Patents by Inventor Hien D. Ma

Hien D. Ma 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).

  • Method and apparatus for providing prepaid music card for deciphering recorded broadcast audio signals
    Patent number: 8054968
    Abstract: An apparatus and method are provided for deciphering recorded digital audio signals and using a smart card to pay for deciphering. Encrypted digital audio signals are recorded onto a recording medium, such as a compact disc or the like. When the user desires to listen to the recording, the encrypted recording is inserted into a player/recorder and a prepaid smart card is inserted into a smart card reader connected to the player/recorder. The smart card reader deducts a predetermined value from the card before allowing the player/recorder to decipher the encrypted recording, and record the deciphered audio onto a recording medium for playback.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: November 8, 2011
    Assignee: Sirius XM Radio Inc.
    Inventors: Hien D. Ma, Argy Petros, Stelios Patsiokas, Paul D. Marko, Kenneth Lerner, Frank Falcone