JPS5819767A - Equi-linear speed controller of rotary recording medium - Google Patents

Equi-linear speed controller of rotary recording medium

Info

Publication number
JPS5819767A
JPS5819767A JP11956481A JP11956481A JPS5819767A JP S5819767 A JPS5819767 A JP S5819767A JP 11956481 A JP11956481 A JP 11956481A JP 11956481 A JP11956481 A JP 11956481A JP S5819767 A JPS5819767 A JP S5819767A
Authority
JP
Japan
Prior art keywords
recording medium
voltage
rotary recording
linear speed
resistance
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
JP11956481A
Inventor
Tetsushi Itoi
Original Assignee
Nec Home Electronics 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 Nec Home Electronics Ltd filed Critical Nec Home Electronics Ltd
Priority to JP11956481A priority Critical patent/JPS5819767A/en
Publication of JPS5819767A publication Critical patent/JPS5819767A/en
Application status is Pending legal-status Critical

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, 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
    • G11B19/20Driving; Starting; Stopping; Control thereof
    • G11B19/24Arrangements for providing constant relative speed between record carrier and head

Abstract

PURPOSE:To detect a recording signal at a constant linear speed out of a rotary recording medium, by providing a control voltage generating part consisting of a constant voltage circuit, a potentiometer and an auxiliary resistance, and generatting the voltage of a level which is adversely proportional to the radius of the rotary recording medium. CONSTITUTION:The synthetic resistance value (l) of an auxiliary resistance 53 and a potentiometer 52 is corresponding to the distance from the center (a) of a rotary recording medium 1 to the most outer circumference part (c). The resistance value (r) of the meter 52 to an earth is corresponding to the distance from the center (a) to a signal detecting means 6. The both-end voltage of the value (l), i.e., the voltage value V0 drawn to an output terminal 4 at a control voltage generating part 5 is adversely proportional to the resistance (r). The voltage V0 is applied to a motor 2 via an amplifier 3, and as a result the motor 2 gives the constant linear speed control to the speed of revolution of the medium 1 to the means 6.
JP11956481A 1981-07-29 1981-07-29 Equi-linear speed controller of rotary recording medium Pending JPS5819767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11956481A JPS5819767A (en) 1981-07-29 1981-07-29 Equi-linear speed controller of rotary recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11956481A JPS5819767A (en) 1981-07-29 1981-07-29 Equi-linear speed controller of rotary recording medium

Publications (1)

Publication Number Publication Date
JPS5819767A true JPS5819767A (en) 1983-02-04

Family

ID=14764448

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11956481A Pending JPS5819767A (en) 1981-07-29 1981-07-29 Equi-linear speed controller of rotary recording medium

Country Status (1)

Country Link
JP (1) JPS5819767A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101162A (en) * 1978-11-16 1980-08-01 Mca Disco Vision Device for rotating information stored disk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101162A (en) * 1978-11-16 1980-08-01 Mca Disco Vision Device for rotating information stored disk

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