Patents by Inventor Ole Skrydstrup

Ole Skrydstrup 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).

  • Patent number: 4864388
    Abstract: A chroma keyer color discriminator wherein orthogonal color difference signals B-Y and R-Y are rotated through an angle .phi. corresponding to a desired chroma keying signal where R and B are red and blue signals and Y is the luminance signal where Y=0.3R+0.59G+0.11B. The rotated signals (R-Y)' and (B-Y)' are processed to develop B'-G' and B'-R' signals to enhance the selectivity of the discriminator. Difference signals other than B-Y, R-Y, B'-G', and B'-R' may also be employed.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: September 5, 1989
    Inventor: Ole Skrydstrup
  • Patent number: 4028727
    Abstract: This invention relates to a mix/effects switch arrangement and a mix/effects switching system including the switch arrangement. The mix/effects switch arrangement includes five switches each of which has two input terminals, an output terminal and a control terminal. One of the switches is the output switch, and a first and second one of the remaining switches are serially arranged to constitute an input to one of the input terminals of the output switch. The remaining two switches are serially arranged in parallel to constitute the input to the other input terminal of the output switch. At least the output switch constitutes a soft switch, and, preferably, the two input switches also are soft switches. In the switching system, a source of first background video signal is applied to one input terminal of an input switch, and a source of second background video signal is applied to one input of the other input switch.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: June 7, 1977
    Assignee: Central Dynamics Ltd.
    Inventor: Ole Skrydstrup