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1. 发明授权

US5327241A Video signal processing apparatus for reducing aliasing interference 失效
标题翻译：用于减少混叠干扰的视频信号处理装置
公开(公告)号：US5327241A
公开(公告)日：1994-07-05
申请号：US915551
申请日：1992-07-20
申请人： Atsushi Ishizu , Masaki Tokoi , Yoshio Seki
发明人： Atsushi Ishizu , Masaki Tokoi , Yoshio Seki
IPC分类号： H04N7/015 , H04N5/213
CPC分类号： H04N7/0152
摘要： In a video signal processing apparatus for restoring a signal which has been bandwidth-compressed by offset sub-sampling after restoring an image from sample points of a same field of a sub-sampled signal, a first adder performs an inter-field averaging process from inter-field signals before or after three adjacent fields. A second adder performs an inter-frame averaging process from inter-frame signals. One field difference and one frame difference are detected from the three adjacent inter-field signals thereby switching an output signal of the first adder and an output signal of the second adder in accordance with the magnitudes of the differences thus detected. In this way, aliasing interferences accompanied with bandwidth compression can be detected. By selecting an optimum eliminating filter, aliasing interference due to interfield sub-sampling and aliasing interference due to inter-frame sub-sampling can be eliminated.
摘要翻译：在一个视频信号处理装置中，从副采样信号的相同场的采样点恢复图像之后，通过偏移副采样来恢复被带宽压缩的信号，第一加法器执行场间平均处理，三个相邻场之前或之后的场间信号。第二加法器从帧间信号执行帧间平均处理。从三个相邻的场间信号中检测一个场差和一个帧差，从而根据所检测的差的大小切换第一加法器的输出信号和第二加法器的输出信号。以这种方式，可以检测伴随带宽压缩的混叠干扰。通过选择最佳消除滤波器，可以消除由于场间子采样引起的混叠干扰和由于帧间子采样引起的混叠干扰。

2. 发明授权

US5311297A HDTV to conventional TV signal converting apparatus with non-linear level correction 失效
标题翻译： HDTV与具有非线性电平校正的常规TV信号转换装置
公开(公告)号：US5311297A
公开(公告)日：1994-05-10
申请号：US709234
申请日：1991-06-03
申请人： Yoshio Seki , Atsushi Ishizu , Masaki Tokoi
发明人： Yoshio Seki , Atsushi Ishizu , Masaki Tokoi
IPC分类号： H04N5/202 , H04N7/01 , H04N7/015 , H04N9/64 , H04N9/69
CPC分类号： H04N7/0152 , H04N5/202 , H04N7/0125 , H04N9/642 , H04N9/69
摘要： A television signal converting apparatus receives a high definition television signal which is processed approximately linearly on the transmission and receiving sides and whose transmission only is processed non-linearly. A non-linear level correction circuit is provided, which collectively simultaneously carries out two kinds of non-linear processes, namely, a transmission inverse gamma correction and a CRT gamma correction, which are executed on the transmission side, thus precisely reproducing the signal level of a luminance signal by using a small-scale circuit.
摘要翻译：电视信号转换装置接收在发送和接收侧近似线性处理的高清晰度电视信号，并且其传输仅被非线性处理。提供了一种非线性电平校正电路，它们共同同时执行在发送侧执行的两种非线性处理，即发送反伽马校正和CRT伽马校正，从而精确地再现信号电平通过使用小规模电路的亮度信号。

