Patents by Inventor Christopher R. Knox

Christopher R. Knox 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: 10291734
    Abstract: Live stream delivery within a content delivery network (CDN) includes recording the stream using a recording tier, and playing the stream using a player tier. Recording begins when the stream is received in a source format. The stream is then converted into an intermediate format (IF), which comprises a stream manifest, one or more fragment indexes (FI), and a set of IF fragments. A player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the proxy of a request for the stream, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index. Using the fragment index, the IF fragments are retrieved to the HTTP proxy, converted to a target format, and then served in response to the client request. Preferably, fragments are accessed, cached and served by the proxy via HTTP.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: May 14, 2019
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok Lalwani, William Law, Thomas Devanneaux
  • Publication number: 20170324796
    Abstract: A method of delivering a live stream is implemented within a content delivery network (CDN) and includes the high level functions of recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes a set of sub-steps that begins when the stream is received at a CDN entry point in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within the CDN and comprises a stream manifest, a set of one or more fragment indexes (FI), and a set of IF fragments. The player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the HTTP proxy of a request for the stream or a portion thereof, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 9, 2017
    Applicant: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard
  • Publication number: 20170199988
    Abstract: In a content protection scheme, and in response to a request for a content segment received by a server, the server generates and associates with the segment a message that confers entitlement to a session-specific key from which one or more decryption keys may be derived. The decryption keys are useful to decrypt the segment at runtime as it is about to be rendered by a player. Before delivery, the server encrypts the segment to generate an encrypted fragment, and it then serves the encrypted fragment (and the message) in response to the request. At the client, information in the message is used to obtain the session-specific key. Using that key, the decryption keys are derived, and those keys are then used to decrypt the received encrypted fragment. The decryption occurs at runtime. The approach protects content while in transit to and at rest in the client browser environment.
    Type: Application
    Filed: March 28, 2017
    Publication date: July 13, 2017
    Inventors: Christopher R. Knox, Alex Olugbile
  • Publication number: 20170111464
    Abstract: Live stream delivery within a content delivery network (CDN) includes recording the stream using a recording tier, and playing the stream using a player tier. Recording begins when the stream is received in a source format. The stream is then converted into an intermediate format (IF), which comprises a stream manifest, one or more fragment indexes (FI), and a set of IF fragments. A player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the proxy of a request for the stream, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index. Using the fragment index, the IF fragments are retrieved to the HTTP proxy, converted to a target format, and then served in response to the client request. Preferably, fragments are accessed, cached and served by the proxy via HTTP.
    Type: Application
    Filed: December 26, 2016
    Publication date: April 20, 2017
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok Lalwani, William Law, Thomas Devanneaux
  • Patent number: 9608806
    Abstract: In a content protection scheme, and in response to a request for a content segment received by a server, the server generates and associates with the segment a message that confers entitlement to a session-specific key from which one or more decryption keys may be derived. The decryption keys are useful to decrypt the segment at runtime as it is about to be rendered by a player. Before delivery, the server encrypts the segment to generate an encrypted fragment, and it then serves the encrypted fragment (and the message) in response to the request. At the client, information in the message is used to obtain the session-specific key. Using that key, the decryption keys are derived, and those keys are then used to decrypt the received encrypted fragment. The decryption occurs at runtime. The approach protects content while in transit to and at rest in the client browser environment.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: March 28, 2017
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Alex Olugbile
  • Patent number: 9537967
    Abstract: A method of delivering a live stream is implemented within a content delivery network (CDN) and includes the high level functions of recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes a set of sub-steps that begins when the stream is received at a CDN entry point in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within the CDN and comprises a stream manifest, a set of one or more fragment indexes (FI), and a set of IF fragments. The player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the HTTP proxy of a request for the stream or a portion thereof, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: January 3, 2017
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok Lalwani, Will Law, Thomas Devanneaux
  • Patent number: 9485238
    Abstract: Methods and apparatus for preventing unauthorized access to online content, including in particular streaming video and other media, are provided. In various embodiments, techniques are provided to authorize users and to authenticate clients (e.g., client media players) to a content delivery system. The content delivery system may comprise a content delivery network with one or more content or “edge” servers therein. The requesting client is sent a program at the time of content delivery. The program may be embedded in the content stream, or sent outside of the stream. The program contains instructions that are executed by the client and cause it to return identifying information to the content delivery system, which can then determine whether the client player is recognized and, if so, authorized to view the content. Unrecognized and/or altered players may be prevented from viewing the content.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: November 1, 2016
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, William Law, Thomas Devanneaux, Nicholas Shayne Brookins, Akinwale Olugbemiga Olugbile
  • Publication number: 20150249854
    Abstract: A method of delivering a live stream includes recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes sub-steps that begin when the stream is received in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within an overlay network. The player process begins when a requesting client is associated with a network proxy. In response to receipt at the proxy of a request for the stream or a portion thereof, the proxy retrieves (either from the archive or the data store) a stream manifest and at least one fragment index. Using the fragment index, the intermediate format file fragments are retrieved to the proxy, converted to a target format, and then served in response to the client request.
