Sharp and Memory-Tech Holdings Assigned Patent

Sharp Kabushiki Kaisha, Sakai, Japan, and Memory-Tech Holdings Inc., Tokyo, Japan, has been assigned a patent (10,043,545) developed by Yamada, Hirohisa, Naka, Takayuki, Yamamoto, Masaki, Adachi, Yoshihisa, Tajima, Hideharu, Sakai, Japan, and Konishi, Masahito, Chikusei, Japan, for an “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 May 31, 2017 (15/609,346).