Patents by Inventor Yongdong Zhao
Yongdong Zhao 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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Publication number: 20180359301Abstract: In one example, the encoding rate at which data is delivered over a network is estimated by intercepting a data packet from a data streaming session, wherein the data packet contains at least a portion of one of a plurality of file segments containing portions of a file, and wherein a number of the plurality of file segments that is delivered via the data streaming session is limited to a maximum number. The mean size of the plurality of file segments is estimated from data contained in the data packet. A plurality of potential sizes of the plurality of file segments is calculated, wherein each potential size corresponds to one number between one and the maximum number. An encoding rate of the data streaming session is calculated, based at least in part on which potential size of the plurality of potential sizes is closest to the mean size.Type: ApplicationFiled: June 9, 2017Publication date: December 13, 2018Inventors: Yongdong Zhao, Zhengye Liu, Yali Liu, Zuxian Guo
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Publication number: 20180324234Abstract: In one example, the present disclosure describes a device, computer-readable medium, and method for estimating the streaming rate at which data is delivered over a network. For instance, in one example, a data packet is intercepted from a data streaming session conducted between a first device and a second device connected over a network. A size of a file segment contained in the data packet is calculated. The file segment corresponds to a portion of an item of multimedia content being delivered via the data streaming session. The encoding rate of the data streaming session is then calculated based at least in part on the size of the file segment.Type: ApplicationFiled: May 5, 2017Publication date: November 8, 2018Inventors: YONGDONG ZHAO, Yali Liu, Zhengye Liu, Zuxian Guo
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Publication number: 20180288773Abstract: Aspects of the subject disclosure may include, for example, a system that provides for obtaining, by a server comprising a processor, network parameter data from an eNodeB of a wireless network. The server can determine a predicted bandwidth for a group of end user devices in a coverage area of the eNodeB according to the network parameter data. The server can receive, from an end user device of the group of end user devices, a request for the predicted bandwidth. The server can provide the predicted bandwidth to the end user device. The providing of the predicted bandwidth enables the end user device to provide a video chunk request to a content server that is based on a selected chunk delivery schedule and facilitates streaming of video content to the end user device from the content server. Other embodiments are disclosed.Type: ApplicationFiled: March 31, 2017Publication date: October 4, 2018Inventors: Zhengye Liu, ZUXIAN GUO, DHRUV GUPTA, XIAOJUN TANG, JIN WANG, WEIHUA YE, YONGDONG ZHAO
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Publication number: 20180242044Abstract: Aspects of the subject disclosure may include, for example, a method comprising: sending by an end user device, to a digital video recorder, a first request to receive a requested media content item; receiving by the end user device, responsive to the sending of the first request, a metadata file, wherein the metadata file comprises authentication information and a network address of a media content server where the requested media content item is located; sending to the media content server by the end user device, responsive to the receiving of the metadata file, a second request to receive the requested media content item, wherein the second request is sent to the network address, wherein the second request comprises the authentication information contained in the metadata file, and wherein the second request comprises an identification of the requested media content item; and receiving by the end user device, responsive to the authentication information and the identification of the requested media contentType: ApplicationFiled: February 17, 2017Publication date: August 23, 2018Inventors: Yongdong ZHAO, Baofeng JIANG
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Publication number: 20180103283Abstract: Aspects of the subject disclosure may include, for example, a device including a processing system including a processor and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, including monitoring network traffic to determine a transmission control protocol traffic pattern, determining a target video rate from the transmission control protocol traffic pattern, and modifying an over-the-top video delivery service network according to the target video rate. Other embodiments are disclosed.Type: ApplicationFiled: October 10, 2016Publication date: April 12, 2018Inventors: ZHENGYE LIU, JIN WANG, YALI LIU, YONGDONG ZHAO
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Patent number: 9712787Abstract: A system and method of delivering video content is disclosed. In a particular embodiment, the method includes receiving channel selection data from a set-top box device via an Internet Protocol Television (IPTV) access network. The channel selection data indicates a selection of an IPTV channel. The method also includes sending a rapid channel change (RCC) request to a distribution switch/router system via a subscriber virtual local area network (VLAN) associated with the set-top box device after receiving the channel selection data. The RCC request indicates the selected IPTV channel.Type: GrantFiled: July 2, 2007Date of Patent: July 18, 2017Assignee: AT&T Intellectual Property I, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao
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Patent number: 9462343Abstract: A method includes receiving, at a server, a retry request from a media device. The retry request requests a data packet associated with video content and includes an overhead bandwidth factor corresponding to a ratio between an overhead bandwidth to be used to send the data packet in response to the retry request and a nominal bandwidth used to send video content to the media device. The method further includes, in response to the retry request, sending the data packet to the media device based on the overhead bandwidth factor.Type: GrantFiled: November 5, 2014Date of Patent: October 4, 2016Assignee: AT&T Intellectual Property I, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao
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Publication number: 20160158785Abstract: A spray system and a use method thereof are provided. The spray system includes: a plurality of cascaded spray members having a plurality of spray heads, a spray liquid supply system, a spray liquid recovery system and a control system, wherein the control system is configured to control the spray liquid supply system to provide a spray liquid for substrates to be sprayed for spraying in the working stage of the spray system and control the spray liquid recovery system to recycle the spray liquid after the spraying process is over; a cleaning solution supply system configured to provide a cleaning solution for the spray heads of the spray members for cleaning under the control of the control system in the cleaning stage; and a liquid waste disposal system configured to discharge liquid waste after cleaning under the control of the control system after the cleaning stage is over.Type: ApplicationFiled: July 16, 2015Publication date: June 9, 2016Inventors: Wei ZHOU, Yongdong ZHAO, Liming XU, Jintao XIE, Lin HUANG, Liang YAO
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Patent number: 9038173Abstract: A method includes receiving an indication of at least one detected security issue at a network device. The indication is received at a security manager processor from a security agent. The method includes selecting, via the security manager processor, at least one executable security object responsive to the indication. The security manager processor verifies compatibility between the at least one executable security object, the network device, and communication media. The method also includes sending the at least one executable security object to the network device via the security manager processor to provide a protective security measure to the network device against the at least one detected security issue upon execution of the at least one executable security object.Type: GrantFiled: September 6, 2012Date of Patent: May 19, 2015Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Zesen Chen, Yongdong Zhao, Peter Chou, Brian A. Gonsalves, Michael Taylor
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Publication number: 20150058899Abstract: A method includes receiving, at a server, a retry request from a media device. The retry request requests a data packet associated with video content and includes an overhead bandwidth factor corresponding to a ratio between an overhead bandwidth to be used to send the data packet in response to the retry request and a nominal bandwidth used to send video content to the media device. The method further includes, in response to the retry request, sending the data packet to the media device based on the overhead bandwidth factor.Type: ApplicationFiled: November 5, 2014Publication date: February 26, 2015Inventors: Kuo-Hui Liu, Yongdong Zhao
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Patent number: 8910219Abstract: A method includes receiving at a set-top box device first video content associated with a requested channel from a first source. The method includes, in response to receiving the first content, requesting second video content associated with the requested channel from a second source. The method includes, in response to receiving the second video content, determining whether at least one data packet associated with the requested channel was not received based on a comparison of first data packets corresponding to the first video content and second data packets corresponding to the second video content. In response to a determination that at least one data packet was not received, sending a retry request to the first source. The retry request includes an overhead bandwidth factor.Type: GrantFiled: May 22, 2012Date of Patent: December 9, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao
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Patent number: 8887216Abstract: A method includes receiving data from a set-top box device at an access system via an access network, the data indicating a selection of a channel at the set-top box device, the data including a multicast group address. The method also includes sending copies of video data packets of the channel from the access system for storage in a first-in first-out cache associated with the channel. The method further includes automatically connecting the set-top box device to a multicast stream of the selected channel after a particular number of video data packets are sent to the set-top box device from the cache. The particular number of video data packets corresponds to a time period between communicating successive random access point packets of the channel and is less than a capacity of the cache.Type: GrantFiled: September 11, 2012Date of Patent: November 11, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao
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Patent number: 8873379Abstract: A system and method for routing data, the system having a processor, an interface in communication with the processor and capable of being in communication with a second system for routing data, a memory unit in communication with the processor, the memory unit having a network routing table having a plurality of routes, the plurality of routes having a first route; and a network failure route selection logic including instructions adapted to configure the processor to determine when the first route is inoperative, transmit a first data packet to the second system for routing data when the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.Type: GrantFiled: September 13, 2012Date of Patent: October 28, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Shih-Chung Tom Soon, Yongdong Zhao, Teong Yee Tan, Holly Chen, Bei Zhou
