Search Patents
  • Secure Control System for Multistage Thermo Acoustic Micro-CHP Generator
    Publication number: 20190203660
    Abstract: A Stirling engine feedback controller is provided that includes a Stirling engine having at least one piston, where the Stirling engine includes an Alpha-Stirling engine, and a Gamma-Stirling engine. The feedback controller includes a power sensor, a computer, and an electronic feedback loop. Here, the power sensor is configured to sense the power of the Stirling engine then output a power signal. In one aspect, the computer can be a central processing unit (CPU), or a field programmable gate array (FPGA), where the computer operates a control algorithm. Further, the electronic feedback loop receives the output power signal and an output signal from the computer, where an output signal from the electronic feedback loop is configured to a control a position of the piston(s).
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Inventors: Lambertus Hesselink, Rajesh Batra, George Pontis, Geoffrey A. Bruder
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Publication number: 20050149481
    Abstract: Applications, systems and methods for efficiently accessing and controlling data of devices among multiple computers over a network. Peer-to-peer exchanges of data between private computers is made possible while providing seamless, firewall-compliant connectivity. Such functionality is available even among private users over a public network, and even when multiple firewalls must be passed through. A firewall compliant connection may be established between a local computer and at least one remote computer; at least one file on a storage device associated with one of the computers is selected, and securely sent to at least one other computer over the secure connections. Computers may be connected over a wide area network with or without a connection server, with or without a VPN.
    Type: Application
    Filed: November 13, 2004
    Publication date: July 7, 2005
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric Bjornson
  • Focusing and imaging compatible objective lenses for pixel-based and/or bit-based optical data recording and retrieval
    Patent number: 8374068
    Abstract: A low cost and lightweight interchangeable lens system is provided. The lens system includes two aspheric elements that is usable both for page-based and bit-based data storage systems. The lens system has a large field of view up to ±50 degrees and a high numerical aperture up to 0.8. The invention reduces cost and weight of the objective lenses and is usable with the servoing technology. The invention provides a long working distance of 20% of the focal length and provides sufficient physical space to accommodate media and aberration corrections, which enable a media interchangeable and compatible system among the both optical recording formats.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: February 12, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yuzuru Takashima, Lambertus Hesselink
  • Control and observation of physical devices, equipment and processes by multiple users over computer networks
    Publication number: 20030051006
    Abstract: A method and system for enabling multiple users from different physical locations to access, observe, control and manipulate physical processes and devices over a computer network such as the Internet is disclosed. A user may visually monitor the physical set up and state of an experiment or environment by receiving live video and data, as well as directly control instrumentation while receiving live feedback regarding the input commands. Measurement data may be collected into a database and computational analysis can be generated and displayed as a physical process is being performed. An online interactive laboratory notebook is also provided that manages items such as collected data, laboratory parameters, “to do” lists, personal notes, etc.
    Type: Application
    Filed: October 9, 2002
    Publication date: March 13, 2003
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Optical information medium
    Publication number: 20020041564
    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: Application
    Filed: April 5, 2001
    Publication date: April 11, 2002
    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, Sergel Sochava
  • METHODS OF ENGULFING PARTICLES AND DEVICES FOR PRACTICING SAME
    Publication number: 20230364605
    Abstract: Provided are methods of engulfing particles into droplets. The methods use a microfluidic device comprising a droplet generator and a chamber, the chamber comprising a liquid medium disposed on a voltage supply electrode and a ground electrode. The methods comprise dispensing a particle and a droplet into the liquid medium, and dielectrophoretically trapping the particle and the droplet using the voltage supply electrode and the ground electrode. The methods further comprise engulfing the particle into the droplet, wherein the engulfing comprises increasing a supply voltage between the voltage supply electrode and the ground electrode, thereby moving the droplet toward the voltage supply electrode and engulfing the particle into the droplet. In certain embodiments, the methods further comprise modifying the engulfed particle, assessing the engulfed particle, or both. Devices that find use in practicing the methods of the present disclosure are also provided.
