Patents by Inventor Hirofumi Hisikura

Hirofumi Hisikura 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 reproducing a video signal subject to pre-emphasis
    Patent number: 5526136
    Abstract: An image is stably reproduced in a special reproduction mode of still, frame advance or slow motion mode without residual image and/or blur. A video signal reproducing apparatus operates to alternately repeat the steps of interrupting a de-emphasizing process at a time at which the de-emphasis process for one video image signal period is completed, holding a content of a frame memory constituting the de-emphasis circuit without refreshing the content and performing a de-emphasis process based the content of the memory during a subsequent video image signal period.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: June 11, 1996
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hirofumi Hisikura, Ryo Hirayama, Kaoru Kobayashi