Patents by Inventor Gary Chia-Jui Chang

Gary Chia-Jui Chang 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).

  • Selective rate-adaptation in video telephony
    Patent number: 9674737
    Abstract: A system and method for rate-adaptation of a video telephony (VT) session is disclosed. In one example, there is provided a method that includes receiving a first information set indicative of a start of a handover of a device from a first Radio Access Technology (RAT) to a second RAT. The method further includes receiving a second information set indicative of an end of the handover. The method further includes adjusting a rate-adaptation protocol for the VT session based at least in part on the first and second information sets.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: June 6, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ibrahim Hajj-Ahmad, Vikram Singh, Gary Chia-Jui Chang, Jyotirmoy Das, Tien-Hsin Lee, Sanjeev Mittal
  • SELECTIVE RATE-ADAPTATION IN VIDEO TELEPHONY
    Publication number: 20170055184
    Abstract: A system and method for rate-adaptation of a video telephony (VT) session is disclosed. In one example, there is provided a method that includes receiving a first information set indicative of a start of a handover of a device from a first Radio Access Technology (RAT) to a second RAT. The method further includes receiving a second information set indicative of an end of the handover. The method further includes adjusting a rate-adaptation protocol for the VT session based at least in part on the first and second information sets.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Inventors: Ibrahim Hajj-Ahmad, Vikram Singh, Gary Chia-Jui Chang, Jyotirmoy Das, Tien-Hsin Lee, Sanjeev Mittal
  • Selective rate-adaptation in video telephony
    Patent number: 9491669
    Abstract: A system and method for rate-adaptation of a video telephony (VT) session is disclosed. In one example, there is provided a method that includes receiving a first information set indicative of a start of a handover of a device from a first Radio Access Technology (RAT) to a second RAT. The method further includes receiving a second information set indicative of an end of the handover. The method further includes adjusting a rate-adaptation protocol for the VT session based at least in part on the first and second information sets.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: November 8, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ibrahim Hajj-Ahmad, Vikram Singh, Gary Chia-Jui Chang, Jyotirmoy Das, Tien-Hsin Lee, Sanjeev Mittal
  • IMS BASED WWAN-WLAN MOBILITY
    Publication number: 20160021673
    Abstract: Methods, systems, and devices for IMS based WWAN-WLAN mobility are described. A user equipment (UE) may generate channel quality metrics and media performance metrics for a source radio access technology (RAT). The UE may then select a state for the source RAT metrics. The UE may also generate channel quality metrics for a target RAT and select a state for the target RAT. The UE may make a handover decision based on the states of the RATs and on priority levels for the RATs.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 21, 2016
    Inventors: Seyed Ali Ahmadzadeh, Srinivasan Balasubramanian, Gary Chia-Jui Chang, Chinmay Dhodapkar