IT7920587A0 - Apparecchiatura di servocontrollo della velocita' e fase di una testina magnetica per un registratore video a nastro. - Google Patents

Apparecchiatura di servocontrollo della velocita' e fase di una testina magnetica per un registratore video a nastro.

Info

Publication number
IT7920587A0
IT7920587A0 IT7920587A IT2058779A IT7920587A0 IT 7920587 A0 IT7920587 A0 IT 7920587A0 IT 7920587 A IT7920587 A IT 7920587A IT 2058779 A IT2058779 A IT 2058779A IT 7920587 A0 IT7920587 A0 IT 7920587A0
Authority
IT
Italy
Prior art keywords
phase
speed
magnetic head
control equipment
servo control
Prior art date
Application number
IT7920587A
Other languages
English (en)
Other versions
IT1111879B (it
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of IT7920587A0 publication Critical patent/IT7920587A0/it
Application granted granted Critical
Publication of IT1111879B publication Critical patent/IT1111879B/it

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/911—Phase locked loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/912—Pulse or frequency counter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
IT20587/79A 1978-02-27 1979-02-27 Apparecchiatura di servocontrollo della velocita' e fase di una testina magnetica per un registratore video a nastro IT1111879B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2173278A JPS54114691A (en) 1978-02-27 1978-02-27 Servo circuit

Publications (2)

Publication Number Publication Date
IT7920587A0 true IT7920587A0 (it) 1979-02-27
IT1111879B IT1111879B (it) 1986-01-13

Family

ID=12063240

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20587/79A IT1111879B (it) 1978-02-27 1979-02-27 Apparecchiatura di servocontrollo della velocita' e fase di una testina magnetica per un registratore video a nastro

Country Status (9)

Country Link
US (1) US4259698A (it)
JP (1) JPS54114691A (it)
AT (1) AT377148B (it)
CA (1) CA1127295A (it)
DE (1) DE2907527A1 (it)
FR (1) FR2418512A1 (it)
GB (1) GB2018469B (it)
IT (1) IT1111879B (it)
NL (1) NL7901554A (it)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2059107B (en) * 1979-07-12 1983-06-02 Universal Pioneer Corp Tangential servo control signal generating device
JPS5614787A (en) * 1979-07-18 1981-02-13 Sony Corp Video signal reproduction system
JPS5669981A (en) * 1979-11-12 1981-06-11 Sony Corp Phase servo circuit
US4368492A (en) * 1980-04-08 1983-01-11 Rca Corporation Vertical sync independent digital skew servo
US4371902A (en) * 1980-06-30 1983-02-01 International Business Machines Corporation Disk initialization method
JPS5753880A (en) * 1980-09-12 1982-03-31 Victor Co Of Japan Ltd Detector of periodic signal
JPS57211612A (en) * 1981-06-23 1982-12-25 Sony Corp Phase servo circuit
US4449082A (en) * 1981-12-17 1984-05-15 Webster Douglas G Motor speed control system
JPS58211217A (ja) * 1982-06-03 1983-12-08 Sony Corp 回転体の位相制御装置
AU570922B2 (en) * 1982-06-30 1988-03-31 Sony Corporation Digital servo circuit for motor control
EP0119199B1 (en) * 1982-09-17 1990-02-28 Ampex Corporation Method and apparatus for producing an artificial vertical synchronizing signal for video tape recording
CA1210149A (en) * 1982-09-28 1986-08-19 Shigeru Tajima Digital capstan servo circuit
JPS6063772A (ja) * 1983-09-19 1985-04-12 Olympus Optical Co Ltd デ−タ書込エリア信号発生方法および装置
JPS60106381A (ja) * 1983-11-14 1985-06-11 Victor Co Of Japan Ltd 磁気記録再生装置のモ−タサ−ボ回路
IL78024A0 (en) * 1985-04-01 1986-07-31 Cemitronics Inc Digital pulsed servo control system
JPS61288788A (ja) * 1985-06-14 1986-12-18 Victor Co Of Japan Ltd モ−タの回転位相制御方式
US4815063A (en) * 1985-09-13 1989-03-21 Yamaha Corporation Disc motor control circuit for controlling the rotation of a disc in a disc playing device
JPS62131777A (ja) * 1985-11-28 1987-06-15 Seiko Epson Corp モ−タ速度制御装置
US4933985A (en) * 1986-05-21 1990-06-12 Canon Kabushiki Kaisha Rotation drive device
US5345532A (en) * 1986-05-21 1994-09-06 Canon Kabushiki Kaisha Rotation drive device
KR930001704B1 (ko) * 1988-05-18 1993-03-11 삼성전자 주식회사 디지탈 오디오 테이프 레코더의 드럼 무조정 자동 위상 제어회로
JPH03266248A (ja) * 1990-03-15 1991-11-27 Sony Corp 磁気再生装置
US5122719A (en) * 1991-02-27 1992-06-16 Eastman Kodak Company Method and apparatus for reducing recurrent fluctuations in motor torque
US5276569A (en) * 1991-06-26 1994-01-04 Digital Equipment Corporation Spindle controller with startup correction of disk position
US5554916A (en) * 1992-11-30 1996-09-10 Nidec Corporation Method of starting a sensorless motor
US5448428A (en) * 1993-04-23 1995-09-05 Quantum Corporation Phase locking a disk drive spindle to a reference signal
US5438464A (en) * 1993-04-23 1995-08-01 Quantum Corporation Synchronization of multiple disk drive spindles

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564368A (en) * 1968-01-10 1971-02-16 Gen Electric Spindle speed control monitor
US3643012A (en) * 1970-02-16 1972-02-15 Ampex Rapid frame synchronization of video tape reproduce signals
US3686469A (en) * 1970-04-02 1972-08-22 Ampex Steady state phase error correction circuit
NL7112272A (it) * 1971-09-06 1973-03-08
GB1426820A (en) * 1972-04-05 1976-03-03 Hitachi Electronics Digital control system
JPS5148045B2 (it) * 1972-06-05 1976-12-18
US3959815A (en) * 1974-01-28 1976-05-25 Basf Aktiengesellschaft Arrangements for time base error compensation
US3900796A (en) * 1974-03-07 1975-08-19 Sperry Rand Corp Rotational speed monitor
US3900890A (en) * 1974-05-06 1975-08-19 Sperry Rand Corp Speed tolerant recording and recovery system
US3946293A (en) * 1974-09-13 1976-03-23 Conco Inc. Thyristor control system
US4047231A (en) * 1976-03-19 1977-09-06 Ampex Corporation High stability digital head servo for video recorders
JPS5941338B2 (ja) * 1976-05-10 1984-10-06 日本電気株式会社 クロツクパルス再生回路

Also Published As

Publication number Publication date
DE2907527C2 (it) 1990-04-05
FR2418512A1 (fr) 1979-09-21
GB2018469A (en) 1979-10-17
CA1127295A (en) 1982-07-06
ATA149579A (de) 1984-06-15
US4259698A (en) 1981-03-31
NL7901554A (nl) 1979-08-29
JPS54114691A (en) 1979-09-06
DE2907527A1 (de) 1979-09-06
FR2418512B1 (it) 1983-11-25
GB2018469B (en) 1982-08-25
IT1111879B (it) 1986-01-13
AT377148B (de) 1985-02-11

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