JPS5647901A - Linear tracking arm device - Google Patents
Linear tracking arm deviceInfo
- Publication number
- JPS5647901A JPS5647901A JP12462179A JP12462179A JPS5647901A JP S5647901 A JPS5647901 A JP S5647901A JP 12462179 A JP12462179 A JP 12462179A JP 12462179 A JP12462179 A JP 12462179A JP S5647901 A JPS5647901 A JP S5647901A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- wow
- driving coil
- eccentric
- magnet plates
- 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
Abstract
PURPOSE: To reduce a wow and the worsening of an SN ratio due to vibration, by providing an eccentric-wow correcting method in addition to an electromagnetic position control method that holds one part of an arm at a prescribed position perpendicular to a record surface or in the connection direction of its groove and the arm at a position at right angles to a tracking direction.
CONSTITUTION: Arm 4 is fitted with driving coils 5 and 6 sandwiched in between a couple of magnet plates 21, driving coil 9 sandwiched in between magnet plates 23, magnetic body 26, and driving coil 11 forming a linear motor together with magnet plates. fitting plates 5a and 6a of driving coils 5 and 6 are fitted with Hall elements 7a and 8a to hold arm 4 at a fixed position in the vertical direction. The x-directional position is controlled through light source 33 provided to driving coil 11 and the photoelectric potentiometer. Through Hall element 10a provided in the center of driving coil 9, the position in the length direction of the arm and an eccentric wow are corrected. Thus, the worsening of the SN ratio and eccentric wow can be compensated.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12462179A JPS5647901A (en) | 1979-09-26 | 1979-09-26 | Linear tracking arm device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12462179A JPS5647901A (en) | 1979-09-26 | 1979-09-26 | Linear tracking arm device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5647901A true JPS5647901A (en) | 1981-04-30 |
Family
ID=14889944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12462179A Pending JPS5647901A (en) | 1979-09-26 | 1979-09-26 | Linear tracking arm device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647901A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10360938B2 (en) * | 2015-02-25 | 2019-07-23 | Koolance, Inc. | Apparatus, methods, and systems for controlling tonearm tracking for a record turntable |
-
1979
- 1979-09-26 JP JP12462179A patent/JPS5647901A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10360938B2 (en) * | 2015-02-25 | 2019-07-23 | Koolance, Inc. | Apparatus, methods, and systems for controlling tonearm tracking for a record turntable |
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