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公开(公告)号：EP0617551A1
公开(公告)日：1994-09-28
申请号：EP94302030.5
申请日：1994-03-22
发明人： Uwabata, Hideyo , Kageyama, Sadashi , Hayashi, Takaya , Ogata, Yasuyo , Kisoda, Akira , Hayashi, Kenichiro , Handa, Koji , Yasumoto, Yoshio
CPC分类号： H04N7/015 , H04N5/211 , H04N5/4401
摘要： A transmitter transmits a composite video signal and a multiplex signal on video carrier in a quadrature modulation method. A receiver synchronously detects an incoming signal with two orthogonal axes and separates the composite video signal from the multiplex signal to separately demodulate them. A crosstalk eliminator circuit to which the separately demodulated composite video signal and multiplex signal are supplied is connected in series with the ghost eliminator to eliminate ghost of the multiplex signal after eliminating crosstalk from the composite video signal to the multiplex signal. A waveform-equalized signal is obtained by adding a signal of only an inverse characteristic of crosstalk from the multiplex signal to the composite video signal with a decoded video signal. A non-linear extractor extracts non-linear crosstalk from the composite video signal, thereby obtaining a waveform-equalized multiplex signal by subtracting the non-linear crosstalk from the composite video signal to the multiplex signal from it.
摘要翻译： 发射机以正交调制方式在视频载波上发送复合视频信号和复用信号。 接收机以两个正交轴同步检测输入信号，并将复合视频信号与多路复用信号分离开来，以单独解调它们。 单独解调的复合视频信号和多路复用信号所提供的串扰消除器电路与重影消除器串联连接，以消除从复合视频信号到复用信号的串扰后的多路复用信号的重影。 通过将具有来自多路复用信号的串扰的逆特性的信号与解码的视频信号相加，从而获得波形均衡信号。 非线性提取器从复合视频信号中提取非线性串扰，从而通过从复合视频信号减去非线性串扰到多路复用信号来获得波形均衡的多路复用信号。
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公开(公告)号：EP1689139A3
公开(公告)日：2007-09-12
申请号：EP06002084.9
申请日：2006-02-01
发明人： Kisoda, Akira
CPC分类号： H04L1/0054 , H04B1/123 , H04B17/345 , H04L27/2647
摘要： A receiver determines whether co-channel interference is occurring using frequency characteristics of an analog television broadcast wave, and when co-channel interference is occurring, sets reliability information reflecting the frequency characteristic of the analog television broadcast wave for each carrier.
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3.发明公开Signal processing apparatus and method for wide-screen television system 失效Vorrichtung und Verfahren zum Verarbeiten eines Sign infürein Grossbildfernsehsystem。
公开(公告)号：EP0655862A2
公开(公告)日：1995-05-31
申请号：EP94118408.7
申请日：1994-11-23
发明人： Hayashi, Kenichiro , Kageyama, Sadashi , Handa, Kouji , Uwabata, Hideyo , Kisoda, Akira , Hayashi, Takaya , Ogata, Yasuyo , Yasumoto, Yoshio
CPC分类号： H04N5/211 , H04N7/007 , H04N7/012 , H04N7/0122 , H04N11/006
摘要： The television signal processing apparatus receives a video signal including a main signal (y,c) and a helper signal (VT,VH,AH), and produces a signal for display based on the main signal and the helper signal, the main signal being arranged in a predetermined portion of the screen having a first aspect ratio and representing a picture having a second aspect ratio, and the helper signal being used for improving the quality of picture of the main signal. The television signal processing apparatus includes: a noise/ghost detection circuit for detecting the level of at least one of noise and ghost included in the video signal, and for producing at least one control signal (ki) based on the detected level; a first signal processing circuit for receiving the main signal and for producing a first reproduction signal by processing the main signal; a second signal processing circuit for receiving the main signal and the helper signal, and for producing a second reproduction signal by processing the main signal and the helper signal; a mixing circuit (113) for receiving the control signal and the first and second reproduction signals, and for adding the first and second reproduction signal with respective weights in accordance with the control signal; and a circuit for converting an output signal of the mixing circuit into the signal for display. If the video signal includes noise and/or ghost, the image quality is prevented from being degraded due to the addition of the helper signal.
