Patents by Inventor Fumihisa Tago

Fumihisa Tago 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).

  • Disk recording apparatus and disk recording method
    Patent number: 7151724
    Abstract: A disk recording apparatus for recording data to a disk includes: a reading and writing element for emitting a read beam onto the disk to read out recorded data therefrom while emitting a plurality of write beams simultaneously onto the disk to record data thereto in parallel; and a controlling element for controlling where to emit on the disk the plurality of write beams in accordance with the data read out by the reading and writing element.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: December 19, 2006
    Assignee: Sony Corporation
    Inventors: Keigo Fumoto, Yuji Nozawa, Mamoru Akita, Fumihisa Tago
  • Disk recording apparatus and disk recording method
    Publication number: 20030043722
    Abstract: A disk recording apparatus for recording data to a disk is disclosed. The apparatus includes: a reading and writing element for emitting a read beam onto the disk to read out recorded data therefrom while emitting a plurality of write beams simultaneously onto the disk to record data thereto in parallel; and a controlling element for controlling where to emit on the disk the plurality of write beams in accordance with the data read out by the reading and writing element.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 6, 2003
    Inventors: Keigo Fumoto, Yuji Nozawa, Mamoru Akita, Fumihisa Tago