Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2006-05-09
2006-05-09
Dildine, R. Stephen (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S774000, C714S780000, C370S207000
Reexamination Certificate
active
07043680
ABSTRACT:
A receiving apparatus includes a demodulation circuit which estimates a transfer function of a reception signal in which a time domain has been converted into a frequency domain and demodulates the reception signal according to a demodulation method corresponding to the estimated transfer function, a reliability determining circuit which determines the reliability of the demodulation signal based on the transfer function estimated by the demodulation circuit, a variation detecting circuit which detects a variation amount of the demodulation signal on a frequency base, time base, a de-mapping circuit which subjects the demodulation signal to a de-mapping process and in which the contents of the de-mapping process are changed according to the result of determination in the reliability determining circuit and the result of detection in the variation detecting circuit, an error correction circuit which makes error correction based on the signal subjected to the de-mapping process.
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