发明名称 TWO DIMENSION DIGITAL FILTER DEVICE
摘要 PURPOSE:To achieve a filter device in which ''fog'' effect can be given to a PCM color video signal continuously, by constituting a circulation type digital filter through the use of secondary correlation of subcarrier wave of PCM color video signals. CONSTITUTION:Either one of video signals applied to terminals 5 and 6 is selected at a horizontal filter circuit 1, the circuit 1 is operated with the horizontal control signal HC from a terminal 7 and the clock from a terminal 9, and an output (m) is applied to a vertical filter circuit 2. On the other hand, with the input of a horizontal delay circuit 3, the input video signal not selected with the input of the horizontal filter circuit 1 is delayed by the total delay time of the horizontal filter circuit 1 and the vertical filter circuit 2 and outputted to terminals 12, 13 from OUT1 or OUT2. The vertical control signal VC from a terminal 8 is delayed by the delay amount in the circuit 1 and applied to the circuit 2, and in this case, the circuit 2 is operated with the signal VC from the circuit 3. Thus, two video signals can easily be synthesized to achieve ''fog'' effect.
申请公布号 JPS5769985(A) 申请公布日期 1982.04.30
申请号 JP19800147881 申请日期 1980.10.21
申请人 CHIYUUBU NIPPON HOUSOU KK;MATSUSHITA DENKI SANGYO KK 发明人 USUI EIJI;WATANABE TOSHIROU;SUZUKI AKIRA;SUZUKI YASUO
分类号 H04N9/74;H04N5/262;H04N11/04 主分类号 H04N9/74
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