D Data Inc.

Tridstore IP LLC

Other

Valdas Ltd. (a British Virgin Island Corp.)

Eugene Levich

Mark A Alperovich

Jacob N Malkin

Irene Zuhl

Serguei Magnitski

Boris Chernobrod

Vladimir V Shubin

Galina Dorozhkina

Andrei Tarasishin

Zeev Orbach

Nikolay Magnitskii

Tatiana Lissovskaia

Andrey Tarasishin

Alexej Lezhnev

Vladimir Kozenkov

Sergey Magnitskii

Iossif Diskin

Mihail Kvasha

Vladimir Schwartz

Boris Alexey Glushko

A Lezhnev

Alexey Lezhnev

Arik Khaikin

Dimitrij Pebalk

Dmitry Pebalk

Irina Kiryushev

Iossif Diskine

Zeev Averbuch

Tatiana Lissovskaya

Arie Chaikin

Sergei Magnitskii

Irina Kiryusheva

Sergei A Magnitakil

Svetlana Makievskaya

Dimitriji Pebalk

Irene Zuhi

Tatlana Lissovakaya

Aridel Tarasishin

Eugene Kapinus

Arkady Khaikin

Andrey Mikhailov

An optical information storage medium has multiple information layers. On each layer, information is stored in the form of an electroluminescent material. The pits are organized into regions called pages. A specific page on a specific layer can be addressed through electrodes integrated into the medium. The medium can be read-only or WORM. For the WORM embodiment, a recordable electroluminescent material is combined with a quencher and a free radical generating compound that, when thermally degraded, generates free radicals to bleach the quencher. To amplify the light from an information layer, a photoconductive layer and an additional electroluminescent layer can be provided.

Electroluminescent multilayer optical information storage medium with integrated readout and composition of matter for use therein

A general optical storage system (OSS) contains an optical drive and a fluorescent multilayer disc (FMLD), which can be realized as a multilayer structure with data storage in fluorescent spots like pits or spiral grooves, divided by layers, transparent to reading and fluorescent radiation. The OSS includes a fluorescent signal reception device, capable of reading FMLD, as well as reflective CD and DVD discs (including CD-R, CD-RW, DVD-R, etc.). Increase of pit width in FMLD and use of microangle mirrors allow increase of the information signal. Elimination of FMLD fluorescence lifetime influence on data pulse duration allows an increase in the data reading rate. The absorption indices of different layers of FMLD are optimized.

Optical data storage system having combined fluorescent three-dimensional information carrier

An information layer for an optical information storage medium is formed in a centrifuge. A photopolymerizable composition is applied to a solid base having a relief pattern, and a flexible, transparent film layer is applied on top of the composition. The three are spun in a centrifuge to cause a thin, even distribution of the photopolymerizable composition, which is photopolymerized. The resulting replica is separated from the relief pattern and has a fluorescent material applied thereto. Alternatively, the replica has a non-fluorescent material applied thereto, and the non-fluorescent material is made fluorescent through diffusion. Multiple information layers thus formed can be glued together to form a multilayer optical information storage medium.

Manufacturing method for multilayer fluorescent information carriers

A fluorescent composition for use with single-layer and multilayer optical discs for CD ROM, DVD and WORM type devices with fluorescent reading is disclosed. The composition comprises a fluorescent dye, film-forming polymer, plasticizer, surfactant and light stabilizer. A method of increasing fluorescent signal level from the optical discs both for single-layer and multilayer optical memory materials is also disclosed along with the resulting optical discs.

Method for increasing fluorescent signal of optical disks with fluorescent reading and resultant discs

High sensitive organic dye-in-polymer (DIP) medium for write-once-read-many (WORM) optical discs with fluorescent reading. The medium consists of a fluorescent color means, capable of absorbing writing radiation produced by a laser, a compound capable of generating free radicals upon influence of heat produced by the writing radiation and a polymer capable of producing a translucent film enabling high quantum yield of the fluorescence induced in the color means. The color means can be selected from xanthene dyes of the eosine and rhodamine groups, acridine, oxazine, azine, peylene, violanthrone, cyanine, phtalocyanine, indigoide colors and porphyries. The free radicals generating compound can be chosen from the group of compounds comprising azo and diazoi compounds or peroxyde compounds. The film producing polymer can be selected from the group of compounds comprising cellulose ethers, vinyl resins or acrylic resins.

Recording layer with organic dye-in-polymer (DIP) medium for write-once-read-many (WORM) optical discs with fluorescent reading

A general optical storage system (OSS) contains an optical drive and a fluorescent multilayer disc (FMLD), which can be realized as a multilayer structure with data storage in fluorescent spots like pits or spiral grooves, divided by layers, transparent to reading and fluorescent radiation. The OSS includes a fluorescent signal reception device, capable of reading FMLD, as well as reflective CD and DVD discs (including CD-R, CD-RW, DVD-R, etc.). Increase of pit width in FMLD and use of microangle mirrors allow increasing information signal. Elimination of FMLD fluorescence lifetime influence on data pulses duration allows increasing data reading rate. The absorption indices of different layers of FMLD were optimized.

