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21. 发明授权

US5315389A Intensity correction device for providing a correction signal for automatically correcting an intensity of a video signal 失效
标题翻译：强度校正装置，用于提供用于自动校正视频信号强度的校正信号
公开(公告)号：US5315389A
公开(公告)日：1994-05-24
申请号：US904214
申请日：1992-06-25
申请人： Yosuke Izawa , Naoji Okumura
发明人： Yosuke Izawa , Naoji Okumura
IPC分类号： G09G5/00 , G06T5/40 , G09G5/06 , G09G5/10 , H04N5/20 , H04N5/57 , H04N5/208
CPC分类号： G06T5/009 , G06T5/40 , H04N5/20
摘要： The invention relates to an intensity correction device for automatically adjusting an intensity of an input video signal by detecting luminance characteristics of the input signal, and provide intensity correction with maintaining clear image by reducing magnitude of the correction signal or by not effecting correction when the luminance level of the input luminance signal is concentrated to a certain luminance level. The intensity correction device includes a histogram memory, a look-up table operating circuit, a look-up table, a maximum value detecting circuit, and an inverter and a multiplier, limiter, or a gain control circuit. By this, when a luminance level of the input video signal is concentrated to a certain luminance level, magnitude of the correction signal can be reduced or made zero. Therefore, by detecting the characteristics of the input image, the intensity of the input video signal can be automatically corrected to the optimal image for providing better picture quality.
摘要翻译：本发明涉及一种强度校正装置，用于通过检测输入信号的亮度特性来自动调节输入视频信号的强度，并且通过减小校正信号的大小或通过在亮度输入亮度信号的电平集中在一定亮度级。强度校正装置包括直方图存储器，查找表操作电路，查找表，最大值检测电路和反相器以及乘法器，限幅器或增益控制电路。由此，当输入视频信号的亮度级别集中在一定亮度级时，校正信号的大小可以减小或为零。因此，通过检测输入图像的特性，可以将输入视频信号的强度自动校正为最佳图像，以提供更好的图像质量。

22. 发明授权

US5097333A Interframe deinterleave switching circuit 失效
标题翻译： INTERFRAME灭火器切换电路
公开(公告)号：US5097333A
公开(公告)日：1992-03-17
申请号：US499350
申请日：1990-08-06
申请人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Toshiro Ohmura
发明人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Toshiro Ohmura
IPC分类号： H03M13/27 , H04N5/04 , H04N7/015 , H04N7/62
CPC分类号： H04N21/4302 , H03M13/2789 , H04N21/8106 , H04N7/0152
摘要： In processing the transfer of digital voice signals, an interframe deinterleave switching circuit automatically switches the interleaving length without requiring any switching signal from the external unit. The circuit detects a voice synchronizing signal, produces a switching signal when the voice synchronizing signal is not detected, and inputs the switching signal to an interframe deinterleaving circuit (I) so that the interleaving length is automatically switched in synchronism therewith.
摘要翻译： PCT No.PCT / JP89 / 01086 Sec。 371日期1990年8月6日 102（e）日期1990年8月6日PCT提交1989年10月24日PCT公布。出版物WO90 / 04905 日期为1990年5月3日。在处理数字语音信号的传送中，帧间去交织切换电路自动切换交织长度，而不需要来自外部单元的任何切换信号。该电路检测语音同步信号，当没有检测到语音同步信号时产生切换信号，并将切换信号输入到帧间解交织电路（I），使得交织长度与其自动切换。

23. 发明授权

US06795588B1 Noise detector, noise detection method, signal processor and signal processing method 失效
标题翻译：噪声检测器，噪声检测方法，信号处理器和信号处理方法
公开(公告)号：US06795588B1
公开(公告)日：2004-09-21
申请号：US09628678
申请日：2000-07-28
申请人： Yutaka Nio , Katsumi Terai , Naoji Okumura , Kazuto Tanaka
发明人： Yutaka Nio , Katsumi Terai , Naoji Okumura , Kazuto Tanaka
IPC分类号： G06K940
CPC分类号： H04N1/409 , G06T5/002 , G06T2207/20192
摘要： A ringing detector detects mosquito noise and ringing for outputting an image signal smoothed by a horizontal/vertical high-pass filter when mosquito noise and ringing are detected while outputting the image signal as such when neither mosquito noise nor ringing is detected, thereby properly correcting the image signal without reducing the texture specific to the image signal also in a portion continuously exhibiting fine details.
摘要翻译：当检测到蚊式噪声和振铃同时输出图像信号时，振铃检测器检测蚊式噪声和振铃以输出由水平/垂直高通滤波器平滑的图像信号，当既没有检测到蚊式噪声也没有振铃时，正确地校正图像信号，而不会在连续呈现精细细节的部分中降低图像信号特有的纹理。

