Image reading device

Details Image reading device Image reading device

H - Electricity

04

N

350/1

H04N 1/40 (2006.01) H04N 1/403 (2006.01)

Patent

CA 1285063

ABSTRACT An image reading device comprises a light source for illuminating a medium to be read and a line sensor including a line of photoelectric conversion elements for receiving light from the medium and producing an image signal. White levels are determined for respective intervals into which the line of photoelectric conversion elements are divided. The device sets threshold levels for the respective intervals on the basis of the white levels for the respective intervals, and the image signal is compared with the set threshold levels to produce a series of binary signals. The condition of the light source being "off" or not lit is determined on the basis of the relative magnitude between the white levels for the intervals.

556153

Affiliated with

Also associated with

Rating

Image reading device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reading device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1208655