Erasable optical data storage medium and method and...

Details Erasable optical data storage medium and method and... Erasable optical data storage medium and method and...

G - Physics

11

B

352/32.1, 352/33

G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/0055 (2006.01) G11B 7/24 (2006.01) G11B 7/244 (2006.01) G11B 11/03 (2006.01)

Patent

CA 1229410

AN ERASABLE OPTICAL DATA STORAGE MEDIUM AND METHOD AND APPARATUS FOR RECORDING DATA ON THE MEDIUM ABSTRACT An erasable optical data storage medium including a substrate and a dual layer of a first material and a second material on the substrate. The dual layer is susceptible to expansion and contraction, to writing data thermally, to erasing data thermally and mechanically, and to reading data optically, the first material and the second material, respectively, being bonded together and remaining in the same physical state upon the expansion and relaxation of the dual layer. Methods and apparatus are also disclosed for recording data bits on the medium.

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