Patents by Inventor Satoshi Tan

Satoshi Tan 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).

  • Recording and reproducing apparatus with varying amounts of data in different tracks
    Patent number: 5526328
    Abstract: A disk-shaped recording medium includes a transparent substrate, and an optical recording layer and a magnetic recording layer formed at one side of the transparent substrate. An optical head applies light to the optical recording layer from a light source via the transparent substrate, and focuses the light on the optical recording layer and reproduces information from the optical recording layer. A magnetic head records information on the magnetic recording layer or reproduces information from the magnetic recording layer. An optical head moving device serves to move the optical head by a movement amount so as to focus the light on an optical track on the optical recording layer which has specified address information. A magnetic head moving device serves to move the magnetic head to a specified magnetic track on the magnetic recording layer by referring to the movement amount of the optical head.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: June 11, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mitsuaki Oshima, Ryosuke Shimizu, Toshikazu Koudo, Tsukasa Yoshiura, Takumi Matsuura, Michiro Tanaka, Satoshi Tan