Patents by Inventor Yiu Lee
Yiu Lee 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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Patent number: 12634344Abstract: A destination host on a first network may attempt to initiate a communication session with a source host on a second network. The attempt may be intercepted by a first policy enforcement point, which may forward a message to the source host associated with the communication session. The source host may send an acknowledgment to the destination host via the first policy enforcement point. A policy decision point may determine that the communication session is permissible. The policy decision point may send a response to the first policy enforcement point and a second policy enforcement point. The response may indicate an approval of the communication session. The source host may respond to the destination host through either a first connection path and the first policy enforcement point or a second connection and the second policy enforcement point.Type: GrantFiled: February 24, 2022Date of Patent: May 19, 2026Assignee: Comcast Cable Communications, LLCInventors: Charles A. Helfinstine, Yiu Lee, Bin Wen
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Publication number: 20260113300Abstract: An identifier, for example, an identifier of a domain and/or a host of the domain (e.g., a fully qualified domain name (FQDN), etc.), such as a service management device (e.g., a server, a web server, a computing device, a web host device, a webpage, etc.), may be modified (e.g., hashed, encrypted, etc.) by a network device (e.g., a server, a domain name system (DNS) server, a DNS over hypertext transfer protocol secure (HTTPS) server/gateway (DoH server), DNS over Transport Layer Security (TLS) server/gateway (DoT server), a network management device, a computing device, etc.), sent to a user device (e.g., a client device, a smart device, a mobile device, a content output device, a computing device, a web browser, a search engine, etc.), and reused by the user device to request a service (e.g., a web service, a webpage, a file, content, a content item, etc.).Type: ApplicationFiled: December 17, 2025Publication date: April 23, 2026Inventors: Charles Helfinstine, Yiu Lee, Thomas Modayil Jacob
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Patent number: 12549510Abstract: An identifier, for example, an identifier of a domain and/or a host of the domain (e.g., a fully qualified domain name (FQDN), etc.), such as a service management device (e.g., a server, a web server, a computing device, a web host device, a webpage, etc.), may be modified (e.g., hashed, encrypted, etc.) by a network device (e.g., a server, a domain name system (DNS) server, a DNS over hypertext transfer protocol secure (HTTPS) server/gateway (DoH server), DNS over Transport Layer Security (TLS) server/gateway (DoT server), a network management device, a computing device, etc.), sent to a user device (e.g., a client device, a smart device, a mobile device, a content output device, a computing device, a web browser, a search engine, etc.), and reused by the user device to request a service (e.g., a web service, a webpage, a file, content, a content item, etc.).Type: GrantFiled: April 29, 2021Date of Patent: February 10, 2026Assignee: Comcast Cable Communications, LLCInventors: Charles Helfinstine, Yiu Lee, Thomas Modayil Jacob
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Publication number: 20250088482Abstract: A network device (e.g., a server, a domain name system (DNS) server, a DNS over Hypertext Transfer Protocol Secure (HTTPS) server (DoH server), a network management device, etc.) may determine a time duration, such as a time duration, based on a request for a communication session from a device. In response, the network device may determine a modified time duration for the communication session based on a type of the device, type of user associated with the device, and/or type of an application requesting the communication session.Type: ApplicationFiled: November 22, 2024Publication date: March 13, 2025Inventors: Yiu Lee, Charles Helfinstine, Thomas Modayil Jacob
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Patent number: 12192167Abstract: A network device (e.g., a server, a domain name system (DNS) server, a DNS over Hypertext Transfer Protocol Secure (HTTPS) server (DoH server), a network management device, etc.) may determine a time duration, such as a time duration, based on a request for a communication session from a device. In response, the network device may determine a modified time duration for the communication session based on a type of the device, type of user associated with the device, and/or type of an application requesting the communication session.Type: GrantFiled: October 17, 2023Date of Patent: January 7, 2025Assignee: Comcast Cable Communications, LLCInventors: Yiu Lee, Charles Helfinstine, Thomas Modayil Jacob
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Publication number: 20240129272Abstract: A network device (e.g., a server, a domain name system (DNS) server, a DNS over Hypertext Transfer Protocol Secure (HTTPS) server (DoH server), a network management device, etc.) may determine a time duration, such as a time duration, based on a request for a communication session from a device. In response, the network device may determine a modified time duration for the communication session based on a type of the device, type of user associated with the device, and/or type of an application requesting the communication session.Type: ApplicationFiled: October 17, 2023Publication date: April 18, 2024Inventor: Yiu Lee
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Patent number: 11831601Abstract: A network device (e.g., a server, a domain name system (DNS) server, a DNS over Hypertext Transfer Protocol Secure (HTTPS) server (DoH server), a network management device, etc.) may determine a time duration, such as a time duration, based on a request for a communication session from a device. In response, the network device may determine a modified time duration for the communication session based on a type of the device, type of user associated with the device, and/or type of an application requesting the communication session.Type: GrantFiled: September 1, 2021Date of Patent: November 28, 2023Assignee: Comcast Cable Communications, LLCInventor: Yiu Lee
