JPS57176576A - Disc shape information recording medium and its reproducer - Google Patents

Disc shape information recording medium and its reproducer

Info

Publication number
JPS57176576A
JPS57176576A JP5943881A JP5943881A JPS57176576A JP S57176576 A JPS57176576 A JP S57176576A JP 5943881 A JP5943881 A JP 5943881A JP 5943881 A JP5943881 A JP 5943881A JP S57176576 A JPS57176576 A JP S57176576A
Authority
JP
Japan
Prior art keywords
track
recorded
tracks
reproducer
reproducing
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
JP5943881A
Other languages
Japanese (ja)
Inventor
Ryozo Abe
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 JP5943881A priority Critical patent/JPS57176576A/en
Publication of JPS57176576A publication Critical patent/JPS57176576A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE:To obtain reproduction with a simple circuit, by taking at least two types of main information signal tracks and tracking control reference signal tracks having different frequencies in parallel as one set, and forming the plurality of tracks in spiral. CONSTITUTION:Main information signal tracks 31 and 32 are recorded, a tracking signal fp1 track 4 is recorded at the outer circumference of the track 31, and a tracking signal fp2 track 5 is recorded at the inner circumference of the track 31. Further, a track 5 is recorded at the outer circumference of the track 32 and a track 4 is recorded at the inner circumference of the track 32. In reproducing the track 31, a switching voltage is applied to a terminal 22 and a moving contact piece of a switch circuit 24 is connected to a position indicated with solid lines. Further, in reproducing the track 32, a moving contact piece of a circuit 14 is connected to a position indicated in brocken lines. Thus, the relation of left and right of the signals fp1 and fp2 to a differetial amplifier 19 is kept constant for stable reproducing operation.
JP5943881A 1981-04-20 1981-04-20 Disc shape information recording medium and its reproducer Pending JPS57176576A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5943881A JPS57176576A (en) 1981-04-20 1981-04-20 Disc shape information recording medium and its reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5943881A JPS57176576A (en) 1981-04-20 1981-04-20 Disc shape information recording medium and its reproducer

Publications (1)

Publication Number Publication Date
JPS57176576A true JPS57176576A (en) 1982-10-29

Family

ID=13113275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5943881A Pending JPS57176576A (en) 1981-04-20 1981-04-20 Disc shape information recording medium and its reproducer

Country Status (1)

Country Link
JP (1) JPS57176576A (en)

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