JPS6482305A - Signal reproducing circuit for magnetic disk device - Google Patents
Signal reproducing circuit for magnetic disk deviceInfo
- Publication number
- JPS6482305A JPS6482305A JP23965787A JP23965787A JPS6482305A JP S6482305 A JPS6482305 A JP S6482305A JP 23965787 A JP23965787 A JP 23965787A JP 23965787 A JP23965787 A JP 23965787A JP S6482305 A JPS6482305 A JP S6482305A
- Authority
- JP
- Japan
- Prior art keywords
- executing
- peripheral side
- circuit
- gain
- optimum
- 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
- Digital Magnetic Recording (AREA)
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To lower the error rate of a data by always executing an optimum equalization extending from the outside peripheral side of a disk to the inside peripheral side, and suppressing a peak shift to the minimum. CONSTITUTION:The titled circuit is provided with at least one or more delay elements 2, a resistance 1 for taking the matching between the delay element 2 and a signal line, and a cosine equalizing circuit constituted of a gain control circuit 3 whose gain is varied by an external control voltage, and a differential amplifying circuit 4. In this state, a value of the gain for executing an optimum equalization is set in advance at every cylinder, and at the time of executing a read-out operation, it is controlled so as to become a value aligned with the cylinder to be read out by a control signal. In such a way, by executing an optimum cosine equalization at all times extending from the outside peripheral side of a disk to the inside peripheral side, a peak shift is suppressed to the minimum. In such a way, an error rate of a data can be lowered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23965787A JPS6482305A (en) | 1987-09-24 | 1987-09-24 | Signal reproducing circuit for magnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23965787A JPS6482305A (en) | 1987-09-24 | 1987-09-24 | Signal reproducing circuit for magnetic disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6482305A true JPS6482305A (en) | 1989-03-28 |
Family
ID=17047961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23965787A Pending JPS6482305A (en) | 1987-09-24 | 1987-09-24 | Signal reproducing circuit for magnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6482305A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5266325B2 (en) * | 2008-08-18 | 2013-08-21 | 日本電信電話株式会社 | Vector synthesis type phase shifter, optical transceiver and control circuit |
-
1987
- 1987-09-24 JP JP23965787A patent/JPS6482305A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5266325B2 (en) * | 2008-08-18 | 2013-08-21 | 日本電信電話株式会社 | Vector synthesis type phase shifter, optical transceiver and control circuit |
US8687968B2 (en) | 2008-08-18 | 2014-04-01 | Nippon Telegraph And Telephone Corporation | Vector sum phase shifter, optical transceiver, and control circuit |
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