Device and method for maintaining image scanner data output rate

Details Device and method for maintaining image scanner data output rate Device and method for maintaining image scanner data output rate

1995-09-28

1997-11-11

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Picture signal generator

382317, 382319, H04N 104

Patent

active

056870094

ABSTRACT:
A method for varying a scanline rate of a digital scanner while maintaining a constant integration period. The scanner scans a scanline of an image, integrates an array of photosensors after a first predetermined period of time has elapsed and after a second predetermined period of time has elapsed. One of the predetermined periods is equal to an integration period of the array of photosensors, and the other period is equal to a difference between a time needed to process a scanline of image data and the integration period of the array of photosensors. The scanner produces a scanline of valid image data and a scanline of image data corresponding to the first scanned scanline. The scanner then scans the next scanline of the image. By having a variable dummy or garbage integration period in conjunction with the analog image unit's constant rated integration period to form the scanline period, a scanner can utilize a variable scanline period while maintaining a constant integration period and a synchronous scanning operation so as to capitalize on the increase efficiency of new photosensors and faster microprocessors and other processing circuitry.

REFERENCES:
patent: 4541061 (1985-09-01), Schoon
patent: 4587415 (1986-05-01), Tsunekawa et al.
patent: 4628368 (1986-12-01), Kurata et al.
patent: 4878119 (1989-10-01), Beikirch et al.
patent: 5043827 (1991-08-01), Beikirch

Affiliated with

Also associated with

Rating

Device and method for maintaining image scanner data output rate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device and method for maintaining image scanner data output rate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for maintaining image scanner data output rate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1233246