Patents by Inventor Shishir Pardikar

Shishir Pardikar 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: 8335836
    Abstract: Implementing a consistent user name-space on networked computing devices includes various components and methods. When a network connection between a local or host computing device and one or more remote computing devices is present, remote items are represented using the same methodology as items located on the host computing device. To the user, remote and local items are indistinguishable. When the network connection is lost or items located on a remote computer are otherwise unavailable, the unavailable items remain represented on the host computing device. Unavailable items are represented in a way that informs the user that the items may not be fully accessed.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: December 18, 2012
    Assignee: Microsoft Corporation
    Inventors: Brian S Aust, David G. De Vorchik, Yun Lin, Timothy P McKee, Jason F. Moore, Shishir Pardikar, Mohammed Samji, David C Steere, Navjot Virk
  • Publication number: 20120131128
    Abstract: Implementing a consistent user name-space on networked computing devices includes various components and methods. When a network connection between a local or host computing device and one or more remote computing devices is present, remote items are represented using the same methodology as items located on the host computing device. To the user, remote and local items are indistinguishable. When the network connection is lost or items located on a remote computer are otherwise unavailable, the unavailable items remain represented on the host computing device. Unavailable items are represented in a way that informs the user that the items may not be fully accessed.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 24, 2012
    Applicant: MICROSOFT CORPORATION
    Inventors: BRIAN S. AUST, DAVID G. DE VORCHIK, YUN LIN, TIMOTHY P. MCKEE, JASON F. MOORE, SHISHIR PARDIKAR, MOHAMMED SAMJI, DAVID C. STEERE, NAVJOT VIRK
  • Patent number: 8108483
    Abstract: A system and method for implementing a consistent user name-space on networked computing devices is provided. When a network connection between a local or host computing device and one or more remote computing devices is present, remote items are represented using the same methodology as items located on the host computing device. To the user, remote and local items are indistinguishable. When the network connection is lost or items located on a remote computer are otherwise unavailable, the unavailable items remain represented on the host computing device. Unavailable items are represented in a way that informs the user that the items may not be fully accessed.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: January 31, 2012
    Assignee: Microsoft Corporation
    Inventors: Brian S. Aust, David G. De Vorchik, Yun Lin, Timothy P. McKee, Jason F. Moore, Shishir Pardikar, Mohammed Samji, David C. Steere, Navjot Virk
  • Patent number: 7895249
    Abstract: A method of purging cached open files from a client-side delayed close list on a remote file system. The remote file system stores a unique file identifier for each cached open file which is independent of the cached file's namespace. In response to a delete or rename command of a remote target file, the remote file system obtains a target file identifier from the target file's server. The remote file system then compares the target file identifier with each of the cached file's unique file identifier. If a cached file's unique file identifier matches the target file identifier, the cached file is purged from the delayed close list.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: February 22, 2011
    Assignee: Microsoft Corporation
    Inventors: Yun Lin, Shishir Pardikar, Venkataraman Ramanathan
  • Patent number: 7529778
    Abstract: A system and method that automatically and transparently enable access to prior file or folder versions for a selected file or folder. When a file or folder is selected for version location, such as via a user interface, prior versions are automatically located and time data (e.g., determined from timestamps) identifying each of the prior versions is displayed. The user can then select a prior version for restoration and thereby recover from changed file data. The present invention can be implemented using remote file servers, or with local file system volumes. Prior to displaying the versions for selection, attributes of the prior versions may be requested, whereby only versions that actually exist can be displayed, and/or only versions with possibly different data are displayed, reducing unnecessary selection for restoration.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: May 5, 2009