摘要翻译： 电视信号处理设备接收包括主信号和辅助信号的视频信号，并且基于主信号和辅助信号产生用于显示的信号，主信号被布置在具有第一方面的屏幕的预定部分中 并且表示具有第二宽高比的图像，并且辅助信号用于提高主信号的图像质量。 电视信号处理装置包括：噪声/重影检测电路，用于检测视频信号中包括的噪声和重影中的至少一个的电平，并且用于基于检测到的电平产生至少一个控制信号; 第一信号处理电路，用于接收主信号并通过处理主信号产生第一再现信号; 第二信号处理电路，用于接收主信号和辅助信号，并通过处理主信号和辅助信号产生第二再现信号; 混合电路，用于接收控制信号和第一和第二再现信号，并且用于根据控制信号将具有相应权重的第一和第二再现信号相加; 以及用于将混合电路的输出信号转换成用于显示的信号的电路。 如果视频信号包括噪声和/或重影，则防止图像质量因辅助信号的增加而劣化。
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公开(公告)号：EP0462570A3
公开(公告)日：1992-01-15
申请号：EP91109982.8
申请日：1991-06-18
IPC分类号： G11B5/708
CPC分类号： G11B5/70 , G11B5/708 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/265 , Y10T428/31663
摘要： In a magnetic recording medium spherical particles (5) are added in a surface magnetic layer (3) of a magnetic film (6) having multilayer configuration (structure). The spherical particles (5) have a diameter in the range of from 0.5 to 1.5 times as large as the thickness of the surface magnetic layer (3), and the amount of the spherical particles (5) is in the range of from 0.1 parts to 1 part per 100 parts by weight of magnetic powder included in the surface magnetic layer (3). Fine studs are formed by the spherical particles (5) on the surface of the surface magnetic layer (3), and it results in both small surface roughness and low coefficient of friction.
摘要翻译： 在磁记录介质中，将球形颗粒（5）添加到具有多层构造（结构）的磁性膜（6）的表面磁性层（3）中。 球状粒子（5）的直径为表面磁性层（3）的厚度的0.5〜1.5倍，球状粒子（5）的量为0.1份 相对于表面磁性层（3）中所含的磁性粉末100重量份为1重量份。 通过表面磁性层（3）表面上的球形颗粒（5）形成细柱，并且其导致小表面粗糙度和低摩擦系数。
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5.发明公开
公开(公告)号：EP1408625A2
公开(公告)日：2004-04-14
申请号：EP03022810.0
申请日：2003-10-07
CPC分类号： H04B7/0848 , H04B7/082 , H04B7/0871 , H04L25/0232 , H04L27/2647 , H04L2025/03414
摘要： In a diversity receiver comprising an AGC section for controlling the gain of a tuner, an equalizer equalizes an outputted signal from a fast Fourier transformer. A reliability calculator calculates the reliability value of each of carriers by an equalized pilot signal obtained from the equalizer. A reliability value corrector corrects the reliability value by outputted information from the AGC section. A carrier selecting/combining section performs one of selecting and weighting combining for the carrier in a branch in accordance with the corrected reliability value. When a Viterbi decoder is provided, the Viterbi decoder weights an output from the carrier selecting/combining section with a new reliability value to perform maximum likelihood decoding. It is possible to prevent a reliability value which does not reflect an actually received power from being calculated as a result of increasing a power by an AGC in spatial diversity for every OFDM or FDM demodulated carrier. Even in the case of mobile reception, data with high reliability can be decoded.
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6.发明公开Method and apparatus for OFDM (orthogonal frequency division multiplexing) demodulation 有权Verfahren und Vorrichtung zur OFDM-（orthogonale Frequenzmultiplexierung）Demodulation
公开(公告)号：EP1313282A1
公开(公告)日：2003-05-21
申请号：EP02025271.4
申请日：2002-11-12
CPC分类号： H04L25/0232 , H04L27/2647 , H04L2025/03414 , H04L2025/03522
摘要： At a first equalizer A, a scattered pilot signal is interpolated in time direction and frequency direction, thereby obtaining a channel characteristic H. By complex-dividing a received signal Y subjected to FFT by the channel characteristic, the respective signal is reconstituted. At a second equalizer B, a resultant signal is hard-decided, thereby obtaining a mapping vector X. Then, by dividing the received signal Y by X, a channel characteristic is calculated again. The calculated channel characteristic having reliability is substituted for the original channel characteristic. The substituted channel characteristic is filtered in frequency direction. In this way, a channel characteristic H' is calculated again and a signal point is reconstituted.
