| 摘要 |
PURPOSE:To secure the interchangeability between analog and digital disks by performing recording with mixture of analog and digital recording tracks and at the same time recording the frequency of the digital signal with no synchronism secured with a video signal. CONSTITUTION:The synchronizing signals are supplied to VTR1 and 2 from PCM recording/reproducing devices 3 and 4, and these VTR1 and 2 supply the reproduction signals to reproducers 3 and 4. The digital signals having the sampling frequency 44 having 100kHz and 16 quantization bits and extracted from reproducers 3 and 4 are supplied to a digital signal processing circuit 6 which is controlled by a controller 7. While the FM-modulated signal is delivered to a terminal 8a of a switch circuit 8 from the circuite 6. At the same time, a VTR9 supplies the reproduction signal given from a magnetic tape to an analog signal processing circuit 10 which is controlled by the controller 7. Then the FM-modulated signal is delivered to a terminal 8b from the circuit 10. As a result, both digital an analog recording tracks are mixed on the same side of a disk 12. |