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Systems, methods, and computer program products for optimizing content distribution in data networks
Patent number: 8527648Abstract: Systems, methods, and computer program products are for selecting content for distribution via a data network, and creating at least one content distribution channel to distribute specific content of the selected content. The specific content is partitioned from the selected content based upon a criterion common to the specific content.Type: GrantFiled: October 18, 2010Date of Patent: September 3, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Yali Liu, Mung Chiang, Raghvendra Savoor, Bruce Alden Schine, Michael Tisiker, Yongdong Zhao -
Publication number: 20130121138Abstract: A system and method for routing data, the system having a processor, an interface in communication with the processor and capable of being in communication with a second system for routing data, a memory unit in communication with the processor, the memory unit having a network routing table having a plurality of routes, the plurality of routes having a first route; and a network failure route selection logic including instructions adapted to configure the processor to determine when the first route is inoperative, transmit a first data packet to the second system for routing data when the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.Type: ApplicationFiled: September 13, 2012Publication date: May 16, 2013Inventors: Shih-Chung Tom Soon, Yongdong Zhao, Teong Yee Tan, Holly Chen, Bei Zhou
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Publication number: 20130014255Abstract: A method includes receiving an indication of at least one detected security issue at a network device. The indication is received at a security manager processor from a security agent. The method includes selecting, via the security manager processor, at least one executable security object responsive to the indication. The security manager processor verifies compatibility between the at least one executable security object, the network device, and communication media. The method also includes sending the at least one executable security object to the network device via the security manager processor to provide a protective security measure to the network device against the at least one detected security issue upon execution of the at least one executable security object.Type: ApplicationFiled: September 6, 2012Publication date: January 10, 2013Applicant: AT&T Intellectual Property I, L.P.Inventors: Zesen Chen, Yongdong Zhao, Peter Chou, Brian A. Gonsalves, Michael Taylor
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Publication number: 20130007825Abstract: A method includes receiving data from a set-top box device at an access system via an access network, the data indicating a selection of a channel at the set-top box device, the data including a multicast group address. The method also includes sending copies of video data packets of the channel from the access system for storage in a first-in first-out cache associated with the channel. The method further includes automatically connecting the set-top box device to a multicast stream of the selected channel after a particular number of video data packets are sent to the set-top box device from the cache. The particular number of video data packets corresponds to a time period between communicating successive random access point packets of the channel and is less than a capacity of the cache.Type: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Applicant: AT&T Intellectual Property l, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao
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Publication number: 20120329784Abstract: Disclosed are compounds having the formula: wherein R1, R2, R3, R4, R5, and R6 are as defined herein, and methods of making and using the same.Type: ApplicationFiled: January 11, 2011Publication date: December 27, 2012Inventors: Lara S. Kallander, Brian Griffin Lawhorn, Joanne Philp, Yongdong Zhao
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Patent number: 8295162Abstract: A system and method for routing data, the system having a processor, an interface in communication with the processor and capable of being in communication with a second system for routing data, a memory unit in communication with the processor, the memory unit having a network routing table having a plurality of routes, the plurality of routes having a first route; and a network failure route selection logic including instructions adapted to configure the processor to determine when the first route is inoperative, transmit a first data packet to the second system for routing data when the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.Type: GrantFiled: May 16, 2006Date of Patent: October 23, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Shih-Chung Tom Soon, Yongdong Zhao, Teong Yee Tan, Holly Chen, Bei Zhou
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Patent number: 8291463Abstract: A system and method of delivering video content is disclosed. In a particular embodiment, the method includes storing video data packets of an Internet Protocol Television (IPTV) channel at an access switch/router system that communicates with an IPTV access network. The method also includes receiving data at the access switch/router system indicating a selection of the IPTV channel from a set-top box device via the IPTV access network. Further, the method includes sending copies of the stored video data packets of the IPTV channel to the set-top box device via the IPTV access network.Type: GrantFiled: June 4, 2007Date of Patent: October 16, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Kuo-Hui Liu, Yongdong Zhao