| 摘要 |
PURPOSE:To achieve small-sized and low-cost analog magnetic recording and reproduction of binary data, by setting changing point information of a reference signal as a binary data recording signal. CONSTITUTION:When output ports PO-0 or PO-1 go to high level ''1'' indicating recording of data 0 or 1, an output pulse of an oscillator 41 is counted with a NOR gate 45 and a counter 42. A signal of the output port PO-1 is applied to a level data ROM as a data group indication signal, a readout address of an ROM43 is incremented at each count of the counter 42 and the readout data are renewed. A device 30 renews an sets ''1'' to the PO-0 or PO-1 in response to the state of the data bit with the output ''1'' of the AND gate 46. The readout data of the ROM43 is converted into an analog voltage at a D/A converter 44 and applied to an analog magnetic recorder 50. |
