JPS56101623A - Autotracking system - Google Patents
Autotracking systemInfo
- Publication number
- JPS56101623A JPS56101623A JP429880A JP429880A JPS56101623A JP S56101623 A JPS56101623 A JP S56101623A JP 429880 A JP429880 A JP 429880A JP 429880 A JP429880 A JP 429880A JP S56101623 A JPS56101623 A JP S56101623A
- Authority
- JP
- Japan
- Prior art keywords
- mixer
- inputted
- output
- reproducing head
- tracking
- 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
- 230000010363 phase shift 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)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE:To correct tracking automatically by slantingly fixing a tracking detecting head of track width greater than that of a reproducing head to the reproducing head and by detecting as a tracking differential signal a phase shift between reproduced signals of both the heads. CONSTITUTION:A tracking detecting head with track width greater than that of a reproducing head is fixed to the reproducing head slantingly. The reproduction output of reproducing head 2 is passed through voltage amplifier 13 to obtain reproduced signal 15, which is also inputted to mixers 20 and 21 via LPD14. The reproduction output of detecting head 4 is inputted to mixers 20 and 21 via voltage amplifier 16, phase inverter 17, and delay devices 18 and 19. Both delay devices 18 and 19 differ in delay time. The output of mixer 20 is inputted to mixer 25 via wave detector 22 and inverter 23, and the output of mixer 21 is inputted to mixer 25 via wave detector 24. The output of mixer 25 is passed through current amplifier 26, switch circuit 27 and DM motor 9 to correct tracking automatically.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP429880A JPS56101623A (en) | 1980-01-18 | 1980-01-18 | Autotracking system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP429880A JPS56101623A (en) | 1980-01-18 | 1980-01-18 | Autotracking system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56101623A true JPS56101623A (en) | 1981-08-14 |
Family
ID=11580600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP429880A Pending JPS56101623A (en) | 1980-01-18 | 1980-01-18 | Autotracking system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56101623A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5180213A (en) * | 1975-01-10 | 1976-07-13 | Tokyo Shibaura Electric Co | |
JPS54143216A (en) * | 1978-04-28 | 1979-11-08 | Toshiba Corp | Magnetic recorder-reproducer |
-
1980
- 1980-01-18 JP JP429880A patent/JPS56101623A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5180213A (en) * | 1975-01-10 | 1976-07-13 | Tokyo Shibaura Electric Co | |
JPS54143216A (en) * | 1978-04-28 | 1979-11-08 | Toshiba Corp | Magnetic recorder-reproducer |
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