Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1991-02-13
1993-02-02
Young, Wayne R.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4428, 369 4432, 369 54, G11B 7085
Patent
active
051843382
ABSTRACT:
In an optical disc system having a tracking actuator for driving a light spot on an optical disc in a radial direction thereof; a photodetector for detecting off-track information in respect of the light spot position; a circuit for driving the tracking actuator and track-jumping the light spot to an adjacent track; an acceleration pulse generating circuit for generating an acceleration pulse signal to accelerate the tracking actuator during a track jumping operation; a deceleration pulse generating circuit for generating a deceleration pulse signal to decelerate the tracking actuator during the track jumping operation; and a center detecting circuit for detecting a center position between adjacent tracks in response to an output signal of the photodetector, the optical disc system is characterized by including a switching device responsive to an output signal of the center detecting circuit for switching from the acceleration pulse signal to the deceleration pulse signal after a predetermined period of time beginning at the start of the track jumping operation has lapsed.
REFERENCES:
patent: 3731177 (1973-05-01), Commander et al.
patent: 4381526 (1983-04-01), McLaughlin et al.
patent: 4423497 (1983-12-01), Sugiyama et al.
patent: 4547822 (1985-10-01), Brown
patent: 4591933 (1986-05-01), Quackenbush
patent: 4607358 (1986-08-01), Maeda et al.
patent: 4677602 (1987-06-01), Okano et al.
patent: 4695989 (1987-09-01), Kimoto
patent: 4701898 (1987-10-01), Giddings
patent: 4719610 (1988-01-01), Bates et al.
patent: 4726004 (1988-02-01), Takasago et al.
patent: 4757487 (1988-07-01), Yanagida et al.
patent: 4811316 (1989-03-01), Hosoya
patent: 4817073 (1989-03-01), Suzuki
patent: 4843601 (1989-06-01), Eguchi et al.
Philips Technical Review, vol. 33, 1973, No. 7, "Control Mechanisms in the Philips VLP Record Player", pp. 190-193.
Shimoda Kyouzi
Yoshimoto Kyosuke
Mitsubishi Denki & Kabushiki Kaisha
Young Wayne R.
LandOfFree
Optical disc system with improved track jumping operation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disc system with improved track jumping operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc system with improved track jumping operation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-11210