Title:
三次元光メモリ
Document Type and Number:
Japanese Patent JP4230148
Kind Code:
B2
Abstract:
The present invention is directed to a three-dimensional memory apparatus for storing information in a volume comprising of an active medium. The active medium is capable of changing from a first to a second isomeric form as a response to radiation of a light beam having an energy substantially equal to a first threshold energy. The concentration ratio between a first and a second isomeric form in any given volume portion represents a data unit. The active medium in the memory apparatus comprises of diarylalkene derivatives, triene derivatives, polyene derivatives or a mixture thereof. The invention is further directed to means for reading the data units from the isomeric states of the active medium in different portions of said active medium where the two isomeric forms have a substantially different absorption coefficient for absorbing energy of a second threshold energy. Reading may also be carried out by measuring the scattering pattern of the two isomeric forms.
Inventors:
Alpert, Otaru
Application Number:
JP2001571412A
Publication Date:
February 25, 2009
Filing Date:
March 28, 2001
Export Citation:
Assignee:
Menpile Incorporated
International Classes:
G11B7/241; G11B7/244; G03C1/73; G11B7/004; G11B7/0045; G11B7/24
Domestic Patent References:
| JP2001520637A | ||||
| JP6003764A | ||||
| JP11250501A | ||||
| JP62165747A | ||||
| JP2001522119A | ||||
| JP9306025A | ||||
| JP9080681A | ||||
| JP9077767A | ||||
| JP5197955A | ||||
| JP2001505701A | ||||
| JP7201071A | ||||
| JP7248570A | ||||
| JP10166738A | ||||
| JP8245579A | ||||
| JP8119963A | ||||
| JP7201077A |
Foreign References:
| WO1999024527A1 |
Attorney, Agent or Firm:
Sota Asahina
Kei Saki
Fumio Akiyama
Hiromu Tanaka
Kei Saki
Fumio Akiyama
Hiromu Tanaka
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