JPS5764369A - Derivation groove detecting circuit of record player - Google Patents

Derivation groove detecting circuit of record player

Info

Publication number
JPS5764369A
JPS5764369A JP13661380A JP13661380A JPS5764369A JP S5764369 A JPS5764369 A JP S5764369A JP 13661380 A JP13661380 A JP 13661380A JP 13661380 A JP13661380 A JP 13661380A JP S5764369 A JPS5764369 A JP S5764369A
Authority
JP
Japan
Prior art keywords
signal
comparator
groove detecting
derivation groove
speed detector
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
JP13661380A
Other languages
Japanese (ja)
Inventor
Yoshihisa Hirota
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP13661380A priority Critical patent/JPS5764369A/en
Publication of JPS5764369A publication Critical patent/JPS5764369A/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
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • G11B21/06—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw the record carrier having mechanical means to ensure traverse movement of the head, e.g. grooves

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To prevent a malfunction caused by eccentricity, by generating a derivation groove detecting signal when an output of a comparator for comparing a detected turning or moving speed signal of a tone arm, and a reference level signal. CONSTITUTION:A turning or moving speed of a tone arm is outputted from a speed detector 1 and is inputted to one terminal of a comparator 2. A reference value set by a reference level setting circuit 3 is inputted to the other terminal of the comparator 2, is compared with a level of the speed detector 1, and when the level of the speed detector 1 is larger, the comparator 2 generates an output signal, and inputs it to a controller 4. The controller 4 outputs a derivation groove detecting signal when the signal from the comparator 2 has reached a prescribed time. In this way, even if there is eccentricity in a record, no psudo signal is generated and the malfunction is prevented.
JP13661380A 1980-09-30 1980-09-30 Derivation groove detecting circuit of record player Pending JPS5764369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13661380A JPS5764369A (en) 1980-09-30 1980-09-30 Derivation groove detecting circuit of record player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13661380A JPS5764369A (en) 1980-09-30 1980-09-30 Derivation groove detecting circuit of record player

Publications (1)

Publication Number Publication Date
JPS5764369A true JPS5764369A (en) 1982-04-19

Family

ID=15179389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13661380A Pending JPS5764369A (en) 1980-09-30 1980-09-30 Derivation groove detecting circuit of record player

Country Status (1)

Country Link
JP (1) JPS5764369A (en)

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