Patents by Inventor Hiroyoshi Otsuka

Hiroyoshi Otsuka 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).

  • Image processor
    Patent number: 4586089
    Abstract: An image processor for reproducing a continuous tone image such as a photograph in a black-and-white binary dot image (halftone image) has a linear correction section for converting a sampled digital image signal in a predetermined manner controlled by black and white densities of an original, thereby performing linear conversion between the continuous tone image and the halftone image. The image processor also has another correction section for performing profile emphasis to obtain a clear halftone image.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: April 29, 1986
    Assignees: Matsushita Electric Industrial Co., Ltd., Matsushita Graphic Communication Systems, Inc.
    Inventors: Katsuo Nakazato, Kunio Sannomiya, Hidehiko Kawakami, Hiroyoshi Tsuchiya, Hiroyoshi Otsuka, Hideo Uchida