| 摘要 |
<p>PURPOSE: To carry out an interchange with existing VHS and VCR by containing a horizontal frequency compensator synchronized with a recording stop signal and a gain controller conducting adjustment in response to the rotational speed of a capstan motor. CONSTITUTION: An FH compensator 12 varies the control voltage of a drum motor 22 by conducting a diode D1 in a recording section. A resistor R1 is changed and an FH correction value is adjusted at that time. A gain controller adjusts the control gain of a capstan motor 32 by controlling the input impedance of a comparison circuit 31 by utilizing switches S1-S4, the input impedance of the comparison circuit 31 by using a switch S5 and the feedback impedance of the comparison circuit 31 by utilizing the switch S5 as shown in a Fig. B. The control gain of the capstan motor 32 is increased towards the lower sides in each mode at that time.</p> |
