Correction circuit of a halftone dot area rate detector

Details Correction circuit of a halftone dot area rate detector Correction circuit of a halftone dot area rate detector

1981-11-10

1983-08-23

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250559, H01J 4014

Patent

active

044006179

ABSTRACT:
A correction circuit of a halftone dot area rate detector wherein a relation between a detected halftone dot area rate and a light transmittance or reflectance of an object obtained by a halftone photography is approximately expressed by a turning curve having at least one turning point, which comprises line segments, by using a turning point correction circuit comprising an inverting amplifying circuit, wherein another inverting amplifying circuit is coupled in parallel with the turning point correction circuit, and wherein a potensiometer couples the outputs of the two circuits and outputs a signal corresponding to a correction amount.

REFERENCES:
patent: 4259570 (1981-03-01), Leonard

Affiliated with

Also associated with

Rating

Correction circuit of a halftone dot area rate detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Correction circuit of a halftone dot area rate detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correction circuit of a halftone dot area rate detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1948636