Dynamic information storage or retrieval – Dynamic mechanism subsystem – Access of multiple storage elements
Patent
1988-10-27
1992-04-14
Shoop, Jr., William M.
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Access of multiple storage elements
369199, 369 752, G11B 100, G11B 2104
Patent
active
051054183
ABSTRACT:
A disk drive according to a first embodiment includes a pickup movable along a radial direction of the disk and a reversing mechanism for moving the pickup from one side of the disk to the other side by rotating the pickup about an axis corresponding to the radial direction of the disk. In a second embodiment, there can be only one pickup which can reverse sides of the disk or a pickup on each side of the disk. The pickup(s) are moved along guide rails on either side of the disk and the guide rails are supported by rotatable base members. A linking arm links the two base members together so that rotation of one will cause rotation of the other. In a third embodiment, a pickup and a rack are supported on a slider for moving the pickup along the surface of a disk. The rack has three toothed surfaces including first, second, and third surfaces for engaging first, second and third feed screws, respectively. In the fourth embodiment, a disk player includes either a single, reversible pickup or a pickup on each side of a disk.
REFERENCES:
patent: 4566087 (1986-01-01), Kraft
patent: 4771416 (1988-09-01), Ishikashi et al.
patent: 4839881 (1989-06-01), Takahara et al.
patent: 4911324 (1989-03-01), Ikedo et al.
patent: 4949328 (1990-08-01), Kase et al.
Akiba Taichi
Araki Yositsugu
Funabashi Tadashi
Itoh Yoshihisa
Kenmotsu Isami
Cabeca John W.
Pioneer Electronic Corporation
Shoop Jr. William M.
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