Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1982-02-17
1984-02-14
McElheny, Jr., Donald
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 44, G11B 700
Patent
active
044320825
ABSTRACT:
A high density optical storage system employing a laser beam for reading data in a track on a rotating optical disk containing a large number of closely spaced concentric tracks. When a long seek operation is to be provided, track following is suspended and a linear motor drives a galvanometer-controlled mirror to a new position corresponding to a new track called for by the long seek operation. Arrival at the new position is determined by detecting when both the velocity of the linear motor and the difference between current and desired positions are below predetermined maximum values indicating that a stable condition has been reached, after which track following operation is resumed. The linear motor also operates during track following in response to the detected angular position of the mirror so as to cause movement of the mirror in a direction which reduces the mirror deflection required to maintain the beam accurately following the track.
REFERENCES:
patent: 3854015 (1974-12-01), Janssen
patent: 4037252 (1977-07-01), Janssen
patent: 4057832 (1977-11-01), Kappert
patent: 4106058 (1978-08-01), Romeas et al.
patent: 4138663 (1979-02-01), Lehureau et al.
patent: 4142209 (1979-02-01), Hedlund et al.
patent: 4199820 (1980-04-01), Ohtake et al.
patent: 4236232 (1980-11-01), Jansen et al.
patent: 4330880 (1982-05-01), Van Dijk
patent: 4338682 (1982-07-01), Hosaka et al.
patent: 4363116 (1982-12-01), Kleuters et al.
patent: 4375091 (1983-02-01), Dakin et al.
Paul M. Trethewey, "An Infra-red Based Beam Scanner Position Sensor", Wescon Electronic Show & Convention, Sep. 15-17, 1981, Brooks Hall & Civic Auditorium, Hilton Hotel, San Francisco, Ca., Region 6 IEEE Student Paper Competition, pp. 1-8.
Hsieh Der-Chang
LaBudde Edward V.
Burroughs Corporation
Cass Nathan
McElheny Jr. Donald
Peterson Kevin R.
Rasmussen David G.
LandOfFree
Optical memory system having a long seek capability 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 memory system having a long seek capability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical memory system having a long seek capability will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2378760