Background compensating bar code readers
Background light intensity compensation circuit for a line scan
Backup method for multiple source optical scanner
Badge arrangement and badge with visual or audio indicator
Badge reader using infrared light
Badge reader with improved slide arrangement
Badge reader with reliable data clocking means
Balancing apparatus for magnetic circuits employed in data stora
Ball identifying device
Ball identifying device
Bank-note processing device
Bank-note processing device
Bank-note processing device
Banking card for automatic teller machines and the like
Banknote receipt and pay-out apparatus
Bar code acquisition utilizing moire patterns
Bar code addressing audio playing device
Bar code and method and apparatus for interpreting the same
Bar code and method of forming a bar code having color for...
Bar code and read-out method thereof