GB1519974A - Disc record groove skipper apparatus - Google Patents

Disc record groove skipper apparatus

Info

Publication number
GB1519974A
GB1519974A GB32494/75A GB3249475A GB1519974A GB 1519974 A GB1519974 A GB 1519974A GB 32494/75 A GB32494/75 A GB 32494/75A GB 3249475 A GB3249475 A GB 3249475A GB 1519974 A GB1519974 A GB 1519974A
Authority
GB
United Kingdom
Prior art keywords
pick
groove
energized
bimorph
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
GB32494/75A
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 US05/499,557 external-priority patent/US3993863A/en
Priority claimed from US05/522,818 external-priority patent/US3963861A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1519974A publication Critical patent/GB1519974A/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
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/07—Heads for reproducing capacitive information
    • G11B9/075—Heads for reproducing capacitive information using mechanical contact with record carrier, e.g. by stylus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/7605—Television signal recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/903—Television signal recording using variable electrical capacitive recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Moving Of Heads (AREA)

Abstract

1519974 Video disc playback R C A CORPORATION 4 Aug 1975 [22 Aug 1974 12 Nov 1974] 32494/75 Heading G5R In a video disk reproducing system, e.g. of the type for capacitive playback of signals recorded as topographic features in spiral groove 13, a bimorph device 38 is provided in the pick up arm 18 between signal pick up 17 and the arm support, which bends when energized and radially displaces the pick up into an adjacent groove to provide a still picture mode of operation, a fast forward play mode or reverse play mode. In the described arrangement four television frames are recorded in each groove convolution. The bimorph is energized with pulses derived from the vertical sync component of the played back video signal and during the vertical blanking period is energized to move the pick up one groove outwards once per record revolution for still picture playback or is energized to move the pick up one groove outwards twice per revolution for reverse play or one groove inwards twice per revolution for fast forward play. As described the bimorph element is a pair of piezo electric layers sandwiched between an inner metal layer and two outer layers 42, 43 to which the energizing pulses are applied. Alternatively the element can be electromagnetic or magneto-strictive. In a second arrangement, Figs. 3 and 4 (not shown) the bimorph element is disposed between the stylus support element 32 and the arm 18.
GB32494/75A 1974-08-22 1975-08-04 Disc record groove skipper apparatus Expired GB1519974A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/499,557 US3993863A (en) 1974-08-22 1974-08-22 Disc record groove skipper
US05/522,818 US3963861A (en) 1974-11-12 1974-11-12 Disc record groove skipper apparatus

Publications (1)

Publication Number Publication Date
GB1519974A true GB1519974A (en) 1978-08-02

Family

ID=27053179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32494/75A Expired GB1519974A (en) 1974-08-22 1975-08-04 Disc record groove skipper apparatus

Country Status (8)

Country Link
JP (1) JPS5812791B2 (en)
AU (1) AU500871B2 (en)
DE (1) DE2537530A1 (en)
FR (1) FR2282693A1 (en)
GB (1) GB1519974A (en)
IT (1) IT1041917B (en)
NL (1) NL7509919A (en)
SE (1) SE409772B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510531A (en) * 1981-07-15 1985-04-09 Victor Company Of Japan, Ltd. Rotary recording medium and reproducing apparatus thereof
US4516161A (en) * 1981-07-28 1985-05-07 Victor Company Of Japan, Ltd. System for pausing reproduction in rotary recording medium reproducing apparatus
US4611248A (en) * 1981-07-06 1986-09-09 Victor Company Of Japan, Ltd. Rotary recording medium and reproducing apparatus therefor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310913A (en) * 1979-07-26 1982-01-12 Rca Corporation Stylus tracking aid using two bimorph elements longitudinally aligned
IT1133648B (en) * 1979-10-18 1986-07-09 Rca Corp APPARATUS ADAPTABLE FOR POSITIONAL TRANSFER OF THE STYLE OF A DISC PLAYER
IT1133819B (en) * 1979-10-26 1986-07-24 Rca Corp APPARATUS FOR PRE-VIEWING A VIDEO DISK
US4278846A (en) * 1979-10-29 1981-07-14 Rca Corporation Video disc locked groove clearance system
FR2470489B1 (en) * 1979-11-19 1986-01-17 Rca Corp BIDIRECTIONAL PULSE GENERATOR FOR DRIVING A DEVICE TRANSDUCER OF A READ NEEDLE
JPS5728483A (en) * 1980-07-28 1982-02-16 Victor Co Of Japan Ltd Playback device for disc shape information recording medium
JPS6051310B2 (en) * 1980-10-03 1985-11-13 日本ビクター株式会社 Slow motion reproduction method of disc-shaped information recording medium
US4375094A (en) * 1980-11-10 1983-02-22 Rca Corporation Apparatus for advancing a video disc pickup transducer beyond a disc record defect

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2118657C3 (en) * 1971-04-17 1979-08-30 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Playback apparatus for a hat with information stored in a spiral groove, the drive functions of which are controlled by control information provided on the disk, and disk therefor
GB1426328A (en) * 1972-04-19 1976-02-25 Rca Corp Stylus arm structure
JPS5246657B2 (en) * 1972-09-09 1977-11-26
JPS5048820A (en) * 1973-04-11 1975-05-01

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4611248A (en) * 1981-07-06 1986-09-09 Victor Company Of Japan, Ltd. Rotary recording medium and reproducing apparatus therefor
US4510531A (en) * 1981-07-15 1985-04-09 Victor Company Of Japan, Ltd. Rotary recording medium and reproducing apparatus thereof
US4516161A (en) * 1981-07-28 1985-05-07 Victor Company Of Japan, Ltd. System for pausing reproduction in rotary recording medium reproducing apparatus

Also Published As

Publication number Publication date
FR2282693B1 (en) 1979-01-19
SE7509090L (en) 1976-02-23
AU8403875A (en) 1977-02-24
AU500871B2 (en) 1979-06-07
FR2282693A1 (en) 1976-03-19
SE409772B (en) 1979-09-03
DE2537530A1 (en) 1976-03-04
JPS5812791B2 (en) 1983-03-10
JPS5152227A (en) 1976-05-08
NL7509919A (en) 1976-02-24
IT1041917B (en) 1980-01-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee