Patents by Inventor Yaojun Sun

Yaojun Sun 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: 8239900
    Abstract: What is disclosed is a method of operating a video system. The method includes, in a video server, monitoring a geographic location of a wireless communication device, transferring reference frames of a video for delivery to the wireless communication device over a wireless communication system if the geographic location is within a group of predefined geographic areas and stopping the transfer of the reference frames if the geographic location is not within the group of predefined geographic areas. The method also includes, in the video server, transferring update frames of the video for delivery to the wireless communication device over the wireless communication system without regard to whether the geographic location is within the group of predefined geographic areas. The method also includes, in the wireless communication device, receiving the reference frames and the update frames of the video over the wireless communication system and displaying the video.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: August 7, 2012
    Assignee: Clearwire IP Holdings LLC
    Inventor: Yaojun Sun
  • Patent number: 8239911
    Abstract: What is disclosed is a method of operating a video system. The method includes determining a projected geographic path of a mobile communication device and determining a transfer schedule for reference frames of a video based on the projected geographic path. The method also includes transferring the reference frames of the video based on the transfer schedule for delivery to the mobile communication device over a wireless communication system and transferring update frames of the video for delivery to the mobile communication device over the wireless communication system without regard to the projected geographic path.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: August 7, 2012
    Assignee: Clearwire IP Holdings LLC
    Inventor: Yaojun Sun
  • Patent number: 8234158
    Abstract: A method, system, and apparatus are provided for integrating advertisements with a multimedia stream to create a resultant media stream. The depicted embodiments analyze a text-based data stream a multimedia stream to identify advertisement insertion points. Further, the depicted embodiments communicate with a rule-based database to acquire cue requirements and an advertising database to receive the advertisements. The cue requirements are used to incorporate the advertisements into with the multimedia stream to produce a resulting content stream. The resulting content stream may be provided to a user and/or computing device.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: July 31, 2012
    Assignee: Sprint Communications Company L.P.
    Inventors: Yaojun Sun, Lyle T Bertz, Chuma Ubakaeze Agogbua, Christopher J. Mateski
  • Patent number: 8214520
    Abstract: Media, methods and systems are provided for coordinating changes of network sources for media streams in a telecommunications network. The streams communicate instances of media content via packets to devices. A first network source streams packets of an instance of media content to a device. Each packet includes information regarding the temporal ordering of that packet within the instance and information regarding the sequencing of the packet within the stream. It is determined that a second network source should stream the instance of media content. A point in the temporal ordering within the instance is identified and communicated at which the second network source will provide the instance of media content. The second network source streams to the mobile device the instance of media content from the identified point, without requiring adjustment of the information regarding the sequencing of the packets within the stream.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: July 3, 2012
    Assignee: Sprint Communications Company L.P.
    Inventors: Lyle T. Bertz, Ayodeji Abidogun, Badri P. Subramanyan, Yaojun Sun, John W. Davis
  • Patent number: 8191163
    Abstract: Methods, systems, and media are provided for rights protection of an instance of media content in a hybrid downloading and streaming media environment. A request from a device to download an instance of media content is communicated. Verification is obtained as to whether or not the device is authorized to receive and execute the instance. The instance of media content is streamed so that portions may be downloaded. The instance of media content also includes interspersed, non-storable authorization information. When subsequent execution of the instance of stored media content is attempted, a subsequent request for the authorization information is communicated. Only the authorization information is streamed for the subsequent request, allowing execution without burdening network resources with data-intensive streams.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 29, 2012
    Assignee: Sprint Communications Company L.P.
    Inventors: Yaojun Sun, Jing Gu
  • Publication number: 20120071178
    Abstract: Methods and systems are described for providing a presence service that is useful for mobile telecommunications devices. A plurality of outgoing presence updates are sent to a presence client. The system monitors the level of network traffic and determines whether the client is in a region of high network load, and if so, the system throttles the outgoing presence updates during the condition of high network load. The level of throttling may depend at least in part on the amount of time that has elapsed since the presence client began a presence session, and/or the amount of time that has elapsed since an incoming presence update was received from the presence client. In determining the latter amount of elapsed time, the system may consider only the amount of time elapsed since an incoming non-automatic presence update was received from the presence client.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 22, 2012
    Applicant: SPRINT SPECTRUM L.P.
    Inventors: Yaojun Sun, Jing Qu, Joseph Schaedler, Wei-Ming Lan, Douglas R. Green
  • Patent number: 8064925
    Abstract: Methods and systems for determining the density and velocity of wireless communication devices (WCDs) on a road are provided. A preferred embodiment involves determining a set of WCDs that are being served by a plurality of wireless coverage areas that intersect the road. This set of WCDs is narrowed to include only those WCDs that are (1) presumed to be in motion and (2) within a predefined geographic definition of the road. The density and aggregate velocity of the resulting WCDs is determined. From these determinations, the traffic density and aggregate traffic velocity of vehicles on the road can be estimated and an associated output can be provided.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: November 22, 2011
    Assignee: Sprint Spectrum L.P.
