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US 6,784,788 B2Granted
Universal electronic identification tag
AssigneeAvid Marketing, Inc.
InventorsMichael L. Beigel, Robert E. Malm
Life of this patent
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AssigneeAvid Marketing, Inc.
InventorsMichael L. Beigel, Robert E. Malm
Estimating the term…
The universal electronic identification tag is for use with a variety of readers of different designs including a control reader which can be used to control the operations of the universal tag. A reader interrogates a tag by transmitting a carrier. The universal tag comprises a transducer, a modulator connected across the transducer, and a control means. The control means causes the modulator to drive the transducer with a plurality of different message waveforms after interrogation by a reader, the tag identity being embedded in each of the message waveforms. The message waveforms can be transmitted either simultaneously, sequentially, or both ways. A message waveform is comprised of a sequence of contiguous waveform segments, each waveform segment representing the value of an N-bit group, N being an integer. A waveform segment is a periodic signal characterized by the parameters frequency, phase, and amplitude. The waveform segments which represent the values of an N-bit group are differentiated by the values of at least one parameter.
A tag for use with a plurality of readers of different designs, a reader interrogating a tag by transmitting a carrier, the tag comprising:
A tag for use with a plurality of readers, a reader interrogating a tag by transmitting a carrier, the tag comprising:
A tag for use with a plurality of readers, a reader interrogating a tag by transmitting a carrier, the tag comprising:
A tag for use with a plurality of readers, a reader interrogating a tag by transmitting a carrier, the tag comprising:
A tag for use with a plurality of readers of different designs, a tag designed to operate with a particular reader being called an associated tag, a reader interrogating the tag by transmitting a carrier, the tag responding to the reader by emulating the associated tag for the reader, the tag comprising:
A tag for use with a plurality of readers, a reader interrogating a tag by transmitting a carrier, the tag comprising:
A tag for use with a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogating a tag by transmitting a carrier, an associated tag responding to an interrogation with an associated-tag message waveform that can be read by the reader, the tag comprising:
A method for responding to interrogations by a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogation being accomplished by the transmission of a carrier, an associated tag responding to an interrogation with an associated-tag message waveform that can be read by the reader, the method comprising the steps:
A method for responding to interrogations by a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogation being accomplished by the transmission of a carrier, an associated tag responding to an interrogation with an associated-tag message waveform that can be read by the reader the method comprising the steps:
A method for responding to interrogations by a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogation being accomplished by the transmission of a carrier, an associated tag responding to an interrogation with an associated-tag message waveform that can be read by the reader, the method comprising the steps:
A method for responding to interrogations by a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogation being accomplished by the transmission of a carrier, an associated tag responding to an interrogation with an associated-tag message waveform that can be read by the reader, the method comprising the steps:
A method for responding to interrogations by a plurality of readers of different designs, each reader being operable with associated tags, a reader interrogation being accomplished by the transmission of a carrier, an associated tag responding to an interrogation with an associated-tag message waveform, the method comprising the steps:
Dependencies are inferred from the claim text.