JPS5712413A - Recording and reproducing system of pilot signal - Google Patents
Recording and reproducing system of pilot signalInfo
- Publication number
- JPS5712413A JPS5712413A JP8576580A JP8576580A JPS5712413A JP S5712413 A JPS5712413 A JP S5712413A JP 8576580 A JP8576580 A JP 8576580A JP 8576580 A JP8576580 A JP 8576580A JP S5712413 A JPS5712413 A JP S5712413A
- Authority
- JP
- Japan
- Prior art keywords
- pilot signals
- shift
- tracks
- frequencies
- track
- 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
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
PURPOSE:To preform a tracking in a simple and accurate way, by recording also the pilot signals of prescribed frequencies which are different with every prescribed period and then reproducing those pilot signals as the crosstalk from the adjacent tracks to detect a shift of tracks. CONSTITUTION:The pulse signals that are formed through a horizontal synchronous signal dividing circuit 3 plus dividers 5-8 with the repetitive frequencies equivalent to 1/2, 1/3, 1/5, 1/7, and the like of the horizontal scan frequency give a control to a gate circuit 10 via a switch 9 which is switched with every track forming period. The horizontal blanking period signals produced through a voltage control oscillator 15, a 1/16 divider 12, an LPF18, an FF13, a gate circuit 19 and others are applied to the circuit 10. Then the low frequency pilot signals of frequencies different with every track are also recorded in the horizontal blanking period via a mixer 20 and others. The pilot signals of the adjacent tracks are reproduced as the crosstalk to detect the shift of tracks in accordance with the difference of levels. Accordingly even a large track shift can be detected accurately without impairing the picture quality. Thus a simple and accurate tracking is possible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8576580A JPS5712413A (en) | 1980-06-24 | 1980-06-24 | Recording and reproducing system of pilot signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8576580A JPS5712413A (en) | 1980-06-24 | 1980-06-24 | Recording and reproducing system of pilot signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5712413A true JPS5712413A (en) | 1982-01-22 |
JPS6321248B2 JPS6321248B2 (en) | 1988-05-06 |
Family
ID=13867958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8576580A Granted JPS5712413A (en) | 1980-06-24 | 1980-06-24 | Recording and reproducing system of pilot signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5712413A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0089816A2 (en) * | 1982-03-18 | 1983-09-28 | Sony Corporation | Apparatus for controlling the tracking position of a head in an apparatus for recording or reproducing information |
EP0492889A2 (en) * | 1990-12-18 | 1992-07-01 | Pioneer Electronic Corporation | Crosstalk quantity detector |
JPH09501519A (en) * | 1993-06-17 | 1997-02-10 | ルールコーレ アクチエンゲゼルシヤフト | Process control method especially for large industrial plants |
-
1980
- 1980-06-24 JP JP8576580A patent/JPS5712413A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0089816A2 (en) * | 1982-03-18 | 1983-09-28 | Sony Corporation | Apparatus for controlling the tracking position of a head in an apparatus for recording or reproducing information |
EP0492889A2 (en) * | 1990-12-18 | 1992-07-01 | Pioneer Electronic Corporation | Crosstalk quantity detector |
JPH09501519A (en) * | 1993-06-17 | 1997-02-10 | ルールコーレ アクチエンゲゼルシヤフト | Process control method especially for large industrial plants |
Also Published As
Publication number | Publication date |
---|---|
JPS6321248B2 (en) | 1988-05-06 |
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