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Publication number: 20230246946Abstract: A computing device may receive a request to join a multicast of content. The request may comprise a user device identifier associated with the user device. The computer device may receive a second request to leave the multicast of the content. The second request may comprise the user device identifier. The computing device may determine a quantity of data received by the user device from the multicast of the content. The computing device may determine the quantity of data received based on the request and the second request. The computing device may apply the quantity of data to an account associated with the user device.Type: ApplicationFiled: January 28, 2022Publication date: August 3, 2023Inventors: Yiu LEE, Bin WEN, Mannarmannan VENKATESAN
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Publication number: 20230069337Abstract: A network device (e.g., a server, a domain name system (DNS) server, a DNS over Hypertext Transfer Protocol Secure (HTTPS) server (DoH server), a network management device, etc.) may determine a time duration, such as a time duration, based on a request for a communication session from a device. In response, the network device may determine a modified time duration for the communication session based on a type of the device, type of user associated with the device, and/or type of an application requesting the communication session.Type: ApplicationFiled: September 1, 2021Publication date: March 2, 2023Inventor: Yiu Lee
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Publication number: 20220353233Abstract: An identifier, for example, an identifier of a domain and/or a host of the domain (e.g., a fully qualified domain name (FQDN), etc.), such as a service management device (e.g., a server, a web server, a computing device, a web host device, a webpage, etc.), may be modified (e.g., hashed, encrypted, etc.) by a network device (e.g., a server, a domain name system (DNS) server, a DNS over hypertext transfer protocol secure (HTTPS) server/gateway (DoH server), DNS over Transport Layer Security (TLS) server/gateway (DoT server), a network management device, a computing device, etc.), sent to a user device (e.g., a client device, a smart device, a mobile device, a content output device, a computing device, a web browser, a search engine, etc.), and reused by the user device to request a service (e.g., a web service, a webpage, a file, content, a content item, etc.).Type: ApplicationFiled: April 29, 2021Publication date: November 3, 2022Inventors: Charles Helfinstine, Yiu Lee, Thomas Modayil Jacob
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Publication number: 20220182419Abstract: A destination host on a first network may attempt to initiate a communication session with a source host on a second network. The attempt may be intercepted by a first policy enforcement point, which may forward a message to the source host associated with the communication session. The source host may send an acknowledgment to the destination host via the first policy enforcement point. A policy decision point may determine that the communication session is permissible. The policy decision point may send a response to the first policy enforcement point and a second policy enforcement point. The response may indicate an approval of the communication session. The source host may respond to the destination host through either a first connection path and the first policy enforcement point or a second connection and the second policy enforcement point.Type: ApplicationFiled: February 24, 2022Publication date: June 9, 2022Inventors: Charles A. Helfinstine, Yiu Lee, Bin Wen
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Patent number: 11297108Abstract: A destination host on a first network may attempt to initiate a communication session with a source host on a second network. The attempt may be intercepted by a first policy enforcement point, which may forward a message to the source host associated with the communication session. The source host may send an acknowledgment to the destination host via the first policy enforcement point. A policy decision point may determine that the communication session is permissible. The policy decision point may send a response to the first policy enforcement point and a second policy enforcement point. The response may indicate an approval of the communication session. The source host may respond to the destination host through either a first connection path and the first policy enforcement point or a second connection and the second policy enforcement point.Type: GrantFiled: December 28, 2018Date of Patent: April 5, 2022Assignee: COMCAST CABLE COMMUNICATIONS, LLCInventors: Charles A. Helfinstine, Yiu Lee, Bin Wen
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Publication number: 20200213358Abstract: A destination host on a first network may attempt to initiate a communication session with a source host on a second network. The attempt may be intercepted by a first policy enforcement point, which may forward a message to the source host associated with the communication session. The source host may send an acknowledgment to the destination host via the first policy enforcement point. A policy decision point may determine that the communication session is permissible. The policy decision point may send a response to the first policy enforcement point and a second policy enforcement point. The response may indicate an approval of the communication session. The source host may respond to the destination host through either a first connection path and the first policy enforcement point or a second connection and the second policy enforcement point.Type: ApplicationFiled: December 28, 2018Publication date: July 2, 2020Inventors: Charles A. Helfinstine, Yiu Lee, Bin Wen
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Patent number: 10033804Abstract: Systems and methods are provided for a pull model for delivery of data such as content metadata among interconnected content delivery networks (CDNi), allowing for accurate metadata information in appropriate edge servers in a large CDNi system. When a request for an asset in a CDN (CDN A) is to be served by another, interconnected CDN (CDN B), a link to the location where the metadata is stored within CDN A can be provided along with the request for CDN B to serve the content to the user. The link can be passed to the appropriate edge device in CDN B, which can retrieve the metadata to set up and support the content session. The encrypted information can also be passed recursively by CDN B to other CDNs with which it is interconnected.Type: GrantFiled: January 27, 2015Date of Patent: July 24, 2018Assignee: Comcast Cable Communications, LLCInventors: Agustin Schapira, Yiu Lee
