Digital transmission signal processing system and recording/reproducing system

A receiving apparatus for receiving a transmitted bit-compressed signal and a transmitted control signal for controlling a performance of a recording/reproducing apparatus for recording/reproducing the bit compressed signal, the transmitted bit-compressed signal and the transmitted control signal being transmitted after adding of a parity signal thereto and effecting modulation thereof, comprising:

• reception means for receiving the transmitted bit-compressed signal and the transmitted control signal;
• demodulation means for demodulating the bit-compressed signal and the control signal from said reception means corresponding to the modulation thereof and for outputting a demodulated bit-compressed signal and a demodulated control signal;
• error correction means for correcting errors in the demodulated bit-compressed signal and the demodulated control signal from said demodulation means based upon the parity signal added thereto and for outputting an error-corrected bit-compressed signal to said recording/reproducing apparatus and for outputting an error-corrected control signal;
• and
• control detection means for detecting the error-corrected control signal from said error correction means and for controlling performance in said recording/reproducing apparatus in response to the detected error-corrected control signal.

A receiving apparatus for receiving a transmitted bit-compressed signal being bit-compressed through discrete cosine transform and being transmitted in electric wave form after adding of a parity signal to the bit-compressed signal and effecting QPSK modulation thereof, comprising:

• reception means for receiving the transmitted bit-compressed signal in electric wave form;
• QPSK demodulation means for demodulating the bit-compressed signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed signal;
• error correction means for correcting errors in the demodulated bit-compressed signal from said QPSK demodulation means based upon the parity signal added thereto and outputting an error-corrected bit-compressed signal;
• and
• bit-expansion means for bit-expanding the error-corrected bit-Compressed signal from said error correction means corresponding to the bit-compression through discrete cosine transform.

A receiving apparatus for receiving a transmitted bit-compressed video signal-being bit-compressed through discrete cosine transform and a transmitted bit-compressed audio signal and being transmitted after adding a parity signal to the bit-compressed video signal and the bit-compressed audio signal and effecting QPSK modulation thereof, comprising:

• reception means for receiving the transmitted bit-compressed video signal and the transmitted bit-compressed audio signal;
• QPSK demodulation means for demodulating the bit-compressed video signal and the bit-compressed audio signal from said reception means corresponding to the QPSK modulation thereof and outputting a demodulated bit-compressed video signal and a demodulated bit compressed audio signal;
• error correction means for correcting errors in the demodulated bit-compressed video signal and the demodulated bit-compressed audio signal from said QPSK demodulation means based upon the parity signal added thereto and for outputting an error corrected bit-compressed video signal and an error corrected bit-compressed audio signal;
• and
• bit-expansion means for bit-expanding the error-corrected bit-compressed video signal from said error correction means corresponding to the video bit-compression thereof through discrete cosine transform and for bit-expanding an error corrected bit-compressed audio signal from said error correction means corresponding to the audio bit-compression thereof.