Patents by Inventor Ming U. Chang

Ming U. 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).

  • Publication number: 20020081969
    Abstract: A communication system has a communication infrastructure including at least two devices from the group including a cell tower, a first satellite constellation and a second satellite constellation, a stratospheric platform, that are coupled to user terminals through a plurality of dynamic links. The terminal monitors and changes the multiple and dynamic links as the position of the user terminal relative to the said at least two devices. The gateway terminal transmits and receives to said user terminals through at least two devices from the group.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 27, 2002
    Applicant: HUGHES ELECTRONICS CORPORATION
    Inventors: Donald C.D. Chang, Grant J. Beatson, Wah L. Lim, Ming U. Chang
  • Publication number: 20020072332
    Abstract: A communication system has a communication infrastructure and a gateway station communicating a communication signal to the communication infrastructure. An airplane having an antenna coupled to a processing circuit for establishing a plurality of multiple communication links corresponding to the communication infrastructure is used. The gateway station generates multiple datagrams from the television signal and transmits the multiple datagrams through the multiple dynamic links. The antenna receives the datagrams from the infrastructure and the processing circuit and reassembles the datagrams into the communication signal.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 13, 2002
    Applicant: HUGHES ELECTRONICS CORPORATION
    Inventors: Donald C.D. Chang, Wah L. Lim, Ming U. Chang
  • Publication number: 20020072374
    Abstract: A communication system has a plurality of bases stations generating communication portions from a base station communication signal. The plurality of base stations are capable of using the entire allocated bandwidth to generate the base station communication portions. A user terminal establishes a plurality of dynamic links corresponding respectively to the plurality of base stations. The user terminal generates multiple communication portions of a user signal and transmits the multiple communication portions through the dynamic links to the plurality of base stations. The user terminal receives the base station communication portions from the plurality of bases stations and reassembles the communication portions into the base station communication signals.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 13, 2002
    Applicant: HUGHES ELECTRONICS CORPORATION
    Inventors: Donald C. D. Chang, Wah L. Lim, Ming U. Chang
  • Publication number: 20020073437
    Abstract: A television broadcasting system comprises a communication infrastructure and a gateway station communication a television signal to the communication infrastructure. A user terminal establishes a plurality of multiple dynamic links corresponding respectively to the communication infrastructure. The gateway station generates a plurality of datagrams from the television signal and transmits the multiple datagrams through the multiple dynamic links. The user terminal receives the plurality of datagrams from the infrastructure and reassembles the datagrams into the television signal.
    Type: Application
    Filed: September 28, 2001
    Publication date: June 13, 2002
    Applicant: HUGHES ELECTRONICS CORPORATION
    Inventors: Donald C.D. Chang, Wah L. Lim, Ming U. Chang, Grant J. Beatson
  • Patent number: 6337980
    Abstract: A novel mobile satellite communications technique for hand-held terminals includes a satellite system having a plurality of individual satellites all in communication with a ground telecommunications hub. A signal processed by the ground telecommunications hub is radiated through multiple paths to a plurality of the individual satellites in the satellite constellation simultaneously. The radiated signal is then re-radiated by the plurality of individual satellites to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual satellites simultaneously such that the same frequency spectrum may be re-used by another mobile user.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: January 8, 2002
    Assignee: Hughes Electronics Corporation
    Inventors: Donald C. D. Chang, John I. Novak, III, Kar Yung, Frank A. Hagen, Ming U. Chang, William Mayfield
  • Patent number: 6295440
    Abstract: A novel mobile satellite communications technique for hand-held terminals includes a satellite system having a plurality of individual satellites all in communication with a ground telecommunications hub. A signal processed by the ground telecommunications hub is radiated through multiple paths to a plurality of the individual satellites in the satellite constellation simultaneously. The radiated signal is then re-radiated by the plurality of individual satellites to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual satellites simultaneously such that the same frequency spectrum may be re-used by another mobile user.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 25, 2001
    Assignee: Hughes Electronics Corporation
    Inventors: Donald C. D. Chang, John I. Novak, III, Kar Yung, Frank A. Hagen, Ming U. Chang, William Mayfield
  • Publication number: 20010000167
    Abstract: A novel mobile satellite communications technique for hand-held terminals includes a satellite system having a plurality of individual satellites all in communication with a ground telecommunications hub. A signal processed by the ground telecommunications hub is radiated through multiple paths to a plurality of the individual satellites in the satellite constellation simultaneously. The radiated signal is then re-radiated by the plurality of individual satellites to a mobile satellite terminal that receives the re-radiated signal from the plurality of individual satellites simultaneously such that the same frequency spectrum may be re-used by another mobile user.
    Type: Application
    Filed: November 30, 2000
    Publication date: April 5, 2001
    Applicant: Hughes Electronics Corporation
    Inventors: Donald C.D. Chang, John I. Novak, Kar Yung, Frank A. Hagen, Ming U. Chang, William Mayfield