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公开(公告)号：US4979023A
公开(公告)日：1990-12-18
申请号：US330844
申请日：1989-03-30
CPC分类号： H04N9/78 , H03H21/0023
摘要： An adaptive comb filter employs vertical and horizontal edge detectors to selectively activate a vertical high-pass filter and a horizontal band-pass filter during the occurrence of vertical and horizontal edges in a received television signal, for use in the chrominance/luminance separation process. Artifacts such as "hanging dots" and "crawling dots", inherent in prior art comb filter circuits during the occurrence of vertical and horizontal edges in the composite television signal, are greatly reduced in the process.
摘要翻译： 自适应梳状滤波器采用垂直和水平边缘检测器，以便在接收的电视信号中发生垂直和水平边缘期间选择性地激活垂直高通滤波器和水平带通滤波器，以用于色度/亮度分离过程。 在复合电视信号中出现垂直和水平边缘时，现有技术梳状滤波器电路固有的诸如“悬点”和“爬行点”的人造物在该过程中大大减少。
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12.发明授权Method and apparatus for introducing a pan and scan feature to high definition television systems 失效将平移和扫描特征引入高分辨率电视系统的方法和装置
公开(公告)号：US4943856A
公开(公告)日：1990-07-24
申请号：US330941
申请日：1989-03-23
CPC分类号： H04N11/004 , H04N7/088
摘要： A method and apparatus for introducing a pan and scan feature to a multiple-signal high definition television (HDTV) system, so that a compatible signal received by a standard TV receiver may be a panned version of a wide aspect ratio HDTV signal, and so that high quality recombination of the compatible and augmenting signals by an HDTV receiver is possible. A pan and scan data word representing the relative movement of the compatible portion of the HDTV signal is inserted during the vertical blanking period of each frame of the HDTV signal, for causing panning synchronization between an HDTV transmitter and an HDTV receiver. The pan and scan data word corresponds to the beginning read address of a fixed coefficient memory containing video attenuation coefficients, which determine the degree of signal attenuation, to be applied at each pixel location along an HDTV scan line. The coefficient memory is addressed in a wrap-around manner, so that if the starting address in the read cycle is other than zero, the reading continues until the highest address in the memory is reached, and then address zero et seq. are read on up to the address before the starting address. By changing the points of passage, attenuation and suppression along scan lines, panning occurs.
摘要翻译： 一种用于将平移和扫描特征引入多信号高分辨率电视（HDTV）系统的方法和装置，使得由标准TV接收机接收的兼容信号可以是广视角比HDTV信号的平移版本，因此 通过HDTV接收机的兼容和增强信号的高质量复合是可能的。 在HDTV信号的每帧的垂直消隐期间插入表示HDTV信号的兼容部分的相对移动的平移和扫描数据字，用于使HDTV发射机与HDTV接收机之间进行平移同步。 平移和扫描数据字对应于包含视频衰减系数的固定系数存储器的开始读取地址，其确定将沿着HDTV扫描线在每个像素位置处施加的信号衰减程度。 系数存储器以环绕方式寻址，因此如果读周期中的起始地址不是零，则读取继续，直到存储器中的最高地址达到，然后地址为零等。 在起始地址之前读取地址。 通过改变沿着扫描线的通过点，衰减和抑制，进行平移。
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公开(公告)号：US4908697A
公开(公告)日：1990-03-13
申请号：US77557
申请日：1987-07-24
CPC分类号： H04N11/006 , H04N11/08
摘要： A high definition television signal with a sequential scan with the standard number of lines per frame and double the frame frequency is processed to generate a single MAC line having a duration substantially equal to that of four sequential lines of standard duration. Each MAC line has two luminance components having different compression ratios. For the remaining two lines, compressed line difference signals are transmitted, thereby allowing reconstruction of all luminance lines at the receiver. Each MAC line further has a U chrominance component and a V chrominance component, alternatively compressed 1:4 and 1:2. The remaining parts of each MAC line are taken up by data signals and audio as well as the necessary clamping. The luminance and chrominance signals are prefiltered to prevent artifacts. The filtering is geared to the visual characteristics of the human visual system, i.e. diagonal spatial frequencies are subjected to more filtering then either purely horizontal or purely vertical spatial frequencies.
摘要翻译： 处理具有每帧的标准行数和帧频倍数的顺序扫描的高分辨率电视信号以产生具有基本上等于标准持续时间的四个连续行的持续时间的持续时间的单个MAC线。 每个MAC线具有两个具有不同压缩比的亮度分量。 对于其余两行，传送压缩线差信号，从而允许在接收器处重建所有亮度线。 每个MAC线路还具有U色度分量和V色度分量，或者压缩1：4和1：2。 每个MAC线路的其余部分被数据信号和音频以及必要的夹紧所占据。 亮度和色度信号被过滤以防止伪像。 滤波适用于人类视觉系统的视觉特征，即对角空间频率经受更多的滤波，然后是纯水平或纯垂直的空间频率。
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14.发明授权Method and apparatus for recombining a main panel component with a augmentation panel component to create a wide aspect ratio televison display 失效用于将主面板组件与增强面板组件重新组合以产生宽纵横比电视显示的方法和装置
公开(公告)号：US4899220A
公开(公告)日：1990-02-06
申请号：US57848
申请日：1987-06-02
CPC分类号： H04N11/004
摘要： For a wide aspect ratio display, the main panel component and augmentation panel component at the transmitting end into which the horizontal line signals of hte source were decomposed are reconstituted at the receiving end by joining the previously separated components together at stitch points. In order to decrease the visibility of the stitch points in the reconstituted wide aspect ratio display, the location of the stitch point in each line is varied. The variation may be on a frame-to-frame bais or on aline-to-line basis. The latter is the preferred form, the line-to-line variation being, preferably, a random variation.
