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    • 2. 发明授权
    • Multichannel display data generating apparatus, medium, and informational set
    • 多通道显示数据生成装置,介质和信息集
    • US07512962B2
    • 2009-03-31
    • US11129088
    • 2005-05-13
    • Shoichi GotohYoshiki KunoHiroyuki IitsukaMasazumi YamadaRyogo YanagisawaHirotoshi UeharaToshiaki Tsuji
    • Shoichi GotohYoshiki KunoHiroyuki IitsukaMasazumi YamadaRyogo YanagisawaHirotoshi UeharaToshiaki Tsuji
    • G06F3/00G06F13/00H04N5/445
    • H04N21/4305H04L12/40117H04N5/04H04N5/4401H04N5/45H04N21/4316H04N21/434H04N21/4344H04N21/43632
    • A multichannel display data generating apparatus for generating data for displaying AV data on a multiscreen has a plurality of screens for displaying AV data of a plurality of channels, said apparatus comprising: input means for inputting AV data of a plurality of channels being transferred using a transport packet of a transport stream; a smaller number of PCR extracting means for extracting in a time-sharing mode the PCR of a plurality of channels displayed on said plurality of screens than the number of said plurality of screens; the same number of PLL means for establishing PLL synchronization by using said extracted PCR as the number of said plurality of screens; the same number of STC (system time clock) counter means for counting the times of the channels displayed on said plurality of screens by using the oscillation frequency of said PLL means as the number of said plurality of screens; AV decoding means for AV-decoding the AV data of the channels displayed on said multiscreen in AV synchronization with said STC counter means; and output means for outputting said AV-decoded AV data; and wherein said output AV data is displayed on said multiscreen.
    • 一种用于生成用于在多画面上显示AV数据的数据的多声道显示数据产生装置具有用于显示多个声道的AV数据的多个画面,所述装置包括:输入装置,用于输入正在传送的多个频道的AV数据, 传输流的传输分组; 较少数量的PCR提取装置,用于以分时模式提取在所述多个屏幕上显示的多个频道的PCR,而不是所述多个屏幕的数量; 通过使用所述提取的PCR作为所述多个屏幕的数量来建立PLL同步的相同数量的PLL装置; 相同数量的STC(系统时钟)计数器装置,用于通过使用所述PLL装置的振荡频率作为所述多个屏幕的数量来对显示在所述多个屏幕上的频道的时间进行计数; AV解码装置,用于与所述STC计数器装置AV同步地AV解码在所述多画面上显示的频道的AV数据; 以及输出装置,用于输出所述AV解码的AV数据; 并且其中所述输出AV数据显示在所述多画面上。
    • 5. 发明授权
    • Video signal correction system
    • 视频信号校正系统
    • US5351141A
    • 1994-09-27
    • US1529
    • 1993-01-06
    • Toshiaki TsujiAtsuhisa Kageyama
    • Toshiaki TsujiAtsuhisa Kageyama
    • H04N5/14H04N5/20H04N9/68H04N9/77H04N9/78
    • H04N5/20H04N9/68H04N9/77
    • A novel video signal correction system is disclosed, in which an average picture level detection circuit detects the average picture level (APL) of a luminance signal, and a coefficient calculation circuit calculates the amount of correction by the APL circuit. An adder adds an APL-corrected signal to a corrected luminance signal. A limiter circuit, on the other hand, limits the lower limit level of an input luminance signal. A divider circuit divides an output signal of the adder by an output signal of the limiter circuit, and the result is used to correct an input color signal. The color signal is thus capable of being corrected in accordance with the APL while at the same time preventing excessive correction of the color signal with a low brightness input.
