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    • 2. 发明授权
    • Video signal gradation corrector
    • 视频信号灰度校正器
    • US5289282A
    • 1994-02-22
    • US886801
    • 1992-05-22
    • Toshiaki TsujiAtsuhisa KageyamaKiyoshi Imai
    • Toshiaki TsujiAtsuhisa KageyamaKiyoshi Imai
    • G06T5/40H04N5/20H04N5/14
    • G06T5/009G06T5/40H04N5/20
    • A video signal gradation corrector used in a television receiver or the like for preventing the destruction of the gradation of the black side and the floating of the luminance level of the black side and/or an excessive increase of the luminance level of the white side. The corrector can be realized with a small circuit scale. A histogram operating circuit includes an average luminance level detecting circuit. A constant is subtracted from an output signal of the average luminance level detecting circuit by a subtracter. The result of subtraction is multiplied by a constant by a constant-multiplication circuit. A lower-limit limiter circuit limits an output signal of the constant-multiplication circuit to a signal having a value not smaller than 0. An output signal of the lower-limit limiter circuit is provided as an accumulation start luminance level, thereby enabling a gradation correction in which the floating of the luminance level of the black side and the destruction of the gradation of the black side are prevented.
    • 在电视接收机等中使用的视频信号灰度校正器,用于防止黑色侧的灰度的破坏和黑色的亮度级的漂移和/或白色的亮度级的过度增加。 校正器可以用小电路规模实现。 直方图运算电路包括平均亮度电平检测电路。 通过减法器从平均亮度电平检测电路的输出信号中减去常数。 减法的结果乘以恒常乘法电路的常数。 下限限制器电路将恒倍数电路的输出信号限制为不小于0的信号。下限限制器电路的输出信号被提供为累积开始亮度电平,从而使得能够进行等级 防止了黑色的亮度水平的浮动和黑色的灰度的破坏的校正。
    • 3. 发明授权
    • I-axis detecting circuit provided in color demodulating circuit of TV
receiver
    • I轴检测电路设在电视接收机的彩色解调电路中
    • US5317410A
    • 1994-05-31
    • US836752
    • 1992-02-19
    • Hiroki MontaToshiaki TsujiKiyoshi Imai
    • Hiroki MontaToshiaki TsujiKiyoshi Imai
    • H04N9/64H04N9/66H04N11/14H04N9/65
    • H04N11/146H04N9/64
    • An I-axis phase pulse is allowed to be detected at the sampling point of a chrominance signal with a digitally-implemented circuit. A chrominance signal (sampling frequency f.sub.1) is subsampled by a frequency f.sub.2 (f.sub.1 /N) and subsampling pulses generated in N subsampling pulse generators 10 for N phases, the adjacent ones of the pulses being shifted by one clock (1/f.sub.1) with respect to one another. The subsampled chrominance signal is input to an I-axis determining circuit 17. The I-axis determining circuit operates to detect a maximum value M.sub.1 of a color burst signal (sampling frequency f.sub.1) and the data M.sub.2 after one clock and compare both of the values with each other. Based on the compared result, a selecting signal S.sub.4 is detected for selecting an I-axis phase pulse at the sampling point of the chrominance signal. A selecting circuit 18 selects, as an I-axis phase pulse S.sub.5, a proper one of the N sampling pulse for N phases based on the selecting signal and applies the I-axis phase pulse S.sub.5 to an (N+1)th subsampling circuit 19. The subsampling circuit 19 can provide an I-axis detected output S.sub.3 at the sampling point of the chrominance signal.
    • 使用数字实现的电路可以在色度信号的采样点检测I轴相位脉冲。 色度信号(采样频率f1)由N个子采样脉冲发生器10产生的频率f2(f1 / N)和子采样脉冲进行二次采样,相邻的脉冲被移位一个时钟(1 / f1),与 相互尊重 子采样色度信号被输入到I轴确定电路17.I轴确定电路用于检测彩色同步信号的最大值M1(采样频率f1)和一个时钟之后的数据M2,并将两个 价值观。 基于比较结果,检测选择信号S4,用于在色度信号的采样点选择I轴相位脉冲。 选择电路18根据选择信号选择N相的N个采样脉冲中的适当一个作为I轴相位脉冲S5,并将I轴相位脉冲S5施加到第(N + 1)个子采样电路 子采样电路19可以在色度信号的采样点提供I轴检测输出S3。
    • 8. 发明授权
    • Sensor system and connector used therefor
    • 传感器系统和连接器用于此
    • US06692311B1
    • 2004-02-17
    • US09694302
    • 2000-10-24
    • Takashi KameiKiyoshi ImaiToshinori SatoKazuaki MiyoshiSatoru Shimokawa
    • Takashi KameiKiyoshi ImaiToshinori SatoKazuaki MiyoshiSatoru Shimokawa
    • H01R926
    • H01R9/2458H03K17/94H03K2217/94094
    • A sensor system includes a plurality of sensor bodies arranged aligned and adjacent to each other, each of said sensor bodies being connected to an electric cord including at least a signal line via a connector. Each connector has a power feed terminal, and a detachable fitting for electrically connecting the power feed terminals of the connectors is provided between the connectors. The power supplied to the connector of any of the sensor body through the power feed line in the electric cord is distributed to the power feed terminal of another sensor body through a row of connectors. By this configuration, the number of power feed lines for the overall system can be significantly reduced, and common bodies not distinguished for the main and sub bodies can be used as the sensor bodies, whereby the cost can be reduced and inventory management can be facilitated. Further, when any of the sensor bodies fails, it is possible to simply exchange the failed sensor body only, while maintaining the use of the electric cord that has been used.
    • 传感器系统包括彼此对准并相邻布置的多个传感器主体,每个所述传感器主体经由连接器至少包括信号线连接至电线。 每个连接器具有馈电端子,并且在连接器之间设置用于电连接连接器的馈电端子的可拆卸配件。 通过电线中的馈电线向传感器主体的任何一个的连接器提供的电力通过一排连接器分配到另一传感器主体的馈电端。 通过这种结构,可以显着地减少整个系统的供电线的数量,并且可以将不区分主体和副主体的共同体用作传感器体,从而可以降低成本并且可以促进库存管理 。 此外,当传感器体中的任何一个发生故障时,只要在保持使用已经使用的电线的同时简单地更换故障传感器体。