End of communication detection
First Claim
1. An apparatus, comprising:
- a carrier signal recovery circuit configured and arranged to receive an encoded signal and to respond bydetermining and outputting a carrier signal of the encoded signal, andgenerating and outputting a second signal that is out of phase with the carrier signal; and
circuitry coupled to the carrier signal recovery circuit and configured and arranged to decode the encoded signal as a function of the encoded signal and the carrier signal output by the carrier signal recovery circuit and to detect an indication of an end of a communication in the encoded signal as a function of the encoded signal and the second signal by sampling values of the second signal at times relative to an edge of the encoded signal being received.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for detecting the end of a communication is disclosed. The apparatus includes an interface circuit for receiving an encoded signal and a carrier signal recovery circuit coupled to an output of the interface circuit. The carrier signal recovery circuit is configured to output a carrier signal of the encoded signal and a second signal that is out of phase with the carrier signal. The apparatus also includes a decoding circuit configured to decode the encoded signal as a function of both the encoded signal and the carrier signal output by the carrier signal recovery circuit. The apparatus also includes a detection circuit configured to detect an indication of an end of a communication in the encoded signal as a function of both the encoded signal and the second signal.
23 Citations
19 Claims
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1. An apparatus, comprising:
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a carrier signal recovery circuit configured and arranged to receive an encoded signal and to respond by determining and outputting a carrier signal of the encoded signal, and generating and outputting a second signal that is out of phase with the carrier signal; and circuitry coupled to the carrier signal recovery circuit and configured and arranged to decode the encoded signal as a function of the encoded signal and the carrier signal output by the carrier signal recovery circuit and to detect an indication of an end of a communication in the encoded signal as a function of the encoded signal and the second signal by sampling values of the second signal at times relative to an edge of the encoded signal being received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of wireless data communication, comprising:
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receiving over an antenna a wireless signal; determining, in response to receiving the wireless signal, a carrier signal of an encoded signal; phase shifting the carrier signal to produce a second signal that is out of phase with the carrier signal; decoding the encoded signal as a function of the encoded signal and the carrier signal; and detecting whether or not the encoded signal includes an indication of an end of a communication in the encoded signal by comparing the second signal with the encoded signal. - View Dependent Claims (19)
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Specification