Masahiko Nishimoto
Masahiko Nishimoto, Osaka JP
Patent application number | Description | Published |
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20090034394 | Optical Pickup - An optical pickup device in which a hologram element has a plurality of different diffraction directions. In the tracking standard state, the hologram element is divided into six areas by a straight line connecting two strength center points of two light beams, and by two straight lines that are perpendicular to the straight line. By adding the amount of light received by an area demarcated by two straight lines that pass the two strength center points, to the amount of light received by one of two outer areas sandwiching the area depending on the type of the light beam, it is possible to obtain a well-balanced tracking error signal for each of the two light beams. | 02-05-2009 |
20090168628 | OPTICAL PICKUP APPARATUS - An optical pickup apparatus for use with a semiconductor laser which outputs a light beam, the optical pickup apparatus has; | 07-02-2009 |
20100014411 | OPTICAL PICKUP DEVICE - A pickup device includes a diffraction grating | 01-21-2010 |
20100157778 | OPTICAL PICKUP DEVICE - An optical pickup device includes a diffraction grating | 06-24-2010 |
20100177618 | OPTICAL PICKUP DEVICE - An optical pickup device includes a diffraction grating | 07-15-2010 |
20100238780 | OPTICAL PICKUP DEVICE - A pickup device includes a diffraction grating | 09-23-2010 |
20110176403 | OPTICAL HEAD DEVICE, OPTICAL INFORMATION PROCESSING DEVICE, AND SIGNAL DETECTION METHOD - An optical head device includes a light source ( | 07-21-2011 |
Masahiko Nishimoto, Kanagawa JP
Patent application number | Description | Published |
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20090116182 | ATTACHMENT UNIT FOR INFORMATION STORAGE DEVICE, AND ELECTRONIC APPARATUS - An attachment unit for an information storage device includes a casing that houses the information storage device and a fixed base on which the casing is detachably mounted. The casing includes a casing body, a pair of rotation supporting shaft portions, a pair of first engagement portions, and a latch portion. The fixed base includes a substantially L-shaped groove, a pair of second engagement portions, and a latch fitting portion. In a state where the casing is mounted on the fixed base, (i) the first engagement portions are in partial contact with the second engagement portions in the first direction, (ii) the casing body is sandwiched in a second direction intersecting the first direction, and (iii) the rotation supporting shaft portions and the latch portion are in partial contact with the grooves and the latch fitting portion, respectively, in a third direction intersecting the first direction and the second direction. | 05-07-2009 |
20090122496 | Electronic Module and Electronic Device - An electronic module includes a board unit having a handle and a module housing. The handle includes a grip portion and a pair of leg portions. The leg portions have engagement convex portions extending from portions serving as rotary pivots, of the leg portions. The module housing includes an engagement concave portion provided to correspond to the engagement convex portions. When the board unit is inserted into the module housing, by rotating the handle around the rotary pivots in a direction along which the grip portion approaches the panel portion, the engagement convex portions are brought into contact with a part of the engagement concave portion to produce a force in a direction, along which the board unit is pressed into the module housing. | 05-14-2009 |