24. 发明授权

US06529176B1 Image display and horizontal speed modulator 失效
标题翻译：图像显示和水平速度调制器
公开(公告)号：US06529176B1
公开(公告)日：2003-03-04
申请号：US09673361
申请日：2000-10-16
申请人： Naoji Okumura , Hiroki Monta , Hideyo Uwabata , Yutaka Nio , Kazuto Tanaka , Yutaka Nishikawa
发明人： Naoji Okumura , Hiroki Monta , Hideyo Uwabata , Yutaka Nio , Kazuto Tanaka , Yutaka Nishikawa
IPC分类号： G09G108
CPC分类号： H04N5/44504 , H04N3/30 , H04N21/42653
摘要： A video signal processing circuit synthesizes a video signal and a graphic signal on the basis of a display switching control signal, inverts a synthesized signal on the time axis for each of a forward scanning period and a backward scanning period, and output a display signal. A speed modulating signal control circuit inverts the binarized display switching control signal on the time axis for each of the forward scanning period and the backward scanning period, expands the pulse width thereof, and feeds the display switching control signal to a speed modulating signal generating circuit. The speed modulating signal generating circuit subjects a display signal to first-order differentiation, inverts the polarity of a differentiated signal in the backward scanning signal, sets a portion, corresponding to the graphic signal, in the differentiated signal on the basis of the display switching control signal at a zero level, and generates a speed modulating signal.
摘要翻译：视频信号处理电路根据显示切换控制信号合成视频信号和图形信号，在正向扫描期间和后退扫描周期中的每个正反转扫描期间对时间轴上的合成信号进行反转，并输出显示信号。速度调制信号控制电路在正向扫描周期和反向扫描期间中的每一个上对时间轴上的二值化显示切换控制信号进行反转，扩大其脉冲宽度，并将显示切换控制信号馈送到速度调制信号发生电路。速度调制信号发生电路对显示信号进行一阶微分，使反向扫描信号中的微分信号的极性反转，根据显示切换在微分信号中设定与图形信号对应的部分控制信号为零电平，并产生速度调制信号。

25. 发明授权

US5394194A Gain control circuit and gradation correcting apparatus 失效
标题翻译：增益控制电路和灰度校正装置
公开(公告)号：US5394194A
公开(公告)日：1995-02-28
申请号：US9878
申请日：1993-01-27
申请人： Yosuke Izawa , Naoji Okumura
发明人： Yosuke Izawa , Naoji Okumura
IPC分类号： H03G3/20 , H04N5/20 , H04N5/57 , H04N5/52
CPC分类号： H04N5/20
摘要： A small scale gain control circuit for controlling gain correction quantity is realized, using the configuration of an inverter, a subtraction circuit, a limiter, and a multiplication circuit. Gain correction quantity is controlled in such a way that in the gradation correcting apparatus a first constant fixes a value beyond which gain correction quantity is zero and a second constant fixes an inclination of the characteristics line.
摘要翻译：使用逆变器，减法电路，限幅器和乘法电路的结构，实现用于控制增益校正量的小型增益控制电路。控制增益校正量，使得在灰度校正装置中，第一常数固定增益校正量为零以上的值，第二常数固定特性线的倾斜度。

