FR2291570B1 - - Google Patents

Info

Publication number
FR2291570B1
FR2291570B1 FR7534672A FR7534672A FR2291570B1 FR 2291570 B1 FR2291570 B1 FR 2291570B1 FR 7534672 A FR7534672 A FR 7534672A FR 7534672 A FR7534672 A FR 7534672A FR 2291570 B1 FR2291570 B1 FR 2291570B1
Authority
FR
France
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
FR7534672A
Other versions
FR2291570A1 (fr
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
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2291570A1 publication Critical patent/FR2291570A1/fr
Application granted granted Critical
Publication of FR2291570B1 publication Critical patent/FR2291570B1/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
    • 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
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • H04N5/9202—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal
    • H04N5/9204—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal using frequency division multiplex
FR7534672A 1974-11-14 1975-11-13 Dispositif de restitution de videodisques et aiguille prevue a cet effet Granted FR2291570A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US523311A US3930117A (en) 1974-11-14 1974-11-14 Video capacitive disc playback apparatus and stylus with dielectric coating therefor

Publications (2)

Publication Number Publication Date
FR2291570A1 FR2291570A1 (fr) 1976-06-11
FR2291570B1 true FR2291570B1 (fr) 1981-09-18

Family

ID=24084491

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7534672A Granted FR2291570A1 (fr) 1974-11-14 1975-11-13 Dispositif de restitution de videodisques et aiguille prevue a cet effet

Country Status (6)

Country Link
US (1) US3930117A (fr)
JP (1) JPS5172424A (fr)
CA (1) CA1058751A (fr)
DE (1) DE2551069A1 (fr)
FR (1) FR2291570A1 (fr)
GB (1) GB1522988A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1524032A (en) * 1974-11-18 1978-09-06 Rca Corp Video disc stylus
JPS51131616A (en) * 1975-05-13 1976-11-16 Matsushita Electric Ind Co Ltd Stylus parts
US4013830A (en) * 1975-05-19 1977-03-22 Rca Corporation Video disc stylus
US4105213A (en) * 1975-10-15 1978-08-08 Victor Company Of Japan, Ltd. Device for cutting a sound groove on a disc recording medium
JPS5254411A (en) * 1975-10-30 1977-05-02 Victor Co Of Japan Ltd Static capacitance type pick-up stylus and production of same
US4491941A (en) * 1976-04-08 1985-01-01 Victor Company Of Japan, Ltd. Reproducing stylus for an information signal recording medium
JPS53108413A (en) * 1977-03-04 1978-09-21 Victor Co Of Japan Ltd Reproducing stylus of reproducing element of capacity variation detecting type
US4312013A (en) * 1979-09-19 1982-01-19 Rca Corporation Non-linear aperture correction circuit
US4272786A (en) * 1978-10-16 1981-06-09 Rca Corporation Video disc playback apparatus with non-linear aperture correction
GB2048547B (en) * 1979-03-27 1983-03-30 Shibaura Denki Kk Video disc and playback system therefore
JPS56117343A (en) 1980-02-19 1981-09-14 Victor Co Of Japan Ltd Reproducing stylus of reproducing element detecting variation in electrostatic capacity value
US4296144A (en) * 1980-04-23 1981-10-20 Rca Corporation Ion implanted stylus
US4371961A (en) * 1980-11-21 1983-02-01 Rca Corporation Capacitive information system
US4418407A (en) * 1981-12-03 1983-11-29 Rca Corporation Video disc pickup stylus
JPS57120247A (en) * 1981-12-07 1982-07-27 Victor Co Of Japan Ltd Reproducing stylus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842194A (en) * 1971-03-22 1974-10-15 Rca Corp Information records and recording/playback systems therefor
US3783196A (en) * 1971-03-22 1974-01-01 Rca Corp High-density capacitive information records and playback apparatus therefor
US3826877A (en) * 1972-09-06 1974-07-30 Rca Corp Information playback system stylus
JPS5535778B2 (fr) * 1973-03-22 1980-09-17

Also Published As

Publication number Publication date
FR2291570A1 (fr) 1976-06-11
DE2551069A1 (de) 1976-05-26
GB1522988A (en) 1978-08-31
US3930117A (en) 1975-12-30
CA1058751A (fr) 1979-07-17
JPS5172424A (fr) 1976-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse