| 摘要 |
<p>The disclosure relates to a playback equalizing circuit of a digital magnetic recording and reproducing apparatus including a signal processing unit 50 for equalizing, delaying and waveform-shaping a signal picked-up from a magnetic tape 10 via a playback head 11, a signal outputting unit 60 for comparing a signal processed in the signal processing unit 50 and a predetermined reference signal and outputting the comparison, and a reference signal controlling unit 70 for responding to the level of the picked-up signal and controlling the reference signal in a variable-speed playback mode. The circuit responses to the level variation of a playback signal and controls a reference voltage to improve playback characteristics during such variable-speed reproducing as a high-speed search. <IMAGE></p> |
