Integrated circuit architecture of contact image sensor for generating binary images
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United States of America Patent
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Feb 10, 2004
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app pub date -
Feb 5, 1999
filing date -
Feb 5, 1999
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Abstract
An integrated circuit architecture of contact image sensor for generating bi-level images and associated method are disclosed. The architecture comprises an image sensor, an amplifier, an analyzing circuit and a comparator, in one particular embodiment, it further comprises an electrically erasable programmable read-only memory (EEPROM). The amplifier is coupled to the image sensor and receives electronic signals therefrom and further receives pairs of gain and offset from the EEPROM. The electronic signals are adjusted in the amplifier respectively and sequentially in accordance to the pairs of gain and offset. The analyzing circuit determines a dynamic threshold to the comparator that subsequently produces the bi-level images.
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