    Assignee: Microsoft Corporation
    Inventors: Brian K. Dewey, David Kruse, Shishir Pardikar, Sanjay Anand
  • Patent number: 7437429
    Abstract: Access to WebDAV (Distributed Authoring and Versioning) servers is provided in a manner that is essentially transparent to applications. A WebDAV redirector and related components support file system I/O requests and network requests directed to WebDAV servers identified by URI (Universal Resource Identifier) names, or by a drive may be mapped to a WebDAV share. An application's create or open I/O requests directed to a WebDAV server are detected, and result in a local copy of the file being downloaded and cached for local access. When closed, the local file is uploaded to the WebDAV server. Network-related requests such as for browsing that are directed to a WebDAV server are also handled transparently. WebDAV files may be locally encrypted and decrypted at the file system level, transparent to applications and the WebDAV server, via an encrypting file system that performs local encryption and decryption at the local file system level.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: October 14, 2008
    Assignee: Microsoft Corporation
    Inventors: Shishir Pardikar, Rohan Kumar, Yun Lin, Praerit Garg, Jianrong Gu
  • Patent number: 7392345
    Abstract: An improved method and system for client-side caching that transparently caches suitable network files for offline use. A cache mechanism in a network redirector transparently intercepts requests to access server files, and if the requested file is locally cached, satisfies the request from the cache when possible. Otherwise the cache mechanism creates a local cache file and satisfies the request from the server, and also fills in a sparse cached file as reads for data in ranges that are missing in the cached file are requested and received from the server. A background process also fills in local files that are sparse, using the existing handle of already open server files, or opening, reading from and closing other server files. Security is also provided by maintaining security information received from the server for files that are in the cache, and using that security information to determine access to the file when offline.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: June 24, 2008
    Assignee: Microsoft Corporation
    Inventors: Shishir Pardikar, Joseph L. Linn, Balan Sethu Raman, Robert E. Corrington
  • Patent number: 7349943
    Abstract: A system and method that automatically and transparently handle client-side caching of network file data, independent of any remote file handling protocol. A protocol-independent client-side caching mechanism is inserted as a service that handles file-related requests directed to a network, and attempts to satisfy the requests via a client-side caching persistent store. By way of pre-process and post-process calls on a file create request, the caching mechanism creates file-related data structures, and overwrites the information in those structures that a buffering service uses to call back to a network redirector, whereby the client-side caching mechanism inserts itself into the communication flow between the network redirector and the buffering service.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 25, 2008
    Assignee: Microsoft Corporation
    Inventors: Yun Lin, Navjot Virk, Shishir Pardikar, Rohan Kumar
  • Publication number: 20080028149
    Abstract: An improved method and system for client-side caching that transparently caches suitable network files for offline use. A cache mechanism in a network redirector transparently intercepts requests to access server files, and if the requested file is locally cached, satisfies the request from the cache when possible. Otherwise the cache mechanism creates a local cache file and satisfies the request from the server, and also fills in a sparse cached file as reads for data in ranges that are missing in the cached file are requested and received from the server. A background process also fills in local files that are sparse, using the existing handle of already open server files, or opening, reading from and closing other server files. Security is also provided by maintaining security information received from the server for files that are in the cache, and using that security information to determine access to the file when offline.
