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4782221 | Brass et al. | Nov 1988 | A |
4910725 | Drexler et al. | Mar 1990 | A |
5180901 | Hiramatsu | Jan 1993 | A |
5304786 | Pavlidis et al. | Apr 1994 | A |
5761219 | Maltsev | Jun 1998 | A |
5778011 | Blaum et al. | Jul 1998 | A |
6186485 | Yoshioka | Feb 2001 | B1 |
Number | Date | Country |
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19648767 | Jun 1997 | DE |
0110367 | Jun 1984 | EP |
Entry |
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Javidi, B. and Ahouzi, E. “Optical Security System with Fourier Plane Encoding” Applied Optics vol. 37, No. 26, Sep. 10, 1998, pp. 6247-6255. |
Uniform Symbology Specification PDF417; Jul. 1994; AI USA; Pittsburgh, Pennsylvania. |