Information scanner providing two separate digital images of a w

Details Information scanner providing two separate digital images of a w Information scanner providing two separate digital images of a w

1992-01-02

1993-09-21

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

235472, H01J 516

Patent

active

052471705

ABSTRACT:
An information scanning apparatus for scanning and marking parts of a written text comprises two viewing elements (14,16) for forwarding information concerning scanned text to a linescan camera (42) so as to provide two physically displaced digital images of the relevant parts of the text. A highlighter pen (34) located adjacent the viewing elements (14,16) marks the scanned text as well as providing control feedback to the scanning operation such that the apparatus can deal with variations in speed, text quality and attitude of the scanning head 10.

REFERENCES:
patent: 3781555 (1973-12-01), Keefe
patent: 4053765 (1977-10-01), Kuffer
patent: 4760606 (1988-07-01), Lesnick et al.

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