    Type: Application
    Filed: April 28, 2023
    Publication date: November 16, 2023
    Inventors: Lambertus Hesselink, Punnag Padhy, Mohammad Zaman, Ronald Davis, Michael Jensen
  • DIGITAL RIGHTS MANAGEMENT SYSTEM AND METHODS FOR PROVISIONING CONTENT TO AN INTELLIGENT STORAGE
    Publication number: 20130268749
    Abstract: The present invention relates to digital rights management (DRM) for content that downloaded and saved to a storage device. The storage may be a disk drive, or network attached storage. In addition, the storage device performs cryptographic operations and provides a root of trust. 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. The binding key is not stored on the storage device with the content. The content key is a key that has been assigned to the content. The access key is determined based on a cryptographic combination of the content key and the binding key. In one embodiment, the content is provisioned 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 Ybarra, Lambertus Hesselink
  • Tip-enhanced resonant apertures
    Publication number: 20110055984
    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: Application
    Filed: August 16, 2010
    Publication date: March 3, 2011
    Inventors: Yao-Te Cheng, Yin Yuen, Paul C. Hansen, Yuzuru Takashima, Lambertus Hesselink
  • METHODS AND SYSTEMS FOR A PERSONAL MULTIMEDIA CONTENT ARCHIVE
    Publication number: 20120036041
    Abstract: The embodiments provide for legally transferring multimedia content stored on a medium to a personal content archive device. The device is configured to consolidate a user's content into a single device or secured storage that allows easy access to the content while preserving the digital rights of the content. When a content medium has been provided, the device queries a registration service over a network, such as the Internet, to register the content and indicate that it was legitimately obtained. The device may then be authorized to download and store an authorized version of the content into its secured storage. The authorized version may be the same or a variation of the registered content. The content may then be downloaded from one or more content sources. The registration process may be based on several criteria, such as an authenticity check of the medium, a fee payment, and the like.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 9, 2012
    Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventor: Lambertus Hesselink
  • Single X-ray grating X-ray differential phase contrast imaging system
    Patent number: 10859517
    Abstract: Single X-ray grating differential phase contrast (DPC) X-ray imaging is provided by replacing the conventional X-ray source with a photo-emitter X-ray source array (PeXSA), and by replacing the conventional X-ray detector with a photonic-channeled X-ray detector array (PcXDA). These substitutions allow for the elimination of the G0 and G2 amplitude X-ray gratings used in conventional DPC X-ray imaging. Equivalent spatial patterns are formed optically in the PeXSA and the PcXDA. The result is DPC imaging that only has a single X-ray grating (i.e., the G1 X-ray phase grating).
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 8, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Lambertus Hesselink, Max Yuen, Yao-Te Cheng, Yuzuru Takashima
  • DIGITAL RIGHTS MANAGEMENT SYSTEM AND METHODS FOR ACCESSING CONTENT FROM AN INTELLIGENT STORAG
    Publication number: 20130268771
    Abstract: The present invention relates to accessing content stored on a storage device and protecting the content with a digital rights management (DRM) scheme. The storage device may be a disk drive, or network attached storage. The storage device can perform cryptographic operations and provide a hardware root of trust. The DRM employs a binding key, a content key, and an access key. The binding key binds the content to the storage device and is based on a key concealed on the storage device. The binding key itself is not stored anywhere on the storage device. The content key is a key assigned to the content. The access key is determined based on a cryptographic combination of the content key and 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 YBARRA, Lambertus HESSELINK
  • Digital rights management system and methods for provisioning content to an intelligent storage
    Patent number: 9342701
    Abstract: The present invention relates to digital rights management (DRM) for content that downloaded and saved to a storage device. The storage may be a disk drive, or network attached storage. In addition, the storage device performs cryptographic operations and provides a root of trust. 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. The binding key is not stored on the storage device with the content. The content key is a key that has been assigned to the content. The access key is determined based on a cryptographic combination of the content key and the binding key. In one embodiment, the content is provisioned based on the access key and stored in encrypted form in the storage device.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: May 17, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: David L. Blankenbeckler, Danny O. Ybarra, Lambertus Hesselink
  • Secure control system for multistage thermo acoustic micro-CHP generator
    Patent number: 10156185
    Abstract: A method of controlling facility power requirements using a thermoacoustic power device is provided that includes determining energy assets in a facility, controlling the energy assets using an appropriately programmed controller across a network having a security system protocol, monitoring outside temperatures and weather, measuring usage of the energy assets using a temperature sensor or an electrical usage sensor to a load-response signal of an on/off operation and usage of the energy assets to identify a specific energy asset by the controller to determine aggregate energy needs of the energy assets, and using a thermoacoustic power device controlled by the controller to generate electricity and heat according to the monitored temperature, weather and energy assets.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: December 18, 2018
    Assignee: Nirvana Energy Systems, Inc.
    Inventors: Lambertus Hesselink, Geoffrey A. Bruder, Mark A. Pickens, Rajesh Batra, Neil W. Troy, Rodger W. Dyson, Jr.
  • Secure control system for multistage thermo acoustic micro-CHP generator
    Patent number: 10989141
    Abstract: A Stirling engine feedback controller is provided that includes a Stirling engine having at least one piston, where the Stirling engine includes an Alpha-Stirling engine, and a Gamma-Stirling engine. The feedback controller includes a power sensor, a computer, and an electronic feedback loop. Here, the power sensor is configured to sense the power of the Stirling engine then output a power signal. In one aspect, the computer can be a central processing unit (CPU), or a field programmable gate array (FPGA), where the computer operates a control algorithm. Further, the electronic feedback loop receives the output power signal and an output signal from the computer, where an output signal from the electronic feedback loop is configured to a control a position of the piston(s).
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 27, 2021
    Assignee: Nirvana Energy Systems, Inc.
    Inventors: Lambertus Hesselink, Rajesh Batra, George Pontis, Geoffrey A. Bruder
  • Methods and systems for a portable data locker
    Patent number: 10033743
    Abstract: The embodiments provide for binding files to an external drive, a secured external drive, or portable data locker. The files are bound in order to help restrict or to prevent access and modification by certain computers or users. Computers or users that are authorized or within the authorized domain are permitted full access. The files stored on the external drive may be bound in various ways. The files may be encapsulated in a wrapper that restricts the use and access to these files. The bound files may require execution of a specific application, plug-in, or extension. A computer may thus be required to execute program code that limits the use of the secured files. In one embodiment, the external drive provides the required program code to the computer. In other embodiments, the required program code may be downloaded from a network or provided by an external authority.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: July 24, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lambertus Hesselink, Rajesh K. Batra
  • Digital rights management system transfer of content and distribution
    Patent number: 8914634
    Abstract: The present invention relates to digital rights management (DRM) for content that may be downloaded and securely transferred from one storage to another storage. The storage may be a disk drive, or network attached storage. The storage performs cryptographic operations and provides a root of trust. The DRM system enables secure copying or transfer of content from one storage device to another storage device. In this embodiment, a trusted server that is authenticated and trusted by both storage devices brokers the transfer of content. The trusted server may be a separate entity of the DRM system or may be a component or function of an existing server of the DRM system. In another embodiment, the storage devices may transfer content in a peer-to-peer fashion. The transfer of content may be authorized and controlled based on a digital certificate associated with the content.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: David L. Blankenbeckler, Danny Ybarra, Lambertus Hesselink
  • Managed peer-to-peer applications, systems and methods for distributed data access and storage
    Patent number: 9894141
    Abstract: Secure and remote operation of a remote computer from a local computer over a network includes authenticating a remote computer for connection to a computer over the network and/or a local computer for connection to a remote computer over the network; establishing a secure connection therebetween; and integrating a desktop of a remote computer on a display of a 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: May 17, 2016
    Date of Patent: February 13, 2018
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Lambertus Hesselink, Dharmarus Rizal, Eric S. Bjornson
  • Reflector-based off-axis optical system for holographic storage
    Patent number: 6104511
    Abstract: The holographic storage and retrieval system according to the present invention comprises one convex reflector and one concave reflector having the same optical axis. The reflective surfaces of the two reflectors are opposite each other. The concave reflector is normally larger than the convex reflector. The holographic storage medium is positioned at the focal surface of the concave reflector. The spherical reflector system according to the present invention has nearly ideal performance off-axis: high bandwidth, low aberration imaging is permitted at a number of radial and axial locations. Thus, multiple SLM/CCD pairs can be placed off-axis to access the same storage medium and implement multiple interconnects.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: August 15, 2000
    Assignee: Siros Technologies, Inc.
    Inventors: Lambertus Hesselink, Mark E. McDonald, John F. Heanue, Andrew J. Daiber
  • Methods and systems for a personal multimedia content archive
    Patent number: 10019741
    Abstract: The embodiments provide for legally transferring multimedia content stored on a medium to a personal content archive device. The device is configured to consolidate a user's content into a single device or secured storage that allows easy access to the content while preserving the digital rights of the content. When a content medium has been provided, the device queries a registration service over a network, such as the Internet, to register the content and indicate that it was legitimately obtained. The device may then be authorized to download and store an authorized version of the content into its secured storage. The authorized version may be the same or a variation of the registered content. The content may then be downloaded from one or more content sources. The registration process may be based on several criteria, such as an authenticity check of the medium, a fee payment, and the like.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: July 10, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventor: Lambertus Hesselink
  • APPARATUS WITH FLEXIBLE X-RAY GRATINGS
    Publication number: 20200222017
    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: Application
    Filed: January 9, 2020
    Publication date: July 16, 2020
    Inventors: Yao-Te CHENG, Ludwig GALAMBOS, Lambertus HESSELINK
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