1
Andrew J Daiber, Robert R McLeod, Ray Snyder: Sparse modulation codes for holographic data storage. Siros Technologies, Lumen Intellectual Property Services, April 15, 2003: US06549664 (57 worldwide citation)

A method for storing data in a holographic storage medium comprises the steps of dividing a bit stream of binary data into data groups, encoding the data groups as binary patterns, and storing the binary patterns holographically as data pages. Each binary pattern comprises channel bits, wherein the ...


2
Lambertus Hesselink, John F Heanue, Andrew J Daiber: Apparatus for holographic data storage. Siros Technologies, Lumen Intellectual Property Services, November 30, 1999: US05995251 (49 worldwide citation)

A holographic data storage apparatus having no readout lens. The apparatus has a spatial light modulator (SLM), a focusing element such as a lens, a holographic data storage material and a spatial light detector such as a CCD. The lens is located between the SLM and CCD such that the SLM is imaged o ...


3
Douglas G Stinson, Michael Morelli, Patrick D O&apos Rourke, Robert M Elkow, Robert Thornton: Multi-wavelength transmitter. Siros Technologies, Sierra Patent Group, August 5, 2003: US06603781 (48 worldwide citation)

Various aspects of multiple-channel light transmitting systems are disclosed. The system may include a multiple-wave length light source, a demultiplexer; a modulator, and a wavelocker. The wavelocker is configured to drive the light source such that said multiple wavelengths coincide with the ITU g ...


4
James R Amble, Lambrerrtus Hesselink, Tokyuki Honda, Mark E McDonald, Michael V Morelli, Andrew J Daiber, Herman A Ferrier, Sanjoy Ghose, Thomas A Kridl, Matthew Lipson, Shunichi Nishimura, Sergei Sochava, LeRoy A Volz: Optical data storage system with multiple layer media. Siros Technologies, Sierra Patent Group, June 3, 2003: US06574174 (44 worldwide citation)

An optical information storage system using optical storage media including multiple data layers or stacks wherein each of the multiple data stacks has a storage density comparable to a conventional single layer optical disk. The optical data storage system comprises an optical medium having a singl ...


5
Andrew J Daiber, Robert R McLeod, Tokuyuki Honda: Volumetric track definition for data storage media used to record data by selective alteration of a format hologram. Siros Technologies, Andrew V Smith, Sierra Patent Group, November 27, 2001: US06322933 (42 worldwide citation)

A photoactive medium has a complex format grating written thereon, the complex format grating including at least three component gratings, each of the component gratings characterized by a unique grating vector. Methods for writing the complex format grating include the steps of providing a photoact ...


6
Brian H Cumpston, Joseph W Perry, Seth R Marder: Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings. Siros Technologies, Andrew V Smith, Sierra Patent Group, November 27, 2001: US06322931 (37 worldwide citation)

The present invention comprises an optical data storage system utilizing a host material and molecules that exhibit non-linear absorption dissolved therein. The non-linear absorbing molecules allow for energy in the form of heat to be generated during the optical data storage process. This heat prov ...


7
Ray Snyder, Andrew Daiber: Method for holographic data storage and retrieval. Siros Technologies, Lumen Intellectual Property Services, May 16, 2000: US06064586 (36 worldwide citation)

A method for holographic data storage comprises the step of formatting a page with calibration marks as well as data patterns representing data. The page is then stored in a holographic storage medium. A method for holographic data retrieval comprises the step of detecting locations of the calibrati ...


8
Robert R McLeod, Sergei L Sochava, Andrew J Daiber, Mark E McDonald, Lambertus Hesselink, Ingolf Sander, Timothy M Slagle: Multilayer reflection microhologram storage in tape media. Siros Technologies, Lumen Intellectual Property Services, February 1, 2000: US06020985 (27 worldwide citation)

Digital data bits are stored as discrete-level reflection microholograms in a multi-depth digital optical data storage system. Reference and signal beams are incident in a counterpropagating geometry on opposite faces of a tape. The reflection microholograms are stored at the coinciding focus of the ...


9
Sergei Sochava, Sergei Orlov, Tokuyuki Honda, Brian H Cumpston, Lambertus Hesselink: Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium. Siros Technologies, Andrew V Smith, Sierra Patent Group, October 30, 2001: US06310850 (26 worldwide citation)

An apparatus and method for optical data storage and/or retrieval using an optical data storage medium having a spatially-modulated refractive index that can be altered locally with optical methods. Data can be written at a plurality of depths throughout the volume of the medium using a write beam a ...


10
Sergei Orlov, Ray Snyder, Matthew C Bashaw: Optical relay for pixel-based holographic storage and retrieval. Siros Technologies, Lumen Intellectual Property Services, August 22, 2000: US06108110 (26 worldwide citation)

A holographic storage and retrieval system for use in co-propagating or counter-propagating geometries having a common optical relay for guiding a signal beam and a reference beam along a common optical axis to a holographic medium to write a hologram therein. The optical relay has an object region ...