Optical communications – Receiver
Reexamination Certificate
2011-01-25
2011-01-25
Vanderpuye, Ken N (Department: 2613)
Optical communications
Receiver
C398S104000, C398S203000
Reexamination Certificate
active
07877024
ABSTRACT:
According to one embodiment, an infrared signal decode circuit includes: a comparator; a correlation signal generator generating a sum of a first detection signal and a second detection signal as a correlation signal, the first detection signal being obtained by performing an absolute value calculation on a first correlation signal, the second detection signal being obtained by performing an absolute value calculation on a second correlation signal, the first correlation signal corresponding to a correlation between a binary signal and a first reference signal with a frequency substantially identical to a base frequency of a subcarrier of an infrared signal, the second correlation signal corresponding to a correlation between the binary signal and a second reference signal with a phase that differ from a phase of the first reference signal by 90 degrees; and a decoder binarizing the correlation signal generated by the correlation signal generator.
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Chiba Norikatsu
Iwata Shigeyasu
Yamamoto Toshifumi
Kabushiki Kaisha Toshiba
Ngo Tanya
Patterson & Sheridan LLP
Vanderpuye Ken N
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