发明授权
- 专利标题： Information detection apparatus and displacement information measurement apparatus
- 专利标题（中）： 信息检测装置和位移信息测量装置
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申请号： US132161申请日： 1993-10-05
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公开(公告)号： US5349735A公开(公告)日： 1994-09-27
- 发明人: Toshimitsu Kawase , Akihiko Yamano , Ryo Kuroda , Hiroyasu Nose , Toshihiko Miyazaki
- 申请人： Toshimitsu Kawase , Akihiko Yamano , Ryo Kuroda , Hiroyasu Nose , Toshihiko Miyazaki
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-179558 19900709
- 主分类号： G01B7/00
- IPC分类号： G01B7/00 ; G01B7/34 ; G01D5/244 ; G01D5/245 ; G01N27/00 ; G01Q10/04 ; G01Q30/04 ; G01Q30/06 ; G01Q60/00 ; G01Q60/10 ; G01Q70/00 ; G01Q80/00 ; G11B9/00 ; H01J37/00
摘要：
An information detection apparatus is disclosed. A plurality of probes are arranged in the apparatus so as to face a medium which carries an information, Each of the plurality of probes produces a detection signal from the medium. A performance testing device is provided in the apparatus for testing the performance of each of the plurality of probes. A detection device in the apparatus selects the signal from at least one normal probe on the basis of the test result of the testing device and detects the information in accordance with the selected signal. By such the construction in the apparatus, the detection of the information can be continuously effected even if one of the probes is broken.
公开/授权文献
- US6152869A Radioactive stent and process for preparation thereof 公开/授权日：2000-11-28
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