Image signal processing device, image reading apparatus to extract line image data from an image signal when horizontal synchronization pulses are determined as normal, and a determination portion determines whether horizontal synchronization pulses are normal by comparing time differences between the input of the horizontal synchronization pulses and input of the reference pulses with a shift time

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United States of America Patent

PATENT NO 11595540
APP PUB NO 20220311899A1
SERIAL NO

17653752

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Abstract

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An image signal processing device includes a reference signal generating portion, a determination portion, and an extraction portion. The reference signal generating portion generates and outputs a reference signal that sequentially transmits reference pulses shifted from horizontal synchronization pulses on a horizontal synchronization signal by a predetermined shift time. The determination portion determines whether the horizontal synchronization pulses are normal by comparing time differences between input of the horizontal synchronization pulses and input of the reference pulses with the shift time. The extraction portion extracts line image data points from an image signal in synchronization with the input of the horizontal synchronization pulses that have been determined as normal.

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Patent Owner(s)

Patent OwnerAddress
KYOCERA DOCUMENT SOLUTIONS INC1-2-28 TAMATSUKURI CHUO-KU OSAKA-SHI OSAKA 5408585 ?5408585

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takahashi, Masayoshi Osaka, JP 112 1671

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