JPS6449150A - Servo circuit in recording and reproducing device - Google Patents

Servo circuit in recording and reproducing device

Info

Publication number
JPS6449150A
JPS6449150A JP62205046A JP20504687A JPS6449150A JP S6449150 A JPS6449150 A JP S6449150A JP 62205046 A JP62205046 A JP 62205046A JP 20504687 A JP20504687 A JP 20504687A JP S6449150 A JPS6449150 A JP S6449150A
Authority
JP
Japan
Prior art keywords
atf
tracking
frame
error voltage
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.)
Granted
Application number
JP62205046A
Other languages
Japanese (ja)
Other versions
JPH0626053B2 (en
Inventor
Kenichiro Kawasaki
Shozaburo Sakaguchi
Masafumi Nakamura
Yasuhei Nakama
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.)
Hitachi Ltd
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic 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 Hitachi Ltd, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP62205046A priority Critical patent/JPH0626053B2/en
Publication of JPS6449150A publication Critical patent/JPS6449150A/en
Publication of JPH0626053B2 publication Critical patent/JPH0626053B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To execute effective control at an optimum tracking error voltage by selecting only one area out of four auto-tracking areas in a frame at the time of even-times speed reproducing to obtain a tracking error voltage. CONSTITUTION:In case of tracking four tracks A, B in the even and odd frames of heads 1a, 1b at the time of even-times speed reproducing, the head 1a can reproduce only auto-tracking ATF signals ATF1, ATF2 on the track A of the even frame. Since a part of the ATF2 is lacking, a high level reproduced signal can be obtained only from the ATF1. On other hand, no ATF signal on the track B can be reproduced by the head 1b on the basis of the same reason. Thus, only one ATF area is selected out of four ATF areas in one frame and a proper tracking error voltage is obtained to attain optimum control.
JP62205046A 1987-08-20 1987-08-20 Servo circuit in recording / reproducing apparatus Expired - Lifetime JPH0626053B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205046A JPH0626053B2 (en) 1987-08-20 1987-08-20 Servo circuit in recording / reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205046A JPH0626053B2 (en) 1987-08-20 1987-08-20 Servo circuit in recording / reproducing apparatus

Publications (2)

Publication Number Publication Date
JPS6449150A true JPS6449150A (en) 1989-02-23
JPH0626053B2 JPH0626053B2 (en) 1994-04-06

Family

ID=16500551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205046A Expired - Lifetime JPH0626053B2 (en) 1987-08-20 1987-08-20 Servo circuit in recording / reproducing apparatus

Country Status (1)

Country Link
JP (1) JPH0626053B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60253050A (en) * 1984-05-30 1985-12-13 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60253050A (en) * 1984-05-30 1985-12-13 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device

Also Published As

Publication number Publication date
JPH0626053B2 (en) 1994-04-06

Similar Documents

Publication Publication Date Title
EP0286412A3 (en) Apparatus for recording and/or reproducing digital data
DE3364235D1 (en) Magnetic recording/reproducing apparatus
EP0054419A3 (en) Tracking control arrangements for magnetic recording and reproducing devices
EP0359019A3 (en) Tracking control circuit of herical scanning magnetic tape apparatus
EP0276990A3 (en) Apparatus for reproducing a digital signal
JPS6449150A (en) Servo circuit in recording and reproducing device
GB1478339A (en) Multiple track record replay
JPS57145485A (en) Reproducer of video signal
JPS5668923A (en) Tracking device of magnetic reproducing device
JPH0738713B2 (en) Playback device
KR860007628A (en) Record Mode Discrimination Switching Method
JPS5562506A (en) Video tape recorder
JPS5256906A (en) Tracking control signal recording and reproduction system in magnetic recording and playback apparatus
JPS576459A (en) Magnetic recording and reproducing device
JPS6469177A (en) Video signal reproducing device
JPS54105508A (en) Magnetic recorder-reproducer
JPS55163627A (en) Information recorder/reproducer
JPS6469176A (en) Video signal reproducing device
JPS55150129A (en) Magnetic recording and reproducing device
JPS5552534A (en) Magnetic recording and reproducing device
JPS53110812A (en) Magnetic recording/reproducing method for video signal
JPS5474406A (en) Tracking controller for rotary head magnetic video reproducer
JPS6450215A (en) Circuit for detecting stain of tape recorder head
EP0289984A3 (en) Recording apparatus with tracking control
JPS6435726A (en) Data recording method