发明授权
- 专利标题: Automatic status discriminator
- 专利标题(中): 自动状态鉴别器
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申请号: US455906申请日: 1989-12-20
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公开(公告)号: US5023647A公开(公告)日: 1991-06-11
- 发明人: Yasuhiko Shiomi , Takayuki Tsuboi
- 申请人: Yasuhiko Shiomi , Takayuki Tsuboi
- 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: JPX61-10656 19860121
- 主分类号: G01J1/42
- IPC分类号: G01J1/42 ; G02B7/28 ; G03B7/28 ; G03B13/36
摘要:
An automatic status discriminator has a distance measuring unit for calculating the distance to a target object to provide a signal corresponding to the distance. A reflection coefficient calculation unit calculates the reflection coefficient of the target object on the basis of the signal provided from the distance measuring unit. A light intensity measuring unit provides signals respectively corresponding to the brightness of the target object and the brightness of a region near the target object. An adjusting unit adjusts the signal corresponding to the brightness of the target object on the basis of the reflection coefficient obtained from the reflection coefficient calculation unit to provide the adjusted signal. A status discriminating means compares the signal corresponding to the brightness of the region near the target object with the output from the adjusting unit to thereby discriminate the status of the target object.
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