Calibrated color scanner with reference level adjustment

Details Calibrated color scanner with reference level adjustment Calibrated color scanner with reference level adjustment

1992-08-28

1993-08-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358496, H01J 314, H04N 140

Patent

active

052371727

ABSTRACT:
A rotary color scanner has both linear and logarithmic mode static and dynamic calibration to quickly and automatically calibrate the scanner before each scan, as well as during a given scan, without operator intervention of any kind, whether in the factory or in the field. Close calibration is achieved, despite the use of photomultiplier detectors which are inherently particularly susceptible to drift, and despite the use of high intensity lamps whose output typically varies greatly with aging. The system establishes operation at an optimized data throughput rate up to a limit determined by the maximum scan rate of the system, and thereafter switches to operation at an optimized signal
oise ratio.

REFERENCES:
patent: 4972273 (1990-11-01), Burkhardt et al.
patent: 4982294 (1991-01-01), Morton et al.
patent: 5038225 (1991-08-01), Maeshima
patent: 5103319 (1992-04-01), Ito et al.
patent: 5105266 (1992-04-01), Telle
patent: 5105286 (1992-04-01), Sakurai
patent: 5115327 (1992-05-01), Ishima
patent: 5185673 (1993-02-01), Sobol

Affiliated with

Also associated with

Rating

Calibrated color scanner with reference level adjustment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Calibrated color scanner with reference level adjustment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calibrated color scanner with reference level adjustment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2246030