JPH0366594U - - Google Patents

Info

Publication number
JPH0366594U
JPH0366594U JP1989127083U JP12708389U JPH0366594U JP H0366594 U JPH0366594 U JP H0366594U JP 1989127083 U JP1989127083 U JP 1989127083U JP 12708389 U JP12708389 U JP 12708389U JP H0366594 U JPH0366594 U JP H0366594U
Authority
JP
Japan
Prior art keywords
oscillation loop
controlled oscillation
voltage
motor
frequency
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
JP1989127083U
Other languages
Japanese (ja)
Other versions
JP2519524Y2 (en
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 filed Critical
Priority to JP1989127083U priority Critical patent/JP2519524Y2/en
Publication of JPH0366594U publication Critical patent/JPH0366594U/ja
Application granted granted Critical
Publication of JP2519524Y2 publication Critical patent/JP2519524Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Rotational Drive Of Disk (AREA)
  • Control Of Electric Motors In General (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例のブロツク回路図、
第２図は第１図におけるアクセス状態のタイムチ
ヤート、第３図は従来のＶＣＯループ・フイルタ
回路を示した回路図である。 １……回転デイスク、２……スピンドルモータ
、３……ピツクアツプ（ＰＵ）部、４……ドライ
バ、５……制御部、６……位相比較器、７……フ
イルタ、８……ＶＣＯ、９……ＣＬＶ、１０……
ＣＰＵ、１１……カツトオフ回路、１２……切替
手段。 FIG. 1 is a block circuit diagram of an embodiment of the present invention.
FIG. 2 is a time chart of the access state in FIG. 1, and FIG. 3 is a circuit diagram showing a conventional VCO loop filter circuit. DESCRIPTION OF SYMBOLS 1...Rotating disk, 2...Spindle motor, 3...Pickup (PU) unit, 4...Driver, 5...Control unit, 6...Phase comparator, 7...Filter, 8...VCO, 9 ...CLV, 10...
CPU, 11... cut-off circuit, 12... switching means.

Claims (1)

【実用新案登録請求の範囲】 回転デイスクを駆動するモータを電圧制御発振
ループにより制御し、該モータの周波数と該電圧
制御発振ループの自走周波数が同期する周波数範
囲内であるキヤプチヤーレンジ内で該モータの回
転制御を行う電圧制御発振ループ・フイルタ回路
において、 前記電圧制御発振ループは、前記キヤプチヤー
レンジを変化させるカツトオフ回路を有し、 該カツトオフ回路に、複数の信号のうち何れか
の信号により該キヤプチヤーレンジを切替える切
替手段を設ける構成とした電圧制御発振ループ・
フイルタ回路。[Claims for Utility Model Registration] A motor that drives a rotating disk is controlled by a voltage-controlled oscillation loop, and within a capture range that is within a frequency range in which the frequency of the motor and the free-running frequency of the voltage-controlled oscillation loop are synchronized. In the voltage controlled oscillation loop/filter circuit that controls the rotation of the motor, the voltage controlled oscillation loop has a cutoff circuit that changes the capture range, and the cutoff circuit is supplied with any one of a plurality of signals. A voltage controlled oscillation loop configured with a switching means for switching the capture range according to a signal.
filter circuit.
JP1989127083U 1989-10-30 1989-10-30 Voltage controlled oscillation loop filter circuit Expired - Lifetime JP2519524Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989127083U JP2519524Y2 (en) 1989-10-30 1989-10-30 Voltage controlled oscillation loop filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989127083U JP2519524Y2 (en) 1989-10-30 1989-10-30 Voltage controlled oscillation loop filter circuit

Publications (2)

Publication Number Publication Date
JPH0366594U true JPH0366594U (en) 1991-06-27
JP2519524Y2 JP2519524Y2 (en) 1996-12-04

Family

ID=31674866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989127083U Expired - Lifetime JP2519524Y2 (en) 1989-10-30 1989-10-30 Voltage controlled oscillation loop filter circuit

Country Status (1)

Country Link
JP (1) JP2519524Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005286820A (en) * 2004-03-30 2005-10-13 Vistapoint Technology Inc Monitor system
JP2006109114A (en) * 2004-10-06 2006-04-20 Hitachi Ltd Video data compression device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622392U (en) * 1985-06-18 1987-01-08
JPH01253832A (en) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd Tracking controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622392U (en) * 1985-06-18 1987-01-08
JPH01253832A (en) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd Tracking controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005286820A (en) * 2004-03-30 2005-10-13 Vistapoint Technology Inc Monitor system
JP2006109114A (en) * 2004-10-06 2006-04-20 Hitachi Ltd Video data compression device

Also Published As

Publication number Publication date
JP2519524Y2 (en) 1996-12-04

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