Binary circuit of scanner read image data

Details Binary circuit of scanner read image data Binary circuit of scanner read image data

1992-02-12

1994-05-24

Chilcot, Jr., Richard E.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358443, 358465, 382 50, 382 53, H04N 140

Patent

active

053154053

ABSTRACT:
A binarizing circuit is provided for converting an image signal generated by an image scanner into a binary signal. The image scanner scans an image and generates a corresponding image signal. The image signal has a signal magnitude which varies in accordance with the density of the scanned image. A first comparator compares the signal magnitude of the image signal with a first threshold, and a second comparator compares the signal magnitude of the image signal with a second threshold which is different than the first threshold. An output circuit generates a binary signal which is made up of first and second values which respectively denote a presence of the scanned image and an absence of the scanned image. The output circuit generates the first value of when the signal magnitude of the image signals is between the first and second thresholds, and the output circuit generates the second when the signal magnitude of the image signal is not between the first and second thresholds.

REFERENCES:
patent: 3973239 (1976-08-01), Kakumoto et al.
patent: 4251837 (1981-02-01), Janeway, III
patent: 4694353 (1987-09-01), Sato et al.
patent: 4723173 (1988-02-01), Tanioka
patent: 4996602 (1991-02-01), Ono et al.
patent: 5109436 (1992-04-01), Machida et al.
patent: 5159471 (1992-10-01), Satou et al.
IBM Technical Disclosure Bulletin, vol. 16 No. 4 Sep. 1973 pp. 1247-1248.

Affiliated with

Also associated with

Rating

Binary circuit of scanner read image data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Binary circuit of scanner read image data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Binary circuit of scanner read image data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1977091