| 摘要 |
PURPOSE:To realize the automatic recording for an emphasis processing tape, by preventing a ''presence'' signal from passing through a preemphasis circuit in case an emphasis code is ''presence'' on a reproducing tape, and at the same time, reducing the processing code to ''presence''. CONSTITUTION:A control data detecting circuit 19 detects an emphasis processing code contained in a control data obtained from a reproduced signal. Then switches 5 and 6 are turned to the ''b'' side by an emphasis control circuit 21, and the reproduced signal is delivered to an output terminal 9 with no intervention of a deemphasis circuit 8. Thus a certain code is delivered with no deemphasis processing. A tape recording device 18 turns switches 12 and 13 to the ''b'' side via an emphasis circuit 25 and transmits an input signal to a recording circuit 15 with no intervention of a preemphasis circuit 14. At the same time, the ''presence'' is decided on an emphasis code 27. Then the code 27 is recorded on a tape. Thus the automatic recording is realized for an emphasis processing tape. |