A CD-ROM type optical disk, whether single-layer or multi-layer, is formed on a substrate having pits in its surface. The pits are filled with a fluorescent composition. Multiple disks such as that one can be glued on top of one another. Suitable fluorescent compositions include xanthene dyes of the eosine group, xanthene dyes of the rhodamine group, acridine dyes, oxazine dyes, azine dyes, indigoide dyes, perylene dyes, violanthrone dyes, cyanine dyes, phthalocynanine dyes, and porphyrins.

Fluorescent composition for the manufacture of CD-ROM type optical memory disks

Electroluminescent multilayer optical information storage medium with integrated readout and compositions of matter for use therein

In a multilayer recordable optical medium, each recording layer includes a luminophore that fluoresces under reading laser light and a quencher capable of quenching the luminophore fluorescence. Initially, the luminophore and the quencher are not intermixed, so that the default state of the luminophore is fluorescent. During writing, focused writing radiation heats a spot in the medium so as to cause the luminophore and the quencher to be intermixed, thereby quenching the fluorescence.

Multilayer recordable optical medium with fluorescent reading

A dye-in-polymer composition for in fluorescent WORM discs comprises about 0.1 to 10% by weight of a fluorescent dye capable of absorbing laser radiation and transforming the absorbed light into heat; about 10 to 80% by weight of nitrocellulose and a film forming polymer. The dye containing solution is applied to substrate of an optical reading medium by a spin, roller or dip coating. The method utilizes a focused laser beam for scanning the recording layer.

Organic recording medium for fluorescent worm disks

A multilayer optical information storage medium, such as a card, uses a luminescent, fluorescent, or electroluminescent material to reproduce information in the form of incoherent radiation. Each layer has multiple pages of information. A specific page on a specific layer is addressed by moving the card relative to a read head so that the image of the specific page to be read is focused on the read head. This can be accomplished by moving the card in the X, Y, and Z directions, or by holding the card stationary and by moving a two-dimensional image detector in the X, Y, and Z directions.

Multilayer optical information storage medium based on incoherent signal

An EET (&ldquo;eight-to-ten&rdquo;) method has been proposed for two-dimensional spatial encoding of information stored in two- or three-dimensional, in particular fluorescent optical carriers. The method specifically ensures the same writing density as DVD carriers with EFM (&ldquo;eight-fourteen modulation&rdquo;) modulation code but for 0.8&times;0.4&mgr; information pit (fluorescent mark), i.e. as in CD data carriers. The larger&mdash;as compared to the DVD format&mdash;pit size enables a simpler technology for manufacturing fluorescent multilayer carriers, for instance of ROM type, and a stronger fluorescent signal in reading. The high writing density is ensured through virtually 100% filling of the information layer area with fluorescent marks in a gap-free manner. In addition, this allows application of the parallel data reading procedure and a ten-fold higher reading speed than in DVD systems. Increasing the size of the channel bit to 0.4 &mgr;m&mdash;which is 1.5 and 3 times higher than for CD and DVD formats, respectively&mdash;allows a significant reduction in the frequency band and hence in photoreceiver noises. For equal values of the reading radiation wavelength and numerical aperture of the objective lens used, the proposed ETT (&ldquo;eight-to-ten&rdquo;) method of two-dimensional encoding in fluorescent carriers enables a significant lower magnitude of reading error probability in contrast to existing optical information carriers of DVD-type. It is also applicable to other write-once and rewritable optical data carriers based on various physical and chemical principles of forming information pits.

Method for data reading/writing using an optical carrier with pattern information pits

Processes for producing the multi-layered optical recording medium shown in FIG. using the embossing master ( ) shown in FIG. where an etched metal thin layer ( ) has been electroplated with a thick metal layer and the luminescent recording layer ( ) cast thereover forming pits ( ) between adjacent metallized areas. The luminescent layer may then be cured using UV light ( ).

Production of optical recording media having plural luminescent recording layers by embossing the recording layer

A method of manufacturing a multi-layer optical information carrier with fluorescence reading/recording is presented. A structure is fabricated, being formed of a substrate carrying a fluorescent film on one or both surfaces thereof, wherein the substrate is transparent with respect to incident radiation used for the fluorescence reading/recording. A patterned structure is applied to the fluorescent film under predetermined process conditions, such as to produce a fluorescent patterned structure with a surface relief in the form of an array of discrete fluorescent regions. The same procedure is repeated a required number of times, so as to obtain at the end of the process a multi-layer optical information carrier.

Multi-layer optical information carriers with fluorescent reading/recording and method for their production

Growing community of inventors

New York, NY, United States of America

Eugene Levich