REPRODUCTION DEVICE

PROBLEM TO BE SOLVED: To enable the number of erroneous words which can be corrected by an error correcting circuit to be increased and to enhance reliability of the device as a whole by specifying a position of an erroneous word comprised in a block to be inputted to the error correcting circuit. SOLUTION: When a pattern out of a regulation by a digital modulation system of a regenerative signal (a) exists in this regenerative signal (a), this pattern is detected as an erroneous pattern, and an error detecting signal (c) is outputted to an error flag generator 6 by an erroneous pattern detector 1. In the error flag generator 6, the error detecting signal (c) and an output word (f) of a demodulator 5 are made to correspond to each other, and whether or not an error exists in the demodulator output word (f) is checked by using the error detecting signal (c) corresponding to each demodulator output word (f). If the error exists, an error flag (g) for showing that the demodulator output word (f) corresponding to this error correcting signal (c) is the erroneous word is outputted to the error correcting circuit 7 for a period of one word clock.