Apparatus for line scanning a document

Details Apparatus for line scanning a document Apparatus for line scanning a document

1988-07-01

1992-02-25

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 44, 358474, 358483, G06K 900

Patent

active

050919784

ABSTRACT:
An image reading apparatus having a line image sensor for line scanning a document. The line image sensor includes plural sensor chips aligned in a main scan direction for outputting image signals. Plural analogue to digital converters convert analogue image signals output from respective image sensor chips into digital form. Plural FIFO memories store the digitalized image data. The digitalized image data obtained from each of the sensor chips is written in parallel into the corresponding memory. The digitalized image data is output serially in the order of alignment of the sensor chips.

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