26. 发明授权

US5388168A Picture quality improving circuit using a cumulative histogram 失效
标题翻译：使用累积直方图的图像质量改进电路
公开(公告)号：US5388168A
公开(公告)日：1995-02-07
申请号：US84064
申请日：1993-06-30
申请人： Hirohiko Sakashita , Naoji Okumura
发明人： Hirohiko Sakashita , Naoji Okumura
IPC分类号： G06T5/40 , H04N5/20
CPC分类号： G06T5/40 , G06T5/009 , H04N5/20 , G06T2207/10016
摘要： A picture quality improving circuit for automatically obtaining a corrected image by capturing features of the input video signals. The circuit first compares an input luminance signal with a plurality of reference values, measures the results of the comparison by a plurality of counters and obtains a cumulative histogram within a predetermined period of time. Next, the cumulative histogram signals are stored in a latch circuit for a predetermined period of time, and an interpolation circuit determines and outputs a correction signal corresponding to the input luminance signal by interpolating the cumulative histogram. Accordingly, when a large number of dark signals exist in the input luminance signal, the cumulative histogram signals will describe an upwardly projecting graph, and the dark portions of the signal will be extended in a bright direction. Thereby, the picture quality can be improved.
摘要翻译：一种用于通过捕获输入视频信号的特征来自动获得校正图像的图像质量改善电路。电路首先将输入亮度信号与多个参考值进行比较，通过多个计数器测量比较结果，并在预定时间段内获得累积直方图。接下来，将积累的直方图信号存储在锁存电路中预定的时间段，并且内插电路通过内插累积直方图来确定并输出与输入的亮度信号相对应的校正信号。因此，当输入亮度信号中存在大量暗信号时，累积直方图信号将描述向上投影的图形，并且信号的暗部将在明亮方向上延伸。从而可以提高图像质量。

27. 发明授权

US5280345A Jitter correction circuit for reducing jitter components of a luminance signal in video information compression 失效
标题翻译：用于减少视频信息压缩中的亮度信号的抖动分量的抖动校正电路
公开(公告)号：US5280345A
公开(公告)日：1994-01-18
申请号：US863269
申请日：1992-04-03
申请人： Yasuaki Uehara , Naoji Okumura
发明人： Yasuaki Uehara , Naoji Okumura
IPC分类号： H04N5/14 , H04N5/21 , H04N7/015 , H04N9/79 , H04N9/89 , H04N9/64 , H04N5/04
CPC分类号： H04N9/79 , H04N9/89
摘要： A jitter correction circuit includes a first device for detecting a phase difference between a horizontal sync signal in a video signal and a system clock signal locked to burst components of the video signal. A second device serves to subject a first luminance signal in the video signal to phase interpolation to convert the first luminance signal to a second luminance signal. The second luminance signal is selectively stored into a memory to compress the second luminance signal. A third device serves to shift a compressed luminance signal outputted from the memory by a period which is responsive to the phase difference detected by the first device and which is equal to or shorter than one fourth of a 1-clock period of the system clock signal.
摘要翻译：抖动校正电路包括用于检测视频信号中的水平同步信号与被锁定为视频信号的突发分量的系统时钟信号之间的相位差的第一装置。第二装置用于使视频信号中的第一亮度信号进行相位插值，以将第一亮度信号转换为第二亮度信号。第二亮度信号被选择性地存储到存储器中以压缩第二亮度信号。第三装置用于将从存储器输出的压缩亮度信号移位一个响应于由第一装置检测的相位差并且等于或短于系统时钟信号的1个时钟周期的四分之一的周期。

28. 发明授权

US5192996A Video chroma signal processing circuit 失效
标题翻译：视频色度信号处理电路
公开(公告)号：US5192996A
公开(公告)日：1993-03-09
申请号：US788240
申请日：1991-11-05
申请人： Hirohiko Sakashita , Tetsuo Kutsuki , Naoji Okumura
发明人： Hirohiko Sakashita , Tetsuo Kutsuki , Naoji Okumura
IPC分类号： H04N5/14 , H04N9/68 , H04N9/77 , H04N11/04
CPC分类号： H04N9/77
摘要： A video chroma signal processing circuit in which a composite video signal, formed of an analog luminance signal and an analog chrominance signal, is separated into Y and C components and converted into digital codes by AD converters and processed by processing circuits. The outputs of the processing circuits are converted into analog signals again with DA converters to produce a picture image; wherein, it is intended to obtain a wide band of a luminance signal by making efficient use of an AD converter for a chrominance signal and to improve horizontal resolution. The apparent sampling frequency is doubled by sampling the AD converter for a chrominance signal with a phase reverse to that of an AD converter for a luminance signal so as to improve the horizontal resolution of the luminance signal.
摘要翻译：一种视频色度信号处理电路，其中由模拟亮度信号和模拟色度信号形成的复合视频信号被分离成Y和C分量，并由AD转换器转换成数字码并由处理电路进行处理。处理电路的输出再次用DA转换器转换为模拟信号以产生图像; 其目的在于通过有效地利用AD转换器获得色度信号的宽带，提高水平分辨率。通过对与用于亮度信号的AD转换器的相位相反的色度信号的AD转换器采样AD视频采样频率，以提高亮度信号的水平分辨率。

