JPS57198566A - Tracking controller of magnetic recording and reproducing device - Google Patents

Tracking controller of magnetic recording and reproducing device

Info

Publication number
JPS57198566A
JPS57198566A JP56082662A JP8266281A JPS57198566A JP S57198566 A JPS57198566 A JP S57198566A JP 56082662 A JP56082662 A JP 56082662A JP 8266281 A JP8266281 A JP 8266281A JP S57198566 A JPS57198566 A JP S57198566A
Authority
JP
Japan
Prior art keywords
reproduction
tracking
phase difference
heads
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.)
Pending
Application number
JP56082662A
Other languages
Japanese (ja)
Inventor
Ryusuke Moriya
Takeo Eguchi
Takeo Oba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP56082662A priority Critical patent/JPS57198566A/en
Publication of JPS57198566A publication Critical patent/JPS57198566A/en
Pending legal-status Critical Current

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  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE: To improve the precision of tracking easily by performing recording to and reproduction from a magnetic tape simultaneously through heads having different azimuth angles, detecting a phase difference during the reproduction, and thus correcting a tracking error.
CONSTITUTION: A bimorph plate 3 which has ahead two magnetic heads 1A and 1B, differing in azimuth angle, rotate at a constant speed in the opposite direction to a running tape 2. On the tape 2, the heads 1A and 1B form two slanting recording tracks TRa and TRb closely in parallel in every field. If there is a tracking error (h) during the reproduction of those two tracks, the output of one head 1A or 1B has delay d=htanθ, generating a phase difference 2d. The phase difference of a block synchronizing signal present at intervals obtained by dividing one horizontal scanning period 1H by 2W3 is detected to correct the tracking error. Thus, the precision of tracking is improved.
COPYRIGHT: (C)1982,JPO&Japio
JP56082662A 1981-05-30 1981-05-30 Tracking controller of magnetic recording and reproducing device Pending JPS57198566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56082662A JPS57198566A (en) 1981-05-30 1981-05-30 Tracking controller of magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56082662A JPS57198566A (en) 1981-05-30 1981-05-30 Tracking controller of magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS57198566A true JPS57198566A (en) 1982-12-06

Family

ID=13780641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56082662A Pending JPS57198566A (en) 1981-05-30 1981-05-30 Tracking controller of magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS57198566A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642707A (en) * 1983-02-18 1987-02-10 Deutsche Thomson-Brandt Gmbh Magnetic tape video recorder with a one head drum
US4868692A (en) * 1987-03-31 1989-09-19 Matsushita Electric Industrial Co., Ltd. Tracking error signal forming circuit
JPH02126458A (en) * 1988-11-04 1990-05-15 Matsushita Electric Ind Co Ltd Recording and reproducing device adjusting method
JPH02210613A (en) * 1989-02-09 1990-08-22 Matsushita Electric Ind Co Ltd Method for adjusting magnetic recording and reproducing device
JPH035947A (en) * 1989-06-02 1991-01-11 Matsushita Electric Ind Co Ltd Tracking adjusting method for magnetic recording and reproducing device
US5500775A (en) * 1992-10-15 1996-03-19 Hitachi, Ltd. Data recording and reproducing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642707A (en) * 1983-02-18 1987-02-10 Deutsche Thomson-Brandt Gmbh Magnetic tape video recorder with a one head drum
US4868692A (en) * 1987-03-31 1989-09-19 Matsushita Electric Industrial Co., Ltd. Tracking error signal forming circuit
JPH02126458A (en) * 1988-11-04 1990-05-15 Matsushita Electric Ind Co Ltd Recording and reproducing device adjusting method
JPH02210613A (en) * 1989-02-09 1990-08-22 Matsushita Electric Ind Co Ltd Method for adjusting magnetic recording and reproducing device
JPH035947A (en) * 1989-06-02 1991-01-11 Matsushita Electric Ind Co Ltd Tracking adjusting method for magnetic recording and reproducing device
US5500775A (en) * 1992-10-15 1996-03-19 Hitachi, Ltd. Data recording and reproducing apparatus

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