Patents by Inventor Judith Wang

Judith Wang 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).

  • Methods and apparatuses for determining scrambling codes for signal transmission
    Patent number: 7961880
    Abstract: Methods and apparatuses for determining scrambling codes for minimizing co-channel interference in a communication system. A method in accordance with the present invention comprises defining at least one initial default sequence, generating a scrambling code, scrambling a signal using the generated scrambling code, comparing the scrambled signal with all other scrambled signals meeting a specified criterion, and saving the scrambling code word if the comparison determines that the signal scrambled with the scrambling code also meets the specified criterion. The scrambling codes can be compared with each other for cross-correlation purposes to determine whether they meet the specified criterion based on laboratory testing.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: June 14, 2011
    Assignee: The DIRECTV Group, Inc.
    Inventors: Judith Wang, Guangcai Zhou, Joseph Santoru, Ernest C. Chen, Shamik Maitra, Dennis Lai, Tung-Sheng Lin
  • Methods and apparatuses for determining scrambling codes for signal transmission
    Publication number: 20070074242
    Abstract: Methods and apparatuses for determining scrambling codes for minimizing co-channel interference in a communication system. A method in accordance with the present invention comprises defining at least one initial default sequence, generating a scrambling code, scrambling a signal using the generated scrambling code, comparing the scrambled signal with all other scrambled signals meeting a specified criterion, and saving the scrambling code word if the comparison determines that the signal scrambled with the scrambling code also meets the specified criterion. The scrambling codes can be compared with each other for cross-correlation purposes to determine whether they meet the specified criterion based on laboratory testing.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 29, 2007
    Inventors: Judith Wang, Guangcai Zhou, Joseph Santoru, Ernest Chen, Shamik Maitra, Dennis Lai, Tung-Sheng Lin
  • Two-dimensional signal detector with dynamic timing phase compensation
    Patent number: 6760574
    Abstract: A method for detecting an input signal at a transceiver of a communication system is disclosed, and includes compensating for timing misalignment between when the receipt of the input signal was indicated and when the input signal actually arrived. A signal detector for detecting an input signal and adapted to compensate for timing misalignment is also disclosed.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: July 6, 2004
    Assignee: Centillium Communications, Inc.
    Inventors: Cheng-Youn Lu, Judith Wang