Patents by Inventor Satomi Yoshibe

Satomi Yoshibe 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).

  • High density optical disk and a method of high density recording
    Patent number: 6829212
    Abstract: A high density disk and a method of manufacturing the high density disk. The high density is accomplished by narrowing the pitch and increasing the groove depth so as not to sacrifice any desirable features of the high density optical disk medium.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: December 7, 2004
    Assignee: Nikon Corporation
    Inventors: Seiji Morita, Satomi Yoshibe
  • Optical disk having lands and grooves with a reduced track pitch
    Patent number: 6822938
    Abstract: An optical disk has grooves and lands located on the disk. A predetermined distance between the grooves and lands is defined as a predetermined track pitch. The predetermined track pitch is defined in term of a laser wavelength used during an operation. The grooves have a depth “d” in relation to the lands. The depth is related to a parameter variable “a” and a refraction index “n” of a substrate.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: November 23, 2004
    Assignee: Research Investment Network, Inc.
    Inventors: Hiroyuki Matsumoto, Seiji Morita, Masatoshi Hayashi, Satomi Yoshibe
  • High density optical disk and a method of high density recording
    Publication number: 20030179691
    Abstract: The current invention is directed to a high density disk and a method of manufacturing the high density disk. The high density is accomplished by narrowing the pitch and increasing the groove depth so as not to sacrifice any desirable features of the high density optical disk medium.
    Type: Application
    Filed: March 24, 2003
    Publication date: September 25, 2003
    Inventors: Hiroyuki Matsumoto, Seiji Morita, Masatoshi Hayashi, Satomi Yoshibe
  • High density optical disk and a method of high density recording
    Publication number: 20020141328
    Abstract: The current invention is directed to a high density disk and a method of manufacturing the high density disk. The high density is accomplished by narrowing the pitch and increasing the groove depth so as not to sacrifice any desirable features of the high density optical disk medium.
    Type: Application
    Filed: March 25, 2002
    Publication date: October 3, 2002
    Inventors: Hiroyuki Matsumoto, Seiji Morita, Masatoshi Hayashi, Satomi Yoshibe
  • Method and a system for adjusting optical recording device involving an optical recording medium of non-uniform heat characteristics
    Patent number: 5793723
    Abstract: The discrepancies in the input-output operations associated with utilizing predetermined optical disk portions with various heat capacities to store data are substantially reduced by providing additional and separate information to compensate the non-uniform characteristics. The additional data may be stored in an external memory or on the disk itself.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: August 11, 1998
    Assignee: Nikon Corporation
    Inventors: Toshihiro Okuyama, Haruhisa Iida, Satomi Yoshibe