    Type: Application
    Filed: May 18, 2015
    Publication date: September 3, 2015
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok J. Lalwani
  • Patent number: 9038116
    Abstract: A method of delivering a live stream is implemented within a content delivery network (CDN) and includes the high level functions of recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes a set of sub-steps that begins when the stream is received at a CDN entry point in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within the CDN and comprises a stream manifest, a set of one or more fragment indexes (FI), and a set of IF fragments. The player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the HTTP proxy of a request for the stream or a portion thereof, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: May 19, 2015
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok Jaiprakash Lalwani
  • Publication number: 20150046714
    Abstract: In a content protection scheme, and in response to a request for a content segment received by a server, the server generates and associates with the segment a message that confers entitlement to a session-specific key from which one or more decryption keys may be derived. The decryption keys are useful to decrypt the segment at runtime as it is about to be rendered by a player. Before delivery, the server encrypts the segment to generate an encrypted fragment, and it then serves the encrypted fragment (and the message) in response to the request. At the client, information in the message is used to obtain the session-specific key. Using that key, the decryption keys are derived, and those keys are then used to decrypt the received encrypted fragment. The decryption occurs at runtime. The approach protects content while in transit to and at rest in the client browser environment.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Inventors: Christopher R. Knox, Alex Olugbile
  • Publication number: 20140337958
    Abstract: Methods and apparatus for preventing unauthorized access to online content, including in particular streaming video and other media, are provided. In various embodiments, techniques are provided to authorize users and to authenticate clients (e.g., client media players) to a content delivery system. The content delivery system may comprise a content delivery network with one or more content or “edge” servers therein. The requesting client is sent a program at the time of content delivery. The program may be embedded in the content stream, or sent outside of the stream. The program contains instructions that are executed by the client and cause it to return identifying information to the content delivery system, which can then determine whether the client player is recognized and, if so, authorized to view the content. Unrecognized and/or altered players may be prevented from viewing the content.
    Type: Application
    Filed: June 4, 2014
    Publication date: November 13, 2014
    Applicant: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, William Law, Thomas Devanneaux, Nicholas Shayne Brookins, Akinwale Olugbemiga Olugbile
  • Patent number: 8873751
    Abstract: In a content protection scheme, and in response to a request for a content segment received by a server, the server generates and associates with the segment a message that confers entitlement to a session-specific key from which one or more decryption keys may be derived. The decryption keys are useful to decrypt the segment at runtime as it is about to be rendered by a player. Before delivery, the server encrypts the segment to generate an encrypted fragment, and it then serves the encrypted fragment (and the message) in response to the request. At the client, information in the message is used to obtain the session-specific key. Using that key, the decryption keys are derived, and those keys are then used to decrypt the received encrypted fragment. The decryption occurs at runtime. The approach protects content while in transit to and at rest in the client browser environment.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: October 28, 2014
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Alex Olugbile
  • Patent number: 8769614
    Abstract: Methods and apparatus for preventing unauthorized access to online content, including in particular streaming video and other media, are provided. In various embodiments, techniques are provided to authorize users and to authenticate clients (e.g., client media players) to a content delivery system. The content delivery system may comprise a content delivery network with one or more content or “edge” servers therein. The requesting client is sent a program at the time of content delivery. The program may be embedded in the content stream, or sent outside of the stream. The program contains instructions that are executed by the client and cause it to return identifying information to the content delivery system, which can then determine whether the client player is recognized and, if so, authorized to view the content. Unrecognized and/or altered players may be prevented from viewing the content.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: July 1, 2014
    Assignee: Akamai Technologies, Inc.
    Inventors: Christopher R. Knox, Will Law, Thomas Devanneaux, Nicholas Shayne Brookins, Akinwale Olugbemiga Olugbile
  • Publication number: 20120275597
    Abstract: In a content protection scheme, and in response to a request for a content segment received by a server, the server generates and associates with the segment a message that confers entitlement to a session-specific key from which one or more decryption keys may be derived. The decryption keys are useful to decrypt the segment at runtime as it is about to be rendered by a player. Before delivery, the server encrypts the segment to generate an encrypted fragment, and it then serves the encrypted fragment (and the message) in response to the request. At the client, information in the message is used to obtain the session-specific key. Using that key, the decryption keys are derived, and those keys are then used to decrypt the received encrypted fragment. The decryption occurs at runtime. The approach protects content while in transit to and at rest in the client browser environment.
