JPS6449150A - Servo circuit in recording and reproducing device - Google Patents
Servo circuit in recording and reproducing deviceInfo
- Publication number
- JPS6449150A JPS6449150A JP62205046A JP20504687A JPS6449150A JP S6449150 A JPS6449150 A JP S6449150A JP 62205046 A JP62205046 A JP 62205046A JP 20504687 A JP20504687 A JP 20504687A JP S6449150 A JPS6449150 A JP S6449150A
- Authority
- JP
- Japan
- Prior art keywords
- atf
- tracking
- frame
- error voltage
- tracking error
- 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.)
- Granted
Links
Abstract
PURPOSE:To execute effective control at an optimum tracking error voltage by selecting only one area out of four auto-tracking areas in a frame at the time of even-times speed reproducing to obtain a tracking error voltage. CONSTITUTION:In case of tracking four tracks A, B in the even and odd frames of heads 1a, 1b at the time of even-times speed reproducing, the head 1a can reproduce only auto-tracking ATF signals ATF1, ATF2 on the track A of the even frame. Since a part of the ATF2 is lacking, a high level reproduced signal can be obtained only from the ATF1. On other hand, no ATF signal on the track B can be reproduced by the head 1b on the basis of the same reason. Thus, only one ATF area is selected out of four ATF areas in one frame and a proper tracking error voltage is obtained to attain optimum control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205046A JPH0626053B2 (en) | 1987-08-20 | 1987-08-20 | Servo circuit in recording / reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205046A JPH0626053B2 (en) | 1987-08-20 | 1987-08-20 | Servo circuit in recording / reproducing apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449150A true JPS6449150A (en) | 1989-02-23 |
JPH0626053B2 JPH0626053B2 (en) | 1994-04-06 |
Family
ID=16500551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62205046A Expired - Lifetime JPH0626053B2 (en) | 1987-08-20 | 1987-08-20 | Servo circuit in recording / reproducing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0626053B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60253050A (en) * | 1984-05-30 | 1985-12-13 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
-
1987
- 1987-08-20 JP JP62205046A patent/JPH0626053B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60253050A (en) * | 1984-05-30 | 1985-12-13 | Matsushita Electric Ind Co Ltd | Magnetic recording and reproducing device |
Also Published As
Publication number | Publication date |
---|---|
JPH0626053B2 (en) | 1994-04-06 |
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