Patent ID: 8482389

Claim:
A method of operating a reading device, the method performed by the reading device and comprising: receiving, when the reading device in a test mode, a message according to a reading device-processor interface protocol, wherein the message comprises a preamble, a payload storing a data and a header including a type field, a code field and a length field, and wherein the test mode is used for performing a test certification including a receive sensitivity test of the reading device, wherein an air interface (A/I) protocol is used for receiving the test certification; identifying the type field of the header to determine whether a value of the type field includes a specific value indicating the reading device in the test mode; and performing a first operation or a second operation according to the value of the type field, wherein, when the type field includes the specific value, the first operation is performed, the first operation comprising: extracting, from the payload, the data corresponding to the air interface (A/I) protocol; and transmitting, to a tag device, the extracted data without modification via an A/I unit of the reading device, and wherein, when the type field does not include the specific value, the second operation is performed, the second operation comprising: transmitting, to a processor, a result code indicating that the reading device is not in the test mode.