JPS57103109A - Centering device for recording track of recording disk - Google Patents

Centering device for recording track of recording disk

Info

Publication number
JPS57103109A
JPS57103109A JP17997480A JP17997480A JPS57103109A JP S57103109 A JPS57103109 A JP S57103109A JP 17997480 A JP17997480 A JP 17997480A JP 17997480 A JP17997480 A JP 17997480A JP S57103109 A JPS57103109 A JP S57103109A
Authority
JP
Japan
Prior art keywords
recording
disk
track
reflected light
accordance
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
JP17997480A
Other languages
Japanese (ja)
Other versions
JPS6349281B2 (en
Inventor
Takashi Nishio
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.)
YUNIBAASARU PAIONIA KK
Pioneer Video Corp
Universal Pioneer Corp
Original Assignee
YUNIBAASARU PAIONIA KK
Pioneer Video Corp
Universal Pioneer 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 YUNIBAASARU PAIONIA KK, Pioneer Video Corp, Universal Pioneer Corp filed Critical YUNIBAASARU PAIONIA KK
Priority to JP17997480A priority Critical patent/JPS57103109A/en
Publication of JPS57103109A publication Critical patent/JPS57103109A/en
Publication of JPS6349281B2 publication Critical patent/JPS6349281B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means

Abstract

PURPOSE:To achieve positioning of a center of a recording track by irradiating points on the circumference of the innermost circumferential circle of a recording track with light, and moving a recording disk in accordance with the quantity of reflected light. CONSTITUTION:A disk mounting table 11 on which a recording disk 2 is mounted is movable as shown by arrows X and Y independently by carriage motors 3 and 4. Four points where two parallel diameter lines cross the innermost circumference in the directions X and Y are irradiated with laser beam bundles (a)-(d) from an unshown light source at right angles to the disk surface. The reflected light beams of said beam bundles (a)-(d) are made incident to photodetecting elements 6-9, which are so arranged that reflected light beams having constant reflection angles by a diffraction grating formed by recording tracks are photodetected. In accordance with a difference in the quantity of a relfected light, the carriage motor 4 is driven and when the track center point of the disk is found, a center hole is bored by a working drill.
JP17997480A 1980-12-19 1980-12-19 Centering device for recording track of recording disk Granted JPS57103109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17997480A JPS57103109A (en) 1980-12-19 1980-12-19 Centering device for recording track of recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17997480A JPS57103109A (en) 1980-12-19 1980-12-19 Centering device for recording track of recording disk

Publications (2)

Publication Number Publication Date
JPS57103109A true JPS57103109A (en) 1982-06-26
JPS6349281B2 JPS6349281B2 (en) 1988-10-04

Family

ID=16075230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17997480A Granted JPS57103109A (en) 1980-12-19 1980-12-19 Centering device for recording track of recording disk

Country Status (1)

Country Link
JP (1) JPS57103109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761776A (en) * 1985-12-11 1988-08-02 U.S. Philips Corporation Device for determining a centring error of an optical disc relative to the axis of rotation of a turntable supporting the disc
JPH0416684U (en) * 1990-03-22 1992-02-12

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153506A (en) * 1980-03-31 1981-11-27 Polygram Gmbh Centering unit for providing central hole on disk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153506A (en) * 1980-03-31 1981-11-27 Polygram Gmbh Centering unit for providing central hole on disk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761776A (en) * 1985-12-11 1988-08-02 U.S. Philips Corporation Device for determining a centring error of an optical disc relative to the axis of rotation of a turntable supporting the disc
JPH0416684U (en) * 1990-03-22 1992-02-12

Also Published As

Publication number Publication date
JPS6349281B2 (en) 1988-10-04

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