JPS6479979A - Guard pattern detecting circuit for magnetic disk device - Google Patents
Guard pattern detecting circuit for magnetic disk deviceInfo
- 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
Links
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
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.
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)
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 |
-
1987
- 1987-09-22 JP JP23764787A patent/JPS6479979A/en active Pending
Cited By (1)
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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