Wireless communications devices, methods of processing a wireless communication signal, wireless communication synchronization methods and a radio frequency identification device communication method
First Claim
1. A wireless communication device comprising:
- an antenna configured to receive electromagnetic energy corresponding to a wireless communication signal outputted from a reader and to output electrical energy corresponding to the received electromagnetic energy;
communication circuitry coupled with the antenna and configured to sample the electrical energy to process the wireless communication signal;
synchronization circuitry coupled with the antenna and the communication circuitry and configured to generate a clock signal to control sampling of the electrical energy by the communication circuitry;
wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal responsive to a plurality of transitions of the electrical energy during a first data period; and
wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal during a second data period including generating at least one of the transitions independent of transitions of the electrical energy.
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Accused Products
Abstract
A wireless communication device includes an antenna configured to receive electromagnetic energy corresponding to a wireless communication signal outputted using an interrogator and to output electrical energy corresponding to the received electromagnetic energy, communication circuitry coupled with the antenna and configured to sample the electrical energy to process the wireless communication signal, synchronization circuitry coupled with the antenna and the communication circuitry and configured to generate a clock signal to control sampling of the electrical energy using the communication circuitry, wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal responsive to a plurality of transitions of the electrical energy during a first data period and wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal during a second data period including generating at least one of the transitions independent of transitions of the electrical energy.
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Citations
38 Claims
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1. A wireless communication device comprising:
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an antenna configured to receive electromagnetic energy corresponding to a wireless communication signal outputted from a reader and to output electrical energy corresponding to the received electromagnetic energy; communication circuitry coupled with the antenna and configured to sample the electrical energy to process the wireless communication signal; synchronization circuitry coupled with the antenna and the communication circuitry and configured to generate a clock signal to control sampling of the electrical energy by the communication circuitry; wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal responsive to a plurality of transitions of the electrical energy during a first data period; and wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal during a second data period including generating at least one of the transitions independent of transitions of the electrical energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless communication device comprising:
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an antenna configured to receive a wireless communication signal comprising encoded data in a biphase format having one transition for a first digital value and a plurality of transitions for a second digital value; communication circuitry configured to sample the encoded data; an edge detector configured to generate a plurality of pulses responsive to the transitions of the encoded data; an oscillator coupled with the edge detector and configured to output a signal responsive to the pulses to control sampling of the encoded data by the communication circuitry, wherein the oscillator is configured to output the signal having a frequency which is greater than a data rate of the encoded data and is an integer multiple of the data rate of the encoded; and wherein the oscillator is configured to generate some of a plurality of transitions in the signal as a result of the transitions in the encoded data and to generate others of the transitions in the signal independent of the transitions in the encoded data. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A wireless communication device comprising:
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an antenna configured to receive a wireless communication signal comprising encoded data in a biphase format having one transition for a first digital value and a plurality of transitions for a second digital value; communication circuitry configured to sample the encoded data; and synchronization circuitry comprising; an edge detector configured to generate a plurality of pulses responsive to the transitions of the encoded data; an oscillator coupled with the edge detector and configured to output a signal responsive to the pulses to control sampling of the encoded data by the communication circuitry; a flip-flop configured to provide a clock signal; and an inverter configured to invert the signal outputted from the oscillator and to apply the inverted signal to a clear input of the flip-flop to provide the clock signal having a plurality of rising edges at respective beginnings of data periods of the encoded data.
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35. A wireless communication device comprising:
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an antenna configured to receive a wireless communication signal comprising encoded data in a biphase format having one transition for a first digital value and a plurality of transitions for a second digital value; communication circuitry configured to sample the encoded data; an edge detector configured to generate a plurality of pulses responsive to the transitions of the encoded data; an oscillator coupled with the edge detector and configured to output a signal responsive to the pulses to control sampling of the encoded data by the communication circuitry, wherein the oscillator is configured to output the signal having a frequency which is greater than a data rate of the encoded data and is an integer multiple of the data rate of the encoded data; and wherein the edge detector and the oscillator are electrically isolated from one another during an absence of transitions.
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36. A wireless communication device comprising:
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an antenna configured to receive a wireless communication signal comprising encoded data in a biphase format having one transition for a first digital value and a plurality of transitions for a second digital value; communication circuitry configured to sample the encoded data; an edge detector configured to generate a plurality of pulses responsive to the transitions of the encoded data; an oscillator coupled with the edge detector and configured to output a signal responsive to the pulses to control sampling of the encoded data by the communication circuitry, wherein the oscillator is configured to output the signal having a frequency which is greater than a data rate of the encoded data and is an integer multiple of the data rate of the encoded data; and synchronization circuitry including the edge detector and the oscillator, and wherein the synchronization circuitry is configured to provide a clock signal to be applied to the communication circuitry and to output the clock signal having a predefined value during an absence of encoded data.
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37. A wireless communication device comprising:
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an antenna configured to receive a wireless communication signal comprising encoded data in a biphase format having one transition for a first digital value and a plurality of transitions for a second digital value; communication circuitry configured to sample the encoded data; an edge detector configured to generate a plurality of pulses responsive to the transitions of the encoded data; an oscillator coupled with the edge detector and configured to output a signal responsive to the pulses to control sampling of the encoded data by the communication circuitry, wherein the oscillator is configured to output the signal having a frequency which is greater than a data rate of the encoded data and is an integer multiple of the data rate of the encoded data; and wherein the oscillator is configured to output the signal having transitions corresponding to the pulses. - View Dependent Claims (38)
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Specification