29. 发明授权

US5163053A Audio signal demodulation circuit 失效
标题翻译：音频信号解调电路
公开(公告)号：US5163053A
公开(公告)日：1992-11-10
申请号：US499349
申请日：1990-08-06
申请人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Naoji Okumura , Toshihiro Miyoshi , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
IPC分类号： H04N5/60 , H04B1/10 , H04B14/04 , H04N7/088
CPC分类号： H04N7/088 , H04B14/046
摘要： An audio signal demodulating circuit comprises a counter circuit (11) for detecting the number of samples for which interpolation is to be successively made by counting the output from an error correction circuit (2) and an AND circuit 10 for taking the logical product of the output from the counter circuit and the mute signal generated when synchronization has been lost. If interpolation is to be successively made for m (integer) or more, an audio differential signal is muted using a mute signal so as to remove the signal with greatly deteriorated audio quality. This can remove large audio distortion generated if interpolation is only successively made for error correction when errors successively occur for samples.
摘要翻译： PCT No.PCT / JP89 / 01088 Sec。 371日期1990年8月6日 102（e）日期1990年8月6日PCT提交1989年10月14日PCT公布。出版物WO90 / 04890 日期：1990年5月3日。音频信号解调电路包括计数器电路（11），用于通过对来自纠错电路（2）的输出和AND电路10进行计数来检测要连续进行内插的采样数，取计数器电路输出的逻辑积和同步丢失时产生的静音信号。如果要连续进行m（整数）以上的插补，则使用静音信号使音频差分信号静音，以便消除音频质量大大恶化的信号。这可以消除当针对样本连续发生错误时仅针对纠错连续进行插值时产生的大音频失真。

30. 发明授权

US5138455A Video signal processing circuit for compressed picture insertion function of television receiver 失效
标题翻译：视频信号处理电路，用于电视接收机的压缩图像插入功能
公开(公告)号：US5138455A
公开(公告)日：1992-08-11
申请号：US705040
申请日：1991-05-28
申请人： Naoji Okumura , Hirohiko Sakashita
发明人： Naoji Okumura , Hirohiko Sakashita
IPC分类号： H04N5/265 , H04N5/45
CPC分类号： H04N5/45
摘要： A video signal processing circuit for providing a compressed picture insertion function in a television receiver, whereby a compressed-size picture expressed by one video signal is displayed as an insert within a full-size picture that is expressed by another video signal, by demodulating and combining the video signals, which can be of respectively different television standards, such as the PAL and MUSE standards. The circuit utilizes only one demodulator circuit for one video signal and two demodulator circuits for the other signal. When one of the video signals is in accordance with a broadcast standard such as the MUSE standard, which requires a large-scale demodulator circuit, a significant reduction in overall circuit scale is achieved by comparsion with the prior art, in which two demodulator circuits are required for each of the video signals.
摘要翻译：一种用于在电视接收机中提供压缩图像插入功能的视频信号处理电路，由此将由一个视频信号表示的压缩大小的图像作为插入显示在由另一视频信号表示的全尺寸图像内，通过解调和组合视频信号，其可以分别是不同的电视标准，例如PAL和MUSE标准。该电路仅使用一个解调器电路用于一个视频信号，另外两个解调器电路用于另一个信号。当其中一个视频信号符合诸如需要大规模解调器电路的MUSE标准的广播标准时，通过与现有技术的比较来实现总体电路规模的显着降低，其中两个解调器电路是每个视频信号都需要。

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