Lift device of laser disc player

Details Lift device of laser disc player Lift device of laser disc player

1993-12-28

1995-10-24

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

369264, G11B 17028

Patent

active

054616069

ABSTRACT:
A lift device of a laser disc player reliably maintaining a predetermined gap between an objective lens of a pick-up unit and a disc. This lift device drives its lift mechanism by rotating a plurality of cam gears using the rotational force of the existing loading motor of the disc player without addition of drive means. The lift device comprises a spindle motor mounted on a bottom center of a chassis and rotating a disc, a turntable rotatably mounted on a frame and seating the disc thereon, a pick-up unit provided with an objective lens, a rack for moving the pick-up unit in a radial direction of the disc, a loading motor generating a rotational force used for driving a plurality of cam gears, and a lift mechanism for maintaining a predetermined gap between the objective lens of the pick-up unit and the disc.

REFERENCES:
patent: 4918678 (1990-04-01), Dolby
patent: 4941140 (1990-07-01), Ono et al.

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