DE1447987B2 - Prüfplatte für Schallplattenspieler - Google Patents

Prüfplatte für Schallplattenspieler

Info

Publication number
DE1447987B2
DE1447987B2 DE1447987A DE1447987A DE1447987B2 DE 1447987 B2 DE1447987 B2 DE 1447987B2 DE 1447987 A DE1447987 A DE 1447987A DE 1447987 A DE1447987 A DE 1447987A DE 1447987 B2 DE1447987 B2 DE 1447987B2
Authority
DE
Germany
Prior art keywords
test
grooves
needle
test plate
sections
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.)
Pending
Application number
DE1447987A
Other languages
German (de)
English (en)
Other versions
DE1447987A1 (de
Inventor
Keith-Geoffrey Greenwich Caldwell (Australien)
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 AU53477/64A external-priority patent/AU401715B2/en
Application filed by Individual filed Critical Individual
Publication of DE1447987A1 publication Critical patent/DE1447987A1/de
Publication of DE1447987B2 publication Critical patent/DE1447987B2/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K5/00—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
    • 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
    • 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
    • G11B3/68—Record carriers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Manufacturing Optical Record Carriers (AREA)
DE1447987A 1964-12-30 1965-12-30 Prüfplatte für Schallplattenspieler Pending DE1447987B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU53477/64A AU401715B2 (en) 1964-12-30 Stylus and equipment testing record for record players
AU5582265 1965-03-02

Publications (2)

Publication Number Publication Date
DE1447987A1 DE1447987A1 (de) 1969-03-20
DE1447987B2 true DE1447987B2 (de) 1974-03-14

Family

ID=25630080

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1447987A Pending DE1447987B2 (de) 1964-12-30 1965-12-30 Prüfplatte für Schallplattenspieler

Country Status (6)

Country Link
US (1) US3460841A (Direct)
BE (1) BE674554A (Direct)
DE (1) DE1447987B2 (Direct)
FR (1) FR1462631A (Direct)
GB (1) GB1134100A (Direct)
NL (1) NL6517067A (Direct)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375095A (en) * 1981-01-05 1983-02-22 Rca Corporation Method and apparatus for testing styli
US4416144A (en) * 1982-04-21 1983-11-22 Sperry Corporation Apparatus for evaluating slider flying dynamics
US4541716A (en) * 1983-04-15 1985-09-17 Rca Corporation Detection of defects in a circular or spiral diffraction grating
US5163334A (en) * 1990-10-24 1992-11-17 Simonds Industries Inc. Circular saw testing technique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740296A (en) * 1952-12-11 1956-04-03 Permo Inc Phonograph needle comparator

Also Published As

Publication number Publication date
BE674554A (Direct) 1966-05-16
US3460841A (en) 1969-08-12
GB1134100A (en) 1968-11-20
DE1447987A1 (de) 1969-03-20
NL6517067A (Direct) 1966-07-01
FR1462631A (fr) 1966-12-16

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