Light-receiving element unit, a method and device for digital image input
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United States of America Patent
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Apr 16, 2002
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N/A
app pub date -
Sep 28, 1998
filing date -
Aug 24, 1998
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Abstract
An A/D converter converts analog data received from a light-receiving element via an amplifier to digital data. From the A/D converter, digital data is transmitted via a multiplier to a comparing circuit. The comparing circuit compares the digital data with a reference data, and when the absolute value of the difference thereof is equal to or more than a present threshold value outputs the digital data to the switch circuit via the multiplier, and also updates the reference value. Then the reference data is updated with the digital data. When a bus line is idle, a controller switches output from the switch circuit and outputs the digital data to the bus line. Then address data and time code are appended to the digital data.
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