Registers – Coded record sensors – Particular sensor structure
Patent
1994-02-16
1995-09-05
Hajec, Donald
Registers
Coded record sensors
Particular sensor structure
235454, G06K 710
Patent
active
054480493
ABSTRACT:
A latent image bar code (LIBC) reader located in relation to a filmstrip transport path for reading bar code data imprinted on the edge of a filmstrip. The LIBC reader comprises at least one illumination source and linear array of CCD elements extending transversely from one side wall of the film transport path. When suitably clocked out, each CCD element provides a signal dependent on the intensity of the illumination received. The output signals from the CCD array are processed to detect an edge of the filmstrip by the contrast in signal amplitude due to attenuation of the transmitted light intensity by the filmstrip substrate at the junction of the filmstrip with a gap separating the filmstrip edge and the side wall of the transport path. Once the edge of the filmstrip is identified, the output signals of segments of the CCD array aligned with the clock and data tracks of the bar code are sampled, digitized and compared to reference signals to discern the bar code pattern in the clock and data tracks. The bounds of the segments of CCD elements sampled are preferably set as sample time boundary functions triggered on edge detection.
REFERENCES:
patent: 3857020 (1974-12-01), Higginbotham et al.
patent: 4012004 (1990-06-01), Imamura et al.
patent: 4629876 (1986-12-01), Kubota et al.
patent: 4659213 (1987-04-01), Matsumoto
patent: 4691112 (1987-09-01), Wydler
patent: 4906854 (1990-03-01), Rauh et al.
patent: 4973829 (1990-11-01), Ishida et al.
patent: 5122645 (1992-06-01), Saeki et al.
patent: 5128519 (1992-07-01), Tokuda
patent: 5164574 (1992-11-01), Ujiie et al.
Easterly Robert W.
Shafer Mark E.
Eastman Kodak Company
Hajec Donald
Le Thien Minh
Woods David M.
LandOfFree
Film latent image bar-code (LIBC) reader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Film latent image bar-code (LIBC) reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Film latent image bar-code (LIBC) reader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-473566