Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1980-11-17
1983-07-19
Cardillo, Jr., Raymond F.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
364 44, G11B 708, G11B 712, G11B 2112
Patent
active
043947557
ABSTRACT:
An optical apparatus (1) for reading a recording track on an optical disc (3) comprises an objective (6) supported by a combined bearing arrangement which permits translations (12) of the objective for focussing a light beam (2) on the disc and pivotal movements (13, 14) for following the recording track in a radial and eventually also a tangential direction. The combined bearing arrangement comprises a plain bearing with a stationary member (17) having a convex outer surface (18) and a cylindrical moving member (19) which relative to the stationary member moves in a sliding and a pivoting fashion.
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Briody Thomas A.
Cardillo, Jr. Raymond F.
Mayer Robert T.
Tamoshunas Algy
U.S. Philips Corporation
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