Digital data demodulator, digital data modulator, and digital data modulator-demodulator

摘要

A digital data demodulator which can reduce a loss of decodable digital data, and increase capability of reproducing digital data inputted through a transmission line even when an error occurs in the transmission line. In the digital data demodulator, a specific pattern detector ( 113 ) detects a specific pattern to be included in a modulation code, from a bit string inputted through a transmission line ( 104 ). A modulation code identifying unit ( 117 ) generates a demodulation data strobe signal ( 119 ) according to a phase of the modulation code including the specific pattern. An error corrector ( 121 ) samples demodulation data ( 109 ) in response to the demodulation data strobe signal ( 119 ) and reproduces the data to the original digital data.