发明名称 |
SPATIAL INFORMATION DETECTING DEVICE |
摘要 |
In an apparatus using an intensity-modulated light for detection of spatial information based upon light intensity of light reflected from a target space, a timing synchronization circuit is provided to synchronize a phase of the intensity-modulated light from a light-emitting element with a timing of operating a light-receiving element receiving the intensity-modulated light. The light-receiving element is caused to operate for enabling the detection of intensity of the received light for each of a plurality of phase regions within one cycle of the intensity-modulated light. The timing synchronization circuit functions to compare a cyclic variation determining the operation of the light-receiving element with a cyclic variation associated with an output from a light-emitting element driving circuit in order to keep a constant phase difference between these two cyclic variations. |
申请公布号 |
HK1127720(A1) |
申请公布日期 |
2012.06.01 |
申请号 |
HK20090106830 |
申请日期 |
2009.07.24 |
申请人 |
PANASONIC CORPORATION |
发明人 |
KUMAHARA, MINORU;HASHIMOTO, YUSUKE;SAKAMOTO, SHINJI;TAKADA, YUJI |
分类号 |
G01C;G01S |
主分类号 |
G01C |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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