Image reader
AssigneeSeiko Epson Corporation
InventorKeiichi Okamura
Life of this patent
Estimating the term…
Abstract
In an image reader, delay circuits are disposed on connection lines connecting an A/D converter with an image data generation circuit, whereby the output timings of the digital electric signals output from the A/D converter differ. Thus, the digital electric signals are not output at the same time from the adjacent output terminals of the A/D converter. Thus, the digital electric signals output from the A/D converter do not make a low to high or high to low transition at the same time and amplifying of EMI is decreased. Therefore, noise can be prevented from being contained in image data generated by the image data generation circuit and the quality of the image read through the image reader can be improved.
Claims5
An image reader comprising:
- an image pickup device on which light from an original is made incident, for outputting an analog electric signal responsive to the strength of the incident light;
- an A/D conversion section having a plurality of output pins for converting the analog electric signal output from the image pickup unit into a digital electric signal;
- an image data generation section for generating digital image data from the digital electric signal output from the A/D conversion section;
- and
- delay circuits placed between the A/D conversion section and the image data generation section for making different output timings of the digital electric signals output from the A/D conversion section.
Dependencies are inferred from the claim text.