JPS648887A - Rotary phase controller - Google Patents

Rotary phase controller

Info

Publication number
JPS648887A
JPS648887A JP62163351A JP16335187A JPS648887A JP S648887 A JPS648887 A JP S648887A JP 62163351 A JP62163351 A JP 62163351A JP 16335187 A JP16335187 A JP 16335187A JP S648887 A JPS648887 A JP S648887A
Authority
JP
Japan
Prior art keywords
signal
phase
reference signal
cpu14
rotary
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
JP62163351A
Other languages
Japanese (ja)
Other versions
JP2540866B2 (en
Inventor
Tadafusa Tomitaka
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.)
Sony Corp
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
Priority to JP62163351A priority Critical patent/JP2540866B2/en
Publication of JPS648887A publication Critical patent/JPS648887A/en
Application granted granted Critical
Publication of JP2540866B2 publication Critical patent/JP2540866B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Electric Motors In General (AREA)

Abstract

PURPOSE:To improve response performance of a phase servo considerably through a simple structure, by locking in a servo system with the period of a phase reference signal. CONSTITUTION:Rotary phase of a drum motor 5 directly coupled with a rotary drum 3 is controlled such that it will be synchronous with a reference signal produced by frequency dividing a recording vertical synchronization signal (V-SYNC, 60Hz) through a 1/2 frequency divider 10. An interruption controller 13 provides an interruption signal IRQ to CPU14 every time when the reference signal is inputted. CPU14 calculates a phase difference and a speed difference based on a program in ROM 16, and provides an error signal (motor control signal) through a D/A converter 17. The error signal is amplified through a drive amplifier 18 and applied onto the drum motor 5.
JP62163351A 1987-06-30 1987-06-30 Rotational phase controller Expired - Lifetime JP2540866B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163351A JP2540866B2 (en) 1987-06-30 1987-06-30 Rotational phase controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163351A JP2540866B2 (en) 1987-06-30 1987-06-30 Rotational phase controller

Publications (2)

Publication Number Publication Date
JPS648887A true JPS648887A (en) 1989-01-12
JP2540866B2 JP2540866B2 (en) 1996-10-09

Family

ID=15772234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163351A Expired - Lifetime JP2540866B2 (en) 1987-06-30 1987-06-30 Rotational phase controller

Country Status (1)

Country Link
JP (1) JP2540866B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100864139B1 (en) * 2000-05-19 2008-10-16 티버 발로그 Method and apparatus for displaying 3d images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100864139B1 (en) * 2000-05-19 2008-10-16 티버 발로그 Method and apparatus for displaying 3d images

Also Published As

Publication number Publication date
JP2540866B2 (en) 1996-10-09

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term