Patents by Inventor Osamu Hira

Osamu Hira 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: 5394383
    Abstract: The reproduction finish of an optical disc reproducing apparatus is controlled. The optical disc has a program area, in which information is recorded one after another in a radial direction from an inner circumference toward an outer circumference. The information includes recording position information arranged at a predetermined interval in the radial direction. The controlling method includes the steps of: reading the recording position information one after another; continually comparing a presently read recording position information with a previously read recording position information; moving a reading position toward the outer circumference; distinguishing whether reading of the information at the reading position after moving is normal or not; and moving the reading position toward the inner circumference, and finishing the information reproduction.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: February 28, 1995
    Assignee: Pioneer Electronic Corporation
    Inventor: Osamu Hira
  • Patent number: 5392264
    Abstract: An information reproducing apparatus, to which a recording medium having record information and table of contents information is mounted, controls a reproduction operation on the basis of the table of contents information. The apparatus includes: an operation input device by which various command data are inputted; a first memory for temporarily storing reproduction control information including the table of contents information; a reproduction device for reproducing the recording medium according to the inputted command data; a second memory of non-volatile type for storing the reproduction control information in correspondence with each recording medium; and a memory control device for storing into the second memory the reproduction control information stored in the first memory the at least one of the inputted command data and an operation condition of the reproduction device indicate a continuous stop condition of the reproduction operation.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: February 21, 1995
    Assignee: Pioneer Electronic Corporation
    Inventor: Osamu Hira
  • Patent number: 5381392
    Abstract: An optical disc reproducing apparatus reproduces an optical disc having an information recording surface on which record information and control information are recorded. The apparatus is provided with: a device for rotationally driving the optical disc; a reading device for forming a light spot on the information recording surface, and receiving a reflected light to generate a read signal of the reflected light; a device for reproducing the record information and the control information from the read signal; a device for detecting whether a focus of the light spot is normal or not according to the read signal; a device for detecting whether a rotation number of the optical disc is normal or not according to the read signal; and a device for discriminating the optical disc on the basis of conditions of the detected focus and the detected rotation number.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: January 10, 1995
    Assignee: Pioneer Electronic Corporation
    Inventor: Osamu Hira
  • Patent number: 5189656
    Abstract: A compact disk player has a magazine containing a plurality of disks. Identification data, about a last disk which has been played before the stop of the playing of the disk, is detected. A memory is provided for storing the detected identification data. The last disk, data of which is stored in the memory, is played at the next time by operating a stop key.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: February 23, 1993
    Assignee: Pioneer Electronic Corporation
    Inventors: Naoki Masaki, Osamu Hira, Naoki Shimada