JPS55157126A - Automatic tracking unit - Google Patents
Automatic tracking unitInfo
- Publication number
- JPS55157126A JPS55157126A JP6280179A JP6280179A JPS55157126A JP S55157126 A JPS55157126 A JP S55157126A JP 6280179 A JP6280179 A JP 6280179A JP 6280179 A JP6280179 A JP 6280179A JP S55157126 A JPS55157126 A JP S55157126A
- Authority
- JP
- Japan
- Prior art keywords
- output
- head
- automatic tracking
- circuit
- detected
- 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
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
PURPOSE: To perform stable automatic tracking with a simple additional circuit, by stopping applying a periodical voltage waveform when the reproduced signal level becomes a prescribed value or less.
CONSTITUTION: Output deciding circuit 27 is connected to the output end of detector 21; and when the output becomes lower than a fixed value or zero, a pulse of a fixed width is generated, and stopping circuit 28 connected in series to the output of intrinsic waveform generating circuit 26 is driven by the signal to make the fixed waveform zero. consequently, even if reproducing head 19 comes to the worst position, the head scanning locus becomes as shown by 30, and the head output amplitude is detected at both ends of the recording track, so that the head position can be detected and can be controlled. As a result stable automatic tracking is performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6280179A JPS55157126A (en) | 1979-05-22 | 1979-05-22 | Automatic tracking unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6280179A JPS55157126A (en) | 1979-05-22 | 1979-05-22 | Automatic tracking unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55157126A true JPS55157126A (en) | 1980-12-06 |
JPS6161167B2 JPS6161167B2 (en) | 1986-12-24 |
Family
ID=13210798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6280179A Granted JPS55157126A (en) | 1979-05-22 | 1979-05-22 | Automatic tracking unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55157126A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6269819U (en) * | 1985-10-23 | 1987-05-01 |
-
1979
- 1979-05-22 JP JP6280179A patent/JPS55157126A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6269819U (en) * | 1985-10-23 | 1987-05-01 |
Also Published As
Publication number | Publication date |
---|---|
JPS6161167B2 (en) | 1986-12-24 |
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