Patents by Inventor Clarence J. Hau

Clarence J. Hau 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).

  • Interpolation filter selection circuit for sample rate conversion using phase quantization
    Patent number: 5613084
    Abstract: A filter selector generates a filter address value to select one of a number of frequency characteristics of a filter to resample a first data signal from a first segment of data in order to generate second sampled data signal in a second segment of data. The filter selector includes an adder which adds a resampling factor to a previous address value to generate a current address value if the previous address value is less than a comparator value and which subtracts the comparator value from the previous address value to generate the current address value if the previous address value is greater than or equal to the comparator value. The current address value is shifted by n bits, where n is an integer, to generate the filter address value.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: March 18, 1997
    Assignee: Panasonic Technologies, Inc.
    Inventors: Clarence J. Hau, Jerome D. Shields