JPS5453503A - Speed deviation display device of turntable of record player - Google Patents

Speed deviation display device of turntable of record player

Info

Publication number
JPS5453503A
JPS5453503A JP12065577A JP12065577A JPS5453503A JP S5453503 A JPS5453503 A JP S5453503A JP 12065577 A JP12065577 A JP 12065577A JP 12065577 A JP12065577 A JP 12065577A JP S5453503 A JPS5453503 A JP S5453503A
Authority
JP
Japan
Prior art keywords
turntable
pulse
detection part
signals
deviations
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
JP12065577A
Other languages
Japanese (ja)
Other versions
JPS5825231B2 (en
Inventor
Yoshihiro Ito
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP12065577A priority Critical patent/JPS5825231B2/en
Publication of JPS5453503A publication Critical patent/JPS5453503A/en
Publication of JPS5825231B2 publication Critical patent/JPS5825231B2/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
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating

Landscapes

  • Indicating Measured Values (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To make display easy to see by electronically detecting the rotational speed deviations of turntable and letting corresponding light emitting elements emit light. CONSTITUTION:Pulse of the periods corresponding to the rotational speeds of a turntable turning motor 1 are processed by a turntable speed detection part K, exclusive-OR circuit 3, AND circuit 4 and become the pulse signals of a specified width synchronous to their rise. On the other hand, the pulse signals of the same width as that of the pulses outputted of the detection part K synchronous to the rise of standard pulses are likewise generated from a standard pulse generating part P. These pulse signals are applied as set- and reset signals to an FF 11 via invertion circuits 9, 10 respectively and are made to the up-down count control signals of an up-down counter 14 which counts the output pulses of the detection part K, generating part P, by the FF 11. Hence, if light emitting diodes etc. L1 thru L8 are lighted through a driving circuit 15 according to the results of counting proportional to the rotational speed deviations of the turntable of the counter 14, the deviations may be displayed readily visibly even in the daytime without using interference fringes, etc.
JP12065577A 1977-10-05 1977-10-05 Record player turntable speed deviation display device Expired JPS5825231B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12065577A JPS5825231B2 (en) 1977-10-05 1977-10-05 Record player turntable speed deviation display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12065577A JPS5825231B2 (en) 1977-10-05 1977-10-05 Record player turntable speed deviation display device

Publications (2)

Publication Number Publication Date
JPS5453503A true JPS5453503A (en) 1979-04-26
JPS5825231B2 JPS5825231B2 (en) 1983-05-26

Family

ID=14791598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12065577A Expired JPS5825231B2 (en) 1977-10-05 1977-10-05 Record player turntable speed deviation display device

Country Status (1)

Country Link
JP (1) JPS5825231B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030064160A (en) * 2002-01-26 2003-07-31 주식회사 이정유통 Hard Disk Drive Driving Determining Device Using Light Emitting Diode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030064160A (en) * 2002-01-26 2003-07-31 주식회사 이정유통 Hard Disk Drive Driving Determining Device Using Light Emitting Diode

Also Published As

Publication number Publication date
JPS5825231B2 (en) 1983-05-26

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