摘要:
A method and system for providing copy-protected optical medium using a substrate having information stored thereon in information pits and information lands, wherein the information lands comprise lands in two different planes.
摘要:
A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state when exposed to a wavelength of about 630 nm to about 660 nm and software code to detect such change in optical state.
摘要:
A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state when exposed to a wavelength of about 630 nm to about 660 nm and software code to detect such change in optical state.
摘要:
A method and system for providing copy-protected optical medium using a substrate having information stored thereon in information pits and information lands, wherein the information lands comprise lands in two different planes.
摘要:
A method and system for providing copy-protected optical medium using a substrate having information stored thereon in information pits and information lands, wherein the information lands comprise lands in two different planes.
摘要:
Method and system for detecting authenticate products based upon alteration of emission characteristics due to interaction of the emissions with the product and the container.
摘要:
Method and system for detecting authenticate products based upon alteration of emission characteristics due to interaction of the emissions with the product and the container.
摘要:
Method and system for detecting authenticate products based upon alteration of emission characteristics due to interaction of the emissions with the product and the container.
摘要:
A method and apparatus for controlling access to a storage medium, such as an optically readable medium. Light sensitive or other materials that are adapted to change state and affect reading of a storage medium are used to control access to data that may be stored on optical medium and/or to control use of the medium.