JPS57195366A - Rotation controller for recording disk - Google Patents

Rotation controller for recording disk

Info

Publication number
JPS57195366A
JPS57195366A JP56080248A JP8024881A JPS57195366A JP S57195366 A JPS57195366 A JP S57195366A JP 56080248 A JP56080248 A JP 56080248A JP 8024881 A JP8024881 A JP 8024881A JP S57195366 A JPS57195366 A JP S57195366A
Authority
JP
Japan
Prior art keywords
inputted
switch
rotational frequency
disk
fail
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
JP56080248A
Other languages
Japanese (ja)
Other versions
JPH0677369B2 (en
Inventor
Ryuichi Naito
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic Corp
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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP56080248A priority Critical patent/JPH0677369B2/en
Publication of JPS57195366A publication Critical patent/JPS57195366A/en
Publication of JPH0677369B2 publication Critical patent/JPH0677369B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Abstract

PURPOSE:To facilitate the locking of a PLL without reference to whether a used disk is a CLV or CAV type, by simply increasing or decreasing a rotational frequency in response to a disk rotation start command. CONSTITUTION:A control circuit 10 connects a switch 12 to neither contact before a start signal is inputted. Once the start signal is inputted, the switch 12 is connected to a driving signal generating circuit 13 to simply increase the rotational frequency of a motor 2. When its final rotational frequency is st much higher than the rotational speed of a disk at the innermost circumference, the output signal of a pickup passes the lock range of a playback clock extracting PLL at any radius position without fail, so that the PLL4 is locked without fail. At this time, a detection signal is inputted from a detecting circuit 5 to the control circuit 10 and the switch 12 is changed over to the side of a phase comparator 9 to perform phase control operation thereafter by a reference clock and a playback clock.
JP56080248A 1981-05-27 1981-05-27 Recording disk rotation control device Expired - Lifetime JPH0677369B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56080248A JPH0677369B2 (en) 1981-05-27 1981-05-27 Recording disk rotation control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56080248A JPH0677369B2 (en) 1981-05-27 1981-05-27 Recording disk rotation control device

Publications (2)

Publication Number Publication Date
JPS57195366A true JPS57195366A (en) 1982-12-01
JPH0677369B2 JPH0677369B2 (en) 1994-09-28

Family

ID=13713015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56080248A Expired - Lifetime JPH0677369B2 (en) 1981-05-27 1981-05-27 Recording disk rotation control device

Country Status (1)

Country Link
JP (1) JPH0677369B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218214A2 (en) * 1985-10-03 1987-04-15 Kabushiki Kaisha Toshiba Disk apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397325A (en) * 1977-02-07 1978-08-25 Victor Co Of Japan Ltd Information recording medium reproducer
JPS5587348A (en) * 1978-12-25 1980-07-02 Victor Co Of Japan Ltd Rotation control device for information recording medium disk
JPS5787371U (en) * 1980-11-17 1982-05-29

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5397325A (en) * 1977-02-07 1978-08-25 Victor Co Of Japan Ltd Information recording medium reproducer
JPS5587348A (en) * 1978-12-25 1980-07-02 Victor Co Of Japan Ltd Rotation control device for information recording medium disk
JPS5787371U (en) * 1980-11-17 1982-05-29

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218214A2 (en) * 1985-10-03 1987-04-15 Kabushiki Kaisha Toshiba Disk apparatus
US4896311A (en) * 1985-10-03 1990-01-23 Kabushiki Kaisha Toshiba Disk apparatus

Also Published As

Publication number Publication date
JPH0677369B2 (en) 1994-09-28

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