| 摘要 |
PURPOSE:To arrange reproducing signals dissident in the phase to one channel so as to be applied to a common signal processing circuit by providing the signal processing device to plural reproducers in common further providing a 1F circuit switching the reproducing signals between then and eliminating the phase shift between the signals. CONSTITUTION:A reproducing RF switching circuit 17 selects alternately outputs of heads by a switching pulse formed a detecting pulse being in a prescribed phase relation with the rotating phase of the head. A switching pulse or the like of the circuit 17 is applied to an RAM controller 34 of an interface box 1FB5. The reproduced output of each VTR is arranged to signals D1-D3 shown in Fig. A by the respective circuit 17 and the result is inputted to RAMs 31-33. Suppose that the section of the reproducing signal hatched as shown in figure. Each write pulse W is generated in response to the period selected by the reproducing signal in synchronizing with the head switching pulse and a data in the hatched section is written in the RAM. This data is read by pulses R1-R3, each output is synthesized and a data of one channel continued as shown in Fig. D is outputted from a 1FB5. |
