RFID decoding subsystem with decode module
First Claim
Patent Images
1. A radio frequency identification (RFID) decoding subsystem comprises:
- pre-decode module coupled to process down-converted RFID signals into pre-decoded baseband data; and
decode module coupled to;
enable a counting process based on the pre-decoded baseband data to produce a count resultant; and
compare the count resultant with a threshold at a data bit interval to produce decoded RFID data.
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Abstract
A radio frequency identification (RFID) decoding subsystem includes a pre-decode module and a decode module. The pre-decode module is coupled to process down-converted RFID signals into pre-decoded baseband data. The decode module is coupled to: enable a counting process based on the pre-decoded baseband data to produce a count resultant; and compare the count resultant with a threshold at a data bit interval to produce decoded RFID data.
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Citations
14 Claims
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1. A radio frequency identification (RFID) decoding subsystem comprises:
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pre-decode module coupled to process down-converted RFID signals into pre-decoded baseband data; and decode module coupled to; enable a counting process based on the pre-decoded baseband data to produce a count resultant; and compare the count resultant with a threshold at a data bit interval to produce decoded RFID data. - View Dependent Claims (2, 3, 4, 5)
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6. A radio frequency identification (RFID) decoding subsystem comprises:
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pre-decode module coupled to process down-converted RFID signals into pre-decoded baseband data; and decode module coupled to; sample the pre-decoded baseband data at a rate greater than a data rate to produce at least a first decision metric and a second decision metric per data bit interval; compare the first and second decision metrics; when the first and second decision metrics substantially match, produce a first decoded value; and when the first and second decision metrics do not substantially match, produce a second decoded value. - View Dependent Claims (7, 8, 9, 10)
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11. A radio frequency identification (RFID) decoding subsystem comprises:
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pre-decode module coupled to process down-converted RFID signals into limited in-phase component signals and limited quadrature component signals; and decode module coupled to; mix the limited in-phase component signals with a reference oscillation to produce mixed in-phase component signals; mix the limited quadrature component signals with a quadrature reference oscillation to produce mixed quadrature component signals; and process the mixed in-phase component signals and the mixed quadrature component signals to produce decoded RFID data, wherein the reference oscillation and the quadrature reference oscillation are based on rate of encoded RFID data. - View Dependent Claims (12, 13, 14)
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Specification