JPS6417204A - Information reproducing system - Google Patents

Information reproducing system

Info

Publication number
JPS6417204A
JPS6417204A JP17092587A JP17092587A JPS6417204A JP S6417204 A JPS6417204 A JP S6417204A JP 17092587 A JP17092587 A JP 17092587A JP 17092587 A JP17092587 A JP 17092587A JP S6417204 A JPS6417204 A JP S6417204A
Authority
JP
Japan
Prior art keywords
detecting window
pulse detecting
lead pulse
format
generating
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
JP17092587A
Other languages
Japanese (ja)
Inventor
Makoto Koizumi
Reijirou Tsuchiya
Motoi Aoi
Yoshihisa Kamo
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17092587A priority Critical patent/JPS6417204A/en
Publication of JPS6417204A publication Critical patent/JPS6417204A/en
Pending legal-status Critical Current

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  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To stably generate a lead pulse detecting window by absorbing a dispersion of an electromagnetic conversion characteristic between tracks, and to improve an error rate of a device, by generating the lead pulse detecting window from lead pulse detecting window generating information which has been recorded in recording information on the track. CONSTITUTION:A recording format of a magnetic disk device is formed by a gap part 1, an ID format part 2, and a data format part 3. The ID format part 2 is formed by an SYNC part 6, an AL part 7 which has recorded information used for generating a lead pulse detecting window, an AM part 8, an ID part 9, and a CRC part 10, and the AL part 7 is formed by an isolated bit recording pattern part 4 and a 3-bit recording pattern part 5. Also, a 3-bit pattern and an isolated pattern are recorded as detecting window generating information in each track, and at the time of reproduction, by reading the respective peak amplitudes, its intermediate value is set to a window setting level. In such a way, the lead pulse detecting window can be generated stably, and an error rate of the device is improved.
JP17092587A 1987-07-10 1987-07-10 Information reproducing system Pending JPS6417204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17092587A JPS6417204A (en) 1987-07-10 1987-07-10 Information reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17092587A JPS6417204A (en) 1987-07-10 1987-07-10 Information reproducing system

Publications (1)

Publication Number Publication Date
JPS6417204A true JPS6417204A (en) 1989-01-20

Family

ID=15913901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17092587A Pending JPS6417204A (en) 1987-07-10 1987-07-10 Information reproducing system

Country Status (1)

Country Link
JP (1) JPS6417204A (en)

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