    • 公开了一种新颖的视频信号校正系统,其中平均图像电平检测电路检测亮度信号的平均图像电平(APL),并且系数计算电路计算APL电路的校正量。 加法器将APL校正的信号加到校正的亮度信号上。 另一方面,限幅电路限制输入亮度信号的下限电平。 分频器电路将加法器的输出信号除以限幅器电路的输出信号,结果用于校正输入的彩色信号。 因此,彩色信号能够根据APL进行校正,同时防止用低亮度输入对彩色信号的过度校正。
    • 6. 发明授权
    • Television receiver for receiving multi-standards
    • 用于接收多标准的电视接收机
    • US6137537A
    • 2000-10-24
    • US162398
    • 1998-09-28
    • Toshiaki TsujiNaoki KuritaMinoru MiyataToshihiro Miyoshi
    • Toshiaki TsujiNaoki KuritaMinoru MiyataToshihiro Miyoshi
    • H04N5/46H04N5/44H04N5/445H04N5/45
    • H04N5/46
    • A multi-standard television receiver in accordance with the present invention includes a plurality of video signal processing blocks having tristate functions at their output terminals, at least one memory block used in common for a plurality of video signal processing blocks and a video signal processing selection means for selecting one of the video signal processing blocks and independently controlling the output terminals of the video signal processing blocks using elements having a tristate function and can reduce power consumption by working only a selected video signal processing block and stopping the other video signal processing blocks. Further, using elements having a tristate function, possibility of element breakdown at selection and control of the elements can be removed.
    • 根据本发明的多标准电视接收机包括在其输出端子具有三态功能的多个视频信号处理块,用于多个视频信号处理块的共同使用的至少一个存储块和视频信号处理选择 用于选择一个视频信号处理块的装置,并且使用具有三态功能的元件独立地控制视频信号处理块的输出端,并且可以通过仅操作所选择的视频信号处理块并停止其它视频信号处理块来降低功耗 。 此外,使用具有三态功能的元件,可以去除元件的选择和控制时的元件击穿的可能性。
    • 7. 发明授权
    • Video signal gradation corrector which prevents excessive extension of
the dynamic range
    • 视频信号灰度校正器防止动态范围的过度扩展
    • US5294986A
    • 1994-03-15
    • US886927
    • 1992-05-22
    • Toshiaki TsujiAtsuhisa Kageyama
    • Toshiaki TsujiAtsuhisa Kageyama
    • G06T5/40H04N1/407H04N5/20H04N5/14
    • G06F17/18G06T5/009G06T5/40H04N1/4074H04N5/20
    • A gradation corrector for use in a television receiver which can subject a signal at any luminance level to non-linear correction to provide optimum image quality. Memory stores therein luminance histogram of an input signal. On the basis of the data, a circuit detects a total frequency, a circuit detects luminance distribution, and a circuit detects the expanse of the luminance distribution. A circuit calculates a fixed value to be added. Further, a circuit detects a minimum luminance level, and a circuit detects an average luminance level. A circuit calculates an accumulation starting point and a circuit calculates an accumulation stopping point. An adder adds the calculated fixed value to the data in the memory. A circuit accumulates the results in the range from the accumulation starting point to the accumulation stopping point. The accumulation result is stored in memory. A circuit detects the maximum cumulative value, and a circuit normalizes all the data stored in the memory by use of this maximum value. The normalized data are stored in a memory. Thus, the input signal is subjected to optimum normalization by use of the normalized data.
    • 一种用于电视接收机中的灰度校正器,其能够将任何亮度级的信号进行非线性校正,以提供最佳图像质量。 存储器存储输入信号的亮度直方图。 基于数据,电路检测总频率,电路检测亮度分布,并且电路检测亮度分布的扩展。 电路计算要添加的固定值。 此外,电路检测最小亮度电平,电路检测平均亮度电平。 电路计算累积起点,电路计算累积停止点。 加法器将计算的固定值与存储器中的数据相加。 电路将结果积聚在从累积起点到累积停止点的范围内。 累积结果存储在内存中。 电路检测最大累计值,并且电路通过使用该最大值来规范存储在存储器中的所有数据。 归一化数据存储在存储器中。 因此,通过使用归一化数据对输入信号进行最佳归一化。
    • 10. 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。