A bar-code reader which reads a bar code label through the scanning operation comprises a waveform processing circuit, a memory unit for storing data in a serial manner in synchronism with the scanning across the bar code symbol, an extraction unit for extracting a bar code symbol from the output of...http://www.google.fr/patents/US5471041?utm_source=gb-gplus-shareBrevet US5471041 - Bar-code reader device
