Patents by Inventor Vladimir Babkin

Vladimir Babkin 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 for image compression implementing fast two-dimensional discrete cosine transform
    Patent number: 5642438
    Abstract: A method and apparatus for the realization of two-dimensional discrete cosine transform (DCT) for an 8*8 image fragment with three levels of approximation of DCT coefficients. A first embodiment uses two multiplications for a pixel. A second embodiment does not use multiplications. The accuracy of approximation of DCT coefficients in the second embodiment is coordinated with distortion defined by a given quantization matrix. The Discrete Algebraic Transform (DAT) is presented. The DAT is a good approximation of the DCT and can be used in any combination with DCT.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: June 24, 1997
    Assignees: Alaris, Inc., G.T. Technology, Inc.
    Inventor: Vladimir Babkin
  • Method and apparatus for the realization of two-dimensional discrete cosine transform for an 8*8 image fragment
    Patent number: 5539836
    Abstract: A method and apparatus for the realization of two-dimensional discrete cosine transform (DCT) for an 8*8 image fragment with three levels of approximation of DCT coefficients. A first embodiment uses two multiplications for a pixel. A second embodiment does not use multiplications. The accuracy of approximation of DCT coefficients in the second embodiment is coordinated with distortion defined by a given quantization matrix. The Discrete Algebraic Transform (DAT) is presented. The DAT is a good approximation of the DCT and can be used in any combination with DCT.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: July 23, 1996
    Assignees: Alaris Inc., GT Technology
    Inventor: Vladimir Babkin