Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1987-01-16
1992-11-03
Envall, Jr., Roy N.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4432, 369 4435, 369 4437, G11B 709
Patent
active
051612437
ABSTRACT:
In an optical recording and reproducing apparatus which forms at least first and second light spots on a track of an optical recording medium to record, reproduce or erase information, a movable range of the second light spot is limited to less than one half of a track pitch, normal to the track, from the track to prevent tracks other than a target gtrack from being miserased, misrecorded or misreproduced. When a deviation of the second light spot from the target track exceeds a predetermined amount, light emission of the second light spot is stopped to prevent a track other than the target track from being miserased, misrecorded, or misreproduced. When the deviation of the second light spot from the target track exceeds the predetermined amount, the second light spot is returned to a neutral position to prevent a track other than the target track from being miserased, misrecorded, or misreproduced.
REFERENCES:
patent: 4406000 (1983-09-01), Shoji et al.
patent: 4414655 (1983-11-01), Shoji et al.
patent: 4476555 (1984-10-01), Joichi et al.
patent: 4561080 (1985-12-01), Yamazaki
patent: 4566088 (1986-01-01), Yoshida et al.
patent: 4587644 (1986-05-01), Fujiie
patent: 4613961 (1986-09-01), Aarts
patent: 4627039 (1986-12-01), Meyer
patent: 4659972 (1987-04-01), Uchikoshi et al.
Ishibashi Kenzo
Ishida Takashi
O'Hara Shunji
Satoh Toshio
Envall Jr. Roy N.
Matsushita Electric - Industrial Co., Ltd.
Young W. R.
LandOfFree
Tracking system for an optical recording/reproducing apparatus h does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tracking system for an optical recording/reproducing apparatus h, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracking system for an optical recording/reproducing apparatus h will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2057156