[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS55157126A - Automatic tracking unit - Google Patents

Automatic tracking unit

Info

Publication number
JPS55157126A
JPS55157126A JP6280179A JP6280179A JPS55157126A JP S55157126 A JPS55157126 A JP S55157126A JP 6280179 A JP6280179 A JP 6280179A JP 6280179 A JP6280179 A JP 6280179A JP S55157126 A JPS55157126 A JP S55157126A
Authority
JP
Japan
Prior art keywords
output
head
automatic tracking
circuit
detected
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
JP6280179A
Other languages
Japanese (ja)
Other versions
JPS6161167B2 (en
Inventor
Ryuhei Nakabe
Norihiko Miyawaki
Hironori Arima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6280179A priority Critical patent/JPS55157126A/en
Publication of JPS55157126A publication Critical patent/JPS55157126A/en
Publication of JPS6161167B2 publication Critical patent/JPS6161167B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE: To perform stable automatic tracking with a simple additional circuit, by stopping applying a periodical voltage waveform when the reproduced signal level becomes a prescribed value or less.
CONSTITUTION: Output deciding circuit 27 is connected to the output end of detector 21; and when the output becomes lower than a fixed value or zero, a pulse of a fixed width is generated, and stopping circuit 28 connected in series to the output of intrinsic waveform generating circuit 26 is driven by the signal to make the fixed waveform zero. consequently, even if reproducing head 19 comes to the worst position, the head scanning locus becomes as shown by 30, and the head output amplitude is detected at both ends of the recording track, so that the head position can be detected and can be controlled. As a result stable automatic tracking is performed.
COPYRIGHT: (C)1980,JPO&Japio
JP6280179A 1979-05-22 1979-05-22 Automatic tracking unit Granted JPS55157126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6280179A JPS55157126A (en) 1979-05-22 1979-05-22 Automatic tracking unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6280179A JPS55157126A (en) 1979-05-22 1979-05-22 Automatic tracking unit

Publications (2)

Publication Number Publication Date
JPS55157126A true JPS55157126A (en) 1980-12-06
JPS6161167B2 JPS6161167B2 (en) 1986-12-24

Family

ID=13210798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6280179A Granted JPS55157126A (en) 1979-05-22 1979-05-22 Automatic tracking unit

Country Status (1)

Country Link
JP (1) JPS55157126A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6269819U (en) * 1985-10-23 1987-05-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6269819U (en) * 1985-10-23 1987-05-01

Also Published As

Publication number Publication date
JPS6161167B2 (en) 1986-12-24

Similar Documents

Publication Publication Date Title
JPS5671855A (en) Playback device of disc
JPS5764371A (en) Rotation control system of disk recording medium
CA2073323A1 (en) Optical recording medium driving apparatus capable of accurately detecting position of optical head
JPS5496006A (en) Magnetic recording-reproducing system
JPS54128313A (en) Magnetic recorder-reproducer capable of automatic setting of proper bias amount
JPS55157126A (en) Automatic tracking unit
JPS5744233A (en) Recorder and reproducer of digital signal
JPS5345509A (en) Automatic tracking apparatus
JPS5570915A (en) Detection method for optimum recording bias for magnetic recording and reproducing unit
JPS5736439A (en) Information signal recorder
JPS5724004A (en) Bias control device
JPS6421751A (en) Disk device
JPS55157127A (en) Automatic tracking unit
JPS54155007A (en) Information recorder
JPS57181432A (en) Optical type disc reproducer
EP0458975A4 (en) Optical recording apparatus
JPS6423426A (en) Optical medium recording device
JPS5613566A (en) Generating circuit for track-crossing pulse
JPS5525872A (en) Magnetic recording regenerator
JPS5552529A (en) Magnetic recording and reproducing device
JPS54131910A (en) Servo signal system of magnetic recorder
JPS648513A (en) Optical disk signal reproducing system
JPS5589920A (en) Duplicated recording prevention unit in optical recording and reproducing unit
JPS6410409A (en) Magnetic recording and reproducing device
JPS5548817A (en) Detection method of optimum recording bias for magnetic recording and reproducing unit