Toshiba Assigned Three Patents

Protection of disk drive from external electromagnetic waves
Kabushiki Kaisa Toshiba, Tokyo, Japan, has been assigned a patent (10,468,072) developed by Yamasaki, Nobuyoshi, Kamakura Kanagawa, Japan, and Tsujimura, Toshihiro, Ota Tokyo, Japan, for a “protection of disk drive from external electromagnetic waves.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A disk drive includes a metal base that has a rectangular bottom wall and side walls formed on each side of the rectangular bottom wall, the side walls including a first side wall on a shorter side, a metal cover that is fixed to the metal base with a plurality of metal screws, including two screws disposed at opposite ends of the side wall, a gap being formed between an upper end of the first side wall and the metal cover, a magnetic disk disposed on the metal base, at a position offset from a center of the metal base in a longitudinal direction towards the first side wall, and a head. The first side wall and the metal cover are electrically connected at an intermediate position of the first side wall between said opposite ends of the first side wall.”

The patent application was filed on May 15, 2018 (15/979,525).

Data center dual stage drive with data striping
Kabushiki Kaisa Toshiba, Tokyo, Japan, has been assigned a patent (10,431,257) developed by Ehrlich, Richard M., Saratoga, CA, for a “data center dual stage drive with data striping.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A dual-stage servo system of a disk drive includes a first fine positioning servo system with a first microactuator that independently controls the position of a first read/write head over a first recording surface and a second fine positioning servo system with a second microactuator that independently controls the position of a second read/write head over a second recording surface. The first microactuator accesses a first data stripe while the second fine positioning servo system simultaneously accesses a second data stripe. Data can be transferred to or from the first and second data stripes simultaneously.”

The patent application was filed on October 29, 2018 (16/174,221).

Disk-drive with efficient command-reordering
Kabushiki Kaisa Toshiba, Tokyo, Japan, has been assigned a patent (10,418,053) developed by Ehrlich, Richard M., Saratoga, CA, for a “disk-drive with efficient command-reordering.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A storage device includes a disk, a head configured to write data to and read data from the disk, and a controller. The controller is configured to, for each of a plurality of unexecuted commands, carry out a calculation of an amount of time that is required for the head to start accessing the disk to begin execution of the non-executed command upon completion of a currently-executed command, until the earlier of i) a number of unexecuted commands for which the calculation has been carried out reaches a threshold value or ii) the completion of the currently-executed command, select a next command to be executed from one or more unexecuted commands for which the calculation has been carried out, based on the calculated amount of time for each of the one or more unexecuted commands, and execute the selected next command.”

The patent application was filed on March 7, 2018 (15/915,045).