发明名称 METHOD FOR DETECTING NON-RECORDED PART OF VIDEO TAPE
摘要 <p>PURPOSE:To omit specific processing such as the recording of a cue signal, to use voices for a VTR for monophonic recording and to execute the program searching of a recording part, by detecting whether the level change of a luminance signal is generated or not or there is a synchronous signal or not in a reproduced video signal outputted from the VTR. CONSTITUTION:When tapes TA, TB in which programs PA, PB are recorded are automatically and continuously reproduced to a television receiver 4 alternately by VTRs A, B, both the tapes TA, TB are set up to the program searching state, and when a reproducing start signal is outputted from a 24-hour timer 20 to a reproducing command signal output circuit 14, the VTR A starts the reproducing and the program PA is reproduced to the television receiver 4. After completion of reproducing, a non-recorded part detecting circuit 15 detects the completion of the reproducing of the program PA, outputs a ''High'' signal to a stop command signal output circuit 12, a VTR output switching circuit 30 and a reproducing command signal output circuit 24 to stop the VTR A, and turns a VTR output alternation switch 30 to start the reproducing of the VTR B.</p>
申请公布号 JPS5922254(A) 申请公布日期 1984.02.04
申请号 JP19820131101 申请日期 1982.07.29
申请人 NEC HOME ELECTRONICS KK 发明人 NAKAYABU MASAKI
分类号 G11B15/02;G11B15/087;G11B27/02;G11B27/024;G11B27/22;G11B31/00 主分类号 G11B15/02
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