Disk transferring device

Details Disk transferring device Disk transferring device

1996-03-05

1998-08-04

Levy, Stuart S.

Dynamic information storage or retrieval

With particular cabinet structure

With mechanism to place disc on a turntable

G11B 3302

Patent

active

057904960

ABSTRACT:
A disk playback device precisely positions disks of various sizes at playback, store, and eject positions. A disk is inserted between two longitudinal disk guides, movable in a direction perpendicular to a direction of transport of the disk. An indicator indicates the amount of separation of the two disk guides caused by insertion, thereby indicating the size of the disk. A belt revolves along one of the disk guides frictionally engaging an edge of the disk and rolling the disk along the opposite disk guide. A flap at an insertion aperture is dropped onto the surface of the disk as it is drawn into the disk player until the flap drops off the trailing edge of the disk indicating the disk is at a registration position. A controller which counts pulses from an encoder connected to the drive mechanism to determine the accruing distance of the disk from the registration position. The controller stops the belt after a specified number of pulses to position the disk center at the playback position. The number of pulses depends on the size of the disk since the position of the center of the disk at the registration position depends on the disk size. The disk is transported to a storage position and an eject position by similarly counting pulses. By counting pulses from a single sensed registration position, the need for separate sensors to indicate the separate playback, store, and eject positions is avoided.

REFERENCES:
patent: 4539670 (1985-09-01), Inaba et al.
patent: 4682320 (1987-07-01), d'Alayer de Costemore d'Arc
patent: 4995027 (1991-02-01), Aoyagi et al.
patent: 5136570 (1992-08-01), Takai et al.
patent: 5164934 (1992-11-01), Kase et al.
patent: 5493551 (1996-02-01), Kido

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