Apparatus and method for automatically detecting presence of a s

Details Apparatus and method for automatically detecting presence of a s Apparatus and method for automatically detecting presence of a s

1997-07-28

1999-12-28

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

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

358488, G01N 2186

Patent

active

060085010

ABSTRACT:
The present invention discloses a scanned document auto-detecting apparatus for detecting the presence of a scanned document without additional control circuit. Based on the decision result, a scanning procedure starts to degrade cost by removing the additional control circuit, and furthermore, the scanned document auto-detecting apparatus can prevent users from running the scanning procedure wastefully when there is no scanned document. The scanned document auto-detecting apparatus sets a specific pattern at inner side of the cover. This specific pattern is first scanned before the scanning procedure starts as to decide the presence of the scanned document.

REFERENCES:
patent: 5568281 (1996-10-01), Kochis et al.
patent: 5760412 (1998-06-01), Yang et al.
patent: 5786590 (1998-07-01), Lin

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