    Type: Application
    Filed: August 7, 2006
    Publication date: January 31, 2008
    Applicant: Microsoft Corporation
    Inventors: Shishir Pardikar, Joseph L. Linn, Balan Sethu Raman, Robert E. Corrington
  • Patent number: 7280956
    Abstract: An encrypted file system (EFS) and an underlying file transfer protocol to permit a client to encrypt, decrypt, and transfer file(s) resident on a server are disclosed. A user at a client computer can open, read, and write to encrypted files, including header information associated with encrypted files, and can add users to or remove users from an encrypted file.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: October 9, 2007
    Assignee: Microsoft Corporation
    Inventors: David B. Cross, Jainrong Gu, Duncan Bryce, Shishir Pardikar, Pradeep Jnana Madhavarapu, Scott A. Field, Kelvin S. Yiu
  • Patent number: 7231397
    Abstract: A system to perform transacted remote file operations over a network includes a client and a server. The client and server each include a transaction manager (TM) and a file system (FS). The client also includes a redirector (RDR), while the server includes a server application (SRV). The RDR receives a request for a remote transacted file operation. In response, the RDR retrieves the transaction from the request. The RDR may use the TM to marshall the transaction for transmission to the server. The RDR sends the transaction to the server over the network. The SRV component receives the transaction, which the TM and FS of the server then use to perform the file operation. The server then returns the file operation result to the client via the network.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: June 12, 2007
    Assignee: Microsoft Corporation
    Inventors: Pradeep Jnana Madhavarapu, Shishir Pardikar, Balan Sethu Raman, Surendra Verma, Jon Cargille, Jacob Lacouture
  • Patent number: 7089284
    Abstract: An improved method and system for client-side caching that transparently caches suitable network files for offline use. A cache mechanism in a network redirector transparently intercepts requests to access server files, and if the requested file is locally cached, satisfies the request from the cache when possible. Otherwise the cache mechanism creates a local cache file and satisfies the request from the server, and also fills in a sparse cached file as reads for data in ranges that are missing in the cached file are requested and received from the server. A background process also fills in local files that are sparse, using the existing handle of already open server files, or opening, reading from and closing other server files. Security is also provided by maintaining security information received from the server for files that are in the cache, and using that security information to determine access to the file when offline.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: August 8, 2006
    Assignee: Microsoft Corporation
    Inventors: Shishir Pardikar, Joseph L. Linn, Balan Sethu Raman, Robert E. Corrington
  • Publication number: 20050198385
    Abstract: A system and method for implementing a consistent user name-space on networked computing devices is provided. When a network connection between a local or host computing device and one or more remote computing devices is present, remote items are represented using the same methodology as items located on the host computing device. To the user, remote and local items are indistinguishable. When the network connection is lost or items located on a remote computer are otherwise unavailable, the unavailable items remain represented on the host computing device. Unavailable items are represented in a way that informs the user that the items may not be fully accessed.
    Type: Application
    Filed: January 30, 2004
    Publication date: September 8, 2005
    Inventors: Brian Aust, David De Vorchik, Yun Lin, Timothy McKee, Jason Moore, Shishir Pardikar, Mohammed Samji, David Steere, Navjot Virk
  • Publication number: 20050165735
    Abstract: The present invention provides a novel client side caching (CSC) infrastructure that supports transition states at the directory level to facilitate a seamless operation across connectivity states between client and remote server. More specifically, persistent caching is performed to safeguard the user (e.g., client) and/or the client applications across connectivity interruptions and/or bandwidth changes. This is accomplished in part by caching to a client data store the desirable file(s) together with the appropriate file access parameters. Moreover, the client maintains access to cached files during periods of disconnect. Furthermore, portions of a path can be offline while other portions upstream can remain online. CSC operates on the logical path which cooperates with DFS which operates on the physical path to keep track of files cached, accessed and changes in the directories. In addition, truth on the client is facilitated whether or not a conflict of file copies exists.
    Type: Application
    Filed: February 22, 2005
    Publication date: July 28, 2005
    Applicant: Microsoft Corporation
    Inventors: Yun Lin, Navjot Virk, Brian Aust, Shishir Pardikar, David Steere, Mohammed Samji
  • Publication number: 20050160096
    Abstract: The present invention provides a novel client side caching (CSC) infrastructure that supports transition states at the directory level to facilitate a seamless operation across connectivity states between client and remote server. More specifically, persistent caching is performed to safeguard the user (e.g., client) and/or the client applications across connectivity interruptions and/or bandwidth changes. This is accomplished in part by caching to a client data store the desirable file(s) together with the appropriate file access parameters. Moreover, the client maintains access to cached files during periods of disconnect. Furthermore, portions of a path can be offline while other portions upstream can remain online. CSC operates on the logical path which cooperates with DFS which operates on the physical path to keep track of files cached, accessed and changes in the directories. In addition, truth on the client is facilitated whether or not a conflict of file copies exists.
