ES485997A1 - IMPROVEMENTS IN ROLL JUMPING DEVICES FOR A VIDEO DISC DEVICE - Google Patents

IMPROVEMENTS IN ROLL JUMPING DEVICES FOR A VIDEO DISC DEVICE

Info

Publication number
ES485997A1
ES485997A1 ES485997A ES485997A ES485997A1 ES 485997 A1 ES485997 A1 ES 485997A1 ES 485997 A ES485997 A ES 485997A ES 485997 A ES485997 A ES 485997A ES 485997 A1 ES485997 A1 ES 485997A1
Authority
ES
Spain
Prior art keywords
needle
track
electromagnet
carriage
needle 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.)
Expired
Application number
ES485997A
Other languages
Spanish (es)
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.)
RCA Corp
Original Assignee
RCA 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
Priority claimed from US06/039,359 external-priority patent/US4262174A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of ES485997A1 publication Critical patent/ES485997A1/en
Expired 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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
    • G11B3/127—Providing horizontal force, e.g. anti-skating force

Landscapes

  • Moving Of Heads (AREA)
  • Feeding And Guiding Record Carriers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

Perfeccionamiento en dispositivos saltadores de surcos ppara un apparato de video disco, del tipo que se dispone en un sistema ppara recuperar información previamente grabada de un disco que tiene una pista de información espiral por medio de una aguja seguidora de la pista cuando se establece la velocidad relativa de la agua/disco; donde el funcionamiento normal del sistema comprende detectar la información previamente grabada a lo largo de vueltas o espiras sucesivas de la pista espiral en una progresión regular hacia una extremidades, cparacterizados porque comprenden un carro sujeto a movimiento traslatorio en correlación con molimientos radial de la aguja de seguimiento de la pista durante la reproducción, cuyo carro tiene una abertura en una pared inferior del mismo, un brazo de aguja que tiene un eje geométrico longitudinal y lleva la aguja seguidora de la pista en un extremo del brazo de la aguja contrario al extremo del carro; permitiendo los medios de sujeción elásticos que la aguja seguidora de la pista sobresalga a través de la abertura cuando el brazo de la aguja desciende durante la reproducción, un elemento magnético sujeto al brazo de la aguja cerca de uno de sus extremos, un electroimán ppara proporcionar un campo magnético controlable de una polaridad dada cunado se activa, medios ppara montar el electroimán al carro en las proximidades del elemento magnético; y medios para activar de una forma selectiva el electroimán y producir un desplazamiento en el lugar radial de la aguja seguidora de la pista.Improvement in groove-jumping devices for a video disc apparatus, of the type provided in a system for retrieving previously recorded information from a disc having a spiral information track by means of a track-following needle when the speed is established relative water/disk; where the normal operation of the system comprises detecting the previously recorded information along successive turns or spirals of the spiral track in a regular progression towards an extremity, characterized in that they comprise a carriage subject to translational movement in correlation with radial grinding of the needle. tracking of the track during playback, whose carriage has an opening in a lower wall thereof, a needle arm that has a longitudinal geometric axis and carries the track following needle at one end of the needle arm opposite to the end of the car; the elastic fastening means allowing the track follower needle to protrude through the opening when the needle arm descends during playback, a magnetic element attached to the needle arm near one of its ends, an electromagnet to provide a controllable magnetic field of a given polarity when activated, means for mounting the electromagnet to the carriage in the vicinity of the magnetic element; and means for selectively activating the electromagnet and producing a displacement in the radial location of the track follower needle.

ES485997A 1978-11-16 1979-11-15 IMPROVEMENTS IN ROLL JUMPING DEVICES FOR A VIDEO DISC DEVICE Expired ES485997A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7844739 1978-11-16
US06/039,359 US4262174A (en) 1979-05-15 1979-05-15 Track skipper for video disc player

Publications (1)

Publication Number Publication Date
ES485997A1 true ES485997A1 (en) 1980-09-01

Family

ID=26269598

Family Applications (1)

Application Number Title Priority Date Filing Date
ES485997A Expired ES485997A1 (en) 1978-11-16 1979-11-15 IMPROVEMENTS IN ROLL JUMPING DEVICES FOR A VIDEO DISC DEVICE

Country Status (11)

Country Link
AU (1) AU525918B2 (en)
CA (1) CA1131775A (en)
DE (1) DE2946015A1 (en)
DK (1) DK485279A (en)
ES (1) ES485997A1 (en)
FR (1) FR2441900A1 (en)
HK (1) HK49883A (en)
IT (1) IT1193335B (en)
PL (1) PL123280B1 (en)
SE (1) SE7909299L (en)
SG (1) SG30183G (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470489B1 (en) * 1979-11-19 1986-01-17 Rca Corp BIDIRECTIONAL PULSE GENERATOR FOR DRIVING A DEVICE TRANSDUCER OF A READ NEEDLE
US4375094A (en) * 1980-11-10 1983-02-22 Rca Corporation Apparatus for advancing a video disc pickup transducer beyond a disc record defect
JPS57150173A (en) * 1981-03-12 1982-09-16 Victor Co Of Japan Ltd Reproducer for disc shape information recording medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5048820A (en) * 1973-04-11 1975-05-01
JPS53113505A (en) * 1977-03-15 1978-10-04 Victor Co Of Japan Ltd Pickup device for rotary recording medium reproducing signal
US4170783A (en) * 1977-03-14 1979-10-09 Victor Company Of Japan, Ltd. Signal pickup device for reproducing an information signal recorded on a track of a rotary recording medium
JPS594782B2 (en) * 1977-03-14 1984-01-31 日本ビクター株式会社 Signal pickup device for rotating recording media playback device
AU530389B2 (en) * 1978-05-22 1983-07-14 Rca Corp. Recording/playback apparatus facilitating track skipping
CA1133633A (en) * 1978-11-16 1982-10-12 Elvin D. Simshauser Track skipper apparatus for video disc player

Also Published As

Publication number Publication date
AU5269379A (en) 1980-05-22
IT7927256A0 (en) 1979-11-13
DE2946015A1 (en) 1980-05-29
SG30183G (en) 1984-04-19
AU525918B2 (en) 1982-12-09
FR2441900A1 (en) 1980-06-13
SE7909299L (en) 1980-05-17
CA1131775A (en) 1982-09-14
DK485279A (en) 1980-05-17
PL123280B1 (en) 1982-10-30
IT1193335B (en) 1988-06-15
PL219641A1 (en) 1980-08-11
HK49883A (en) 1983-11-11

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001009