초록 ▼

A circuit that combines the functionality of a bar code scanner and an RFID circuit is provided. This circuit uses certain functional blocks for processing both the bar code signals and the RFID signals. As a result, the space and power consumed by the circuit are substantially reduced such that the

A circuit that combines the functionality of a bar code scanner and an RFID circuit is provided. This circuit uses certain functional blocks for processing both the bar code signals and the RFID signals. As a result, the space and power consumed by the circuit are substantially reduced such that the circuit can be formed to fit a free-standing, hand-held reader device. The circuit also may use a single interface from a hand-held device to central processing unit to process digital signals from both the bar code scanner and the RFID circuit. In addition, in one embodiment, the circuit may also simultaneously process bar code signals and RFID signals.

대표청구항 ▼

[ What is claimed is:] [1.]1. A bar code scanner/RFID circuit for use in a free-standing reader device, and that provides an interrogation signal to an identification tag, receives a data signal from an identification tag, and that provides a digital signal to a processing unit, the circuit comprisi

[ What is claimed is:] [1.]1. A bar code scanner/RFID circuit for use in a free-standing reader device, and that provides an interrogation signal to an identification tag, receives a data signal from an identification tag, and that provides a digital signal to a processing unit, the circuit comprising:a bar code scanner circuit;an RFID circuit;wherein the processing unit is coupled to receive a data acquisition command, and, in response to the data acquisition command, to instruct at least one of the bar code scanner circuit and the RFID circuit to provide the interrogation signal, to receive the data signal, and to transmit the data signal; anda data acquisition circuit which is adapted to receive the data signal from at least one of the bar code scanner circuit and the RFID circuit, to process the data signal into an analog signal and then into the digital signal, and to transmit the digital signal to the processing unit.