Patents by Inventor William M. Pitts

William M. Pitts 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).

  • Publication number: 20210329092
    Abstract: At any instant, a channel's path signature reflects the last successful path used to access file data. During the course of processing a request from an upstream site currently not connected to the target file, the downstream site will establish a connection to the upstream site and then include in its request response a path signature constructed by adding its signature to the channel's path signature.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Inventor: William M. Pitts
  • Patent number: 11050839
    Abstract: At any instant, a channel's path signature reflects the last successful path used to access file data. During the course of processing a request from an upstream site currently not connected to the target file, the downstream site will establish a connection to the upstream site and then include in its request response a path signature constructed by adding its signature to the channel's path signature.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: June 29, 2021
    Inventor: William M. Pitts
  • Publication number: 20190394297
    Abstract: At any instant, a channel's path signature reflects the last successful path used to access file data. During the course of processing a request from an upstream site currently not connected to the target file, the downstream site will establish a connection to the upstream site and then include in its request response a path signature constructed by adding its signature to the channel's path signature.
    Type: Application
    Filed: August 28, 2019
    Publication date: December 26, 2019
    Inventor: William M. Pitts
  • Patent number: 10440141
    Abstract: Large scale high performance file proxy caching sites may be configured to coalesce many client write operations into one very large assemblage of modified file data. At some point the caching site will flush all modified file data downstream towards the origin file server. In some instances the amount of modified data being flushed may be more than can be transferred in a single network request. When multiple network requests are required, the consistency guarantee provided by many filesystems requires that the file either be updated with the data contained in all of the network requests or not be modified at all. In addition, once the first flush request is processed no other file read or write requests can be serviced until the last flush request has been processed. This document discloses methods for performing atomic multi-request flush operations within a large geographically distributed filesystem environment.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: October 8, 2019
    Inventor: William M Pitts
  • Publication number: 20180048733
    Abstract: Large scale high performance file proxy caching sites may be configured to coalesce many client write operations into one very large assemblage of modified file data. At some point the caching site will flush all modified file data downstream towards the origin file server. In some instances the amount of modified data being flushed may be more than can be transferred in a single network request. When multiple network requests are required, the consistency guarantee provided by many filesystems requires that the file either be updated with the data contained in all of the network requests or not be modified at all. In addition, once the first flush request is processed no other file read or write requests can be serviced until the last flush request has been processed. This document discloses methods for performing atomic multi-request flush operations within a large geographically distributed filesystem environment.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 15, 2018
    Inventor: William M. Pitts
  • Publication number: 20170011055
    Abstract: Objects contained within enormous geographically distributed virtual file servers spanning thousands (or even millions) of organizations are each assigned globally unique object identifiers, enabling the implementation of highly distributed indexing and retrieval operations. The file system API (application programming interface) is extended to provide a search capability. A search request targeting a specific domain creates a parallel namespace anchored in that domain's root directory. The parallel namespace, containing directories and links to all objects satisfying the search criteria, may be navigated using the standard file system API. Relevance scores, added as new members of the file attribute structure, enable the construction and presentation of views that convey where the centers of expertise associated with the search matter are located.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 12, 2017
    Inventor: William M Pitts
  • Patent number: 9449017
    Abstract: The consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS are extended to provide a shared memory foundation for efficiently broadcasting real-time high definition video from a source object to large numbers of viewers via the Internet. Distributed applications such as video viewing client applications establish connections to a common distributed file system object, and then each application registers with the underlying distributed file system to receive notifications whenever the video source modifies the source object. The data required to update images maintained by viewing clients is included in notification messages. The distributed file system employs a network of proxy cache nodes. Proxy cache nodes receive notification messages (complete with image update data) and update their cached images of the source object and then retransmit the notification messages towards the viewing clients using IP multicast techniques.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: September 20, 2016
    Inventor: William M Pitts
  • Publication number: 20150006649
    Abstract: At any instant, a channel's path signature reflects the last successful network path used to access file data. Methods whereby a distributed virtual file server, composed of standard file servers and file service proxy caches, uses path signatures to facilitate the re-routing of file system traffic to transparently overcome network link failures.
