Patents by Inventor Tatsuhiro Hasu

Tatsuhiro Hasu 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: 20240013738
    Abstract: A display system includes a circuit device and a first light source driver to an n-th light source driver. The circuit device performs local dimming control on a display device including a display panel and a backlight. The first light source driver to the n-th light source driver drive the backlight based on dimming information of the local dimming control. An i-th light source driver PWM-drives an i-th light source element group among the first light source element group to the n-th light source element group provided in a target area based on dimming information for the target area. The target area is an area to be driven by the first light source driver to the n-th light source driver among a plurality of areas of the backlight in the local dimming control.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Inventors: Tatsuhiro HASU, Yasutoshi AKIBA
  • Patent number: 9894334
    Abstract: An image processing circuit includes a front stage signal processing circuit that performs processing of input data and outputs the data and a rear stage signal processing circuit that performs processing which is to be performed on the data obtained after processing of the input data performed by the front stage signal processing circuit and outputs the data. The image processing circuit is configured to be switchable to one state of a first state that performs processing of the input data using the front stage signal processing circuit, subsequently performs processing of the data using the rear stage signal processing circuit, and outputs the data, a second state that performs processing of the input data using the front stage signal processing circuit and outputs the data, and a third state that performs processing of the input data using the rear stage signal processing circuit and outputs the data.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 13, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiro Hasu, Takekuni Yamamoto
  • Patent number: 9785267
    Abstract: A display apparatus includes a display section that displays a displayed image on a display surface based on an original image, an imaging section that captures the displayed image displayed on the display surface by the display section, a generation section that generates a difference image representing a difference between a captured image produced by the imaging section that captures the displayed image and the original image, and an instruction section that instructs the display apparatus to take a predetermined action based on a temporal change in the difference image generated by the generation section.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: October 10, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuhiro Hasu
  • Publication number: 20160269699
    Abstract: An image processing circuit includes a front stage signal processing circuit that performs processing of input data and outputs the data and a rear stage signal processing circuit that performs processing which is to be performed on the data obtained after processing of the input data performed by the front stage signal processing circuit and outputs the data. The image processing circuit is configured to be switchable to one state of a first state that performs processing of the input data using the front stage signal processing circuit, subsequently performs processing of the data using the rear stage signal processing circuit, and outputs the data, a second state that performs processing of the input data using the front stage signal processing circuit and outputs the data, and a third state that performs processing of the input data using the rear stage signal processing circuit and outputs the data.
    Type: Application
    Filed: November 6, 2014
    Publication date: September 15, 2016
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiro HASU, Takekuni YAMAMOTO
  • Patent number: 9076233
    Abstract: An image processing device includes a compression circuit adapted to perform compression of image data after sorting the pixels in an arrangement included in a plurality of lines in image data into a plurality of lines corresponding respectively to color components, a memory adapted to store the image data thus compressed, and an expansion circuit adapted to expand the image data thus compressed to restore the arrangement of the pixels.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: July 7, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiro Hasu, Masaki Ishikawa, Masanobu Kobayashi
  • Publication number: 20150130717
    Abstract: A display apparatus includes a display section that displays a displayed image on a display surface based on an original image, an imaging section that captures the displayed image displayed on the display surface by the display section, a generation section that generates a difference image representing a difference between a captured image produced by the imaging section that captures the displayed image and the original image, and an instruction section that instructs the display apparatus to take a predetermined action based on a temporal change in the difference image generated by the generation section.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 14, 2015
    Inventor: Tatsuhiro Hasu