Motorola Corporation

American Express Travel Related Services Company, Inc.

John Raymond Nelson

Don Reginald Holcomb

Steve T Chiappetti

James Robert Shaner

Error-testing of merchant messages to be used with point-of-sale (POS) devices is performed by an automated system that receives a formatted message to be tested from a merchant or an agent of the merchant, performs a computer-implemented evaluation of the message according to predefined message-validation rules to detect one or more errors, and notifies the merchant or the agent of evaluation results. The evaluation results include a listing of each detected error, if any.

System and method for performing automated testing of a merchant message

A transponder including a receiver and a transmitter controlled by the output of the receiver, with the receiver including a first phase locked loop with a mixer and a voltage controlled oscillator supplying an output to a second phase locked loop including a switchable frequency divider connected to supply a low side injection signal to the mixer of the first loop in the first mode of operation and a high side injection signal to the mixer in the second mode of operation.

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Scottsdale, AZ, United States of America

John Raymond Nelson