Patents by Inventor Tetsuro Tokuyama

Tetsuro Tokuyama 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).

  • Publication number: 20210289182
    Abstract: A method of controlling a projector configured to perform a scaling process on an input image to thereby project a projection image corresponding to the input image on a screen includes the steps of correcting a geometric configuration of the projection image with a correction amount, calculating, from the correction amount, a projection surface of the projection image corrected, and changing the scaling process so that an aspect ratio of the input image is reproduced in the projection surface.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tetsuro TOKUYAMA
  • Publication number: 20210099680
    Abstract: A method for controlling a projector controls, via a control circuit, a projector having an input device accepting a startup operation giving an instruction to start up and a stop operation giving an instruction to stop. The method includes: starting startup processing an response to the startup operation and subsequently shifting to a preparation state to preparing for a normal state; setting a task of stop processing in response to the stop operation in the preparation state; and executing the task in response to finishing of the preparation state.
    Type: Application
    Filed: September 25, 2020
    Publication date: April 1, 2021
    Inventor: Tetsuro TOKUYAMA
  • Patent number: 7233707
    Abstract: A projector includes a projection section which projects an all-white image and an all-black image onto a screen, a sensor which generates first sensing information by sensing the all-white image and generates second sensing information by sensing the all-black image, a differential image generation section which generates a differential image based on the first and second sensing information, an external light effect removal section, and a projection target area detection section which generates projection target area information on the position of a projection target area corresponding to the screen in the sensing area of the sensor based on the differential image from which the external light effect is removed.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: June 19, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Matsuda, Tetsuro Tokuyama
  • Patent number: 7093940
    Abstract: An exemplary aspect of the invention can provide a method for easily adjusting the distortion of a projected image. In adjusting the amount of distortion correction, values of the amount of distortion correction for a desired outline form to be formed based on desired positions are calculated after the desired positions can be specified. Then whether all the calculated values of the amount of distortion correction are within a predetermined range where an original image is transformable into a distortion correction image can be judged. If all the calculated values of the amount of distortion correction are within the predetermined range, the calculated values of the amount of distortion correction can be set in an image distortion correction part.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: August 22, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Takehiro Kubo, Tetsuro Tokuyama
  • Publication number: 20050265713
    Abstract: A projector includes a projection section which projects an all-white image and an all-black image onto a screen, a sensor which generates first sensing information by sensing the all-white image and generates second sensing information by sensing the all-black image, a differential image generation section which generates a differential image based on the first and second sensing information, an external light effect removal section, and a projection target area detection section which generates projection target area information on the position of a projection target area corresponding to the screen in the sensing area of the sensor based on the differential image from which the external light effect is removed.
    Type: Application
    Filed: May 26, 2005
    Publication date: December 1, 2005
    Applicant: Seiko Epson Corporation
    Inventors: Hideki Matsuda, Tetsuro Tokuyama
  • Publication number: 20050024597
    Abstract: An exemplary aspect of the invention can provide a method for easily adjusting the distortion of a projected image. In adjusting the amount of distortion correction, values of the amount of distortion correction for a desired outline form to be formed based on desired positions are calculated after the desired positions can be specified. Then whether all the calculated values of the amount of distortion correction are within a predetermined range where an original image is transformable into a distortion correction image can be judged. If all the calculated values of the amount of distortion correction are within the predetermined range, the calculated values of the amount of distortion correction can be set in an image distortion correction part.
    Type: Application
    Filed: June 16, 2004
    Publication date: February 3, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takehiro Kubo, Tetsuro Tokuyama