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    Ultra-resolving optical pickup device having an optical detector receiving an unfiltered reflected beam
    7.
    发明授权
    Ultra-resolving optical pickup device having an optical detector receiving an unfiltered reflected beam 失效
    具有接收未经滤波的反射光束的光学检测器的超分辨率光学拾取装置

    公开(公告)号：US5708635A

    公开(公告)日：1998-01-13

    申请号：US665492

    申请日：1996-06-18

    Applicant: Shuichi Ichiura ,  Osamu Ota

    Inventor： Shuichi Ichiura ,  Osamu Ota

    IPC: G02B27/58 ,  G11B7/09 ,  G11B7/135 ,  G11B7/095

    CPC classification number: G11B7/1381 ,  G11B7/0903 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1398 ,  G11B7/0909

    Abstract: An optical pickup device provides ultraresolving prism between a semiconductor laser and an objective lens so as to reduce light intensity at around a cross sectional center of a laser beam, thereby generating ultraresolution thereon. An optical detector is disposed at a signal detecting position where the laser beam reflected by an optical disk is converged. The optical detector has a detecting element for receiving a main lobe and a pair of detecting elements for receiving a pair of side lobes. A peak of a shielding portion of the prism is inclined to a track center of the optical disk so that the side lobes are oppositely shifted from the track center. Thus, tracking error signals are obtained on the basis of detected signals in the side lobes.

    Abstract translation: 光学拾取装置在半导体激光器和物镜之间提供超分辨棱镜，以便减少激光束横截面中心周围的光强度，从而在其上产生超分辨率。 光检测器设置在由光盘反射的激光束会聚的信号检测位置处。 光检测器具有用于接收主瓣的检测元件和用于接收一对旁瓣的一对检测元件。 棱镜的屏蔽部分的峰值倾斜于光盘的轨道中心，使得旁瓣从轨道中心相对移位。 因此，基于旁瓣中的检测信号获得跟踪误差信号。

    Character input device
    9.
    发明授权
    Character input device 有权

    公开(公告)号：US07530031B2

    公开(公告)日：2009-05-05

    申请号：US10351383

    申请日：2003-01-27

    Applicant: Keiichi Iwamura ,  Osamu Ota ,  Junya Yamaguchi ,  Shunsuke Tanaka ,  Kazuhiro Yoshihara

    Inventor： Keiichi Iwamura ,  Osamu Ota ,  Junya Yamaguchi ,  Shunsuke Tanaka ,  Kazuhiro Yoshihara

    IPC: G06F3/048

    CPC classification number: G06F3/018 ,  G06F3/0236

    Abstract: A character input device not completely occupying a screen, good in visibility, and enabling input of characters while reducing to a minimum the movement of the fingers and line of sight, which, in the case of input of for example the hiragana 50-character phonetic syllabary of the Japanese language, displays an initial block of the major group lead characters a (), ka (), sa (), ta (), na () on a first row of a character input region on a display screen and the block of the remaining major group lead characters ha (), ma (), ya (), ra (), wa () on the second row, allows movement of a focus position or character position by “left” and “right” keys (a ()→ka ()→sa ()→ . . . ), switches the character focused to the block of ha (), ma (), ya (), ra (), wa () after the focus position reaches na (), allows switching between displayed characters by for example using the “down” key to move to the next character (for example, a ()→i ()→u ()→ . . . ) and using the “up” key to move to the furthest character in the group (for example, a ()→o ()→ . . . ), and allowing input of the character by using a “decision” key when the character to be input is focused on.

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