatus
EP0871171A3 (en) * 1997-04-10 2000-01-05 Pioneer Electronic Corporation Signal converting device and information recording apparatus employing the same

Also Published As

Publication number Publication date
JPS6221165B2 (en) 1987-05-11

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