Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Daniel B. Seevers0
Date of Patent
June 23, 2009
Patent Application Number
11254154
Date Filed
October 19, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A feedback device 1 including an interface 2 for receiving a first signal 3 from a point of sale console 4. A processor 5 is responsive to signal 3 for selectively defining a second signal, in the form of an inaudible ultrasonic transmission 6. An output, in the form of an ultrasonic transducer 7, is responsive to processor 5 for propagating transmission 6 to provide only in a predetermined spatially defined transmission zone 8 an audible signal 9 indicative of signal 3. Signal 9 is substantially inaudible outside of zone 8.
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