G - Physics – 06 – K
Patent
G - Physics
06
K
354/56
G06K 7/10 (2006.01) G06K 19/06 (2006.01)
Patent
CA 1040313
CODE RECOGNITION APPARATUS Abstract of the Disclosure An apparatus for reading on a record medium a two level code representing at least one character of a set of characters, each character having six consecutive transitional occurrences between the two levels of the code comprising: a device for scanning the record medium to derive a time based electrical signal having pulses representative of said transitional occur- rences to define at least four periods between alternate ones of said pulses; a measuring circuit for generating a representative signal level for each period; comparing means for taking a ratio for each two overlapping periods to generate three ratios, each ratio representing not more than one of three possible values of nearly one, smaller than one and larger than one, and; apparatus for decoding the values arrived at for the three ratios to define a character. The comparing means includes circuitry for setting a tolerance window about the second one of the two overlapping periods, to define upper and lower signal levels. In addition, the signal level of the first one of the two overlapping periods are modified to provide three modified signal levels, each of which is separately compared with the upper and lower signal tolerance levels.
214673
LandOfFree
Code recognition apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Code recognition apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code recognition apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-869020