ES469323A1 - Un tocadiscos perfeccionado - Google Patents

Un tocadiscos perfeccionado

Info

Publication number
ES469323A1
ES469323A1 ES469323A ES469323A ES469323A1 ES 469323 A1 ES469323 A1 ES 469323A1 ES 469323 A ES469323 A ES 469323A ES 469323 A ES469323 A ES 469323A ES 469323 A1 ES469323 A1 ES 469323A1
Authority
ES
Spain
Prior art keywords
turntable
pickup
arm
motor
pivoting
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.)
Expired
Application number
ES469323A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES469323A1 publication Critical patent/ES469323A1/es
Expired 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
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08516—Control of drive of the head for pivoting pick-up arms using magnetic detecting means

Landscapes

  • Rotational Drive Of Disk (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Amplifiers (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

Un tocadiscos perfeccionado, que comprende, montados en un chasis, un plato giradiscos, un brazo del fonocaptor pivotable, cuyo brazo lleva una cápsula o cartucho provisto de una aguja del fonocaptor, un apoyo de brazo fijo, un motor eléctrico para accionamiento del plato giradiscos, dependiendo la alimentación de energía eléctrica a dicho motor de medios de control que están constituidos por un interruptor de parada del motor, un generador de campo magnético asociado con un elemento detector de efecto Hall, los cuales son movibles relativamente entre sí simultáneamente con el movimiento de pivotamiento del brazo del fonocaptor, accionando la señal de salida suministrada por el elemento Hall al interruptor de parada, a través de un circuito de control que comprende un diferenciador, a una velocidad de pivotamiento del brazo que corresponde a que la aguja del fonocaptor explore la zona que sigue después del área de registro del disco, estando caracterizado dicho tocadiscos porque hay también dispuesto un generador de campo magnético a modo que induzca en dicho elemento Hall una señal de puesta en marcha que está en relación con la posición del brazo del fonocaptor que ha sido movido desde su apoyo, comprendiendo además el circuito de control un interruptor de puesta en marcha del motor que es sensible a dicha señal de puesta en marcha.
ES469323A 1977-05-02 1978-04-29 Un tocadiscos perfeccionado Expired ES469323A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7713213A FR2389965B1 (es) 1977-05-02 1977-05-02

Publications (1)

Publication Number Publication Date
ES469323A1 true ES469323A1 (es) 1979-01-16

Family

ID=9190198

Family Applications (1)

Application Number Title Priority Date Filing Date
ES469323A Expired ES469323A1 (es) 1977-05-02 1978-04-29 Un tocadiscos perfeccionado

Country Status (6)

Country Link
JP (1) JPS53150107U (es)
DE (1) DE2817311A1 (es)
ES (1) ES469323A1 (es)
FR (1) FR2389965B1 (es)
GB (1) GB1589646A (es)
IT (1) IT1095263B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2108703A1 (en) * 1992-12-23 1994-06-24 David W. Richard Magnetic disk drive unit

Also Published As

Publication number Publication date
FR2389965A1 (es) 1978-12-01
FR2389965B1 (es) 1980-08-14
DE2817311A1 (de) 1978-11-16
JPS53150107U (es) 1978-11-27
GB1589646A (en) 1981-05-20
IT1095263B (it) 1985-08-10
IT7822861A0 (it) 1978-04-28

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19851221