JPS5710587A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS5710587A
JPS5710587A JP8432380A JP8432380A JPS5710587A JP S5710587 A JPS5710587 A JP S5710587A JP 8432380 A JP8432380 A JP 8432380A JP 8432380 A JP8432380 A JP 8432380A JP S5710587 A JPS5710587 A JP S5710587A
Authority
JP
Japan
Prior art keywords
phase
speed
controlling circuit
signal generator
reference signal
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
JP8432380A
Other languages
Japanese (ja)
Other versions
JPS6366472B2 (en
Inventor
Shingi Yokobori
Masashi Urayama
Yoshiaki Igarashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8432380A priority Critical patent/JPS5710587A/en
Priority to US06/275,027 priority patent/US4484235A/en
Publication of JPS5710587A publication Critical patent/JPS5710587A/en
Publication of JPS6366472B2 publication Critical patent/JPS6366472B2/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
    • 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
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
    • G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads
    • G11B15/4731—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation
    • 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
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To prevent rolling of a reproduced picture plane, by phase-shifting a phase reference of a reference signal generator and cancelling a phase difference, in accordance with a rotary phase difference which is caused by a variation of speed of a cylinder motor, in case when a tape runs intermittently. CONSTITUTION:A cylinder motor 15 for making a tape run is subjected to control of phase and speed through a speed controlling circuit 17 by an output of a phase comparing circuit 20 comparing the phase difference of a phase detector 18 plus a reference signal generator 19, and an output of a speed detector 16. Phase of an output of the reference signal generator 19 is controlled by a phase controlling circuit 22. When a command for making a tape run intermittently is inputted to the phase controlling circuit 22 and the speed controlling circuit 17 from a terminal 21 as shown by A, speed of the cylinder motor 15 is varied as shown by B, and the rotary phase is increased as shown by C, but the phase controlling circuit 22 is operated, the output phase of the reference signal generator 19 is phase-shifted as shown D and E, and after a speed variation has been set, a phase variation does not occur. In this way, the synchronization of phase is always kept and the rolling of a picture image is prevented.
JP8432380A 1980-06-19 1980-06-20 Magnetic recording and reproducing device Granted JPS5710587A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8432380A JPS5710587A (en) 1980-06-20 1980-06-20 Magnetic recording and reproducing device
US06/275,027 US4484235A (en) 1980-06-19 1981-06-18 Phase control circuit and magnetic reproducing apparatus using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8432380A JPS5710587A (en) 1980-06-20 1980-06-20 Magnetic recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS5710587A true JPS5710587A (en) 1982-01-20
JPS6366472B2 JPS6366472B2 (en) 1988-12-20

Family

ID=13827298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8432380A Granted JPS5710587A (en) 1980-06-19 1980-06-20 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS5710587A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185060A (en) * 1983-04-05 1984-10-20 Sanyo Electric Co Ltd Control circuit of rotary head
JPS6261581U (en) * 1985-10-02 1987-04-16
JPS63202285A (en) * 1987-02-16 1988-08-22 Sanyo Electric Co Ltd Rotation controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185060A (en) * 1983-04-05 1984-10-20 Sanyo Electric Co Ltd Control circuit of rotary head
JPS6261581U (en) * 1985-10-02 1987-04-16
JPH057830Y2 (en) * 1985-10-02 1993-02-26
JPS63202285A (en) * 1987-02-16 1988-08-22 Sanyo Electric Co Ltd Rotation controller

Also Published As

Publication number Publication date
JPS6366472B2 (en) 1988-12-20

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