Object detecting device and method with means for...

Details Object detecting device and method with means for... Object detecting device and method with means for...

2005-10-18

2005-10-18

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

C356S004010

Reexamination Certificate

active

06956227

ABSTRACT:
An object detecting device has components which emit electromagnetic waves by scanning a scan range in horizontal and vertical directions, receive reflected waves, obtain signal level of the received reflected waves, calculate a correction value based on vertical position of the zone in the scan range where the level of the received waves is the highest and the center position of the scan range in the vertical direction, and correct the center position in the vertical direction of the scan range based on the calculated correction value.

REFERENCES:
patent: 5020620 (1991-06-01), Field
patent: 5745050 (1998-04-01), Nakagawa
patent: 6657705 (2003-12-01), Sano et al.

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