Patents by Inventor Syuichi Satake

Syuichi Satake 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).

  • Apparatus and method for authenticating digital signatures and computer-readable recording medium thereof
    Patent number: 7024558
    Abstract: In an apparatus for authenticating a digital signature, a signature generating part encrypts a digital document by using a private key defined by a signer and digest information for checking whether the digital document has been tampered with, and generates a digital signature. A signature synthesizing part creates image information by synthesizing the digital signature and a predetermined mark. And an image embedding part embeds the image information created by said signature synthesizing part into an indicated position in the digital document.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: April 4, 2006
    Assignee: Fujitsu Limited
    Inventor: Syuichi Satake
  • Image data merging system
    Patent number: 6415039
    Abstract: An image data merging system includes a first input unit for inputting original information and temporarily storing the input original information as image information, a second input unit for inputting identification information and temporarily storing the input identification information as image information, and an image merging unit for merging the original information temporarily stored in the first input unit and the identification information temporarily stored in the second input unit with each other in accordance with a predetermined rule.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: July 2, 2002
    Assignee: Fujitsu Limited
    Inventors: Naotake Uraki, Syuichi Satake
  • IMAGE DATA MERGING SYSTEM
    Publication number: 20010012376
    Abstract: An image data merging system includes a fist input unit for inputting original information and temporarily storing the input original information as image information, a second input unit for inputting identification information and temporarily storing the input identification information as image information, and an image merging unit for merging the original information temporarily stored in the first input unit and the identification information temporarily stored in the second input unit with each other in accordance with a predetermined rule.
    Type: Application
    Filed: February 10, 1998
    Publication date: August 9, 2001
    Inventors: NAOTAKE URAKI, SYUICHI SATAKE