Reader and response control system for discrimination between multiple surface acoustic wave identification tags and method of operation thereof
First Claim
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1. A system for discriminating coded responses from multiple SAW identification tags, comprising:
- a SAW tag reader subsystem that detects coded responses from said tags to an interrogation pulse; and
a coded response analyzing subsystem, coupled to said SAW tag reader subsystem, that employs signal processing techniques to separate portions of said coded responses and generates possibilities for remaining portions of said coded responses.
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Abstract
The present invention provides a system for discriminating between coded responses from multiple SAW identification tags and a method of operating such system. In one embodiment the system provides for (1) a SAW tag reader subsystem that detects coded responses from the tags to an interrogation pulse; and (2) a coded response analyzing subsystem, coupled to the SAW tag reader subsystem, that employs signal processing techniques to separate portions of the coded responses and generates possibilities for remaining portions of the coded responses.
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Citations
24 Claims
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1. A system for discriminating coded responses from multiple SAW identification tags, comprising:
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a SAW tag reader subsystem that detects coded responses from said tags to an interrogation pulse; and
a coded response analyzing subsystem, coupled to said SAW tag reader subsystem, that employs signal processing techniques to separate portions of said coded responses and generates possibilities for remaining portions of said coded responses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method to discriminate between coded responses from multiple SAW identification tags, comprising:
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detect coded responses to an interrogation pulse from said tags with a SAW tag reader subsystem; and
separate portions of said coded responses and generate possibilities for remaining portions of said coded responses by employing signal processing techniques with a coded response analyzing subsystem coupled to said SAW tag reader subsystem. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of operating a system for discriminating between coded responses from multiple SAW identification tags, comprising:
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detecting coded responses to an interrogation pulse from said tags with a SAW tag reader subsystem; and
separating portions of said coded responses and generating possibilities for remaining portions of said coded responses by employing signal processing techniques with a coded response analyzing subsystem coupled to said SAW tag reader subsystem. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A system for verifying a coded response by a SAW identification tag to an interrogation pulse, comprising:
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a pulsetrain generating subsystem that generates a pulsetrain that is a time-reversed form of said coded response; and
a SAW tag reader subsystem, coupled to said pulsetrain generating subsystem, that receives a pronounced pulse from said tag that approximates said interrogation pulse.
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Specification