发明授权
- 专利标题： Through hole formation state detecting device and electronic timepiece using the detecting device
- 专利标题（中）： 通孔形成状态检测装置和使用该检测装置的电子钟表
-
申请号： US12236601申请日： 2008-09-24
-
公开(公告)号： US07633075B2公开(公告)日： 2009-12-15
- 发明人: Haruo Ono , Hiroyuki Chubachi
- 申请人： Haruo Ono , Hiroyuki Chubachi
- 申请人地址： JP Tokyo
- 专利权人： Casio Computer Co., Ltd.
- 当前专利权人： Casio Computer Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Frishauf, Holtz, Goodman & Chick, P.C.
- 优先权： JP2007-255357 20070928
- 主分类号： G01N21/86
- IPC分类号： G01N21/86
摘要：
When a light emission element emits no light, a detected signal from a photodetection element is captured as an intensity of external light. Then, a threshold value is offset by the intensity of the external light. The offset threshold is then compared to a detected signal from the photodetection element when the light emission element emits light, thereby determining the presence of a through hole between the light emission element and the photodetection element through which hole light passes without being influenced by external light.
公开/授权文献
信息查询
