Dynamic information storage or retrieval – Dynamic mechanism subsystem – Access of multiple storage elements
Patent
1996-09-10
1999-03-09
Cao, Allen T.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Access of multiple storage elements
369 36, 369 771, G11B 1704, G11B 1722, G11B 3302
Patent
active
058810455
ABSTRACT:
A disk player has a disk drive mechanism with rollers engaging a perimeter surfaces of a disk. Two rollers engage an upper surface and two roller engage a lower surface. One of the rollers is coupled to a drive source to rotate the disk. Disks are transported upon carriages which are stored in a magazine. The center of each disk is supported upon an idler turntable disposed on a carriage. A selected carriage is moved by a transport mechanism from the magazine to place a disk thereon engagement with the rollers. The upper two rollers bias the center aperture of the disk downward upon the idler turntable as the two lower rollers act as pivots. A stable triangular region of support thus is defined by the two lower rollers and the idler turntable. An optical head is mounted in a fixed position within the chassis and the rollers and turntable are moved to advance the disk over the optical head for scanning. The disk is rotatable by the disk drive mechanism while the center aperture thereof overlaps other disks in the magazine thus allowing a compact configuration to be achieved. The transport mechanism also transports the selected to an eject position for loading and unloading.
REFERENCES:
patent: 4539671 (1985-09-01), Higashihara
patent: 4782473 (1988-11-01), Masaki
patent: 5123001 (1992-06-01), Nakamichi et al.
patent: 5130959 (1992-07-01), Wakatsuki et al.
patent: 5544148 (1996-08-01), Nakamichi
patent: 5561658 (1996-10-01), Nakamichi et al.
Cao Allen T.
Nakamichi Corp.
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