Search Patents
  • Access and control system for network-enabled devices
    Patent number: 8341275
    Abstract: Systems and methods for remote access of network-enabled devices that provide seamless, firewall-compliant connectivity between multiple users and multiple devices, that allow collaborative operations by multiple users of remote devices, that allow point to multipoint control of multiple devices and which allow rapid, secure transmission of data between remote users and devices. In general terms, the system includes at least one connection server, and at least two computers operatively coupled to the connection server via a public or global network. In an example where at least one client computer is operatively connected to at least one network-enabled device through a connection server via the public or global network, the connection server is configured to route control instructions from the client to the network-enabled device, and route data from the network-enabled device to the client.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: December 25, 2012
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Multilayer reflection microhologram storage in tape media
    Patent number: 6020985
    Abstract: 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 reference and signal beams. The holograms are stored at the diffraction limit of high-N.A. optics, and have relatively high grating frequencies and small sizes. Dynamic aberration compensators correct for the depth-varying spherical aberration imparted to the beams by the medium. Multiple mutually-incoherent lasers are used for parallel storage and retrieval to increase data transfer rates. Achievable densities and signal-to-noise ratios are substantially higher than for index-perturbation or transmission hologram storage methods.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: February 1, 2000
    Assignee: Siros Technologies, Inc.
    Inventors: Robert R. McLeod, Sergei L. Sochava, Andrew J. Daiber, Mark E. McDonald, Lambertus Hesselink, Ingolf Sander, Timothy M. Slagle
  • Access and control system for network-enabled devices
    Patent number: 7600036
    Abstract: Systems and methods for remote access of network-enabled devices that provide seamless, firewall-compliant connectivity between multiple users and multiple devices, that allow collaborative operations by multiple users of remote devices, that allow point to multipoint control of multiple devices and which allow rapid, secure transmission of data between remote users and devices. In general terms, the system includes at least one connection server, and at least two computers operatively coupled to the connection server via a public or global network. In an example where at least one client computer is operatively connected to at least one network-enabled device through a connection sever via the public or global network, the connection server is configured to route control instructions from the client to the network-enabled device, and route data from the network-enabled device to the client.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 6, 2009
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Dynamic multiple wavelength filter using a stratified volume holographic optical element
    Patent number: 5640256
    Abstract: A dynamic multiple-wavelength filter which selects at least one wavelength from a beam of radiation incident on a Stratified volume Holographic Optical Element (SVHOE) in accordance with the Bragg condition. The SVHOE has a number n of grating layers i and a hologram of a grating vector K.sup.i is recorded in each grating layer i. A number n-1 of buffer layers are interposed between grating layers i such that the layers SVHOE presents an alternating structure of grating and buffer layers. The filter has a diffraction efficiency control, preferably based on the ECD effect, for selectively varying the diffraction efficiency .eta. in at least one grating layer i to select from the beam of radiation a narrow bandwidth centered about Bragg wavelength .lambda..sub.B.sup.i of grating layer i.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: June 17, 1997
    Assignee: Board of Trustees of the Leland Stanfor Junior University
    Inventors: Raymond De Vre, Lambertus Hesselink
  • SINGLE SHOT ANALYZER GRATING FOR DIFFERENTIAL PHASE CONTRAST X-RAY IMAGING AND COMPUTED TOMOGRAPHY
    Publication number: 20220341856
    Abstract: In accordance with the invention, an X-ray amplitude analyzer grating adapted for use in an interferometric imaging system, the interferometric imaging system comprising an X-ray source and an X-ray detector with an X-ray fringe plane between the X-ray source and the X-ray detector, wherein an X-ray fringe pattern is formed at the X-ray fringe plane, wherein the X-ray amplitude analyzer grating is provided. The X-ray amplitude analyzer grating comprises a plurality of grating pixels across two dimensions of the X-ray amplitude analyzer grating, wherein each grating pixels of the plurality of grating pixels has a different pattern with respect to all adjacent grating pixels to the grating pixel so that all adjacent grating pixels do not have a same pattern as the grating pixel.
