| 摘要 |
PURPOSE:To simplify the circuit assembly structure, and also, to exactly detect a recorded track by setting complementarily power sources of a recording circuit part and a recorded detecting circuit part to a feeding state, respectively. CONSTITUTION:As for a recording circuit part 16 extending from modulating circuit 1, 2 to a recording amplifier, 4 and a circuit part 17 of a recorded detecting circuit 12 and a reproducing circuit 9 from a reproducing amplifier 8, switches 18, 19 are interposed and installed to the respective power source circuit, and both the switches 18, 19 are brought to an ON/OFF control complementarily by a system controller 11. In such a way, the recording circuit part 16, and the circuit part 7 containing the recorded detecting circuit 12 are formed to a shape of one substrate and structure in which they are placed adjacently, and also, to a structure of a usual power source circuit pattern array, and a circuit shield, and an erroneous unrecorded track detection can be prevented.
|
