High density storage of information on a substrate with multiple depth and height
AssigneeHitachi, Ltd.
InventorsToshiyuki Yoshimura, Shigeru Kakumoto, Shinji Okazaki, Yuji Toda
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Abstract
A high density storage medium which stores predetermined information by matching it on one-to-one basis with multiple levels of depth or height formed in predetermined plural areas of substrate surface, a storing method, a reading method and various systems using them have been disclosed.
Claims71
A high density data storage medium comprising:
- steps with multiple levels of one of depth and height formed in predetermined plural areas of a substrate surface, wherein the one of depth and height of said steps corresponds on a one-to-one basis with predetermined information and said information is recorded randomly on said substrate surface.
A high density data storage medium comprising:
- steps with "n" levels of one of depth and height formed in predetermined plural areas on a substrate surface, wherein the one of depth and height of said steps independently corresponds on a one-to-one basis with predetermined "n-value" data information, wherein "n" is a value of at least 3, and the information is recorded on the data storage medium.
A high density data storage medium responsive to an energy beam for writing and reading predetermined information, comprising, steps of multiple levels of one of depth and height formed in predetermined plural areas of a substrate surface, the one of depth and height of the steps corresponding on a one-to-one basis with the predetermined information to be stored by writing, and the information being recorded in a non-track form on the substrate surface.
A high density storage medium, comprising, steps with at least two levels of one of depth and height including a substrate surface, the one of depth and height of the steps corresponding on a one-to-one basis with predetermined information, the steps having a spatially controlled arrangement thereof, and the information is recorded on the data storage medium.
A high density data storage medium, comprising, steps with at least three levels of one of depth and height including a substrate surface, the one of depth and height of the steps corresponding on a one-to-one basis with predetermined information, and the information is recorded on the data storage medium.
A high density data storage medium comprising:
- steps with multiple levels of one of depth and height that was formed at predetermined plural areas on a substrate surface, wherein the one of depth and height of said steps independently corresponds on a one-to-one basis with predetermined information, said substrate has a form of one of a card and a pendant, and the information is recorded on the data storage medium.
Dependencies are inferred from the claim text.