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    • 1. 发明授权
    • Multi-input video signal processing method and apparatus
    • 多输入视频信号处理方法及装置
    • US07023495B2
    • 2006-04-04
    • US10180486
    • 2002-06-27
    • Yoichiro MikiKenta Sokawa
    • Yoichiro MikiKenta Sokawa
    • H04N5/45
    • H04N7/0122H04N5/44591H04N5/45H04N21/4307H04N21/4316H04N21/4347H04N21/44004H04N21/440218H04N21/440263
    • The video signal processing method of this invention is employed in a video signal processing apparatus that includes a plurality of signal processing parts, each for executing signal processing, for processing two or more digitalized video signals in parallel, and the video signal processing method includes the steps of selecting one or more video signals from the two or more digitalized video signals; and obtaining an object video signal by selecting, from the plurality of signal processing parts, signal processing parts used for signal processing of the selected video signals in accordance with a mode of the object video signal and executing the signal processing in the selected signal processing parts in an order in accordance with the mode of the object video signal.
    • 本发明的视频信号处理方法被用于包括多个信号处理部分的视频信号处理装置,每个信号处理部分用于执行信号处理,用于并行处理两个或多个数字化视频信号,视频信号处理方法包括: 从两个或多个数字化视频信号中选择一个或多个视频信号的步骤; 以及通过从所述多个信号处理部分中选择用于根据所述目标视频信号的模式对所选择的视频信号进行信号处理的信号处理部分并且在所选择的信号处理部分中执行所述信号处理来获得对象视频信号 按照对象视频信号的模式进行。
    • 6. 发明授权
    • Contour restoration apparatus
    • 轮廓修复装置
    • US5668606A
    • 1997-09-16
    • US616283
    • 1996-03-15
    • Takuji OkamotoMasanori HamadaKenta SokawaKazuya UyedaHideaki Yamauchi
    • Takuji OkamotoMasanori HamadaKenta SokawaKazuya UyedaHideaki Yamauchi
    • H04N5/14H04N5/208
    • H04N5/142
    • A contour restoration apparatus has a plurality of delay circuits connected in series. Maximum and minimum value detection circuits detect maximum and minimum values among an input video signal and output signals of the delay circuits. A mean value circuit is used to calculate a mean value of the of the maximum and minimum values. The mean value is subtracted from a delayed signal having a delay time of one-half of a delay time obtained from all the delay circuits. An adder is used to add the result of the subtraction to the delayed signal. A non-linear processing circuit processes the output of said adder and the maximum and minimum values. The non-linear circuit outputs the output signal of the adder, if the output signal of said adder is between the maximum value and the minimum value. A contour extraction circuit multiplies a signal located centrally among the input video signal, the output signals and the signals located before and after the input signal with a predetermined coefficient. An adder adds the multiplied signals. Another adder adds the result of multiplied signal and the centrally located signal. A contour amplitude circuit detects a difference between the maximum and minimum values and outputs a coefficient determined according to the difference detected. A mixer mixes the output of the non-linear processing circuit and the output of the another adder.
    • 轮廓恢复装置具有串联连接的多个延迟电路。 最大值和最小值检测电路检测输入视频信号和延迟电路的输出信号之间的最大值和最小值。 平均值电路用于计算最大值和最小值的平均值。 从具有从所有延迟电路获得的延迟时间的二分之一的延迟时间的延迟信号中减去平均值。 加法器用于将减法的结果加到延迟信号上。 非线性处理电路处理所述加法器的输出和最大值和最小值。 如果所述加法器的输出信号在最大值和最小值之间,则非线性电路输出加法器的输出信号。 轮廓提取电路将位于输入视频信号之间的中心的信号,输出信号和位于输入信号之前和之后的信号以预定系数相乘。 加法器加上相乘的信号。 另一个加法器将乘法信号的结果和位于中心的信号相加。 轮廓振幅电路检测最大值和最小值之间的差异,并输出根据检测到的差异确定的系数。 混频器混合非线性处理电路的输出和另一加法器的输出。