Patents by Inventor Kaarlo Juhani Hamalainen

Kaarlo Juhani Hamalainen 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 converting a digital interlaced video signal from a film scanner to a digital progressive video signal
    Patent number: 6069664
    Abstract: The present invention is embodied in an apparatus and method for converting a progressive video signal to an interlaced video signal from which the progressive video signal may be recovered. The invention is further embodied in an apparatus and method for converting such an interlaced video signal to a progressive video signal. A progressive-to-interlaced video converter includes a progressive video preprocessor and a converter. The progressive video preprocessor replaces at least one scan line in a video frame by its preceding or succeeding scan line. Alternatively, the preprocessor may assign a predetermined value to one or multiple scan lines at appropriate position(s) in a frame. In either scenario, each frame will carry at least one redundant scan line. The frame modification information will be encoded to an ancillary data section of a digital video stream.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: May 30, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Daniel Qiang Zhu, Kaarlo Juhani Hamalainen, Thomas James Leacock, Kevin John Stec