FR2324087A1 - Video record tone arm support - has gentle magnetically controlled raising and dropping action using permanent magnet - Google Patents

Video record tone arm support - has gentle magnetically controlled raising and dropping action using permanent magnet

Info

Publication number
FR2324087A1
FR2324087A1 FR7627578A FR7627578A FR2324087A1 FR 2324087 A1 FR2324087 A1 FR 2324087A1 FR 7627578 A FR7627578 A FR 7627578A FR 7627578 A FR7627578 A FR 7627578A FR 2324087 A1 FR2324087 A1 FR 2324087A1
Authority
FR
France
Prior art keywords
permanent magnet
tone arm
gentle
video record
arm support
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
FR7627578A
Other languages
French (fr)
Other versions
FR2324087B1 (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 GB3784775A external-priority patent/GB1543550A/en
Priority claimed from US05/667,387 external-priority patent/US4059277A/en
Priority claimed from US05/667,309 external-priority patent/US4053161A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2324087A1 publication Critical patent/FR2324087A1/en
Application granted granted Critical
Publication of FR2324087B1 publication Critical patent/FR2324087B1/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
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers

Landscapes

  • Moving Of Heads (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

A raising and lowering mechanism is used for the tone arm of a spiral groove video record player which assures a particularly gentle setting down or raising of the needle on the disc. The tone arm has one end pivoted to a supporting element, it carries a rest for the arm and also a moving component which can be moved between two settings. It contains a permanent magnet. The rest is controlled by the setting of the moving element so that in one of the settings the needle is raised clear of the record. A further component fixed to the supporting element carries a magnetic flux generator acting on the permanent magnet to effect a movement of the permanent magnet between its two settings.
FR7627578A 1975-09-15 1976-09-14 Video record tone arm support - has gentle magnetically controlled raising and dropping action using permanent magnet Granted FR2324087A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB3784975 1975-09-15
GB3784775A GB1543550A (en) 1975-09-15 1975-09-15 Stylus arm lifting/lowering apparatus for a video disc player
US05/667,387 US4059277A (en) 1975-09-15 1976-03-16 Stylus arm lifting/lowering apparatus for a video disc player system
US05/667,309 US4053161A (en) 1975-09-15 1976-03-16 Stylus arm lifting/lowering apparatus for a video disc player

Publications (2)

Publication Number Publication Date
FR2324087A1 true FR2324087A1 (en) 1977-04-08
FR2324087B1 FR2324087B1 (en) 1983-03-11

Family

ID=27448902

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627578A Granted FR2324087A1 (en) 1975-09-15 1976-09-14 Video record tone arm support - has gentle magnetically controlled raising and dropping action using permanent magnet

Country Status (2)

Country Link
DE (2) DE2641559C2 (en)
FR (1) FR2324087A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466929A1 (en) * 1979-10-03 1981-04-10 Rca Corp ASSEMBLY OF A NEEDLE OF RESTITUTION OF VIDEODISC AND CARTRIDGE CONTAINING THE SAME
FR2471021A1 (en) * 1979-11-28 1981-06-12 Rca Corp DEVICE FOR RAISING AND LOWERING A NEEDLE IN A DISK RECOVERY SYSTEM
FR2488716A1 (en) * 1980-08-13 1982-02-19 Rca Corp CARTRIDGE FOR VIDEO DISC NEEDLE WITH PROTECTIVE MEMBER

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272514A (en) * 1965-09-13 1966-09-13 Torjus B Heyerdahl Tone arm with retractable cartridge and stylus assembly
FR2010964A1 (en) * 1968-06-15 1970-02-20 Olympia Werke Ag
DE2055204A1 (en) * 1970-10-21 1972-04-27 Licentia Gmbh Device for keeping constant the contact pressure of scanners for recording media of signals
US3873783A (en) * 1974-03-28 1975-03-25 Rca Corp Universal stylus arm pivot coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917241C3 (en) * 1969-04-03 1974-01-31 Harry Dipl.-Phys. Dr. 3371 Gittelde Gaus Operating device for lifting, swiveling or lowering the tonearm of record players
GB1426328A (en) 1972-04-19 1976-02-25 Rca Corp Stylus arm structure
US3870835A (en) 1973-04-16 1975-03-11 Rca Corp Stylus control apparatus for a video disc record player

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272514A (en) * 1965-09-13 1966-09-13 Torjus B Heyerdahl Tone arm with retractable cartridge and stylus assembly
FR2010964A1 (en) * 1968-06-15 1970-02-20 Olympia Werke Ag
DE2055204A1 (en) * 1970-10-21 1972-04-27 Licentia Gmbh Device for keeping constant the contact pressure of scanners for recording media of signals
US3873783A (en) * 1974-03-28 1975-03-25 Rca Corp Universal stylus arm pivot coupling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466929A1 (en) * 1979-10-03 1981-04-10 Rca Corp ASSEMBLY OF A NEEDLE OF RESTITUTION OF VIDEODISC AND CARTRIDGE CONTAINING THE SAME
FR2471021A1 (en) * 1979-11-28 1981-06-12 Rca Corp DEVICE FOR RAISING AND LOWERING A NEEDLE IN A DISK RECOVERY SYSTEM
FR2488716A1 (en) * 1980-08-13 1982-02-19 Rca Corp CARTRIDGE FOR VIDEO DISC NEEDLE WITH PROTECTIVE MEMBER

Also Published As

Publication number Publication date
DE2641559C2 (en) 1983-11-24
DE2660201C2 (en) 1984-08-23
DE2641559A1 (en) 1977-04-07
FR2324087B1 (en) 1983-03-11

Similar Documents

Publication Publication Date Title
GB1266021A (en)
JPS5269309A (en) Adjustable and controllable magnetic recording disk and particularly flexible magnetic disk
FR2324087A1 (en) Video record tone arm support - has gentle magnetically controlled raising and dropping action using permanent magnet
JPS51114102A (en) Signal reading and control device for disc player
ES485997A1 (en) Video disc player - has track skipping device comprising electromagnet moving stylus radially across disc
JPS522703A (en) Magnetic recording and reproducing device
JPS522708A (en) Magnetic recording and reproducing device
FR2325142A1 (en) Magnetic coupling for video pickup arm - includes pot magnet system to give faithful reproduction from video track
FR2325139A1 (en) Play back arm for video disc player - has mounting plate for arm suspended by flexible bands for retraction into protective housing
ES243654U (en) Limiting device of travel for needles reproductive of phonographic toys of toy. (Machine-translation by Google Translate, not legally binding)
US2360021A (en) Stylus brace for stepback mechanisms
JPS522706A (en) Magnetic recording and reproducing device
JPS53112704A (en) Signal pickup device of rotary recording medium reproducer
JPS5429609A (en) Moving mirror device in optical information recording medium disc reproducer
JPS5271925A (en) Magnetic record play-back unit
JPS5241893A (en) Magnetic recording medium
SE7909298L (en) SAVING DEVICE FOR VIDEO DISC PLAYERS
JPS522707A (en) Magnetic recording and reproducing device
JPS52117518A (en) Information recording unit
JPS56156970A (en) Linear tracking arm device
JPS5282304A (en) Record player
JPS51151507A (en) Magnetic record reproducing device
JPS5385319A (en) Positioner of magnetic disc device
IT1210845B (en) Video disc player
JPS522705A (en) Magnetic recording and reproducing device

Legal Events

Date Code Title Description
ST Notification of lapse