JPS56145570A - Signal pickup device - Google Patents

Signal pickup device

Info

Publication number
JPS56145570A
JPS56145570A JP4900680A JP4900680A JPS56145570A JP S56145570 A JPS56145570 A JP S56145570A JP 4900680 A JP4900680 A JP 4900680A JP 4900680 A JP4900680 A JP 4900680A JP S56145570 A JPS56145570 A JP S56145570A
Authority
JP
Japan
Prior art keywords
reproducing
coil
detector
signal
drop
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
JP4900680A
Other languages
Japanese (ja)
Other versions
JPS6252383B2 (en
Inventor
Osamu Tajima
Atsumi Hirata
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
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP4900680A priority Critical patent/JPS56145570A/en
Publication of JPS56145570A publication Critical patent/JPS56145570A/en
Publication of JPS6252383B2 publication Critical patent/JPS6252383B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
    • G11B3/125—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by using electric or magnetic means

Abstract

PURPOSE:To shorten the time of drop-out, by providing a detector which detects drop-out of the reproducing signal at the reproducing time and a means which operates in accordance with the signal from said drop-out detector to supply a current to the coil. CONSTITUTION:Permanent magnet piece 9 fixed to pickup arm 7 and coil 6 for stylus ascending and descending separated from and opposed to this magnet piece 9 are provided. The device in composed of the stylus pressure giving means which gives stylus pressure to reproducing stylus 4 by current supply to coil 6, detector 30 which detects drop-out of the reproducing signal at the reproducing time, Schmitt trigger circuit 32 which operates in accordance with the signal from dropout detector 30 to supply a current to coil 6 additionally, etc.
JP4900680A 1980-04-14 1980-04-14 Signal pickup device Granted JPS56145570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4900680A JPS56145570A (en) 1980-04-14 1980-04-14 Signal pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4900680A JPS56145570A (en) 1980-04-14 1980-04-14 Signal pickup device

Publications (2)

Publication Number Publication Date
JPS56145570A true JPS56145570A (en) 1981-11-12
JPS6252383B2 JPS6252383B2 (en) 1987-11-05

Family

ID=12819079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4900680A Granted JPS56145570A (en) 1980-04-14 1980-04-14 Signal pickup device

Country Status (1)

Country Link
JP (1) JPS56145570A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58199475A (en) * 1982-05-13 1983-11-19 Matsushita Electric Ind Co Ltd Signal pickup device
FR2543344A1 (en) * 1983-03-25 1984-09-28 Rca Corp VIDEO DRIVER HAVING A NEEDLE ELEVATOR DRIVE CIRCUIT
JPS6020073U (en) * 1983-07-16 1985-02-12 松下電器産業株式会社 Video disk player pick-up protection device
JPS61294676A (en) * 1985-06-20 1986-12-25 Matsushita Electric Ind Co Ltd Stylus pressure applying circuit for reproducing stylus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5054102U (en) * 1973-09-13 1975-05-23
JPS54104814A (en) * 1978-02-03 1979-08-17 Matsushita Electric Ind Co Ltd Magnetic disc recorder-reproducer
JPS56159801A (en) * 1980-04-10 1981-12-09 Rca Corp Recorder/reproducer system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5054102U (en) * 1973-09-13 1975-05-23
JPS54104814A (en) * 1978-02-03 1979-08-17 Matsushita Electric Ind Co Ltd Magnetic disc recorder-reproducer
JPS56159801A (en) * 1980-04-10 1981-12-09 Rca Corp Recorder/reproducer system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58199475A (en) * 1982-05-13 1983-11-19 Matsushita Electric Ind Co Ltd Signal pickup device
JPS6360472B2 (en) * 1982-05-13 1988-11-24
FR2543344A1 (en) * 1983-03-25 1984-09-28 Rca Corp VIDEO DRIVER HAVING A NEEDLE ELEVATOR DRIVE CIRCUIT
JPS6020073U (en) * 1983-07-16 1985-02-12 松下電器産業株式会社 Video disk player pick-up protection device
JPS61294676A (en) * 1985-06-20 1986-12-25 Matsushita Electric Ind Co Ltd Stylus pressure applying circuit for reproducing stylus

Also Published As

Publication number Publication date
JPS6252383B2 (en) 1987-11-05

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