摘要翻译： 在第一均衡器A中，在时间方向和频率方向上插入散射导频信号，从而获得信道特性H.通过将经受FFT的接收信号Y复用除以信道特性，重新构成相应的信号。 在第二均衡器B处，得到的信号是硬判决的，从而获得映射矢量X.然后，通过将接收信号Y除以X，再次计算信道特性。 具有可靠性的计算的通道特性代替原始通道特性。 取代的通道特性在频率方向上被滤波。 以这种方式，再次计算通道特性H'，并重构信号点。
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公开(公告)号：EP0462570A2
公开(公告)日：1991-12-27
申请号：EP91109982.8
申请日：1991-06-18
IPC分类号： G11B5/708
CPC分类号： G11B5/70 , G11B5/708 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/265 , Y10T428/31663
摘要： In a magnetic recording medium spherical particles (5) are added in a surface magnetic layer (3) of a magnetic film (6) having multilayer configuration (structure). The spherical particles (5) have a diameter in the range of from 0.5 to 1.5 times as large as the thickness of the surface magnetic layer (3), and the amount of the spherical particles (5) is in the range of from 0.1 parts to 1 part per 100 parts by weight of magnetic powder included in the surface magnetic layer (3). Fine studs are formed by the spherical particles (5) on the surface of the surface magnetic layer (3), and it results in both small surface roughness and low coefficient of friction.
摘要翻译： 在磁记录介质中，在具有多层结构（结构）的磁性膜（6）的表面磁性层（3）中加入球形颗粒（5）。 球形粒子（5）的直径为表面磁性层（3）的厚度的0.5〜1.5倍，球状粒子（5）的量为0.1份 至每100重量份包含在表面磁性层（3）中的磁性粉末1份。 细小的螺柱由表面磁性层（3）表面上的球形颗粒（5）形成，导致表面粗糙度小，摩擦系数低。
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8.发明公开Synchronisation of the local oscillator and of the sampling clock in a multicarrier receiver 失效本地振荡器的同步和多载波接收器的采样时钟
公开(公告)号：EP0798903A3
公开(公告)日：2000-05-17
申请号：EP97105215.4
申请日：1997-03-27
发明人： Kimura, Tomohiro , Harada, Yasuo , Kageyama, Sadashi , Kisoda, Akira , Hayashi, Kenichiro , Hayashino, Hiroshi
IPC分类号： H04L27/26
CPC分类号： H04L27/2657 , H04L27/2662 , H04L27/2678
摘要： This application concerns the synchronisation of a local oscillator and a sampling clock, in a receiver for multicarrier signals. Tracking is based on correlations between the guard interval and the corresponding portion of the multicarrier symbol.
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公开(公告)号：EP0462570B1
公开(公告)日：1997-11-19
申请号：EP91109982.8
申请日：1991-06-18
IPC分类号： G11B5/708
CPC分类号： G11B5/70 , G11B5/708 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/265 , Y10T428/31663
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10.发明公开
公开(公告)号：EP0655862A3
公开(公告)日：1995-09-20
申请号：EP94118408.7
申请日：1994-11-23
发明人： Hayashi, Kenichiro , Kageyama, Sadashi , Handa, Kouji , Uwabata, Hideyo , Kisoda, Akira , Hayashi, Takaya , Ogata, Yasuyo , Yasumoto, Yoshio
CPC分类号： H04N5/211 , H04N7/007 , H04N7/012 , H04N7/0122 , H04N11/006
摘要： The television signal processing apparatus receives a video signal including a main signal (y,c) and a helper signal (VT,VH,AH), and produces a signal for display based on the main signal and the helper signal, the main signal being arranged in a predetermined portion of the screen having a first aspect ratio and representing a picture having a second aspect ratio, and the helper signal being used for improving the quality of picture of the main signal. The television signal processing apparatus includes: a noise/ghost detection circuit for detecting the level of at least one of noise and ghost included in the video signal, and for producing at least one control signal (ki) based on the detected level; a first signal processing circuit for receiving the main signal and for producing a first reproduction signal by processing the main signal; a second signal processing circuit for receiving the main signal and the helper signal, and for producing a second reproduction signal by processing the main signal and the helper signal; a mixing circuit (113) for receiving the control signal and the first and second reproduction signals, and for adding the first and second reproduction signal with respective weights in accordance with the control signal; and a circuit for converting an output signal of the mixing circuit into the signal for display. If the video signal includes noise and/or ghost, the image quality is prevented from being degraded due to the addition of the helper signal.
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