JPS5764354A - Tape driving motor controlling circuit of video tape recorder - Google Patents

Tape driving motor controlling circuit of video tape recorder

Info

Publication number
JPS5764354A
JPS5764354A JP55130086A JP13008680A JPS5764354A JP S5764354 A JPS5764354 A JP S5764354A JP 55130086 A JP55130086 A JP 55130086A JP 13008680 A JP13008680 A JP 13008680A JP S5764354 A JPS5764354 A JP S5764354A
Authority
JP
Japan
Prior art keywords
phase
gain
motor
error voltage
controlling circuit
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
JP55130086A
Other languages
Japanese (ja)
Other versions
JPS6028067B2 (en
Inventor
Masao Ishikura
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP55130086A priority Critical patent/JPS6028067B2/en
Publication of JPS5764354A publication Critical patent/JPS5764354A/en
Publication of JPS6028067B2 publication Critical patent/JPS6028067B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head

Landscapes

  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To shorten a locking time in case of start without increasing the jitters related to the gain of a phase control loop system, at the stationary time, by switching the gain of the phase control loop system of a motor controlling circuit only for a prescribed time after starting the motor. CONSTITUTION:A signal (d) showing a rotation speed and phase of a motor 6 is discriminated 8 to frequency error voltage (e), is amplified 9, and after that, motor driving voltage (c) is fetched through an adder 4. Furthermore, the signal (d) is phase-compared 2 with a reference signal (a), phase error voltage (b) is fetched, is amplified 3, and after that, is superposed on the motor driving voltage (c) through the adder 4. For one second after start, the phase error voltage (b) is short-circuited 12. After 1 second, the phase error voltage is returned to a passage 12, simultaneously the gain of the amplifier 3 is increased, the gain of the amplifier 9 is decreased, a phase syncronizing loop B is intensified, a speed control loop A is weakened, and the locking operation is controllably executed. After 2 seconds, the gain of the amplifiers 3, 9 is returned to each stationary value.
JP55130086A 1980-09-20 1980-09-20 Video tape recorder tape drive motor control circuit Expired JPS6028067B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55130086A JPS6028067B2 (en) 1980-09-20 1980-09-20 Video tape recorder tape drive motor control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55130086A JPS6028067B2 (en) 1980-09-20 1980-09-20 Video tape recorder tape drive motor control circuit

Publications (2)

Publication Number Publication Date
JPS5764354A true JPS5764354A (en) 1982-04-19
JPS6028067B2 JPS6028067B2 (en) 1985-07-02

Family

ID=15025633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55130086A Expired JPS6028067B2 (en) 1980-09-20 1980-09-20 Video tape recorder tape drive motor control circuit

Country Status (1)

Country Link
JP (1) JPS6028067B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103885A (en) * 1981-12-15 1983-06-21 Canon Inc Controlling method for rotor
JPS58190293A (en) * 1982-04-26 1983-11-07 Sanyo Electric Co Ltd Speed control circuit for motor
JPS59200589A (en) * 1983-04-26 1984-11-13 Mitsumi Electric Co Ltd Magnetic video recording and reproducing device
JPS6261581U (en) * 1985-10-02 1987-04-16
JPH04193086A (en) * 1990-11-26 1992-07-13 Mitsubishi Electric Corp Motor controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0328386Y2 (en) * 1986-05-22 1991-06-18

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58103885A (en) * 1981-12-15 1983-06-21 Canon Inc Controlling method for rotor
JPH0444512B2 (en) * 1981-12-15 1992-07-21 Canon Kk
JPS58190293A (en) * 1982-04-26 1983-11-07 Sanyo Electric Co Ltd Speed control circuit for motor
JPS59200589A (en) * 1983-04-26 1984-11-13 Mitsumi Electric Co Ltd Magnetic video recording and reproducing device
JPS6261581U (en) * 1985-10-02 1987-04-16
JPH057830Y2 (en) * 1985-10-02 1993-02-26
JPH04193086A (en) * 1990-11-26 1992-07-13 Mitsubishi Electric Corp Motor controller

Also Published As

Publication number Publication date
JPS6028067B2 (en) 1985-07-02

Similar Documents

Publication Publication Date Title
JPS5764354A (en) Tape driving motor controlling circuit of video tape recorder
US4864200A (en) Motor speed control apparatus
JPS5730474A (en) Slow-motion reproduction system of magnetic reproducing device
JPS5786159A (en) Magnetic reproducing device
JPS55157149A (en) Magnetic recording and reproducing device
JPS5542331A (en) Recording bias circuit of tape recorder
US4496998A (en) Video tape recorder with delayed control signal recording upon restart
JPS5730473A (en) Variable-speed reproducing device of magnetic reproducing device
JPS5727408A (en) Recording and reproducing device of magnetic tape
JPS5648786A (en) Processor for color video signal
JPS5625272A (en) Rotary phase modification system of vtr
JPS5710587A (en) Magnetic recording and reproducing device
KR920005762Y1 (en) Controlling pulse compensating apparatus
JPS5744247A (en) Continuous reproducing method using two reproducers
JPS55114082A (en) Magnetic recording and reproducing device
GB964572A (en) Improvements in signal processing
KR920007004Y1 (en) Relative-velocity of drum control circuit
JPS5661056A (en) Magnetic recording and reproducing device
JP2900568B2 (en) Video recording and playback device
JPS55114083A (en) Magnetic recording and reproducing device
JPS5755779A (en) Motor servo circuit
JPS56123178A (en) Correcting device for synchronizing signal frequency
JPS55150792A (en) Phase control circuit
JPS6479956A (en) Magnetic recording and reproducing device
JPS5671842A (en) Magnetic recording and playback device