    Type: Application
    Filed: August 5, 2013
    Publication date: January 1, 2015
    Inventor: William M. Pitts
  • Publication number: 20140006543
    Abstract: Large scale high performance file proxy caching sites may be configured to coalesce many client write operations into one very large assemblage of modified file data. At some point the caching site will flush all modified file data downstream towards the origin file server. In some instances the amount of modified data being flushed may be more than can be transferred in a single network request. When multiple network requests are required, the consistency guarantee provided by many filesystems requires that the file either be updated with the data contained in all of the network requests or not be modified at all. In addition, once the first flush request is processed no other file read or write requests can be serviced until the last flush request has been processed. This document discloses methods for performing atomic multi-request flush operations within a large geographically distributed filesystem environment.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventor: William M Pitts
  • Publication number: 20140006464
    Abstract: It is not possible to maintain extremely tight synchronization of the time keeping clocks of the networked nodes comprising a distributed filesystem. However, when multiple client systems access the same file from different remote locations, a distributed consistency mechanism must ensure that all file read and write requests are only serviced from the latest version of the file. The current industry practice is to disable client-side caching when a concurrent write sharing condition arises (multiple clients active on the file and at least one of them writing). This forces all requests to flow through to the file server and consistency is maintained since all requests are then serviced from the same file image. The current practice sacrifices performance and scalability to maintain consistency.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventor: William M Pitts
  • Publication number: 20140006542
    Abstract: A method for transparently recovering from a network link failure within the context of a single network request/response operation between a client and a server is disclosed. The method requires a robust network infrastructure that provides multiple paths from the client to the server. When a network link fails, network traffic is re-routed around the failure and the request is successfully processed without the client or the server even being made aware of the failure. An error indication is returned to the client system only when the network infrastructure does not provide an alternate path that allows the request to be successfully processed.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventor: William M Pitts
  • Publication number: 20140006618
    Abstract: At any instant, a channel's path signature reflects the last successful path used to access file data. During the course of processing a request from an upstream site currently not connected to the target file, the downstream site will establish a connection to the upstream site and then include in its request response a path signature constructed by adding its signature to the channel's path signature.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventor: William M. Pitts
  • Publication number: 20130325916
    Abstract: A hierarchical distributed search mechanism is integrated into a distributed file system. Traditional file system APIs (create, open, close, read, write, link, rename, delete, . . . ) and the over-the-wire protocols employed to project these APIs into remote client sites (CIFS, NFS, DDS, Appletalk) are extended to enable the dynamic creation of temporary directories containing links to objects identified by search engines (executing at sites “close” to “their” data) as meeting the search criteria specified by the first parameter of a search function call. The search function, derived from the standard file system API function create, is added to the file system API.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 5, 2013
    Inventor: William M. Pitts
  • Publication number: 20130326572
    Abstract: The consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS are extended to provide a shared memory foundation for efficiently broadcasting real-time high definition video from a source object to large numbers of viewers via the Internet. Distributed applications such as video viewing client applications establish connections to a common distributed file system object, and then each application registers with the underlying distributed file system to receive notifications whenever the video source modifies the source object. The data required to update images maintained by viewing clients is included in notification messages. The distributed file system employs a network of proxy cache nodes. Proxy cache nodes receive notification messages (complete with image update data) and update their cached images of the source object and then retransmit the notification messages towards the viewing clients using IP multicast techniques.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 5, 2013
    Inventor: William M. Pitts
  • Patent number: 8504565
