A communication system for a wireless bar code reader includes a wireless bar code reader transmitter for reading bar code information and transmitting a radio signal, and a receiver for receiving the radio signal from the wireless bar code reader transmitter and transmitting reception data to a host...http://www.google.com.hk/patents/US5945660?utm_source=gb-gplus-share專利 US5945660 - Communication system for wireless bar code reader
