Radio frequency identification device power-on reset management
First Claim
1. A radio frequency identification (RFID) tag, comprising:
- an inlay;
an antenna structure supported by the inlay;
a processing circuit coupled to the antenna; and
a power-on reset circuit coupled to the processing circuit, the power-on reset circuit comprising an independent current circuit to provide a current substantially independent of a supply voltage, a dependent current circuit to provide a current substantially dependent on the supply voltage, and an output circuit to provide a power-on reset indication based on a comparison between the current substantially dependent on the supply voltage and the current substantially independent of the supply voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
Apparatus, systems, and methods may include providing a power-on reset function to many types of receiving circuitry, including radio frequency identification (RFID) tag processing circuitry. Thus, the power-on reset function may be realized by applying a supply voltage to a power-on reset circuit coupled to RFID tag processing circuitry. Operations may include sensing a first current substantially independent of the supply voltage, sensing a second current substantially dependent on the supply voltage, and indicating a power-on reset condition based on a comparison between the first current and the second current. Additional apparatus, systems, and methods are disclosed.
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Citations
25 Claims
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1. A radio frequency identification (RFID) tag, comprising:
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an inlay; an antenna structure supported by the inlay; a processing circuit coupled to the antenna; and a power-on reset circuit coupled to the processing circuit, the power-on reset circuit comprising an independent current circuit to provide a current substantially independent of a supply voltage, a dependent current circuit to provide a current substantially dependent on the supply voltage, and an output circuit to provide a power-on reset indication based on a comparison between the current substantially dependent on the supply voltage and the current substantially independent of the supply voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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applying a supply voltage to a power-on reset circuit coupled to a processing circuit of a radio frequency identification (RFID) tag; sensing a first current substantially independent of the supply voltage; sensing a second current substantially dependent on the supply voltage; and indicating a power-on reset condition based on a comparison between the first current and the second current. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An article comprising a machine-readable memory containing thereon instructions which, if executed by mask making machinery as instructions for processing a semiconductor wafer, an integrated circuit will result on the wafer, the integrated circuit comprising:
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an independent current circuit to provide a current substantially independent of a supply voltage; a dependent current circuit to provide a current substantially dependent on the supply voltage; at least a portion of a radio frequency identification (RFID) circuit; and an output circuit to provide a power-on reset indication to the at least a portion of the RFID circuit based on a comparison between the current substantially dependent on the supply voltage and the current substantially independent of the supply voltage. - View Dependent Claims (23, 24, 25)
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Specification