Shutter controller, disc device, and computer program for...

Details Shutter controller, disc device, and computer program for... Shutter controller, disc device, and computer program for...

2011-01-25

2011-01-25

Blouin, Mark (Department: 2627)

Dynamic optical information storage or retrieval

Particular cabinet structure for optical media

Details of exterior front face

Reexamination Certificate

active

07877762

ABSTRACT:
During a process of closing of a shutter of a disk device, a position of the shutter is detected. A first shutter position indicator indicative of a first position of the shutter and a second shutter position indicator indicative of a second position, which is immediately before the first position, are calculated. Whether a disk is pinched by the shutter is determined based on comparison of a predetermined threshold and the difference between the first shutter position indicator and the second shutter position indicator.

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U.S. Appl. No. 11/886,881, filed Sep. 21, 2007, Matsumoto et al.
Hiroyuki Matsumoto Et Al., USPTO Notice of Allowance, U.S. Appl. No. 11/886,881, Oct. 25, 2010, 9 pages.

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