Method and device for interfacing an image scanner with an image processing device
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United States of America Patent
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Sep 12, 1989
Grant Date -
N/A
app pub date -
Jul 22, 1988
filing date -
May 19, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Video data signals which are generated from a portable image scanner and temporarily stored in a shift register in an interface circuit are transferred to an external image processing device such as a word processor through a switching circuit which turns on upon reception of a transfer permission signal from a latching circuit for validating scanning condition. Since the transferring of the video data signals to the image processing device are effected without being controlled by the image processing device, it can be performed at high speed without causing a scanning error even if the sub-scanning speed is rather increased.
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