Patents by Inventor Sumit Roy

Sumit Roy 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).

  • Patent number: 6857047
    Abstract: A computer system is provided including a processor, a persistent storage device, and a main memory connected to the processor and the persistent storage device. The main memory includes a compressed cache for storing data retrieved from the persistent storage device after compression and an operating system. The operating system includes a plurality of interconnected software modules for accessing the persistent storage device and a filter driver interconnected between two of the plurality of software modules for managing memory capacity of the compressed cache and the buffer cache.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: February 15, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sujoy Basu, Sumit Roy, Rajendra Kumar
  • Publication number: 20050018750
    Abstract: An ultra-wideband transceiver architecture and associated methods are generally described.
    Type: Application
    Filed: March 3, 2003
    Publication date: January 27, 2005
    Inventors: Jeffrey Foerster, Srinivasa Somayazulu, Sumit Roy
  • Publication number: 20050018751
    Abstract: Time-frequency coding in a multi-band ultra-wideband system is generally described. In this regard a hopping code agent is presented to select a frequency hopping code for encoding and decoding.
    Type: Application
    Filed: December 31, 2003
    Publication date: January 27, 2005
    Inventors: Sumit Roy, Jeffrey Foerster, V. Somayazulu
  • Publication number: 20050015765
    Abstract: Methods and systems for selecting media service providers based on static resource information are described. A type of service to be performed on an item of content is identified. The item of content is identified during a session with a client device. A service provider is selected from a plurality of service providers. The selection is based on static service provider and static network information. The selection of a service provider is further based on service session information if the service session information has been received. Information is provided for transferring the session to the selected service provider. The selected service provider performs the service on the item of content.
    Type: Application
    Filed: October 30, 2003
    Publication date: January 20, 2005
    Inventors: Michele Covell, Sumit Roy, John Ankcorn, John Apostolopoulos, Michael Harville, Bo Shen, Wai-tian Tan, Susie Wee
  • Publication number: 20050005025
    Abstract: One embodiment of the invention includes a method for managing a streaming media service. The method includes receiving a request for a streaming media service from a client. The streaming media service includes a plurality of media services components. Additionally, the method includes determining which media service component of the plurality of media services components to assign to a service node of a plurality of service nodes of a network. The method also includes informing each service node assigned to perform a media service component of the plurality of media services components enabling the streaming media service to be performed on a streaming media.
    Type: Application
    Filed: July 4, 2003
    Publication date: January 6, 2005
    Inventors: Michael Harville, Michele Covell, Susie Wee, John Ankcorn, Sumit Roy, Bo Shen
  • Publication number: 20050003769
    Abstract: An ultra-wideband transceiver architecture and associated methods are generally described.
    Type: Application
    Filed: July 2, 2003
    Publication date: January 6, 2005
    Inventors: Jeffrey Foerster, Srinivasa Somayazulu, Sumit Roy
  • Publication number: 20050005019
    Abstract: One embodiment of the invention includes a method for managing a streaming media service. The method includes receiving a request for a streaming media service from a client. It is noted that the streaming media service includes a media service component. Additionally, the method includes selecting a service manager from a plurality of service managers to provide the request to. Furthermore, the method includes selecting a provider from a plurality of providers of a network to assign the media service component. Moreover, the method includes informing said provider assigned to perform the media service component, enabling the streaming media service to be performed on a streaming media.
    Type: Application
    Filed: October 30, 2003
    Publication date: January 6, 2005
    Inventors: Michael Harville, Michele Covell, John Ankcorn, John Apostolopoulos, Sumit Roy, Bo Shen, Wai-Tian Tan, Susie Wee
  • Publication number: 20040258174
    Abstract: An apparatus and associated methods to improve diversity gain while preserving channel throughput in a multicarrier communication channel are generally presented.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 23, 2004
    Inventors: Lei Shao, Sumit Roy, Sumeet Sandhu
  • Publication number: 20040257978
    Abstract: An apparatus and associated methods to improve diversity gain while preserving channel throughput in a multicarrier communication channel are generally presented.
