Patents by Inventor Tohru Shinagawa

Tohru Shinagawa 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).

  • Patent number: 4965802
    Abstract: An information recording medium includes a memory section for storing therein information inputted from an external apparatus, information generated internally on the basis of the inputted information, or converted information. The medium further includes a computing and processing section for performing control to write the above described information into the memory section, and a program storage section for storing therein control programs such as control program and write control program required for the computing and processing section to transfer/receive information to/from the external apparatus. A memory arrangement exists for the information recording medium wherein at least one of the plural memory sections and the program storage section comprise a fixed item information recording area. This area contains predetermined recording contents and information pieces with an error detection information piece and added per information item being stored into the fixed item information storage area.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: October 23, 1990
    Assignee: Hitachi Maxell, Ltd.
    Inventor: Tohru Shinagawa