    Type: Application
    Filed: December 29, 2011
    Publication date: November 1, 2012
    Applicant: AKAMAI TECHNOLOGIES, INC.
    Inventors: Christopher R. Knox, Alex Olugbile
  • Publication number: 20120265853
    Abstract: This patent document describes, among other things, distributed computer platforms for online delivery of multimedia, including HD video, at broadcast audience scale to a variety of runtime environments and client devices in both fixed line and mobile environments. The teachings hereof can be applied to deliver live and on-demand content streams via computer networks. The teachings also relate to the ingestion of content streams in a given source format and the serving of the stream in a given target format. For example, a system might have machines in a content delivery network that ingest live streams in a source format, use an intermediate format to transport the stream within the system, and output the stream in a target format to clients that have requested (e.g., with an HTTP request) the stream. The streams may be archived for later playback.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 18, 2012
    Applicant: AKAMAI TECHNOLOGIES, INC.
    Inventors: Christopher R. Knox, Nicholas S. Brookins, Vaishnav Janardhan, William P. Korbe, III, Ashok Lalwani, Prasanna Laghate, Stephen L. Ludin, Akinwale O. Olugbile, Moses P. Pawar, Chandan H. Rao, Abdal Salam Faisal Padinjareveetil, Ronnie So, Babu Suryanarayanan
  • Publication number: 20110296048
    Abstract: A method of delivering a live stream is implemented within a content delivery network (CDN) and includes the high level functions of recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes a set of sub-steps that begins when the stream is received at a CDN entry point in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within the CDN and comprises a stream manifest, a set of one or more fragment indexes (FI), and a set of IF fragments. The player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the HTTP proxy of a request for the stream or a portion thereof, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index.
    Type: Application
    Filed: December 24, 2010
    Publication date: December 1, 2011
    Applicant: AKAMAI TECHNOLOGIES, INC.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard
  • Publication number: 20110173345
    Abstract: A method of delivering a live stream is implemented within a content delivery network (CDN) and includes the high level functions of recording the stream using a recording tier, and playing the stream using a player tier. The step of recording the stream includes a set of sub-steps that begins when the stream is received at a CDN entry point in a source format. The stream is then converted into an intermediate format (IF), which is an internal format for delivering the stream within the CDN and comprises a stream manifest, a set of one or more fragment indexes (FI), and a set of IF fragments. The player process begins when a requesting client is associated with a CDN HTTP proxy. In response to receipt at the HTTP proxy of a request for the stream or a portion thereof, the HTTP proxy retrieves (either from the archive or the data store) the stream manifest and at least one fragment index.
    Type: Application
    Filed: August 17, 2010
    Publication date: July 14, 2011
    Applicant: AKAMAI TECHNOLOGIES, INC.
    Inventors: Christopher R. Knox, Philip A. Lisiecki, James Mutton, Chuck Bernard, Ashok Lalwani, Will Law, Thomas Devanneaux
  • Publication number: 20030158928
    Abstract: Server systems have distributed file systems that provides services for loading, staging, distributing and delivering streamed media content. The file system may be remotely accessible through a web browser, or other client application. The file system described herein can allow a customer of the hosting server to access and control the web site files from a remote location, and manipulate and manage the files stored on the host site, to configure the site as desired. To this end, the distributed file system provides a process for allowing a user to upload streaming media content from a client site to the host, or to another location accessible by the file system. A staging process allows the user to set or adjust meta-data characteristics of the uploaded media asset, and a distribution process is capable of replicating the media asset and distributing the replicated versions of that asset across the data network.
    Type: Application
    Filed: November 13, 2002
    Publication date: August 21, 2003
    Inventors: Christopher R. Knox, James S. Sherry, Troy S. Snyder, Randy Levine
  • Publication number: 20020083124
    Abstract: Server systems have distributed file systems that provides services for loading, staging, distributing and delivering streamed media content. The file system may be remotely accessible through a web browser, or other client application. The file system described herein can allow a customer of the hosting server to access and control the web site files from a remote location, and manipulate and manage the files stored on the host site, to configure the site as desired. To this end, the distributed file system provides a process for allowing a user to upload streaming media content from a client site to the host, or to another location accessible by the file system. A staging process allows the user to set or adjust meta-data characteristics of the uploaded media asset, and a distribution process is capable of replicating the media asset and distributing the replicated versions of that asset across the data network.
    Type: Application
    Filed: May 11, 2001
    Publication date: June 27, 2002
    Inventors: Christopher R. Knox, Christopher W. Levy, David C. Boyle, James S. Sherry, Troy S. Snyder