    Inventors: Yaojun Sun, Zheng Cai
  • Patent number: 8060121
    Abstract: Methods and systems are described for providing a presence service that is particularly useful for mobile telecommunications devices. A plurality of outgoing presence updates are sent to a presence client. The system monitors the level of network traffic and determines whether the client is in a region of high network load. If the client is in a region experiencing a condition of high network load, the system throttles the outgoing presence updates during the condition of high network load. The level of throttling may depend at least in part on the amount of time that has elapsed since the presence client began a presence session, and/or the amount of time that has elapsed since an incoming presence update was received from the presence client. In determining the latter amount of elapsed time, the system may consider only the amount of time elapsed since an incoming non-automatic presence update was received from the presence client.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: November 15, 2011
    Assignee: Sprint Spectrum L.P.
    Inventors: Yaojun Sun, Jing Qu, Joseph Schaedler, Wei-Ming Lan, Douglas R. Green
  • Patent number: 8045557
    Abstract: Methods, media, and systems are provided for optimizing the use of broadcast channels for group communication streams on a wireless telecommunications data network. Transmission proxy servers associated with base stations are used to determine whether a broadcast channel or unicast channel is most efficient for transmission of a group communication stream. Transmission proxy servers examine factors such as number of users, movement, duration and bandwidth required to make the channel determination. A contact management server coordinates the authentication across multiple access networks in coordination with the transmission proxy servers. Delivery can be more flexible, higher service levels can be more easily guaranteed, and secure but seamless handoffs are possible utilizing the claimed embodiments.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: October 25, 2011
    Assignee: Clear Wireless LLC
    Inventors: Yaojun Sun, Jing Qu
  • Patent number: 8032671
    Abstract: Systems, methods, and computer-readable media for resuming a media object presented following a data loss event are provided. A physical disconnection that occurs at a point during the presentation of the media object is detected. The physical disconnection interrupts the presentation of the media object. Upon detecting the physical disconnection, a reestablishment of the physical connection is detected. Subsequently, an option to resume the presentation of the media object at the interrupted point is presented to a user.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: October 4, 2011
    Assignee: Sprint Communications Company L.P.
    Inventor: Yaojun Sun
  • Patent number: 7930421
    Abstract: Media, methods and systems are provided for coordinating changes of network sources for media streams in a telecommunications network. The streams communicate instances of media content via packets to devices. A first network source streams packets of an instance of media content to a device. Each packet includes information regarding the temporal ordering of that packet within the instance and information regarding the sequencing of the packet within the stream. It is determined that a second network source should stream the instance of media content. A point in the temporal ordering within the instance is identified and communicated at which the second network source will provide the instance of media content. The second network source streams to the mobile device the instance of media content from the identified point, without requiring adjustment of the information regarding the sequencing of the packets within the stream.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: April 19, 2011
    Assignee: Sprint Communications Company L.P.
    Inventors: Lyle Bertz, Ayodeji Abidogun, Badri P. Surbramanyan, Yaojun Sun, John W. Davis
  • Patent number: 7877525
    Abstract: Systems, methods, and computer-readable media for resuming a media object presented following a data loss event are provided. A physical disconnection that occurs at a point during the presentation of the media object is detected. The physical disconnection interrupts the presentation of the media object. Upon detecting the physical disconnection, a reestablishment of the physical connection is detected. Subsequently, an option to resume the presentation of the media object at the interrupted point is presented to a user.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: January 25, 2011
    Assignee: Sprint Communications Company L.P.
    Inventor: Yaojun Sun
  • Publication number: 20100040134
    Abstract: What is disclosed is a method of operating a video system. The method includes, in a video server, monitoring a quality indicator for wireless communications between a wireless communication system and a wireless communication device, transferring reference frames of a video for delivery to the wireless communication device over the wireless communication system if the quality indicator indicates a particular quality level and stopping the transfer of the reference frames if the quality indicator does not indicate the particular quality level, and transferring update frames of the video for delivery to the wireless communication device over the wireless communication system without regard to whether the quality indicator indicates the particular quality level. The method also includes, in the wireless communication device, receiving the reference frames and the update frames of the video over the wireless communication system, and displaying the video.
    Type: Application
    Filed: August 18, 2008
    Publication date: February 18, 2010
    Applicant: Sprint Communications Company L.P.
    Inventor: Yaojun Sun