Patents by Inventor Keiya Miyoshi

Keiya Miyoshi 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).

  • Multiscreen display circuit for displaying video signal sources having different aspect ratios
    Patent number: 5365276
    Abstract: The present invention sequentially selects and outputs one of a plurality of video image sources 1 by an image signal source switching means 2, processes the video images by thinning circuit portions 3 and 4, writes in the video data into an image memory 5 and display the images on an image display device 6. Depending upon the detection output of an aspect ratio detecting circuit portion 12, which detects an aspect ratio of an image display of each of the video image source 1, thinning ratios of the thinning circuits 3 and 4 and a write in control circuit portion 9 for the image memory are switched in order to obtain a multiscreen display circuit which can display video signal sources having different aspect ratios.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: November 15, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyoshi Imai, Yutaka Nio, Ken Sakamoto, Keiya Miyoshi, Mitsuji Okawa, Toyoaki Unemura