Tatsuya Katoh
Tatsuya Katoh, Kanagawa JP
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20110102929 | DISK DRIVE AND METHOD OF TIMING CONTROL FOR SERVO-DATA DETECTION - A method of timing control for servo-data detection in a disk drive. The method includes retrieving a plurality of servo sectors arranged discretely in a circumferential direction of a disk and measuring time intervals between servo sectors. The method also includes determining in which zone of a plurality of preset zones each of the measured time intervals is included. Moreover, the method also includes determining variations in time intervals from the zones of a plurality of previous time intervals, and modifying timing for servo-sector detection if variations in time intervals are within a preset range. | 05-05-2011 |
Tatsuya Katoh, Tokyo JP
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20120280167 | FERRITE MAGNETIC MATERIAL, FERRITE MAGNET, AND FERRITE SINTERED MAGNET - A ferrite magnet and a ferrite sintered magnet including a ferrite magnetic material are provided. A main phase of the ferrite magnetic material includes a ferrite phase having a hexagonal crystal structure, and metal element composition expressed by Ca1-w-x-yR wSr xBayFezMm wherein 0.2511-08-2012 | |
20140097378 | FERRITE MAGNETIC MATERIAL, FERRITE MAGNET, AND FERRITE SINTERED MAGNET - A ferrite magnet and a ferrite sintered magnet including a ferrite magnetic material are provided. A main phase of the ferrite magnetic material includes a ferrite phase having a hexagonal crystal structure, and metal element composition expressed by Ca1-w-x-yR wSr xBayFezMm wherein 0.2504-10-2014 | |
Tatsuya Katoh, Ebina-Shi JP
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20150311403 | LED LIGHTING APPARATUS AND METHOD FOR MANUFACTURING THE SAME - To provide an LED lighting apparatus and a method for manufacturing the same that can improve the bonding strength between an aluminum substrate and a printed wiring substrate. An LED lighting apparatus and a method for manufacturing the same, the LED lighting apparatus includes an aluminum substrate, a plurality of reflectivity-enhanced layers formed on the aluminum substrate, an LED device bonded on said plurality of reflectivity-enhanced layers, a printed wiring substrate bonded onto a region on the aluminum substrate other than a region where the plurality of reflectivity-enhanced layers are formed, a wire for connecting between the printed wiring substrate and the LED device, a frame member formed so as to surround said LED device, and a phosphor resin deposited over a region inside the frame member. | 10-29-2015 |