Toshiba and Toshiba Electronic Devices and Storage Assigned Eight Patents

Disk with wiring board on outer surface of housing and connected to motor and sealing configuration
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,211,099) developed by Uehara, Manabu, Kawasaki Kanagawa, Japan, and Kawai, Yuu, Shinagawa Tokyo, Japan, for a “disk device with wiring board on outer surface of housing and connected to motor and sealing configuration.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a disk device includes a housing with a bottom wall, magnetic disks supported on a hub of a motor, a printed circuit board provided on an outer surface of the bottom wall, and a wiring board attached on the outer surface of the bottom wall. The bottom wall includes a recess formed in the outer surface, a step located on border between the outer surface and the recess, and through holes opened to the recess. The wiring board includes one end portion disposed in the recess and connection pads on the one end portion, connected to lead wires of a coil. An adhesive is filled into the recess and the through holes, and covers the one end and a solder joint and seals the through holes.”

The patent application was filed on September 10, 2020 (17/016,878).

Disk device
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,205,448) developed by Sato, Yuki, Fujisawa Kanagawa, Japan, for a “disk device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A disk device according to one embodiment includes a recording medium, a magnetic head, a wiring member, and a flexible printed circuit board. The magnetic head is configured to read/write information from/to the recording medium. The wiring member includes a plurality of first terminals, and a plurality of first wires that electrically connect the magnetic head to the first terminals. The flexible printed circuit board includes a surface, a plurality of second terminals located on the surface to be connected to the first terminals by means of a conductive adhesive, and a ground plane spaced apart from the second terminals in a direction along the surface.”

The patent application was filed on February 28, 2020 (16/804,384).

Disk with flexure wiring spacing configuration
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,195,549) developed by Nojima, Yusuke, Yokohama Kanagawa, Japan, for a “disk device with flexure wiring spacing configuration.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a disk device includes a recording medium, electronic components including a magnetic head, a flexure, and an adhesive. The flexure includes a surface on which the electronic component is mounted, a first wiring and a second wiring each extending along the surface, and a groove provided on the surface between the first/second wirings. The adhesive is in contact with an inner surface of the groove and includes an adhesive portion attaching the electronic component to the surface. A first portion in the flexure is provided in a position apart from the electronic component. A second portion in the flexure is positioned closer to the adhesive portion than the first portion. A distance between the first wiring and the second wiring is larger than that in the first portion.”

The patent application was filed on March 11, 2021 (17/198,586).

Magnetic disk and data protection
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,195,547) developed by Chokki, Kazuo, Fujisawa Kanagawa, Japan, for “magnetic disk device and data protection method thereof.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a monitoring unit of a magnetic disk device monitors a supply voltage supplied to a plurality of actuators by a first threshold value at which power supply by back electromotive force of a motor is started, and a second threshold value that is larger than the first threshold value. In a case where the supply voltage is lower than or equal to the second threshold value and is higher than the first threshold value, a controller interrupts execution of processing of reading/writing data to a magnetic disk in at least one of the actuators according to a predetermined condition based on execution status of the processing in the actuators.”

The patent application was filed on March 4, 2020 (16/808,432).

Magnetic recording and controlling magnetic head
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,189,317) developed by Matsumoto, Takuya, Tokyo, Japan, for “magnetic recording apparatus and method of controlling magnetic head thereof.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a magnetic recording apparatus measures and stores recording signal quality of a disk at an initial stage, inspects the recording signal quality before data is recorded, determines whether or not the recording signal quality obtained in the inspection satisfies a standard when compared to the stored recording signal quality at the initial stage, adjusts, based on a result of the determination, light irradiation power of a light irradiation element so as to satisfy the standard, determines a read offset amount based on a result of the adjustment, and performs control so that a position of a read head is shifted based on the determined read offset amount.”

The patent application was filed on September 30, 2020 (17/038,446).

Magnetic disk and write processing
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,189,305) developed by Tomoda, Yusuke, Kanagawa, Japan, for “magnetic disk device and write processing method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a magnetic disk device includes a disk, a head including a main magnetic pole having a first end and a second end opposite to the first end in a radial direction of the disk, a write shield facing the main magnetic pole with a gap, and an assist element provided in the gap and at a position where a first distance between the first end and the assist element and a second distance between the second end and the assist element are different from each other, and a controller which controls a voltage applied to the assist element according to a shingled write direction in which a second track is overwritten on a first track.”

The patent application was filed on February 16, 2021 (17/176,901).

Magnetic disk
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,183,210) developed by Tomita, Isamu, Kawasaki Kanagawa, Japan, for a “magnetic disk device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, the controller of the magnetic disk drive configured to synthesize the first positioning data and second positioning data obtained by the second reader reading the positioning information based on the evaluation data, and performs positioning of the magnetic head based on the synthesized positioning data.”

The patent application was filed on September 15, 2020 (17/021,095).

Magnetic disk
Kabushiki Kaisha Toshiba, Tokyo, Japan, and Toshiba Electronic Devices & Storage Corporation, Tokyo, Japan, has been assigned a patent (11,176,965) developed by Okada, Mio, Yokohama Kanagawa, Japan, Watanabe, Toru, Koizumi, Gaku, and Tomoda, Yusuke, Kawasaki Kanagawa, Japan, for a “magnetic disk device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head including an assist part to assist recording of data into the magnetic disk, a controller configured to control the recording of data by the magnetic head based on a recording condition, and a memory configured to record a first threshold value used to define that an assist element included in the assist part is in a deterioration condition. Furthermore, the controller detects the condition of the assist element, determines whether or not the recording condition is changed based on the detected condition and the first threshold value stored in the memory, and changes the recording condition based on the result of the determination.”

The patent application was filed on July 31, 2020 (16/944,599).