FR2198198B1 - - Google Patents

Info

Publication number
FR2198198B1
FR2198198B1 FR7332040A FR7332040A FR2198198B1 FR 2198198 B1 FR2198198 B1 FR 2198198B1 FR 7332040 A FR7332040 A FR 7332040A FR 7332040 A FR7332040 A FR 7332040A FR 2198198 B1 FR2198198 B1 FR 2198198B1
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
FR7332040A
Other versions
FR2198198A1 (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 FR2198198A1 publication Critical patent/FR2198198A1/fr
Application granted granted Critical
Publication of FR2198198B1 publication Critical patent/FR2198198B1/fr
Expired 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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • G11B3/48—Needles
    • 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
FR7332040A 1972-09-06 1973-09-05 Expired FR2198198B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00286657A US3826877A (en) 1972-09-06 1972-09-06 Information playback system stylus

Publications (2)

Publication Number Publication Date
FR2198198A1 FR2198198A1 (fr) 1974-03-29
FR2198198B1 true FR2198198B1 (fr) 1976-11-19

Family

ID=23099589

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7332040A Expired FR2198198B1 (fr) 1972-09-06 1973-09-05

Country Status (13)

Country Link
US (1) US3826877A (fr)
JP (1) JPS533924B2 (fr)
KR (1) KR780000423B1 (fr)
AT (1) AT336913B (fr)
BR (1) BR7306894D0 (fr)
CA (1) CA1011877A (fr)
DE (1) DE2345025B2 (fr)
FR (1) FR2198198B1 (fr)
GB (1) GB1444133A (fr)
IT (1) IT993876B (fr)
NL (1) NL7311905A (fr)
SE (1) SE389756B (fr)
SU (1) SU674694A3 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511398A (fr) * 1974-04-04 1976-01-08 Matsushita Electric Ind Co Ltd
US3943276A (en) * 1974-06-03 1976-03-09 Zenith Radio Corporation Record tracking pickup structure for a capacitive disc
US3930117A (en) * 1974-11-14 1975-12-30 Rca Corp Video capacitive disc playback apparatus and stylus with dielectric coating therefor
JPS5811696B2 (ja) * 1975-05-13 1983-03-04 松下電器産業株式会社 スタイラス部品の製造方法
JPS51131616A (en) * 1975-05-13 1976-11-16 Matsushita Electric Ind Co Ltd Stylus parts
JPS5812653B2 (ja) * 1975-05-13 1983-03-09 松下電器産業株式会社 スタイラス部品の製造方法
US4013830A (en) * 1975-05-19 1977-03-22 Rca Corporation Video disc stylus
JPS5254411A (en) * 1975-10-30 1977-05-02 Victor Co Of Japan Ltd Static capacitance type pick-up stylus and production of same
GB1585546A (en) 1976-04-08 1981-03-04 Victor Company Of Japan Information signal recording system
GB1592361A (en) * 1976-09-13 1981-07-08 Rca Corp Stylus manufacture
NL179765C (nl) * 1976-11-17 1986-11-03 Victor Company Of Japan Naald voor het weergeven van informatiesignalen, die op een registratiemedium zijn geregistreerd.
DE2760017C2 (de) * 1976-11-17 1985-04-04 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Abtaststift zur Abtastung eines als Änderungen der geometrischen Gestalt einer Aufzeichnungsspur aufgezeichneten Informationssignals
US4104832A (en) * 1977-03-25 1978-08-08 Rca Corporation Method for forming keel-tipped stylus for video disc systems
US4098030A (en) * 1977-03-28 1978-07-04 Rca Corporation Method for forming a narrowed-electrode pickup stylus for video disc systems
JPS5938655B2 (ja) * 1979-05-14 1984-09-18 日本放送協会 半導体デイスクメモリ装置
US4287689A (en) * 1979-10-30 1981-09-08 Rca Corporation Method for improving the quality of low frequency output of a video disc pickup stylus
US4315358A (en) * 1980-04-21 1982-02-16 Rca Corporation Method for the manufacture of capacitive pickup styli
JPS6028059B2 (ja) * 1980-05-10 1985-07-02 日本ビクター株式会社 静電容量値の変化検出型再生素子の再生針
JPS5724045A (en) * 1980-07-18 1982-02-08 Victor Co Of Japan Ltd Reproducing stylus of variation detection type reproducing element for electrostatic capacity value
US4458346A (en) * 1980-11-17 1984-07-03 Matsushita Electric Industrial Co., Ltd. Pickup stylus
JPS58177543A (ja) * 1982-04-09 1983-10-18 Hitachi Ltd ビデオディスク用再生針およびその製造方法
JPS6058595U (ja) * 1983-09-30 1985-04-23 スズキ株式会社 自動二輪車のスイングア−ム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB153300A (en) * 1919-11-01 1922-02-01 Emil Waltz Improvements in the recording and reproduction of sounds by means of a sound succession relief
US2493466A (en) * 1946-07-10 1950-01-03 Rca Corp Phonograph system and stylus therefor
DE1549080A1 (de) * 1967-02-07 1971-03-04 Telefunken Patent Traeger mit wenigstens zwei in einer gemeinsamen Rille aufgezeichneten Signalen

Also Published As

Publication number Publication date
KR780000423B1 (en) 1978-10-10
IT993876B (it) 1975-09-30
US3826877A (en) 1974-07-30
SU674694A3 (ru) 1979-07-15
DE2345025B2 (de) 1976-01-22
DE2345025A1 (de) 1974-03-14
JPS4966102A (fr) 1974-06-26
ATA772873A (de) 1976-09-15
JPS533924B2 (fr) 1978-02-13
FR2198198A1 (fr) 1974-03-29
NL7311905A (fr) 1974-03-08
GB1444133A (en) 1976-07-28
BR7306894D0 (pt) 1974-07-25
AU5988673A (en) 1975-03-06
AT336913B (de) 1977-06-10
CA1011877A (en) 1977-06-07
SE389756B (sv) 1976-11-15

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Legal Events

Date Code Title Description
ST Notification of lapse