3. 发明授权

US5168358A Video signal converting apparatus for converting HDTV signal into conventional TV signal 失效
标题翻译：用于将高清电视信号转换为常规电视信号的视频信号转换装置
公开(公告)号：US5168358A
公开(公告)日：1992-12-01
申请号：US712034
申请日：1991-06-07
申请人： Atsushi Ishizu , Yoshio Seki , Masaki Tokoi
发明人： Atsushi Ishizu , Yoshio Seki , Masaki Tokoi
IPC分类号： H04N7/01 , H04N7/015
CPC分类号： H04N7/0152 , H04N7/0125
摘要： A video signal converting apparatus includes: an interpolating circuit for interpolating a non-sampling point from sampling points in a field for restoring an HDTV band-compressed by offset sub-sampling; a first delay element for delaying the interpolated signal by one field period and a second delay element for delaying an output of the first delay element by one field; a median-value selector for selecting a median-value signal from signals in three adjacent fields from the input and output of the two delay elements, and an adder for averaging the output of the first delay element and an output of the median-value selector. Alternatively, the first and second delay elements maybe disposed before the interpolating circuit rather than after the interpolating circuit. Furthermore, a time-access conversion circuit maybe disposed either before the interpolating circuit or after the adder.

4. 发明授权

US5365274A Video signal converting apparatus with reduced processing for aliasing interference 失效
标题翻译：具有减少混叠干扰处理的视频信号转换装置
公开(公告)号：US5365274A
公开(公告)日：1994-11-15
申请号：US61704
申请日：1993-05-13
申请人： Yoshio Seki , Masaki Tokoi , Atsushi Ishizu , Yoichiro Miki
发明人： Yoshio Seki , Masaki Tokoi , Atsushi Ishizu , Yoichiro Miki
IPC分类号： H04N7/01
CPC分类号： H04N7/0125
摘要： A video signal conversion apparatus for converting high definition television signals band-width compressed by offset sub-sampling to a conventional standard television signal while removing aliasing interference caused by offset sub-sampling and using less memory capacity than is conventionally required is provided. The image of the sub-sampled signal is restored from the sampling points in the current field by an intra-field interpolation circuit, and the number of scan lines is reduced to the same number in the standard television signal format by a scan line number conversion circuit. Half of the pixels in the current field are then substituted into the signal for the one previous frame for inter-frame interpolation by a signal selector which alternately selects a signal from the scan line number conversion circuit and a signal from field memories, and a time-base operation for removing aliasing interference at the standard television signal rate is executed.
摘要翻译：提供了一种视频信号转换装置，用于将通过偏移次采样压缩的高清晰度电视信号转换为传统标准电视信号，同时消除由偏移次采样引起的混叠干扰并且使用比传统所需的更少的存储器容量。子采样信号的图像由场内插入电路从当前场中的采样点恢复，并且通过扫描线数转换将扫描线的数量减少到标准电视信号格式的相同数量电路。当前字段中的一半像素被替换为前一帧的信号，用于通过交替地选择来自扫描行号码转换电路的信号和来自场存储器的信号的信号选择器进行帧间插值，并且时间执行用于以标准电视信号速率去除混叠干扰的基地操作。

5. 发明授权

US5155582A Dot crawling interference elimination device and color subcarrier vertical correlation detection device 失效
标题翻译： DOT CRAWLING干扰消除装置和彩色SUBCARRIER垂直相关检测装置
公开(公告)号：US5155582A
公开(公告)日：1992-10-13
申请号：US559066
申请日：1990-07-30
申请人： Masaki Tokoi , Atsushi Ishizu , Kiyoshi Imai
发明人： Masaki Tokoi , Atsushi Ishizu , Kiyoshi Imai
IPC分类号： H04N9/64 , H04N9/79
CPC分类号： H04N9/646 , H04N9/7908
摘要： A dot crawling interference elimination device and a color subcarrier vertical correlation detection device, which comprise a color subcarrier vertical correlation detection device for a video signal, an adaptive three-dimensional Y/C separation unit, and an adaptive notch filter of a color signal band, detect vertical correlation of a color subcarrier in a non-standard signal, such as a signal reproduced from a home VCRs or a special signal reproduced from an optical VDP system, that does not strictly meet the standards of the NTSC system or the PAL system, thereby to discriminate non-standard characteristics of the signal, and eliminate a color signal component, which mixes into a luminance signal when a motion-adaptive Y/C separation is carried out for the non-standard signal, by using an adaptive notch filter that suits a non-standard state of the input image signal.