    Type: Application
    Filed: September 4, 2020
    Publication date: October 27, 2022
    Inventors: Max YUEN, Yao-Te CHENG, Paul Christopher HANSEN, Lambertus HESSELINK
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Patent number: 9348864
    Abstract: Secure and remote operation of a remote computer from a local computer over a network includes authenticating at least one remote computer for connection to at least one computer over the network and/or at least one local computer for connection to at least one remote computer over the network; establishing a secure connection therebetween; and integrating a desktop of at least one remote computer on a display of at least one local computer. Functions that are performed may include one or more of: integrating a file structure of accessible files accessed at the second or first computer, into a file structure contained at the first or second computer, respectively; at least one of integrating a desktop of the second computer on a display of the first computer and integrating a desktop of the first computer on a display of the second computer; and directly operating the second computer from the first computer or the first computer from the second computer.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 24, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Digital rights managment system, devices, and methods for binding content to an intelligent storage device
    Publication number: 20130266137
    Abstract: The present invention relates to digital rights management (DRM) for content that may be downloaded and bound to a storage device. The storage device may be an intelligent storage device, such as a disk drive, or network attached storage. In addition, the storage device is capable of performing cryptographic operations and providing a root of trust. In one embodiment, the DRM employs a binding key, a content key, and an access key. The binding key binds the content to a specific storage and is based on a key that is concealed on the storage. However, the binding key is not stored on the storage with the content. The content key is a key that has been assigned to the content, for example, by a trusted third party. The access key is determined based on a cryptographic combination of the content key and the binding key. In one embodiment, the content is encrypted based on the access key and stored in encrypted form in the storage device.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 10, 2013
    Applicant: Western Digital Technologies, Inc.
    Inventors: David L. BLANKENBECKLER, Danny O. Ybarra, Lambertus Hesselink
  • Digital rights management system, devices, and methods for binding content to an intelligent storage device
    Patent number: 9214184
    Abstract: The present invention relates to digital rights management (DRM) for content that may be downloaded and bound to a storage device. The storage device may be an intelligent storage device, such as a disk drive, or network attached storage. In addition, the storage device is capable of performing cryptographic operations and providing a root of trust. In one embodiment, the DRM employs a binding key, a content key, and an access key. The binding key binds the content to a specific storage and is based on a key that is concealed on the storage. However, the binding key is not stored on the storage with the content. The content key is a key that has been assigned to the content, for example, by a trusted third party. The access key is determined based on a cryptographic combination of the content key and the binding key. In one embodiment, the content is encrypted based on the access key and stored in encrypted form in the storage device.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 15, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: David L. Blankenbeckler, Danny Ybarra, Lambertus Hesselink
  • Optical information storage medium
    Patent number: 6540397
    Abstract: An optical information medium comprising at least two data layers for bearing recorded information, and a servo layer for bearing tracking servo, information which is independently formed from the data layers; wherein the medium is used with a recording or reading system wherein a data beam for recording or reading the data in the data layer and a servo beam for reading the tracking servo information in the servo layer are used, and the servo layer is read by the servo beam that had passed through the data layer; and a filter layer is disposed between the data layer and the servo layer, and the filter layer exhibits higher absorption to the data beam than to the servo beam.
