| 摘要 |
PURPOSE:To improve the recording density, by recording the sound signal with time-compressing at the period of fields corresponding to the picture signal recording tracks or bands and outputting the restored sound at a time expanding section together with a still picture. CONSTITUTION:The picture signal and the time-compressed sound signal are recorded at fields corresponding to tracks or bands of picture signal recording with an identification signal in a picture reproducer 1 such as a VTR and a video disc. This identification signal is detected at a detecting circuit 4, and when the readout field is a picture signal field, a blanking circuit 6 stops its function and when the sound signal field, a latch circuit 5 is controlled so as to close a keying circuit 9. The sound signal through the keying circuit 9 is time- expanded at an A/D converter 10, a memory 11, and a D/A converter 12 and outputted together with a picture signal reproduced repetitively. |