    Type: Application
    Filed: February 22, 2005
    Publication date: July 21, 2005
    Applicant: Microsoft Corporation
    Inventors: Yun Lin, Navjot Virk, Brian Aust, Shishir Pardikar, David Steere, Mohammed Samji
  • Publication number: 20050102370
    Abstract: The present invention provides a novel client side caching (CSC) infrastructure that supports transition states at the directory level to facilitate a seamless operation across connectivity states between client and remote server. More specifically, persistent caching is performed to safeguard the user (e.g., client) and/or the client applications across connectivity interruptions and/or bandwidth changes. This is accomplished in part by caching to a client data store the desirable file(s) together with the appropriate file access parameters. Moreover, the client maintains access to cached files during periods of disconnect. Furthermore, portions of a path can be offline while other portions upstream can remain online. CSC operates on the logical path which cooperates with DFS which operates on the physical path to keep track of files cached, accessed and changes in the directories. In addition, truth on the client is facilitated whether or not a conflict of file copies exists.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 12, 2005
    Inventors: Yun Lin, David Steere, Navjot Virk, Shishir Pardikar, Ahmed Mohamed
  • Patent number: 6889233
    Abstract: A method of purging cached open files from a client-side delayed close list on a remote file system. The remote file system stores a unique file identifier for each cached open file which is independent of the cached file's namespace. In response to a delete or rename command of a remote target file, the remote file system obtains a target file identifier from the target file's server. The remote file system then compares the target file identifier with each of the cached file's unique file identifier. If a cached file's unique file identifier matches the target file identifier, the cached file is purged from the delayed close list.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: May 3, 2005
    Assignee: Microsoft Corporation
    Inventors: Yun Lin, Shishir Pardikar, Venkataraman Ramanathan
  • Publication number: 20050091187
    Abstract: A system to perform transacted remote file operations over a network includes a client and a server. The client and server each include a transaction manager (TM) and a file system (FS). The client also includes a redirector (RDR), while the server includes a server application (SRV). The RDR receives a request for a remote transacted file operation. In response, the RDR retrieves the transaction from the request. The RDR may use the TM to marshall the transaction for transmission to the server. The RDR sends the transaction to the server over the network. The SRV component receives the transaction, which the TM and FS of the server then use to perform the file operation. The server then returns the file operation result to the client via the network.
    Type: Application
    Filed: October 24, 2003
    Publication date: April 28, 2005
    Inventors: Pradeep Madhavarapu, Shishir Pardikar, Balan Raman, Surendra Verma, Jon Cargille, Jacob Lacouture
  • Publication number: 20050091487
    Abstract: An encrypted file system (EFS) and an underlying file transfer protocol to permit a client to encrypt, decrypt, and transfer file(s) resident on a server are disclosed. A user at a client computer can open, read, and write to encrypted files, including header information associated with encrypted files, and can add users to or remove users from an encrypted file.
    Type: Application
    Filed: October 24, 2003
    Publication date: April 28, 2005
    Inventors: David Cross, Jainrong Gu, Duncan Bryce, Shishir Pardikar, Pradeep Madhavarapu, Scott Field, Kelvin Yiu
  • Publication number: 20050091226
    Abstract: The present invention provides a novel client side caching (CSC) infrastructure that supports transition states at the directory level to facilitate a seamless operation across connectivity states between client and remote server. More specifically, persistent caching is performed to safeguard the user (e.g., client) and/or the client applications across connectivity interruptions and/or bandwidth changes. This is accomplished in part by caching to a client data store the desirable file(s) together with the appropriate file access parameters. Moreover, the client maintains access to cached files during periods of disconnect. Furthermore, portions of a path can be offline while other portions upstream can remain online. CSC operates on the logical path which cooperates with DFS which operates on the physical path to keep track of files cached, accessed and changes in the directories. In addition, truth on the client is facilitated whether or not a conflict of file copies exists.
    Type: Application
    Filed: October 23, 2003
    Publication date: April 28, 2005
    Inventors: Yun Lin, Navjot Virk, Brian Aust, Shishir Pardikar, David Steere, Mohammed Samji