Patents by Inventor Shigeru Jojo

Shigeru Jojo 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).

  • Magnetic recording circuit for toll road ticket
    Patent number: 5455408
    Abstract: A circuit for reading a toll road ticket in which a mark for magnetic recording density discrimination formed on a ticket is detected and a magnetic record demodulating circuit is selected in accordance with the result of detection. The circuit is a digital recording circuit and reproducing circuit for a magnetic card utilizing modified frequency modulation. In a toll receiving system of a toll road, coexistence of tickets adopting different magnetic recording densities or recording systems is made possible.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: October 3, 1995
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideo Urata, Naoshi Noguchi, Shigeru Jojo, Riichiro Yamashita, Nobuhide Hirako
  • Magnetic recording method and circuit for toll road ticket
    Patent number: 5274218
    Abstract: A method for reading information from a toll road ticket in which a mark indicating magnetic recording density is formed on a ticket and is detected. A magnetic record demodulating circuit is selected in accordance with the result of detection. Further, a conversion method for increasing a recording capacity of a ticket is provided.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: December 28, 1993
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideo Urata, Naoshi Noguchi, Shigeru Jojo, Riichiro Yamashita, Nobuhide Hirako