JPS648887A - Rotary phase controller - Google Patents
Rotary phase controllerInfo
- 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
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.
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)
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 |
-
1987
- 1987-06-30 JP JP62163351A patent/JP2540866B2/en not_active Expired - Lifetime
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU510555B2 (en) | Velocity and phase control for disc play / record system | |
GB1504771A (en) | Speed control systems | |
GB1419197A (en) | A-c adjustable speed motor drive system | |
GB2176033B (en) | Resultant velocity control for members capable of being driven in two component directions, simultaneously | |
CA2009787A1 (en) | Sub-Tau Phase Modulation | |
GB1301094A (en) | Servo system | |
JPS648887A (en) | Rotary phase controller | |
GB1448932A (en) | Servo system | |
JPS5412816A (en) | Isolinear velocity controller of rotary recording media | |
JPS5764350A (en) | Tape running system | |
JPS5517270A (en) | Starting system for ac motor | |
JPS57120269A (en) | Disk recording and reproducing device | |
JPS56157291A (en) | Control system for motor | |
JPS5389407A (en) | Tracking controller for magnetic recorder/reproducer | |
JPS57151287A (en) | Controller for motor | |
JPS641492A (en) | Rotary phase controller | |
JPS56114173A (en) | Motor control circuit | |
JPS57186878A (en) | Head switching signal forming circuit | |
JPS54125383A (en) | Speed controller | |
JPS6482010A (en) | Image recording device | |
JPS56153412A (en) | Rotation control device for rotator | |
JPS5752919A (en) | Speed controlling system | |
JPS56165950A (en) | Phase adjuster for vtr | |
JPS55140383A (en) | Jitter servo unit of video disc player | |
JPS5291277A (en) | Apparatus for equalizing operation speed |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |