Patents by Inventor Norman H. Margolus
Norman H. Margolus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20040167935Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc.Inventor: Norman H. Margolus
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Publication number: 20040167938Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040167940Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040167939Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040168058Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventor: Norman H. Margolus
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Publication number: 20040167902Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventor: Norman H. Margolus
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Publication number: 20040167898Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: February 26, 2003Publication date: August 26, 2004Inventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040167934Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040167943Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusetts corporationInventor: Norman H. Margolus
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Publication number: 20040167913Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc., a Massachusets corporationInventor: Norman H. Margolus
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Publication number: 20040168057Abstract: A method by which a disk-based distributed data storage system is organized for protecting historical records of stored data entities. The method comprises recording distinct states of an entity, corresponding to different moments of time, as separate entity versions coexisting within the distributed data storage system, and assigning expiration times to the entity versions independently within each of a plurality of storage sites according to a shared set of rules, before which times deletion is prohibited.Type: ApplicationFiled: January 7, 2004Publication date: August 26, 2004Applicant: Permabit, Inc. a Massachusetts corporationInventors: Norman H. Margolus, Jered J. Floyd, George E. Homsy, Jeffrey M. Keller
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Publication number: 20040162808Abstract: In general, the invention features methods by which more-than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: August 19, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight
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Publication number: 20040143744Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 22, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight, Gill A. Pratt
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Publication number: 20040143743Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 22, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight
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Publication number: 20040143745Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 22, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight
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Publication number: 20040143578Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 22, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight, Gill A. Pratt
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Publication number: 20040139303Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 15, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight
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Publication number: 20040139098Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: January 7, 2004Publication date: July 15, 2004Applicant: Permabit, Inc., a Delaware corporationInventors: Norman H. Margolus, Thomas F. Knight
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Publication number: 20020038296Abstract: In general, the invention features methods by which more than one client program connected to a network stores the same data item on a storage device of a data repository connected to the network. In one aspect, the method comprises encrypting the data item using a key derived from the content of the data item, determining a digital fingerprint of the data item, and storing the data item on the storage device at a location or locations associated with the digital fingerprint. In a second aspect, the method comprises determining a digital fingerprint of the data item, testing for whether the data item is already stored in the repository by comparing the digital fingerprint of the data item to the digital fingerprints of data items already in storage in the repository, and challenging a client that is attempting to deposit a data item already stored in the repository, to ascertain that the client has the full data item.Type: ApplicationFiled: February 16, 2001Publication date: March 28, 2002Inventors: Norman H. Margolus, Thomas F. Knight, Bruce M. Boghosian, Jered J. Floyd, Sam Hartman, George E. Homsy, Gill A. Pratt
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Patent number: 6205533Abstract: A mechanism for performing parallel computations on an emulated spatial lattice by scheduling memory and communication operations on a static mesh-connected array of synchronized processing nodes. The lattice data are divided up among the array of processing nodes, each having a memory and a plurality of processing elements within each node. The memory is assumed to have a hierarchical granular structure that distinguishes groups of bits that are most efficiently accessed together, such as words or rows. The lattice data is organized in memory so that the sets of bits that interact during processing are always accessed together. Such an organization is based on mapping the lattice data into the granular structure of the memories in a manner that has simple spatial translation properties in the emulated space. The mapping permits data movement in the emulated lattice to be achieved by a combination of scheduled memory access and scheduled communication.Type: GrantFiled: August 12, 1999Date of Patent: March 20, 2001Inventor: Norman H. Margolus