US PATENT SUBCLASS 369 / 284-- .~.~ Radiation beam modified or controlling (e.g., photosensitve, optical track)

US PATENT SUBCLASS 369 / 284
.~.~ Radiation beam modified or controlling (e.g., photosensitve, optical track)

Current as of: June, 1999
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369 /	HD	DYNAMIC INFORMATION STORAGE OR RETRIEVAL

272	DF	STORAGE MEDIUM STRUCTURE {11}
283	DF	.~ Layered (e.g., permanent protective layer) {2}
284		.~.~ Radiation beam modified or controlling (e.g., photosensitve, optical track) {1}
285	DF	.~.~.~> With mask

DEFINITION

Classification: 369/284

Radiation beam modified or controlling (e.g., photosensitive, optical track):

(under subclass 283) Subject matter wherein at least one layer is either (a) responsive to incident radiation to vary a characteristic of such layer, or (b) has an information varied radiation characteristic to control a beam of radiation.

(1) Note. The characteristics referred to above are transmissivity or reflectivity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100+, for a device utilizing such storage medium elements.

275.1, for a storage medium element with light modifying structure.