Variable resolution scanning in line scan optical imaging system

Details Variable resolution scanning in line scan optical imaging system Variable resolution scanning in line scan optical imaging system

1984-04-20

1986-03-11

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358293, 355 14SH, H04N 104

Patent

active

045757690

ABSTRACT:
An improvement to a facsimile system which enables the simulation of 240 and 300 DPI feedwise scan resolutions in a system designed to operate at 200 and 400 DPI feedwise scan resolutions. The simulation is accomplished by feedwise advancing a document past a horizontal image scanner in defined sequences of half and full steps, half steps causing the document to be feedwise advanced by one four-hundredth of an inch (as in 400 DPI mode), full steps causing the document to be feedwise advanced by one two-hundredth of an inch (as in 200 DPI mode). The scan resolution errors introduced by the simulation are non-cumulative since the system comes back into feedwise synchronization with true 240 and 300 DPI scan resolutions each time one of the defined three operation sequences is completed. Also, a method of operating a document feeding system to approximate 240 and 300 DPI feedwise scan resolutions.

REFERENCES:
patent: 4217611 (1980-08-01), Ogawa
patent: 4220978 (1980-09-01), Rhyims et al.
patent: 4388652 (1983-07-01), Dukes et al.
R. Perabo, "Technik der Fernkopierer", Machrichten Electronik, Heidelberg, vol. 35, No. 10, Oct. 1981, pp. 401-405.
K. Kobayashi et al., "High-Speed Digital Facsimile Equipment Development", Review of the Electrical Communication Laboratories, vol. 28, Nos. 1-2, Jan.-Feb. 1980, Tokyo, pp. 115-130.

Affiliated with

Also associated with

Rating

Variable resolution scanning in line scan optical imaging system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable resolution scanning in line scan optical imaging system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable resolution scanning in line scan optical imaging system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2193860