Optical disk recording and reproducing apparatus for compressed signals

An optical disc recording apparatus comprising:

• first compression means for compressing a first input signal for each of a predetermined block length to generate a first compressed signal which is a series of compressed input signal blocks which intermittently occur;
• second compression means for compressing a second input signal for each of a predetermined block length to generate a second compressed signal which is a series of compressed input signal blocks which intermittently occur;
• an input memory for temporarily storing the compressed input signal blocks of the first and second compressed signals;
• a head unit for recording the compressed input signal blocks of the first and second compressed signals onto an optical disc;
• and
• control means for controlling said head unit to record the compressed input signal blocks read out from the memory onto the optical disc,
• wherein said control means controls said first and second compression means so that the series of compressed input blocks of the second compressed signal occurs not to timely overlap the series of compressed input blocks of the first compressed signal by shifting the timing of blocking for the second input signal from that of blocking for the first input signal by an interval larger than or equal to one compressed signal length (u) to perform the compression operation on the second input signal after the completion of the compression operation on the first input signal and to successively store the compressed input signal blocks of the first and second compressed signals into said input memory;
• wherein said control means controls said head unit to record each compressed input signal block of the second compressed input signal during a non-recording interval between recordings for the compressed input signal blocks of the first compressed signal.