6. 发明授权

US06661470B1 Moving picture display method and apparatus 失效
标题翻译：运动图像显示方法和装置
公开(公告)号：US06661470B1
公开(公告)日：2003-12-09
申请号：US09381637
申请日：1999-09-27
申请人： Hidehiko Kawakami , Hideaki Kawamura , Kazuo Tomida , Yoshio Watanabe , Hiroaki Fukushima , Masaki Tokoi
发明人： Hidehiko Kawakami , Hideaki Kawamura , Kazuo Tomida , Yoshio Watanabe , Hiroaki Fukushima , Masaki Tokoi
IPC分类号： H04N514
CPC分类号： G09G3/2022 , G09G3/2059 , G09G3/28 , G09G2310/0286 , G09G2320/0261 , G09G2320/0266 , G09G2320/106 , H04N5/145 , H04N5/208 , H04N5/21 , H04N5/66 , H04N5/70 , H04N9/64
摘要： A method for displaying a moving picture having a proper tone by changing a combination of subfields constituting a field of the moving picture, the subfields each having a different weight of luminance, a motion vector indicating a moved direction of the image and a moved quantity thereof is detected from image data, new image data for providing a tone equivalent to a tone to be received by a retina to the retina when the image moves is generated corresponding to the detected motion vector, and the combination of subfields is determined based on the generated new image data.
摘要翻译：一种用于通过改变构成运动图像的场的子场的组合，每个具有不同亮度权重的子场，指示图像的移动方向的运动矢量及其移动量来显示具有适当色调的运动图像的方法从图像数据中检测到，根据检测到的运动矢量产生用于提供与图像移动时的视网膜接收到的视网膜相同的音调的新图像数据，并且基于所生成的子场来确定子场的组合新图像数据。

7. 发明授权

US06380979B1 Scanning line converting circuit and interpolation coefficient generating circuit 失效
标题翻译：扫描线转换电路和内插系数发生电路
公开(公告)号：US06380979B1
公开(公告)日：2002-04-30
申请号：US08886448
申请日：1997-07-01
申请人： Masaki Tokoi , Isao Kawahara , Tomohisa Tagami
发明人： Masaki Tokoi , Isao Kawahara , Tomohisa Tagami
IPC分类号： H04N701
CPC分类号： H04N7/0122 , H04N7/0135
摘要： There is provided a low-cost scanning line converting circuit being capable of properly converting the number of scanning lines for a video signal at various conversion ratios. Under the control of a write control signal generating circuit, an original video signal is written, on a scanning-line basis, in individual line memories. A write operation is performed to each of the line memories based on a clock and a horizontal synchronizing signal on the input side, while a read operation is performed to each of the line memories based on a clock and a horizontal synchronizing signal on the output side. A selecting circuit selects, based on a line select signal, at least one from scanning line signals stored in the individual line memories necessary to generate a post-conversion scanning line signal and outputting the selected scanning line signal. Coefficient multipliers multiply the scanning line signal selectively outputted by interpolation coefficients (1−k) and k and an adder adds up the results of multiplication to output the sum as the post-conversion scanning line signal. A coefficient control circuit and a dividing circuit are capable of generating a coefficient direct signal k in accordance with a ratio for converting the number of signal lines.
摘要翻译：提供了一种能够以各种转换比适当地转换视频信号的扫描行数的低成本扫描线转换电路。在写入控制信号发生电路的控制下，原始视频信号在扫描线上被写入各个行存储器中。基于输入侧的时钟和水平同步信号，对每个行存储器执行写入操作，同时基于输出侧的时钟和水平同步信号对每个行存储器进行读取操作。选择电路基于线选择信号选择存储在生成转换后扫描线信号所必需的各行存储器中的扫描线信号中的至少一个，并输出所选择的扫描线信号。系数乘法器乘以由插值系数（1-k）和k选择性地输出的扫描线信号，并且加法器将相乘结果相加以输出和作为后转换扫描线信号。系数控制电路和分频电路能够根据用于转换信号线数的比率产生系数直接信号k。

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