Patent ID: 6208433
Filing Date: 2001-03-27
Classification: H04N

Abstract:
An image detection apparatus for use in detecting an image of an original copy with a one-dimensional image detector, and for capturing a two-dimensional image of the original copy by mechanically scanning the original copy in a direction perpendicular to the one-dimensional image detector, comprising:an optical guide means for receiving ambient light and directing the ambient light to a portion of the one-dimensional image detector,wherein the one-dimensional image detector includes a flicker signal detection area for detecting the light output from the optical guide means, and an image signal detection area for detecting an image of the original copy, wherein the flicker signal area and the image signal area are completely separated optically in the one-dimensional image detector,a flicker compensation means for eliminating flicker noise in the received light caused by the light varying in response to a utility power supply frequency, by using a photoelectric conversion signal of the light obtained from said optical guide means.