Patents by Inventor John W. Pan

John W. Pan 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 device for differentiating between data and voice digital signals
    Patent number: 6216105
    Abstract: A method and device for determining whether a stream of digital words, each comprising a plurality of binary digits, represents data signals, or represents digitized voice is disclosed. The method comprises the step of testing the steadiness or randomness of an individual bit within a predetermined sequence of each said digital words. If the individual bit is tested to be random, the stream of digital words represents data signals; and if the individual bit is test to be steady, the stream of digital words represents voice signals. The device comprises a shift registers to store the predetermined sequence of the digital words, a counter to control the shift register, and a gate arrays to determine steadiness or randomness of the individual bit within the predetermined sequence of each said digital words.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: April 10, 2001
    Assignee: Loop Telecommunication International, Inc.
    Inventor: John W. Pan