    Type: Grant
    Filed: April 5, 2001
    Date of Patent: April 1, 2003
    Assignees: Siro Technologies, Inc., TDK Corporation
    Inventors: Jiro Yoshinari, Takuya Tsukagoshi, Hideki Hirata, Naoki Hayashida, Tokuyuki Honda, Mark E. McDonald, Michael V. Morelli, Andrew J. Daiber, Sanjoy Ghose, Lambertus Hesselink, Shunichi Nishimura, Sergei Sochava
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Patent number: 8661507
    Abstract: Applications, systems and methods for securely and remotely operating a remote computer from a local computer over a network while providing seamless, firewall-compliant connectivity. Secure and remote operation includes authenticating at least one remote computer for connection to at least one computer over the network and/or at least one local computer for connection to at least one remote computer over the network; establishing a secure connection between the at least one local computer and the at least one remote computer over the network; and integrating a desktop of at least one remote computer on a display of at least one local computer. The connections may be made over a public network, as well as through multiple firewalls without loss of functionality.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: February 25, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Apparatus with flexible x-ray gratings
    Patent number: 11116463
    Abstract: An X-ray grating configured for use in an X-ray imaging apparatus is provided. The X-ray grating has a silicone-based base layer. A plurality of silicon-based ridges is on a surface of the silicon-based base layer, wherein the plurality of silicon-based ridges from a plurality of trenches, where a trench of the plurality of trenches is between two silicon-based ridges of the plurality of silicon-based ridges. A plurality of silicon-based bridges extends between adjacent silicon-based ridges, wherein each silicon-based ridge of the plurality of silicon-based ridges is connected to at least one adjacent silicon-based ridge of the plurality of silicon-based ridges by at least one of a silicon-based bridge of the plurality of silicon-based bridges and wherein at least one of a plurality of four adjacent trenches does not have any silicon-based bridges.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: September 14, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yao-Te Cheng, Ludwig Galambos, Lambertus Hesselink
  • Apparatus for holographic data storage
    Patent number: 5995251
    Abstract: 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 onto the CCD (i.e. the positions of the SLM, lens, and CCD satisfy the lens equation). The holographic storage material is located between the lens and CCD. Preferably, the storage material is located centered upon a Fourier plane of the lens. In this case, the apparatus also has a phase mask located adjacent to the SLM. Alternatively, the storage material is located a distance away from the Fourier plane or is not centered on the Fourier plane. In yet another embodiment, the holographic storage material is located in contact with the CCD.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: November 30, 1999
    Assignee: Siros Technologies, Inc.
    Inventors: Lambertus Hesselink, John F. Heanue, Andrew J. Daiber
  • Tip-enhanced resonant apertures
    Patent number: 8196217
    Abstract: Transmission efficiency and/or spatial resolution provided by resonant apertures can be enhanced by disposing a tip on part of the screen that extends laterally into the aperture. For example, a tip disposed on the ridge of a C-shaped aperture can dramatically improve performance. A spatial resolution of ?/50 has been experimentally demonstrated with this approach. The combination of high spatial resolution and high transmission efficiency provided by this approach enables many applications, such as near field optical probes for near field scanning optical microscopy (NSOM). Another application is high resolution electron sources, where an photoelectron emitter can be disposed at or near a tip+aperture structure such that the high resolution optical near-field provides a correspondingly high resolution electron source.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: June 5, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yao-Te Cheng, Yin Yuen, Paul C. Hansen, Yuzuru Takashima, Lambertus Hesselink
  • Access and control system for network-enabled devices
    Patent number: 7120692
    Abstract: Systems and methods for remote access of network-enabled devices that provide seamless, firewall-compliant connectivity between multiple users and multiple devices, that allow collaborative operations by multiple users of remote devices, that allow point to multipoint control of multiple devices and which allow rapid, secure transmission of data between remote users and devices. In general terms, the system includes at least one connection server, and at least two computers operatively coupled to the connection server via a public or global network. In an example where at least one client computer is operatively connected to at least one network-enabled device through a connection server via the public or global network, the connection server is configured to route control instructions from the client to the network-enabled device, and route data from the network-enabled device to the client.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: October 10, 2006
    Assignee: Senvid, Inc.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • PHOTONIC-CHANNELED X-RAY DETECTOR ARRAY
    Publication number: 20170038481
    Abstract: An X-ray detector array includes a scintillator that converts input X-ray radiation to secondary optical radiation output from the scintillator, a first telecentric micro lens array that array receives the secondary optical radiation, a phase coded aperture, where the first telecentric micro lens array directs the secondary optical radiation on the phase coded aperture, a second telecentric micro lens array, where the secondary optical radiation output from the phase coded array is directed to the second telecentric micro lens array, a patterned grating mask, where the second telecentric micro lens array directs the optical beam on the patterned mask, and a photodetector array, where the patterned mask outputs the optical beam in a pattern according to the patterned mask to the photodetector array, where the photodetector array outputs a signal, where a photon fringe pattern is imaged and sampled in the wavelength domain of the radiation from the scintillator.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Inventors: Yao-Te Cheng, Lambertus Hesselink, Young-Sik Kim, Yuzuru Takashima, Max Yuen
