Registers – Coded record sensors – Particular sensor structure
Patent
1991-07-02
1993-09-14
Pitts, Harold
Registers
Coded record sensors
Particular sensor structure
235463, 235467, 235472, G06K 710
Patent
active
052451674
ABSTRACT:
A bar-code reading apparatus in which a bar-code is scanned and processed for recognition of the bar-code on the basis of the scanning comprises scanning signal storage means for storing scanning signals which are obtained by scanning the bar-code and which correspond to bars and/or spaces scanned in at least two successive scannings. A counter counts the number of bars and/or spaces scanned in each scanning, while a number-of-bars storage means stores count values of the counter means in at least two successive scannings. A first comparison means compares the respective count values of the counter means in the last two scannings stored in the number-of-bars storage means with each other and generates an enabling signal when the count value in the last scanning is not larger than that in the preceding scanning. Finally, a recognition means responds to the enabling signal and operates to read the scanning signal preceding the last signal stored in the scanning signal storage means, thereby performing a process for recognizing the bar-code.
REFERENCES:
patent: 3932840 (1976-01-01), Hanchett
patent: 4135663 (1979-01-01), Nojiri
patent: 4323772 (1982-06-01), Sergie
patent: 4781596 (1988-11-01), Weinblatt
patent: 5086215 (1992-02-01), Carsner
patent: 5124538 (1992-06-01), Lopinski
Pitts Harold
Sumitomo Electric Industries Ltd.
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