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GB1392632A - Styli - Google Patents

Styli

Info

Publication number
GB1392632A
GB1392632A GB4932972A GB4932972A GB1392632A GB 1392632 A GB1392632 A GB 1392632A GB 4932972 A GB4932972 A GB 4932972A GB 4932972 A GB4932972 A GB 4932972A GB 1392632 A GB1392632 A GB 1392632A
Authority
GB
United Kingdom
Prior art keywords
playback
oct
stylus
parts
metal
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
GB4932972A
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Priority to GB4932972A priority Critical patent/GB1392632A/en
Publication of GB1392632A publication Critical patent/GB1392632A/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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1392632 Recording and playback EMI Ltd 19 Oct 1973 [26 Oct 1972] 49329/72 Heading G5R A stylus, for capacitative playback of topographical grooved records, comprises an electrical conductor 7 extending between and insulated from two electrically conductive screening members 3, 4. As shown, successive layers of metal 3, 4 and dielectric material 5, 6, e.g. quartz or glass, are deposited on the flat surfaces of two sapphire half-stylus parts 1, 2, a metal probe 7 is formed on one dielectric layer 5 and the two parts are joined together.
GB4932972A 1972-10-26 1972-10-26 Styli Expired GB1392632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4932972A GB1392632A (en) 1972-10-26 1972-10-26 Styli

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4932972A GB1392632A (en) 1972-10-26 1972-10-26 Styli

Publications (1)

Publication Number Publication Date
GB1392632A true GB1392632A (en) 1975-04-30

Family

ID=10451980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4932972A Expired GB1392632A (en) 1972-10-26 1972-10-26 Styli

Country Status (1)

Country Link
GB (1) GB1392632A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371742A1 (en) * 1976-11-17 1978-06-16 Victor Company Of Japan READING POINT FOR THE REPRODUCTION OF RECORDED SIGNALS ON A RECORDING MEDIUM
FR2388660A1 (en) * 1977-04-25 1978-11-24 Pickering & Co Inc TIP READING DEVICE FOR PHONOGRAPHIC RECORDING DISC PRESSING MATRIX
FR2453462A1 (en) * 1976-11-17 1980-10-31 Victor Company Of Japan Capacitive disc record reproduction needle - has electrode attached to needle surface to sense capacity variations
US4372042A (en) * 1980-09-12 1983-02-08 Diamagnetics, Inc. Method for manufacturing diamond pick-up stylus
CN103761976A (en) * 2014-02-20 2014-04-30 蒋大龙 Stylus sliding mechanism and player comprising same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371742A1 (en) * 1976-11-17 1978-06-16 Victor Company Of Japan READING POINT FOR THE REPRODUCTION OF RECORDED SIGNALS ON A RECORDING MEDIUM
FR2453462A1 (en) * 1976-11-17 1980-10-31 Victor Company Of Japan Capacitive disc record reproduction needle - has electrode attached to needle surface to sense capacity variations
FR2388660A1 (en) * 1977-04-25 1978-11-24 Pickering & Co Inc TIP READING DEVICE FOR PHONOGRAPHIC RECORDING DISC PRESSING MATRIX
US4372042A (en) * 1980-09-12 1983-02-08 Diamagnetics, Inc. Method for manufacturing diamond pick-up stylus
CN103761976A (en) * 2014-02-20 2014-04-30 蒋大龙 Stylus sliding mechanism and player comprising same
CN103761976B (en) * 2014-02-20 2016-06-01 蒋大龙 A kind of stylus slip mechanism and comprise the phonograph of described stylus slip mechanism

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee