Patents by Inventor Johnathan D. Devine

Johnathan D. Devine 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 apparatus for coding motion pictures
    Patent number: 5121191
    Abstract: A method and apparatus for compressing motion pictures is disclosed. The frames of the motion picture are divided into adjacent groups. Each group is treated as a three-dimensional image. The three-dimensional image is then filtered via a three-dimensional FIR filter to generate three-dimensional component images that are more efficiently quantized. The degree of quantization of each component image is determined in part by the spatial frequencies represented by the component image in question. For motion pictures derrived from interlaced scanning devices, the quantization of specific component images is altered to prevent artifacts.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: June 9, 1992
    Assignee: Aware, Inc.
    Inventors: Philippe M. Cassereau, Johnathan D. Devine, John C. Huffman, William R. Zettler, Jr.