JPS5750344A - Disk-shaped information recording medium - Google Patents

Disk-shaped information recording medium

Info

Publication number
JPS5750344A
JPS5750344A JP12416780A JP12416780A JPS5750344A JP S5750344 A JPS5750344 A JP S5750344A JP 12416780 A JP12416780 A JP 12416780A JP 12416780 A JP12416780 A JP 12416780A JP S5750344 A JPS5750344 A JP S5750344A
Authority
JP
Japan
Prior art keywords
signal
track pattern
disk
shifted
replacement
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
JP12416780A
Other languages
Japanese (ja)
Other versions
JPS6042530B2 (en
Inventor
Kazuo Tatsuguchi
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP12416780A priority Critical patent/JPS6042530B2/en
Publication of JPS5750344A publication Critical patent/JPS5750344A/en
Publication of JPS6042530B2 publication Critical patent/JPS6042530B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE:To realize the high-speed transfer of a reproduced element to a desired place, by recording the 1st and 2nd reference signal patterns for tracking control of an optical disk so that they are replaced with each other plural times within a track pattern and securing a specific signal pattern part at the area of replacement. CONSTITUTION:The patterns of tracking control reference signals fp1 and fp2 of an optical disk 10 turning toward an arrow mark X1 are replaced with each other plural times, e.g. four times like 11a-11e within a track pattern of an information signal 2. For the area of replacement, the signals fp1 and fp2 are made to exist simultaneously at only one of both sides of the signal 2 alternately based on the switching lines of lines 3a-1-3d-1 inclined by a prescribed angle theta in the direction opposite to the rotating direction X1 toward the radius of the disk 10 and at four areas 3a-3d excepting the 3rd reference signal (index signal) fp3. As a result, a reproduced element is shifted to the next track pattern. Thus the element can be shifted to a desired reading position with every track pattern and in a speed higher than the conventional speed.
JP12416780A 1980-09-08 1980-09-08 Disc-shaped information recording medium Expired JPS6042530B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12416780A JPS6042530B2 (en) 1980-09-08 1980-09-08 Disc-shaped information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12416780A JPS6042530B2 (en) 1980-09-08 1980-09-08 Disc-shaped information recording medium

Publications (2)

Publication Number Publication Date
JPS5750344A true JPS5750344A (en) 1982-03-24
JPS6042530B2 JPS6042530B2 (en) 1985-09-24

Family

ID=14878599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12416780A Expired JPS6042530B2 (en) 1980-09-08 1980-09-08 Disc-shaped information recording medium

Country Status (1)

Country Link
JP (1) JPS6042530B2 (en)

Also Published As

Publication number Publication date
JPS6042530B2 (en) 1985-09-24

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