公开(公告)号：US20180137997A1

公开(公告)日：2018-05-17

申请号：US15491990

申请日：2017-04-20

Applicant: PixArt Imaging Inc.

Inventor： Tsung-Fa Wang ,  Shih-Wei Kuo

IPC: H01H13/85 ,  H01H3/12

CPC classification number: H01H13/85 ,  H01H13/803 ,  H01H2215/03 ,  H01H2235/00 ,  H01H2239/022

Abstract: A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. The lifting unit is disposed on the substrate. The multistage positioning component is disposed on the substrate and has a plurality of first actuating portions. The keycap is connected with the lifting unit and adjacent by the multistage positioning component. The keycap has a second actuating portion. The keycap is moved relative to the substrate via the lifting unit, and the second actuating portion can contact against one of the plurality of first actuating portions to generate a feedback signal.

公开(公告)号：US20170244409A1

公开(公告)日：2017-08-24

申请号：US15175053

申请日：2016-06-07

Applicant: PixArt Imaging Inc.

Inventor： Tsung-Fa Wang ,  Yen-Min Chang ,  Feng-Cheng Yang ,  Shih-Wei Kuo

IPC: H03K17/96 ,  H01H13/14

CPC classification number: H03K17/9629 ,  H01H13/14 ,  H03K17/941 ,  H03K17/9622 ,  H03K17/9631 ,  H03K17/9647 ,  H03K17/968 ,  H03K17/975 ,  H03K2217/9655

Abstract: A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. The supporting component has a first end connecting to the keycap, and a second end movably assembled with the guide slot structure. The recovering component is disposed between the supporting component and the guide slot structure. The distance detecting unit is detachably disposed on the base, and adapted to detect a movement of the keycap relative to the base for determining whether the keyswitch is actuated.

公开(公告)号：US09342164B2

公开(公告)日：2016-05-17

申请号：US14057081

申请日：2013-10-18

Applicant: PIXART IMAGING INC.

Inventor： Chun-Wei Chen ,  Ren-Hau Gu ,  Shih-Wei Kuo

IPC: G06F3/033 ,  G06F3/038 ,  G06F3/0354 ,  G06F3/03

CPC classification number: G06F3/038 ,  G06F3/0317 ,  G06F3/03543

Abstract: A motion detecting device and the method for dynamically adjusting image sensing area is disclosed. The motion detecting device includes a light source, an image capture unit and a processing unit. The image capture unit is used to capture reference image according to fixed sampling period. The processing unit is used to calculate exposure reference value of the light source and image characteristic value of reference image. The processing unit according to the exposure reference value and the image characteristic value to determine whether the surface is in first rough coefficient range or second rough coefficient range. If rough coefficient of the surface is in the first rough coefficient range, the processing unit defines first search radius or second search radius to increase or decrease the image sensing area. Otherwise, the processing unit defines third search radius or fourth search radius to increase or decrease the image sensing area.

Abstract translation: 公开了一种运动检测装置和用于动态调整图像感测区域的方法。 运动检测装置包括光源，图像捕获单元和处理单元。 图像捕获单元用于根据固定采样周期捕获参考图像。 处理单元用于计算光源的曝光参考值和参考图像的图像特征值。 该处理单元根据曝光参考值和图像特征值来确定表面是处于第一粗糙系数范围还是第二粗糙系数范围。 如果表面的粗糙系数处于第一粗糙系数范围内，则处理单元定义第一搜索半径或第二搜索半径以增加或减少图像感测区域。 否则，处理单元定义第三搜索半径或第四搜索半径以增加或减少图像感测区域。