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Patent number: 9621442Abstract: A network monitoring and network congestion analysis can be performed based on a comparison of data packets at multiple different network nodes installed at different locations on a communication path. A downstream network node may be installed at a user location while an upstream network may be installed at an access router further up the network. A network congestion analyzer may receive data packet information including timestamps from both network nodes, and may compare the data packet information to group the data packets into application flows and match the corresponding packets from the different network nodes. Based on the data packet matching, the network congestion analyzer may calculate packet loss, packet delay, packet delay variation, and perform other network congestion analysis techniques for the application flows corresponding to a user's various devices and the applications executing on those devices.Type: GrantFiled: August 3, 2015Date of Patent: April 11, 2017Assignee: Comcast Cable Communications, LLCInventors: Yiu Lee, Alain Durand
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Publication number: 20160065424Abstract: A network monitoring and network congestion analysis can be performed based on a comparison of data packets at multiple different network nodes installed at different locations on a communication path. A downstream network node may be installed at a user location while an upstream network may be installed at an access router further up the network. A network congestion analyzer may receive data packet information including timestamps from both network nodes, and may compare the data packet information to group the data packets into application flows and match the corresponding packets from the different network nodes. Based on the data packet matching, the network congestion analyzer may calculate packet loss, packet delay, packet delay variation, and perform other network congestion analysis techniques for the application flows corresponding to a user's various devices and the applications executing on those devices.Type: ApplicationFiled: August 3, 2015Publication date: March 3, 2016Inventors: Yiu Lee, Alain Durand
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Patent number: 9130845Abstract: A network monitoring and network congestion analysis can be performed based on a comparison of data packets at multiple different network nodes installed at different locations on a communication path. A downstream network node may be installed at a user location while an upstream network may be installed at an access router further up the network. A network congestion analyzer may receive data packet information including timestamps from both network nodes, and may compare the data packet information to group the data packets into application flows and match the corresponding packets from the different network nodes. Based on the data packet matching, the network congestion analyzer may calculate packet loss, packet delay, packet delay variation, and perform other network congestion analysis techniques for the application flows corresponding to a user's various devices and the applications executing on those devices.Type: GrantFiled: July 11, 2013Date of Patent: September 8, 2015Assignee: Comcast Cable Communications, LLCInventors: Yiu Lee, Alain Durand
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Publication number: 20150180968Abstract: Systems and methods are provided for a pull model for delivery of data such as content metadata among interconnected content delivery networks (CDNi), allowing for accurate metadata information in appropriate edge servers in a large CDNi system. When a request for an asset in a CDN (CDN A) is to be served by another, interconnected CDN (CDN B), a link to the location where the metadata is stored within CDN A can be provided along with the request for CDN B to serve the content to the user. The link can be passed to the appropriate edge device in CDN B, which can retrieve the metadata to set up and support the content session. The encrypted information can also be passed recursively by CDN B to other CDNs with which it is interconnected.Type: ApplicationFiled: January 27, 2015Publication date: June 25, 2015Inventors: Augustin Schapira, Yiu Lee
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Publication number: 20130294259Abstract: A network monitoring and network congestion analysis can be performed based on a comparison of data packets at multiple different network nodes installed at different locations on a communication path. A downstream network node may be installed at a user location while an upstream network may be installed at an access router further up the network. A network congestion analyzer may receive data packet information including timestamps from both network nodes, and may compare the data packet information to group the data packets into application flows and match the corresponding packets from the different network nodes. Based on the data packet matching, the network congestion analyzer may calculate packet loss, packet delay, packet delay variation, and perform other network congestion analysis techniques for the application flows corresponding to a user's various devices and the applications executing on those devices.Type: ApplicationFiled: July 11, 2013Publication date: November 7, 2013Inventors: Yiu Lee, Alain Durand
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Patent number: 8509072Abstract: A network monitoring and network congestion analysis can be performed based on a comparison of data packets at multiple different network nodes installed at different locations on a communication path. A downstream network node may be installed at a user location while an upstream network may be installed at an access router further up the network. A network congestion analyzer may receive data packet information including timestamps from both network nodes, and may compare the data packet information to group the data packets into application flows and match the corresponding packets from the different network nodes. Based on the data packet matching, the network congestion analyzer may calculate packet loss, packet delay, packet delay variation, and perform other network congestion analysis techniques for the application flows corresponding to a user's various devices and the applications executing on those devices.Type: GrantFiled: March 7, 2011Date of Patent: August 13, 2013Assignee: Comcast Cable Communications, LLCInventors: Yiu Lee, Alain Durand