JPS5856258A - 再生速度制御装置 - Google Patents

再生速度制御装置

Info

Publication number
JPS5856258A
JPS5856258A JP15370781A JP15370781A JPS5856258A JP S5856258 A JPS5856258 A JP S5856258A JP 15370781 A JP15370781 A JP 15370781A JP 15370781 A JP15370781 A JP 15370781A JP S5856258 A JPS5856258 A JP S5856258A
Authority
JP
Japan
Prior art keywords
signal
pulse width
synchronization signal
speed
detection
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
JP15370781A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0327986B2 (enrdf_load_stackoverflow
Inventor
Hiroyuki Kimura
寛之 木村
Yoshimi Iso
佳実 磯
Shigeki Inoue
茂樹 井上
Takashi Takeuchi
崇 竹内
Shinichi Ohashi
伸一 大橋
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15370781A priority Critical patent/JPS5856258A/ja
Priority to GB08227632A priority patent/GB2109593B/en
Priority to US06/428,209 priority patent/US4532561A/en
Priority to EP82109013A priority patent/EP0075948B1/en
Priority to AT82109013T priority patent/ATE24981T1/de
Priority to DE8282109013T priority patent/DE3275144D1/de
Publication of JPS5856258A publication Critical patent/JPS5856258A/ja
Publication of JPH0327986B2 publication Critical patent/JPH0327986B2/ja
Granted 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
    • G11B19/24—Arrangements for providing constant relative speed between record carrier and head

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Rotational Drive Of Disk (AREA)
JP15370781A 1981-09-30 1981-09-30 再生速度制御装置 Granted JPS5856258A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP15370781A JPS5856258A (ja) 1981-09-30 1981-09-30 再生速度制御装置
GB08227632A GB2109593B (en) 1981-09-30 1982-09-28 Playback speed control system
US06/428,209 US4532561A (en) 1981-09-30 1982-09-29 Playback speed control system
EP82109013A EP0075948B1 (en) 1981-09-30 1982-09-29 Playback speed control system
AT82109013T ATE24981T1 (de) 1981-09-30 1982-09-29 Vorrichtung zum regeln der abtastgeschwindigkeit.
DE8282109013T DE3275144D1 (en) 1981-09-30 1982-09-29 Playback speed control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15370781A JPS5856258A (ja) 1981-09-30 1981-09-30 再生速度制御装置

Publications (2)

Publication Number Publication Date
JPS5856258A true JPS5856258A (ja) 1983-04-02
JPH0327986B2 JPH0327986B2 (enrdf_load_stackoverflow) 1991-04-17

Family

ID=15568337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15370781A Granted JPS5856258A (ja) 1981-09-30 1981-09-30 再生速度制御装置

Country Status (1)

Country Link
JP (1) JPS5856258A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5923628A (en) * 1996-08-29 1999-07-13 Nec Corporation Disk rotational velocity controlling circuit
US6118393A (en) * 1997-06-20 2000-09-12 Nec Corporation EFM signal frame period detecting circuit, and system for controlling the frequency of the bit synchronizing clock signal used for reproducing the EFM signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5923628A (en) * 1996-08-29 1999-07-13 Nec Corporation Disk rotational velocity controlling circuit
US6118393A (en) * 1997-06-20 2000-09-12 Nec Corporation EFM signal frame period detecting circuit, and system for controlling the frequency of the bit synchronizing clock signal used for reproducing the EFM signal
DE19827723B4 (de) * 1997-06-20 2007-08-02 Nec Electronics Corp., Kawasaki Erfassungsschaltung für EFM-Signalrahmenperioden und System zum Steuern der Frequenz des Bit-Synchronisationstaktsignals zur Wiedergabe des EFM-Signals

Also Published As

Publication number Publication date
JPH0327986B2 (enrdf_load_stackoverflow) 1991-04-17

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