Patents by Inventor Noboru Mikamo

Noboru Mikamo 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: 5630115
    Abstract: In a method of rewriting a file data recorded on a record medium such as an optical memory card in successive tracks each constituting a minimum unit record, the file data is read out of the optical memory card as old records of an old file, the thus read out respective records of the old file are compared with corresponding records of a new file formed on a main memory disk to detect a revised record, and only the thus detected revised record is recorded on the record medium. On the main memory disk, there is further formed recording position information denoting a position on the record medium at which said revised record has been recorded and the thus formed recording position information is recorded on the record medium together with old and new file names. Only the revised record is recorded on the record medium, so that its data record area can be utilized optimally.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: May 13, 1997
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Noboru Mikamo
  • Patent number: 5392267
    Abstract: In a method of recording and/or reproducing information consisting of directory data and actual data on an optical card having first and second directory data record regions and first and second actual data record regions, the same actual data are recorded in the first and second actual data record regions, the same directory data including position data denoting tracks in the first and second actual data record regions on which the actual data have been recorded are recorded in the first and second directory data record regions. Upon reproduction, at first the directory data recorded in the first directory data record region are read out and if this directory data can be read out correctly, the actual data recorded in the first actual data record region are read out under the control of the position data included in the read-out directory data.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: February 21, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Noboru Mikamo
  • Patent number: 5349577
    Abstract: An optical card having a file data record region in which a number of file data are recorded and a directory record region in which a number of directories for managing the file data are recorded. The directory includes a file name specific to file data and a track address denoting a track on which the relevant file data has been recorded. In order to change a file name, there is prepared a file name changing directory in which an old file name and a new file name are set. When the file name changing directory is processed, a directory having a file name corresponding to the old file name is retrieved and the file name of the thus retrieved directory is changed into the new file name. In this manner, the file name can be changed easily and effectively. Further, when file data is to be erased, there is prepared a file name changing directory having the file name of the relevant file data as the old file name and a special file name as the new file name.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: September 20, 1994
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Noboru Mikamo