Patents by Inventor Hakjae Park

Hakjae Park 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).

  • Hibrid video signal encoder having a block rearrangement capability for better compressibility
    Patent number: 5475432
    Abstract: A hybrid coder, for performing interframe video encoding which combines the advantages of both the interfield and the interframe codings for low bit-rate video transmission; the pel elements of a differential block from a subtracter is rearranged; the complexity of a present input block and the horizontal motion vector thereof are estimated; and, then, one of the differential block and the rearranged block is subjected to a two-dimensional transform according to the complexity and the horizontal motion vector.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: December 12, 1995
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Hakjae Park
  • Low-bit rate interframe video encoder with adaptive transformation block selection
    Patent number: 5351086
    Abstract: An interframe video encoder of the type known as a hybrid coder, combines the advantages of both the interfield and the interframe codings for low bit-rate video transmission. The pel elements of differential block from subtracter are rearranged and the correlation of the rearranged block is estimated. The correlation of the differential block is also provided. And then, one of the differential block and the rearranged block is subjected to two-dimensional transform according to the comparsion of the correlations.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: September 27, 1994
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Hakjae Park