Patents by Inventor Djunedhi Listyono

Djunedhi Listyono 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).

  • Audio visual karaoke system using audio cassette
    Patent number: 5609487
    Abstract: An audio visual karaoke system using a karaoke audio cassette to which high frequency signals have been added containing specific data information. In the audio player, these high frequency signals are separated from the audio signals by a high pass filter ("HPF"). Using a data converter, the high frequency signals are converted into data information. Subsequently, this data information is processed by a microprocessor and a display controller to generate lyrics or other information, which are displayed on a display device.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: March 11, 1997
    Assignee: P. T. Hartono Istana Electronics
    Inventors: Dwidjaja Setlabudi, Djunedhi Listyono, Ketut Wihardika, Markus S. B. Sutikno, Ariffin Setawidjaja, Budianto, Fransiscus X. S. Wijaya