Patents by Inventor Masayoshi Katono

Masayoshi Katono 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).

  • Method of uniforming physical random number and physical number generation device
    Patent number: 7461111
    Abstract: A method of uniforming physical random numbers while concurrently maintaining a random number generating rate and ensuring security. The method sequentially inputs a plurality of physical random numbers to a shift register to hold them there, and shifts them every time a reference pulse signal rises. Physical random numbers held in the shift register are randomly selected and output by a selector based on part of them. Accordingly, physical random numbers input to the shift register are uniformed and then output even thought they have a deviation, thereby eliminating the chance of not outputting random numbers or letting others recognize the deviation of random numbers.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 2, 2008
    Assignee: FDK Corporation
    Inventors: Hiroyasu Yamamoto, Ananda Vithanage, Takakuni Shimizu, Kaoru Fujita, Hatsumi Nakano, Takaaki Shiga, Ryuji Soga, Masayoshi Katono, Toshiyuki Watanabe, Misako Koibuchi
  • Method of uniforming physical random number and physical number generation device
    Publication number: 20060040731
    Abstract: A method of uniforming physical random numbers, capable of maintaining a random number generating rate and ensuring security concurrently. The method sequentially inputs a plurality of physical random numbers to a shift register to hold them there, and shifts them every time a reference pulse signal rises. Physical random numbers held in the shift register are randomly selected and output by a selector based on part of them. Accordingly, physical random numbers input to the shift register are uniformed and then output even thought they have a deviation, thereby eliminating the chance of not outputting random numbers or letting others recognize the deviation of random numbers.
    Type: Application
    Filed: September 25, 2003
    Publication date: February 23, 2006
    Inventors: Hiroyasu Yamamoto, Ananda Vithanage, Takakuni Shimizu, Kaoru Fujita, Hatsumi Nakano, Takaaki Shiga, Ryuji Soga, Masayoshi Katono, Toshiyuki Watanabe, Misako Koibuchi