Patents by Inventor Hisato Miyachi

Hisato Miyachi 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).

  • Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program
    Patent number: 8126202
    Abstract: A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: February 28, 2012
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takao Nakamura, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Atushi Katayama, Hisato Miyachi
  • DIGITAL WATERMARK PADDING METHOD, DIGITAL WATERMARK PADDING DEVICE, DIGITAL WATERMARK DETECTING METHOD, DIGITAL WATERMARK DETECTING DEVICE, AND PROGRAM
    Publication number: 20110228972
    Abstract: A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.
    Type: Application
    Filed: May 11, 2011
    Publication date: September 22, 2011
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takao NAKAMURA, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Atushi Katayama, Hisato Miyachi
  • Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and program
    Patent number: 7970164
    Abstract: A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: June 28, 2011
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takao Nakamura, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Atushi Katayama, Hisato Miyachi
  • Digital Watermark Padding Method, Digital Watermark Padding Device, Digital Watermark Detecting Method, Digital Watermark Detecting Device, And Program
    Publication number: 20080089552
    Abstract: A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.
    Type: Application
    Filed: July 31, 2006
    Publication date: April 17, 2008
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takao Nakamura, Susumu Yamamoto, Ryo Kitahara, Takashi Miyatake, Atushi Katayama, Hisato Miyachi