White level detection circuit for an optical image reader

Details White level detection circuit for an optical image reader White level detection circuit for an optical image reader

G - Physics

06

K

G06K 7/10 (2006.01) G06K 9/38 (2006.01)

Patent

CA 2063070

In the white level detection circuit for an optical image reader, for a low value portion in an image, the white level signal corresponding to an image signal of a high value background portion which precedes to the low value portion is held steady. Accordingly, even if the low value image portion has a long duration, the white level signal may be kept at a proper value for the image signal corresponding to the low value image signal. For the high value background portion, the white level signal that immediately follows a variation of the image signal can be obtained. Therefore, a proper white level signal can be generated for the background portion. Various processing applied to the image signal on the basis of the white level signal may be performed in a satisfactory manner. As a consequence, the read performance of the optical image reader may be remarkably improved. -21-

Affiliated with

Also associated with

Rating

White level detection circuit for an optical image reader does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with White level detection circuit for an optical image reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and White level detection circuit for an optical image reader will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1721902