Disk-shaped sound recording medium, especially CD

Details Disk-shaped sound recording medium, especially CD Disk-shaped sound recording medium, especially CD

1996-12-19

1998-12-22

Cao, Allen T.

Dynamic information storage or retrieval

Storage medium structure

369291, G11B 370

Patent

active

058525980

ABSTRACT:
A disk-shaped sound recording medium includes a disk element with shaped outer contour with at least two contour areas which are shaped mutually complementarily to one another. At least two sound recording media can put together in the plane of the disk in the manner of a jigsaw puzzle. One of the contour areas is made curved-shaped with the disk radius (R) in the inward direction and, approximately in a center of this one of the contour areas, with an outwardly directed, undercut tongue. Another of the contour areas is provided with a groove, which is formed in a circular outer contour. The groove is shaped complementary to the tongue.

REFERENCES:
patent: 5251192 (1993-10-01), Liu
patent: 5253235 (1993-10-01), Isobe et al.
patent: 5422869 (1995-06-01), Versleegers
patent: 5528567 (1996-06-01), Kim

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