发明名称 |
RECORDING AND REPRODUCING DEVICE OF MAGNETIC DISK |
摘要 |
PURPOSE:To eliminate such a case where an operator thinks that malfunction occurs and has distrust by detecting whether or not an information signal is recorded and by displaying the result. CONSTITUTION:A video signal recorded in a magnetic disk A is detected by a magnetic head 5. A control means D switches a changeover switch to a terminal 4b. The video signal detected by the magnetic head 5 is amplified by an amplifier circuit 14, outputted as a video signal by a reproduction processing system 30 and displayed on a cathode ray tube 31. When an information signal is not recorded in the magnetic disk A, the control means D outputs a signal at a low level to a display means G and makes a light emitting diode 22 nonoperable. Thus whether or not an information signal is recorded in the magnetic disk A can be detected and displayed. |
申请公布号 |
JPS60183882(A) |
申请公布日期 |
1985.09.19 |
申请号 |
JP19840039949 |
申请日期 |
1984.03.01 |
申请人 |
SHARP KK |
发明人 |
ADACHI MAKOTO;NAGAYOSHI NORIHIKO |
分类号 |
G11B27/00;H04N5/781;H04N17/06 |
主分类号 |
G11B27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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