Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1983-09-08
1985-12-24
McElheny, Jr., Donald
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
G11B 700
Patent
active
045610797
ABSTRACT:
A support structure of an optical part placed in an optical path of a light beam of a system for optically reading out recorded information, such as a video disc player system, including a first servo control system incorporating the optical part and a second servo control system respectively controlling a direction of the light beam in a pair of directions which are perpendicular to each other, the support structure supporting the optical part via an elastic member for permitting a movement of the optical part in accordance with an operation of the first servo control system. The elastic member has a configuration which is suited for selecting a resonant frequency of a movement of the optical part which causes a movement of the light beam in accordance with the operation of the second servo control system while allowing a normal movement of the optical part in accordance with the operation of the first servo control system, thereby to set the resonant frequency in a frequency range which is controllable by the operation of the second servo control system and to eliminate an undesirable result of the movement of the optical part other than the normal movement controlled by the first servo control system.
REFERENCES:
patent: 4367543 (1983-01-01), Araki et al.
patent: 4376572 (1983-03-01), Gijzen
patent: 4462096 (1984-07-01), Kusaka
patent: 4482986 (1984-11-01), Noda et al.
McElheny Jr. Donald
Pioneer Electronic Corporation
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