Patents by Inventor Ryohichi Yonezawa

Ryohichi Yonezawa 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 Projecting Method, Projector, and Computer Program Product
    Publication number: 20080284987
    Abstract: The positions of the four corners of the projection area and the positions of the four corners of the projection image are detected on an image captured by a camera unit, and the positions of the four corners of the projection area with respect to the positions of the four corners of the projection image is transformed to the positions on a panel coordinate system set in a spatial optical modulating device (panel). A first minimum target frame including the four corners of the projection area transformed on the panel coordinate system is set on the panel coordinate system and a second target frame in consideration of an aspect ratio of the projection image is set on the panel coordinate system based on the position of the first target frame on the panel coordinate system.
    Type: Application
    Filed: October 18, 2005
    Publication date: November 20, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Ryohichi Yonezawa
  • Projection system that adjusts for keystoning
    Patent number: 7237907
    Abstract: A system for adjusting keystoning in a projector may include sensing using an imaging device at least two boundaries defining a projection screen and determining a transformation to adjust the keystoning of an image projected from the projector. The image may be modified from the projector in accordance with the transformation and projecting the modified image from the projector, wherein the imaging device and the projector are maintained in a fixed relationship with respect to each other.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: July 3, 2007
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Projection system that adjusts for keystoning
    Publication number: 20070097328
    Abstract: A system for adjusting keystoning in a projector may include sensing using an imaging device at least two boundaries defining a projection screen and determining a transformation to adjust the keystoning of an image projected from the projector. The image may be modified from the projector in accordance with the transformation and projecting the modified image from the projector, wherein the imaging device and the projector are maintained in a fixed relationship with respect to each other.
    Type: Application
    Filed: December 19, 2006
    Publication date: May 3, 2007
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Projection system that adjusts for keystoning
    Patent number: 7175285
    Abstract: A system for adjusting keystoning in a projector may include sensing using an imaging device at least two boundaries defining a projection screen and determining a transformation to adjust the keystoning of an image projected from the projector. The image may be modified from the projector in accordance with the transformation and projecting the modified image from the projector, wherein the imaging device and the projector are maintained in a fixed relationship with respect to each other.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: February 13, 2007
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Projection system with corrective image transformation
    Patent number: 7125122
    Abstract: An image projection system that corrects an image to be projected onto a projection surface by sensing at least a portion of that surface, and based upon the sensed portion, determining and applying a corrective transformation to the image, after which the corrected image is projected onto the projection surface.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: October 24, 2006
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Projection system
    Publication number: 20050168705
    Abstract: An image projector that modifies projected images.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 4, 2005
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
  • Projection system
    Publication number: 20050024606
    Abstract: An image projector that modifies projected images.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 3, 2005
    Inventors: Baoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa