Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1989-07-05
1991-11-05
Richardson, Robert L.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369133, 369240, G11B 700
Patent
active
050635522
ABSTRACT:
A control system is provided for an optical disk driving apparatus adapted to rotate an optical disk having a plurality of tracks, and which is adapted, during the rotation of the disk, to perform optical recording and/or reproduction of information for a track which has been accessed with a light beam. The control system changes the speed f of recording/reproduction of information in accordance with the radius r of a track to be accessed in such a manner that the tracks are divided into a plurality of concentric annular blocks each having different approximate radii, and the same speed f of the recording/reproduction of information is allocated to the tracks in the same block but different speeds f of recording and/or reproduction of information are allocated to the respective blocks. The controlling system changes the speed n of rotation of the optical disk with respect to the radius r of the track to be accessed and the speed f of record/reproduction of information allocated to the block including the track to be accessed so that f/(n.multidot.r) is constant.
REFERENCES:
patent: 4514771 (1985-04-01), Stark et al.
patent: 4530018 (1985-07-01), Hoshino
patent: 4750059 (1988-06-01), Syracuse
patent: 4780866 (1988-10-01), Syracuse
Richardson Robert L.
Ricoh & Company, Ltd.
LandOfFree
Optical disk apparatus with data transfer rate and rotational sp 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 disk apparatus with data transfer rate and rotational sp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk apparatus with data transfer rate and rotational sp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-503798