JPS55139665A - Detector for performance end of record player - Google Patents

Detector for performance end of record player

Info

Publication number
JPS55139665A
JPS55139665A JP4623279A JP4623279A JPS55139665A JP S55139665 A JPS55139665 A JP S55139665A JP 4623279 A JP4623279 A JP 4623279A JP 4623279 A JP4623279 A JP 4623279A JP S55139665 A JPS55139665 A JP S55139665A
Authority
JP
Japan
Prior art keywords
fixed
coil
magnet
traveling member
tone arm
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
JP4623279A
Other languages
Japanese (ja)
Inventor
Takashi Kikuchi
Tsuneo Ishii
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 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 Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP4623279A priority Critical patent/JPS55139665A/en
Publication of JPS55139665A publication Critical patent/JPS55139665A/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
    • 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
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/095—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers for repeating a part of the record; for beginning or stopping at a desired point of the record
    • G11B3/0952—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers for repeating a part of the record; for beginning or stopping at a desired point of the record using automatic means

Landscapes

  • Moving Of Heads (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE:To make secure detection possible by using as a play end detection signal the output of the comparing method of detecting the moving speed of the traveling member of a linear motor and of generating the output only when the signal output exceeds a fixed reference signal. CONSTITUTION:Arm holder 2 of tone arm 1 is supported on traveling member 4, which is movable on a couple of guard rails 5a and 5b via rollers 6 and 7. To the lower end of traveling member 4, magnet 8 of the moving element of a linear motor is fitted and to base 10, coil 9 as a stator is fixed. When a current of a fixed value in a fixed direction is supplied to coil 9, power is generated between magnet 8 and the opposite coil part to drive magnet 8 in the fixed horizontal direction, so that tone arm 1 will perform tracking operation in a horizontal plane. Coil 9 is supplied with a current corresponding to the displacement angle of tone arm 1 following up a sound groove accompanying the rotation of a record.
JP4623279A 1979-04-16 1979-04-16 Detector for performance end of record player Pending JPS55139665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4623279A JPS55139665A (en) 1979-04-16 1979-04-16 Detector for performance end of record player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4623279A JPS55139665A (en) 1979-04-16 1979-04-16 Detector for performance end of record player

Publications (1)

Publication Number Publication Date
JPS55139665A true JPS55139665A (en) 1980-10-31

Family

ID=12741361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4623279A Pending JPS55139665A (en) 1979-04-16 1979-04-16 Detector for performance end of record player

Country Status (1)

Country Link
JP (1) JPS55139665A (en)

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