Title:
IMAGE INPUT DEVICE
Document Type and Number:
Japanese Patent JPH1118014
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To simplify control and furthermore to easily adjust an integration amount without losses, corresponding to the lightness of an object by providing plural A/D converters installed corresponding to plural line sensors, plural delay means, and plural adder circuits for adding digital data. SOLUTION: A/D converters 141 -144 transform the output signals of buffer amplifiers 131 -134 for amplifying signals corresponding to charges outputted from line sensors 111 -114 into digital data and output them. Respective line memories 15 temporarily store all the digital data for one line worth of A/D converters 141 -144 or delay lines 16. The respective delay lines 16 output the digital data, while delaying them for prescribed times so as to add them corresponding to the charges provided by photographing the same region of the object with the respective line sensors 111 -114 . An adding processing circuit 17 adds and outputs the respective data blocks of digital data from the line memories 15 or delay lines 16.
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Inventors:
SATO KOJI
Application Number:
JP16437797A
Publication Date:
January 22, 1999
Filing Date:
June 20, 1997
Export Citation:
Assignee:
NEC CORP
International Classes:
G01N21/89; H04N5/335; H04N5/341; H04N5/369; H04N5/372; H04N5/374; H04N5/378; (IPC1-7): H04N5/335; G01N21/89