Sharp and Memory-Tech Holdings Assigned Patent

Sharp Kabushiki Kaisha, Sakai, Japan, and Memory-Tech Holdings Inc., Tokyo, Japan, has been assigned a patent (9,697,863) developed by Yamada, Hirohisa, Naka, Takayuki, Yamamoto, Masaki, Adachi, Yoshihisa, Tajima, Hideharu, Osaka, Japan, and Konishi, Masahito, Chikusei, Japan, for a “information recording medium and reproduction device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “An optical disk,(100) of the present invention includes, (i) a medium information region, 101, (a) in which type identification information is recorded by recesses and/or protrusions which are formed by a given modulation method and whose lengths are longer than a length of an optical system resolution limit of a playback device and, (b) in which first address information is recorded in a first address data format and, (ii) a data region, 102, (a) in which content data is recorded by recesses and/or protrusions which are formed by the given modulation method and which include a recess and/or a protrusion whose length is shorter than the length of the optical system resolution limit and, b) in which second address information is recorded in a second address data format.“

The patent application was filed on April 8, 2014 (14/917,992).