  • VCR webification
    Publication number: 20040172449
    Abstract: An apparatus, method and service model are disclosed which simplify conventional methods for schedule recordings of television programs and enable users to control recording equipment from any location via the Internet. Entities connected to computer networks such as the Internet and web-browser software can schedule recordings of television programs and/or operate the recording equipment. In an example scenario, a user who maintains recording equipment at home may utilize the present invention from his or her workplace or vacation place, accesses a service provider website using her/his user name and password, views the a schedule of television programs provided by a broadcaster or other distributor of programming and selects the television programs to be recorded. The application service provider in turn transmits the selected television program information to a computer connected to a later described remote control unit to execute and operate the recording of selected programs.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Joep van Beurden, Eric S. Bjornson
  • Near-Field Aperture Having A Fractal Iterate Shape
    Publication number: 20080088903
    Abstract: Near-field electromagnetic devices having an opaque metallic screen with a fractal iterate aperture are provided. More specifically, the aperture is obtained by application of a self-similar replacement rule to an initial shape two or more times. Alternatively, the aperture can be obtained by application of a self-similar replacement rule one or more times to an initial C-shape. Such apertures tend to have multiple transmission resonances due to their multiple length scales. Fractal iterate apertures can provide enhanced transmission and improved spatial resolution simultaneously. Enormous improvement in transmission efficiency is possible. In one example, a checkerboard fractal iterate aperture provides 1011 more intensity gain than a square aperture having the same spatial resolution. Efficient transmission for fractal iterate apertures having spatial resolution of ?/20 is also shown.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 17, 2008
    Inventors: Joseph Matteo, Lambertus Hesselink, Yin Yuen
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Publication number: 20050144195
    Abstract: Applications, systems and methods for permitting simultaneous use of a file by two or more computers over a network may include storing the file locally in a local storage device associated with a local computer; providing access to the file by at least one remote computer which is connectable to the local computer via the network, and wherein at least one of the computers is connectable to the network through a firewall element. The file may be stored in at least one remote storage device associated with the at least one remote computer, respectively, and versions of the file contained on the one or more remote storage devices are synchronized with that on the local device by transmitting over the network connecting the one or more remote storage devices with the local device, at least one of Delta files and Inverse Delta files between the remote storage devices and the local storage device.
    Type: Application
    Filed: November 13, 2004
    Publication date: June 30, 2005
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric Bjornson
  • Near-field laser and detector apparatus and method
    Patent number: 6574257
    Abstract: A near-field laser and detector apparatus and method wherein both writing and reading of optical media can be carried out using the same laser operating in a single mode for both read and write operations. The single operational mode can be utilized with both edge emitting and surface emitting laser configurations, and allows readout via rear facet output power variation or by voltage variation across the laser. A small aperture laser is operated during read and write operations at a bias current which is higher than the threshold currents associated with feedback from high and low reflectivity regions of an optical medium. The bias current and laser structure provide a relatively high, continuous output power from the front emission facet of the laser to facilitate writing, while providing substantial fluctuation or change in output power from the rear emission facet to facilitate readout.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: June 3, 2003
    Assignee: Siros Technologies, Inc.
    Inventors: Robert L. Thronton, Lambertus Hesselink
  • Laser interferometer probe
    Patent number: 4171915
    Abstract: Index of refraction measurements are made by means of an optical device in which a coherent light beam is divided into an object beam and a reference beam, each of which is directed through a separate path in a common light transmitting medium. The object beam is also transmitted en route through a test volume that accommodates a substance to be tested. It is subsequently recombined with the reference beam to form a single output beam. The output beam is received by a photo detector and its intensity is measured. The intensity of the detected output beam is related to any phase shift between the object and reference beams. The phase shift in turn is a measure of the index of refraction of the test substance. Information relating to density, temperature and pressure of the test substance can be derived from measured index of refraction values by using conventional conversion formulas.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: October 23, 1979
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Lambertus Hesselink
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