FR2363159A1 - Pointe de lecture du sillon d'un disque - Google Patents

Pointe de lecture du sillon d'un disque

Info

Publication number
FR2363159A1
FR2363159A1 FR7724488A FR7724488A FR2363159A1 FR 2363159 A1 FR2363159 A1 FR 2363159A1 FR 7724488 A FR7724488 A FR 7724488A FR 7724488 A FR7724488 A FR 7724488A FR 2363159 A1 FR2363159 A1 FR 2363159A1
Authority
FR
France
Prior art keywords
disc
trail
reading point
line
relates
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
FR7724488A
Other languages
English (en)
Other versions
FR2363159B1 (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.)
Individual
Original Assignee
Individual
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 CH1093876A external-priority patent/CH597667A5/de
Priority claimed from CH385277A external-priority patent/CH604311A5/de
Application filed by Individual filed Critical Individual
Publication of FR2363159A1 publication Critical patent/FR2363159A1/fr
Application granted granted Critical
Publication of FR2363159B1 publication Critical patent/FR2363159B1/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Magnetic Record Carriers (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

La présente invention concerne l'enregistrement de l'information. Elle concerne en particulier une pointe de lecture du sillon d'un disque 9, comprenant une portion de montage 1 et une portion effilée 2. La ligne de laréte de palpage 3, 4 de la portion effilée 2 forme un V dont l'extrémité est arrondie et dont les deux flancs 4 sont symétriques et convexes, le plan passant par la ligne de l'arête de palpage 3, 4 faisant un angle de 20 degrés par rapport à l'axe longitudinal de la portion de montage 1. L'invention s'applique en particulier à la lecture de signaux stéréophoniques ou quadrophoniques.
FR7724488A 1976-08-27 1977-08-09 Pointe de lecture du sillon d'un disque Granted FR2363159A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1093876A CH597667A5 (en) 1976-08-27 1976-08-27 Stereophonic or quadraphonic pick=up stylus
CH385277A CH604311A5 (en) 1977-03-23 1977-03-23 Stereophonic or quadraphonic pick=up stylus

Publications (2)

Publication Number Publication Date
FR2363159A1 true FR2363159A1 (fr) 1978-03-24
FR2363159B1 FR2363159B1 (fr) 1984-04-27

Family

ID=25694008

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724488A Granted FR2363159A1 (fr) 1976-08-27 1977-08-09 Pointe de lecture du sillon d'un disque

Country Status (10)

Country Link
US (1) US4365325A (fr)
JP (1) JPS5329104A (fr)
AT (1) AT358843B (fr)
CA (1) CA1095837A (fr)
DE (1) DE2732533C3 (fr)
DK (1) DK161228C (fr)
ES (1) ES230610Y (fr)
FR (1) FR2363159A1 (fr)
GB (1) GB1584747A (fr)
NL (1) NL170779C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58159616U (ja) * 1982-04-21 1983-10-24 並木精密宝石株式会社 レコ−ド用再生針
FR2568711B1 (fr) * 1984-07-31 1989-06-16 Zafira Procede et dispositif pour la fabrication de diamants de lecture elliptiques et diamants elliptiques ainsi obtenus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR920559A (fr) * 1945-03-19 1947-04-11 Dictaphone Corp Perfectionnement dans les méthodes de fabrication des styles transmetteurs de vibrations
CH529411A (de) * 1969-12-20 1972-10-15 Ernst Fr Weinz Weka Ohg An einem Halter befestigte Tonabnehmernadel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544495A (en) * 1945-03-19 1951-03-06 Dictaphone Corp Stylus construction
US3534968A (en) * 1969-02-06 1970-10-20 Bruce Diamond Corp Elliptical phonograph stylus
CH516205A (de) * 1970-03-09 1971-11-30 Bruce Diamond Corp Tonabnehmernadel
DE2023904B2 (de) * 1970-05-15 1972-02-03 Wilms, Hermann, 2400 Lübeck Abtastnadel
GB1383238A (en) * 1971-03-13 1975-02-05 Victor Company Of Japan Phonograph pickup stylus
US3871664A (en) * 1973-05-29 1975-03-18 Diamagnetics Inc Phonograph stylus
JPS5830641B2 (ja) * 1975-09-23 1983-06-30 オグラホウセキセイキコウギヨウ カブシキガイシヤ エンバンレコ−ドサイセイバリ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR920559A (fr) * 1945-03-19 1947-04-11 Dictaphone Corp Perfectionnement dans les méthodes de fabrication des styles transmetteurs de vibrations
CH529411A (de) * 1969-12-20 1972-10-15 Ernst Fr Weinz Weka Ohg An einem Halter befestigte Tonabnehmernadel

Also Published As

Publication number Publication date
US4365325A (en) 1982-12-21
NL170779B (nl) 1982-07-16
JPS5329104A (en) 1978-03-18
ATA521377A (de) 1980-02-15
DE2732533C3 (de) 1981-10-01
DK335077A (da) 1978-02-28
GB1584747A (en) 1981-02-18
FR2363159B1 (fr) 1984-04-27
ES230610Y (es) 1978-03-01
ES230610U (es) 1977-11-01
AT358843B (de) 1980-10-10
NL170779C (nl) 1982-12-16
CA1095837A (fr) 1981-02-17
DE2732533A1 (de) 1978-03-02
DK161228C (da) 1991-11-25
DE2732533B2 (fr) 1980-12-18
DK161228B (da) 1991-06-10
NL7709168A (nl) 1978-03-01

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Legal Events

Date Code Title Description
TP Transmission of property