| 摘要 |
<p>PURPOSE:To realize CM skip causing no missing of program. CONSTITUTION:When a stereo signal is detected from a sound signal delivered to a stereo signal detecting means 2, a microcomputer 6 turns a switch 4 ON to record a soundless signal on the normal sound track of a magnetic tape 8 and a high fidelity sound signal on a high fidelity sound recording track. At the time of reproduction, high fidelity sound signal is fed to a high fidelity sound detecting means 9 and a detection signal Sh' goes 'H' and fed to the microcomputer 6. When a normal sound signal is fed to a normal sound detecting means 11 and a soundless signal is detected, a detection signal Sn' goes 'L' and fed to the microcomputer 6. The microcomputer 6 makes a decision that a CM is undergoing only during the interval when 'H' level of detection signal Sh' and 'L' level of Sn' are detected and delivers a quick feed control command to a capstan servo circuit 12.</p> |
