Frequency shifter for acquiring an optical target

Details Frequency shifter for acquiring an optical target Frequency shifter for acquiring an optical target

1994-10-28

1999-11-09

Couso, Jose L

Image analysis

Image transformation or preprocessing

Selecting a portion of an image

G06K 920

Patent

active

059829508

ABSTRACT:
A method and system for acquiring an optical target affixed to a surface of a package with an optical scanning device. Height information associated with the height of the surface of the package is sensed and a height signal representative of a scanning distance between the optical target and the optical scanning device is generated. The package surface is scanned with the optical scanning device to generate an optical target input signal. The optical target input signal is converted in accordance with a first sampling frequency to provide a converted input signal, and a second resampling frequency is adjusted in accordance with the height signal. The converted input signal is reconverted in accordance with the second resampling frequency to generate a frequency shifted optical target signal, and the optical target on the surface of the package is acquired in accordance with the frequency shifted optical target signal.

REFERENCES:
patent: 3947833 (1976-03-01), Eckstein, Jr.
patent: 4348735 (1982-09-01), Hertz et al.
patent: 4361875 (1982-11-01), Hertz et al.
patent: 4497065 (1985-01-01), Tisdale et al.
patent: 4737728 (1988-04-01), Nakamura et al.
patent: 4739401 (1988-04-01), Sacks et al.
patent: 4870482 (1989-09-01), Yasuki et al.
patent: 4874936 (1989-10-01), Chandler et al.
patent: 4896029 (1990-01-01), Chandler et al.
patent: 4905292 (1990-02-01), Wentworth et al.
patent: 4998010 (1991-03-01), Chandler et al.
patent: 5027422 (1991-06-01), Peregrim et al.
patent: 5067018 (1991-11-01), Sakamoto et al.
patent: 5184219 (1993-02-01), Cho
patent: 5200811 (1993-04-01), Cho
patent: 5226083 (1993-07-01), Taguchi
patent: 5274361 (1993-12-01), Snow
patent: 5291564 (1994-03-01), Shah et al.
Patent Abstracts of Japan, vol. II, No. 110 (E-496) 1985.
IBM Technical Disclosure Bulletin, vol. 22, No. 6, Nov., 1979, New York U.S., p. 2250, A.J. Dattilo and M.C. Nielson, "Variable Resolution Linear Array Scanner".

Affiliated with

Also associated with

Rating

Frequency shifter for acquiring an optical target does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency shifter for acquiring an optical target, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency shifter for acquiring an optical target will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1467158