JPS6479979A - Guard pattern detecting circuit for magnetic disk device - Google Patents

Guard pattern detecting circuit for magnetic disk device

Info

Publication number
JPS6479979A
JPS6479979A JP23764787A JP23764787A JPS6479979A JP S6479979 A JPS6479979 A JP S6479979A JP 23764787 A JP23764787 A JP 23764787A JP 23764787 A JP23764787 A JP 23764787A JP S6479979 A JPS6479979 A JP S6479979A
Authority
JP
Japan
Prior art keywords
magnetic disk
detecting circuit
pattern detecting
guard
disk device
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
JP23764787A
Other languages
Japanese (ja)
Inventor
Hideo Asada
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
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 filed Critical NEC Corp
Priority to JP23764787A priority Critical patent/JPS6479979A/en
Publication of JPS6479979A publication Critical patent/JPS6479979A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To suppress an influence on a magnetic disk main body due to a guard pattern detecting circuit malfunction by resetting the latch circuit of the guard pattern detecting circuit by means of the error releasing signal of the magnetic disk device. CONSTITUTION:A synchronizing pulse read from a servo disk where a servo pattern is written onto a magnetic disk board is given to a shift register 3 as an input data signal 1 together with a clock pulse signal 2. A decoder 4 decodes the contents of the register 3, detects a guard band pattern, and outputs guard band signals 5 and 6. Latch circuits 8 and 9 hold the signals 5 and 6 for a while, and are reset by the counted value of a counter 10 controlled by a logic circuit 11. Further, the circuit 8 and 9 are reset by an error releasing signal 12 of the magnetic disk device. In such a way, the influence on the magnetic device main body due to the guard pattern detecting circuit malfunction can be suppressed.
JP23764787A 1987-09-22 1987-09-22 Guard pattern detecting circuit for magnetic disk device Pending JPS6479979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23764787A JPS6479979A (en) 1987-09-22 1987-09-22 Guard pattern detecting circuit for magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23764787A JPS6479979A (en) 1987-09-22 1987-09-22 Guard pattern detecting circuit for magnetic disk device

Publications (1)

Publication Number Publication Date
JPS6479979A true JPS6479979A (en) 1989-03-24

Family

ID=17018421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23764787A Pending JPS6479979A (en) 1987-09-22 1987-09-22 Guard pattern detecting circuit for magnetic disk device

Country Status (1)

Country Link
JP (1) JPS6479979A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU734579B2 (en) * 1998-10-19 2001-06-14 Samsung Electronics Co., Ltd. Channel assigning device and method in CDMA communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU734579B2 (en) * 1998-10-19 2001-06-14 Samsung Electronics Co., Ltd. Channel assigning device and method in CDMA communication system

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