Patents by Inventor David Pollen

David Pollen 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).

  • Image coding apparatus and method utilizing separable transformations
    Patent number: 5148498
    Abstract: An image coding apparatus and method are disclosed. The method and apparatus are applicable to coding any array of arbitrary dimension. The apparatus utilizes FIR filters which generate three or more sets of coefficients from linear arrays generated from the array being coded. Each set of coefficients represents spatial frequency information of different frequencies. The filters utilize coefficient sets which are preferrably orthogonal.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: September 15, 1992
    Assignee: Aware, Inc.
    Inventors: Howard L. Resnikoff, David Pollen, David C. P. Linden, Wayne M. Lawton
  • Method and apparatus for coding an image
    Patent number: 5101446
    Abstract: A method for coding an image or other two-dimensional data array to provide a sequence of images having differing spatial frequency content is disclosed. The method generates the output images by taking weighted sums of the pixels in the input image. The weights are sets of two-dimensional irreducible scaling and wavelet coefficients.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: March 31, 1992
    Assignee: Aware, Inc.
    Inventors: Howard L. Resnikoff, David Pollen, David C. P. Linden
  • Novel spread spectrum codec apparatus and method
    Patent number: 5081645
    Abstract: A system comprising apparatuses and methods for encoding and decoding spread spectrum signals is disclosed. Signals are encoded by modulating numerical sequences selected from an orthonormal basis of numerical sequences to provide channel coding. The modulated sequences are then combined to form an encoded signal. Because of the orthonormal character of the sequences, the encoded signal may be easily decoded using a matched filter. A method for generating long sequences from the product of shorter sequences is also disclosed.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: January 14, 1992
    Assignee: Aware, Inc.
    Inventors: Howard L. Resnikoff, David Pollen, Wayne M. Lawton, Ramesh A. Gopinath