Number | Name | Date | Kind |
---|---|---|---|
3225213 | Kinrichs et al. | Dec 1967 | |
3502993 | Schurzinger et al. | Mar 1970 | |
3751636 | Coles, Jr. | Aug 1973 | |
3761725 | Meyer | Sep 1973 | |
3804979 | Knowles | Apr 1974 | |
3909594 | Allais et al. | Sep 1975 | |
3991299 | Chadima, Jr. et al. | Nov 1976 | |
3999043 | Reiss et al. | Dec 1976 | |
4000397 | Herbert et al. | Dec 1976 | |
4020357 | Punis | Apr 1977 | |
4078227 | Fahey et al. | Mar 1978 | |
4104514 | Sherer et al. | Aug 1978 | |
4140271 | Nojiri et al. | Feb 1979 | |
4162408 | Hansen | Jul 1979 | |
4175256 | Dolikian | Nov 1979 | |
4196845 | Chesters | Apr 1980 | |
4354101 | Hester et al. | Oct 1982 | |
4360798 | Swartz et al. | Nov 1982 | |
4749879 | Peterson et al. | Jun 1988 | |
5103080 | Barkan | Apr 1992 | |
5149948 | Chisholm | Sep 1992 |
Number | Date | Country |
---|---|---|
90119615.4 | Jun 1991 | EPX |
Entry |
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"A Low Cost Light Wand Amplifier," Robin C. Moseley, Byte Magazine, May 1978, vol. 3, No. 5. |
"Dynamic Threshold Circuit," IBM Technical Disclosure Bulletin, vol. 15, No. 4, Sep. 1972, pp. 1138-1139. |
"Signal Processing For Optical Bar Code Scanning," Merkowitz, Byte Magazine, Dec. 1976. |
"Contrast Amplifier," IBM Technical Disclosure Bulletin, vol. 14, No. 3, pp. 883-884, Aug. 1971. |