    Abstract: A hierarchical distributed search mechanism is integrated into a distributed file system. Traditional file system APIs (create, open, close, read, write, link, rename, delete, . . . ) and the over-the-wire protocols employed to project these APIs into remote client sites (CIFS, NFS, DDS, Appletalk) are extended to enable the dynamic creation of temporary directories containing links to objects identified by search engines (executing at sites “close” to “their” data) as meeting the search criteria specified by the first parameter of a search function call. The search function, derived from the standard file system API function create, is added to the file system API.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: August 6, 2013
    Inventor: William M. Pitts
  • Patent number: 8504597
    Abstract: The consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS are extended to provide a shared memory foundation for efficiently broadcasting real-time high definition video from a source object to large numbers of viewers via the Internet. Distributed applications such as video viewing client applications establish connections to a common distributed file system object, and then each application registers with the underlying distributed file system to receive notifications whenever the video source modifies the source object. The data required to update images maintained by viewing clients is included in notification messages. The distributed file system employs a network of proxy cache nodes. Proxy cache nodes receive notification messages (complete with image update data) and update their cached images of the source object and then retransmit the notification messages towards the viewing clients using IP multicast techniques.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: August 6, 2013
    Inventor: William M. Pitts
  • Patent number: 8005951
    Abstract: In a network of digital computers (20), a method for facilitating access by a first digital computer (24) to a file that is stored in a local file system tree (198) of a second digital computer (22). The method includes establishing, by recursively combining hierarchical file system trees (198) that are exported from one or more NDCs (50), a hierarchical domain tree (200) that encompasses digital computers (24, 26B, 26A and 22) in the network of digital computers (20). A domain manager (212) receives policy attributes, a new type of extended attributes, and enforces policies specified therein. In a particularly preferred embodiment the policy attributes identify at least one module that must be loaded by the first digital computer (24) to extend capabilities of the first digital computer (24) used in processing a file requested from the local file system tree (198) of the second digital computer (22).
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: August 23, 2011
    Inventor: William M. Pitts
  • Publication number: 20100082774
    Abstract: The consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS are extended to provide a shared memory foundation for efficiently broadcasting real-time high definition video from a source object to large numbers of viewers via the Internet. Distributed applications such as video viewing client applications establish connections to a common distributed file system object, and then each application registers with the underlying distributed file system to receive notifications whenever the video source modifies the source object. The data required to update images maintained by viewing clients is included in notification messages. The distributed file system employs a network of proxy cache nodes. Proxy cache nodes receive notification messages (complete with image update data) and update their cached images of the source object and then retransmit the notification messages towards the viewing clients using IP multicast techniques.
    Type: Application
    Filed: December 7, 2009
    Publication date: April 1, 2010
    Inventor: William M. Pitts
  • Publication number: 20100070982
    Abstract: Systems and methods for extending the functionality of the consistency callback mechanisms employed by local file systems such as NTFS and distributed file systems such as DDS, NFS and CIFS so as to provide a shared memory foundation for the support of highly interactive distributed applications are disclosed. Distributed applications establish connections to a common distributed file system object; each application registers the file system events for which it wants to receive a notification (either synchronously or asynchronously). In this manner, each application becomes almost instantly aware of the file access activities for which it registers and which are being performed by the other applications.
    Type: Application
    Filed: November 25, 2009
    Publication date: March 18, 2010
    Inventor: William M. Pitts
  • Publication number: 20100036840
    Abstract: Objects contained within enormous geographically distributed virtual file servers spanning thousands (or even millions) of organizations are each assigned globally unique object identifiers, enabling the implementation of highly distributed indexing and retrieval operations. The file system API (application programming interface) is extended to provide a search capability. A search request targeting a specific domain creates a parallel namespace anchored in that domain's root directory. The parallel namespace, containing directories and links to all objects satisfying the search criteria, may be navigated using the standard file system API. Relevance scores, added as new members of the file attribute structure, enable the construction and presentation of views that convey where the centers of expertise associated with the search matter are located.
    Type: Application
    Filed: October 14, 2009
    Publication date: February 11, 2010
    Inventor: William M. Pitts