    Type: Application
    Filed: February 27, 2004
    Publication date: December 23, 2004
    Inventors: Lei Shao, Sumit Roy, Sumeet Sandhu
  • Publication number: 20040236854
    Abstract: Methods and systems for servicing content for delivery to a client device are described. An item of content is identified during a session with the client device. A type of service to be performed on the item of content is identified. A provider is selected from a plurality of providers capable of performing the service. The session is transferred to the selected provider, which performs the service on the item of content.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Sumit Roy, Bo Shen, John Ankcorn, John Apostolopoulos, Michele Covell, Michael Harville, Wai-Tian Tan, Susie Wee
  • Publication number: 20040237097
    Abstract: Methods and systems for selecting media service providers are described. A type of service to be performed on an item of content is identified. The item of content is identified during a session with a client device. Information regarding current resource availability is received from a plurality of service providers. The information is ascertained from ongoing resource measurements. A service provider is selected from the plurality of service providers based on the information that is received. Information is provided for transferring the session to the service provider. The service provider performs the service on the item of content.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Michele Covell, Sumit Roy, John Ankcorn, John Apostolopoulos, Michael Harville, Bo Shen, Wai-tian Tan, Susie Wee
  • Publication number: 20040236848
    Abstract: A method and system for managing handoff of media service sessions among service providers in a network are disclosed. Information associated with the media service sessions is received at a service manager. The information at the service manager is used to determine whether to initiate a handoff of any of the media service sessions from a service provider to another service provider. Moreover, if it is determined to initiate the handoff, the handoff is initiated.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Sumit Roy, Bo Shen, John Ankcorn, John Apostolopoulos, Michele Covell, Michael Harville, Wai-Tian Tan, Susie Wee
  • Publication number: 20040236847
    Abstract: Methods and systems for servicing and delivering content to a client device are described. A request that identifies an item of content is received at a portal from the client device. A type of service to be performed on the item of content is identified. A provider of the type of service is identified. Communication with the client device is transferred from the portal to the service provider. The service provider sends service result content to the client device.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Sumit Roy, Bo Shen, John Ankcorn, John Apostolopoulos, Michele Covell, Michael Harville, Wai-Tian Tan, Susie Wee
  • Publication number: 20040236857
    Abstract: Methods and systems for servicing content for delivery to a client device are described. An item of content is identified during a session with the client device. A type of service to be performed on the item of content is identified. An estimate of resources associated with performing the service is used to select a provider from a plurality of providers capable of performing the service. Information for transferring the session to the provider is provided. The provider performs the service on the item of content upon being transferred the session.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Sumit Roy, Michele Covell, John Ankcorn, John Apostolopoulos, Michael Harville, Bo Shen, Wai-Tian Tan, Susie Wee
  • Publication number: 20040236826
    Abstract: One embodiment of the invention includes a method for managing a streaming media service. The method includes receiving a request for a streaming media service from a client and the streaming media service includes a media service component. A service location manager is selected to which to provide the request from a plurality of service location managers. Additionally, a service provider is selected to which to assign the media service component from a plurality of service providers of a network. Furthermore, the service provider is informed of the assignment to perform the media service component. The service provider is caused to prepare to perform the streaming media service on streaming media. Moreover, information is used to determine whether to initiate a handoff of the streaming media service from the service provider to another service provider. If it is determined to initiate the handoff, the handoff is initiated.
    Type: Application
    Filed: October 30, 2003
    Publication date: November 25, 2004
    Inventors: Michael Harville, Michele Covell, John Ankcorn, John Apostolopoulos, Sumit Roy, Bo Shen, Wai-Tian Tan, Susie Wee
  • Patent number: 6757735
    Abstract: A method and system for streaming media data to a fixed client and/or a mobile client. In one method embodiment, the present invention recites encoding media data to be streamed to a client into a first multiple description bitstream and into a second multiple description bitstream. The present method then determines the appropriate plurality of servers from a network of servers onto which the first and second multiple description bitstreams should be distributed. The present embodiment then recites distributing the first and second multiple description bitstreams to the appropriate plurality of servers positioned at intermediate nodes throughout a network such that a client is provided with access to the media data via a plurality of transmission paths. The present method is also well suited to redistribution of multiple description bitstreams to servers based upon time-varying demand, client movement, and the like.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: June 29, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John G. Apostolopulos, Sujoy Basu, Gene Cheung, Raj Kumar, Sumit Roy, Bo Shen, Wai-Tian Tan, Susie J. Wee, Tina Wong
  • Patent number: 6743243
    Abstract: A support device for endoscopic suturless anastomosis between tubular organs include at least a first tubular member provided with a longitudinal slit which permits introduction of the organs to be anastomosed in the device and additional second tubular members in physical continuity with the first tubular member through an opening on the first tubular member. The size of the opening is substantially equal to the luminal area of the second member. The inner and outer diameters of any radial cross section of the second members are constant along its length. The device allows apposition of the two tubular organs to be anastomosed in a variety of spatial patterns and their fixation to each other without sutures or clips, either manually or via remote control, and the creation of luminal continuity between them.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: June 1, 2004
    Inventors: Sumit Roy, Erik Fosse
  • Publication number: 20040102794
    Abstract: The invention concerns a device for temporary coupling an anastomosis prosthesis to an anastomosis apparatus, a deployment apparatus and a prosthesis for performing suturless anastomosis. Coupling of the anastomosis prosthesis to the coupling device is performed by suction and coupling of the coupling device to the deployment tube is performed by a fixation and a fastening mechanism.
    Type: Application
    Filed: March 13, 2003
    Publication date: May 27, 2004
    Inventors: Sumit Roy, Erik Fosse, Ole Elle
  • Patent number: 6705585
    Abstract: A multi-purpose valve includes, a band of a thermodynamic metal alloy with shape memory, with a memorised shape and a transition temperature which lies in the range for the normal body temperature of a mammal. The strip has a linear shape below the transition temperature and assumes the memorised shape above the transition temperature. The memorised shape is preferably a conical spiral with a closed tip, with the result that above the transition temperature range the valve will become a conical spiral.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: March 16, 2004
    Inventor: Sumit Roy
  • Publication number: 20040010593
    Abstract: A method and system thereof for handing off a media session are described. In one embodiment, a first media segment is forwarded to a client node. The first media segment includes a portion of an item of media content stored in lieu of storing the item of media content in its entirety. The item of media content is segmented according to segmentation characteristics. Handoff information used for transferring the media session to another server node is specified. The handoff of the media session to the other server node occurs when the forwarding of the first media segment is completed, such that the handoff occurs between media segments.
    Type: Application
    Filed: July 12, 2002
    Publication date: January 15, 2004
    Inventors: John G. Apostolopoulos, Sumit Roy