FR2324090A1 - PLAYBACK SUBJECT TO A SPRING-FORMING ELEMENT FOR VIDEODISC PLAYBACK - Google Patents

PLAYBACK SUBJECT TO A SPRING-FORMING ELEMENT FOR VIDEODISC PLAYBACK

Info

Publication number
FR2324090A1
FR2324090A1 FR7627577A FR7627577A FR2324090A1 FR 2324090 A1 FR2324090 A1 FR 2324090A1 FR 7627577 A FR7627577 A FR 7627577A FR 7627577 A FR7627577 A FR 7627577A FR 2324090 A1 FR2324090 A1 FR 2324090A1
Authority
FR
France
Prior art keywords
pick
playback
spring
pin
groove
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
FR7627577A
Other languages
French (fr)
Other versions
FR2324090B1 (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.)
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 GB37848/75A external-priority patent/GB1552763A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2324090A1 publication Critical patent/FR2324090A1/en
Application granted granted Critical
Publication of FR2324090B1 publication Critical patent/FR2324090B1/fr
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
    • G11B3/20—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by elastic means, e.g. spring
    • 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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank

Landscapes

  • Moving Of Heads (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Feeding And Guiding Record Carriers (AREA)

Abstract

For reproducing signals recorded on an image recording disc in a spiral groove, there is a pick-up pin (15) at the end of a supporting arm (19), the mass of which is less than that required for the desired track-keeping force. The track-keeping force is generated by a leaf spring (33), tensioned between the pick-up pin (15) and a rest (14) of the reproducing apparatus. This has the effect that the pick-up pin returns quickly to the disc groove when it has been thrown out from the said groove by an undesired force on it. The spring also has the effect that the free end of the pick-up arm, held in a compliant part (21) of the apparatus, is always held in the correct position in relation to the rest, and can furthermore serve the purpose of establishing an electrical connection with a signal-processing circuit of the disc player.
FR7627577A 1975-09-15 1976-09-14 PLAYBACK SUBJECT TO A SPRING-FORMING ELEMENT FOR VIDEODISC PLAYBACK Granted FR2324090A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB37848/75A GB1552763A (en) 1975-09-15 1975-09-15 Spring load stylus record playback apparatus
US05/667,307 US4077050A (en) 1975-09-15 1976-03-16 Video disc player employing a spring loaded stylus apparatus

Publications (2)

Publication Number Publication Date
FR2324090A1 true FR2324090A1 (en) 1977-04-08
FR2324090B1 FR2324090B1 (en) 1982-07-02

Family

ID=26263606

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627577A Granted FR2324090A1 (en) 1975-09-15 1976-09-14 PLAYBACK SUBJECT TO A SPRING-FORMING ELEMENT FOR VIDEODISC PLAYBACK

Country Status (11)

Country Link
JP (1) JPS5237004A (en)
AT (1) AT356918B (en)
CA (1) CA1087730A (en)
CH (1) CH608906A5 (en)
DE (1) DE2641560C2 (en)
DK (1) DK141796B (en)
ES (1) ES451541A1 (en)
FR (1) FR2324090A1 (en)
IT (1) IT1068498B (en)
NL (1) NL7610194A (en)
NZ (1) NZ182050A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325142A1 (en) * 1975-09-18 1977-04-15 Rca Corp Magnetic coupling for video pickup arm - includes pot magnet system to give faithful reproduction from video track
FR2325143A1 (en) * 1975-09-18 1977-04-15 Rca Corp Video disc player with removable processing unit - has cam shaped connections to prevent damage to mechanism
FR2325139A1 (en) * 1975-09-18 1977-04-15 Rca Corp Play back arm for video disc player - has mounting plate for arm suspended by flexible bands for retraction into protective housing
FR2325138A1 (en) * 1975-09-18 1977-04-15 Rca Corp Adjusting mechanism for video disc recorder - has adjustable fixing for spring loading of reproduction point tip
FR2475265A1 (en) * 1980-02-04 1981-08-07 Rca Corp ASSEMBLY OF A NEEDLE OF VIDEODISC AND ITS DRIVER FORMING COUNTERWEIGHT
FR2525060A1 (en) * 1982-04-08 1983-10-14 Rca Corp DEVICE FOR MAINTAINING A NEEDLE FOR READING VIDEO DISC SIGNALS

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932043Y2 (en) * 1980-11-21 1984-09-08 日本ビクター株式会社 Signal pickup device in playback equipment
US4404669A (en) * 1982-01-20 1983-09-13 Rca Corporation Stylus assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643886A (en) * 1948-09-25 1953-06-30 Alexander E Di Ghilini Arm for recording and reproducing apparatus
FR2223773A1 (en) * 1973-03-26 1974-10-25 Rca Corp
FR2225807A1 (en) * 1973-04-16 1974-11-08 Rca Corp
US3917903A (en) * 1974-11-12 1975-11-04 Rca Corp Detachable pickup arm magnetic coupling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873783A (en) * 1974-03-28 1975-03-25 Rca Corp Universal stylus arm pivot coupling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643886A (en) * 1948-09-25 1953-06-30 Alexander E Di Ghilini Arm for recording and reproducing apparatus
FR2223773A1 (en) * 1973-03-26 1974-10-25 Rca Corp
FR2225807A1 (en) * 1973-04-16 1974-11-08 Rca Corp
US3870835A (en) * 1973-04-16 1975-03-11 Rca Corp Stylus control apparatus for a video disc record player
US3917903A (en) * 1974-11-12 1975-11-04 Rca Corp Detachable pickup arm magnetic coupling

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325142A1 (en) * 1975-09-18 1977-04-15 Rca Corp Magnetic coupling for video pickup arm - includes pot magnet system to give faithful reproduction from video track
FR2325143A1 (en) * 1975-09-18 1977-04-15 Rca Corp Video disc player with removable processing unit - has cam shaped connections to prevent damage to mechanism
FR2325139A1 (en) * 1975-09-18 1977-04-15 Rca Corp Play back arm for video disc player - has mounting plate for arm suspended by flexible bands for retraction into protective housing
FR2325138A1 (en) * 1975-09-18 1977-04-15 Rca Corp Adjusting mechanism for video disc recorder - has adjustable fixing for spring loading of reproduction point tip
FR2475265A1 (en) * 1980-02-04 1981-08-07 Rca Corp ASSEMBLY OF A NEEDLE OF VIDEODISC AND ITS DRIVER FORMING COUNTERWEIGHT
FR2525060A1 (en) * 1982-04-08 1983-10-14 Rca Corp DEVICE FOR MAINTAINING A NEEDLE FOR READING VIDEO DISC SIGNALS

Also Published As

Publication number Publication date
NZ182050A (en) 1979-10-25
JPS5737921B2 (en) 1982-08-12
DE2641560A1 (en) 1977-04-14
CA1087730A (en) 1980-10-14
AT356918B (en) 1980-06-10
DK141796B (en) 1980-06-16
DE2641560C2 (en) 1984-05-17
IT1068498B (en) 1985-03-21
DK413876A (en) 1977-03-16
CH608906A5 (en) 1979-01-31
ES451541A1 (en) 1977-12-01
DK141796C (en) 1980-11-03
NL7610194A (en) 1977-03-17
ATA677776A (en) 1979-10-15
FR2324090B1 (en) 1982-07-02
JPS5237004A (en) 1977-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse