JPS5674821A - Tracking control unit for magnetic tape device - Google Patents
Tracking control unit for magnetic tape deviceInfo
- Publication number
- JPS5674821A JPS5674821A JP15015279A JP15015279A JPS5674821A JP S5674821 A JPS5674821 A JP S5674821A JP 15015279 A JP15015279 A JP 15015279A JP 15015279 A JP15015279 A JP 15015279A JP S5674821 A JPS5674821 A JP S5674821A
- Authority
- JP
- Japan
- Prior art keywords
- head
- adjacent tracks
- track
- level
- constitution
- 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
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE: To ensure an accurate tracking even to the track having a small pitch, by reproducing the pilot signals of the adjacent tracks via the erasing head having a difference of level to the reproduction head and thus controlling the head position.
CONSTITUTION: Both the reproduction head 21 and the erasing head 28 are provided with a difference of level set, and the head 28 reproduces also the multiplex signal of the voice signal and the pilot signal formed by the voice signal carrier waves of different frequencies with every track of the adjacent tracks. Then the pilot signals of the adjacent tracks are isolated through the BPF31b, and the DC detection output according to the reproduced pilot signal level is produced by the envelope circuit 34 or the like to be processed by the comparator 36. Thus the positions of both the heads 28 and 21 receive a feedback control. In such constitution, an accurate tracking is performed regardless of a small track pitch and a large recording density.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15015279A JPS5674821A (en) | 1979-11-20 | 1979-11-20 | Tracking control unit for magnetic tape device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15015279A JPS5674821A (en) | 1979-11-20 | 1979-11-20 | Tracking control unit for magnetic tape device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5674821A true JPS5674821A (en) | 1981-06-20 |
Family
ID=15490629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15015279A Pending JPS5674821A (en) | 1979-11-20 | 1979-11-20 | Tracking control unit for magnetic tape device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5674821A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6135080A (en) * | 1984-07-27 | 1986-02-19 | Hitachi Ltd | Tracking control system of vtr |
-
1979
- 1979-11-20 JP JP15015279A patent/JPS5674821A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6135080A (en) * | 1984-07-27 | 1986-02-19 | Hitachi Ltd | Tracking control system of vtr |
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