PCM signal reproducing/recording apparatus

A PCM signal recording apparatus for recording PCM data on a recording medium in which PCM data and N-blocks of sub-code data are received from a reproducing device which reproduces said PCM data, and said N-blocks of sub-code data prepared by recording N-blocks of identical sub-code data repeatedly N-times in order to add auxiliary information to said PCM data and produces at least N flags indicative of whether said N-blocks of sub-code data are respectively correct, comprising:

• reception means for receiving said N-blocks of sub-code data and said N flags;
• decision means for deciding whether said N flags received by said reception means indicate whether said N-blocks of sub-code data are respectively correct;
• and
• recording means for recording at least said PCM data and said N-blocks of sub-code data;
• said recording means being provided for replacing sub-code data which is decided as being erroneous by said decision means, among said N-blocks or sub-code data received by said reception means, with sub-code data which is decided as being correct by said decision means and for recording sub-code data which is decided as being correct by said decision means repeatedly M-times, where M.ltoreq.N and where M and N are integers.