Disk playback device with position error correction device

Details Disk playback device with position error correction device Disk playback device with position error correction device

1996-03-05

1999-03-16

Letscher, George J.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 2504

Patent

active

058838767

ABSTRACT:
A disk player supports a disk between two opposing longitudinal disk guides, one with a moving belt running along it. The belt frictionally engages an edge of the disk to roll the disk along the opposite guide. Disks are inserted through an insertion aperture, normally covered by a flap. When the player is ready to receive a disk, the flap opens outwardly. The disk is inserted between the guides through the aperture. The guides separate to accommodate the disk causing the flap to drop onto the back of the disk. As the disk moves, the flap rides the back face of the disk until it falls off a trailing edge, registering a reference position of the disk. Encoder pulses indicate increments of advancement of the belt position. The pulses are counted after passing the reference position, to determine when the disk has arrived at the playback position. A turntable is moved toward the disk until a spindle inserts into a center hole of the disk. If the spindle strikes the disk and forces it upward, the disk presses a damper to an irregular position which is detected to indicate misalignment of the disk. In response, the disk is moved back until it is underneath the flap. The flap is dropped onto the back of the disk and the disk transported back to the playback position. This process is repeated until the misalignment is corrected or a predetermined number of cycles fails to correct it.

REFERENCES:
patent: 5388094 (1995-02-01), Park
patent: 5513157 (1996-04-01), Saito et al.
patent: 5583834 (1996-12-01), Kanada et al.
patent: 5587982 (1996-12-01), Choi

Affiliated with

Also associated with

Rating

Disk playback device with position error correction device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk playback device with position error correction device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk playback device with position error correction device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-823444