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公开(公告)号：US4847682A
公开(公告)日：1989-07-11
申请号：US134713
申请日：1987-12-18
CPC分类号： H03H21/0023 , H04N9/78
摘要： An adaptive comb filter employs vertical and horizontal edge detectors to selectively activate a vertical high-pass filter and a horizontal band-pass filter during the occurrence of vertical and horizontal edges in a received television signal, for use in the chrominance/luminance separation process. Artifacts such as "hanging dots" and "crawling dots", inherent in prior art comb filter circuits during the occurrence of vertical and horizontal edges in the composite television signal, are greatly reduced in the process.
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16.发明授权System for providing a high definition television (HDTV) augmentation channel comprising time and frequency multiplexed components 失效用于提供包括时间和频率复用分量的高分辨率电视（HDTV）增强通道的系统
公开(公告)号：US5087970A
公开(公告)日：1992-02-11
申请号：US542461
申请日：1990-06-22
CPC分类号： H04N11/008 , H04N9/797
摘要： A high definition television system to provide an efficient use of bandwidths, derives from a high definition television source signal, composite main signals and composite line differential signals. These signals are divided into main center components and main panel components and line differential center components and line differential panel components. The line differential center components and main center components are then quadrature modulated and transmitted as a vestigial sideband signal over a first transmission path. The main panel components and the line differential panel components are quadrature modulated and formed into a vestigial sideband signal which is then time multiplexed with the high frequency luminance signal forming a time multiplexed signal. The time multiplexed signal is then frequency multiplexed with a digital sound and synchronization signal in order to form an augmentation signal which is transmitted over a portion of a second transmission path.
摘要翻译： 提供高效率使用带宽的高清晰度电视系统，源于高分辨率电视源信号，复合主信号和复合线路差分信号。 这些信号分为主要中心组件和主面板组件以及线路差分中心组件和线路差分面板组件。 然后将线路差分中心分量和主要中心分量作为残留边带信号通过第一传输路径进行正交调制和传输。 主面板组件和线路差分面板组件被正交调制并形成残留边带信号，然后与形成时间复用信号的高频亮度信号进行时间复用。 然后时间复用信号与数字声音和同步信号进行频率复用，以形成在第二传输路径的一部分上传输的增强信号。
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17.发明授权Method and apparatus for the transmission and reception of a multicarrier high definition television signal 失效用于发送和接收多载波高清晰度电视信号的方法和装置
公开(公告)号：US5214501A
公开(公告)日：1993-05-25
申请号：US614885
申请日：1990-11-16
CPC分类号： H04L5/0062 , H04L27/2601 , H04L5/0005 , H04L5/0044 , H04L5/0066 , H04N11/002 , H04N5/4401 , H04N5/602
摘要： A method and apparatus for generating and receiving a high definition television signal suitable for use in a broadcasting environment wherein a conventional television signal is also used, having multiple frequency multiplexed subcarriers placed within the frequency spectrum of the signal so as to minimize interference with and from the conventional television signal.
摘要翻译： 一种用于生成和接收适合在广播环境中使用的高清晰度电视信号的方法和装置，其中还使用传统的电视信号，其具有放置在信号的频谱内的多个频率复用的副载波，以便最小化与 传统的电视信号。
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18.发明授权High definition NTSC compatible television system with increased horizontal bandwidth and reduced color artifacts 失效高清晰NTSC兼容电视系统，具有增加的水平带宽和减少的色彩伪影
公开(公告)号：US4999701A
公开(公告)日：1991-03-12
申请号：US377780
申请日：1989-07-10
CPC分类号： H04N11/004 , H04N11/14
摘要： A system for generating high definition television signals. An augmentation signal is provided for supporting the transmission of additional panel information, increasing the aspect ratio of an NTSC compatible main television signal component. Line differential information, as well as high frequency luminance and high frequency chrominance are transmitted in the augmentation signal super line time interval without frequency interleaving components. The high definition augmentation signal is derived by subsampling the high definition image produced by an HDTV source along the diagonal direction of its two dimensional frequency spectrum. The horizontal frequency bandwidth of the HDTV image is perserved without an objectionable loss of resolution to the human visual system.
摘要翻译： 一种用于产生高分辨率电视信号的系统。 提供增强信号用于支持附加面板信息的传输，增加NTSC兼容主电视信号分量的宽高比。 线路差分信息以及高频亮度和高频色度在增强信号超线路时间间隔内传输，而没有频率交错分量。 高清晰度增强信号是通过对HDTV信号源沿着其二维频谱的对角线方向产生的高分辨率图像进行二次采样得到的。 HDTV图像的水平频率带宽是持续的，而不会对人类视觉系统造成令人不快的分辨率损失。
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公开(公告)号：US07552352B2
公开(公告)日：2009-06-23
申请号：US10536647
申请日：2003-11-26
CPC分类号： H04N21/4307 , G11B27/10 , H04N5/04 , H04N21/23614 , H04N21/2368 , H04N21/4305 , H04N21/4341 , H04N21/4348 , H04N21/435 , H04N21/439 , H04N21/8126 , H04N21/8547
摘要： A method and system for synchronizing signals. First and second signals are sent (compressed or uncompressed) from a source to a receiving apparatus of a receiving system. The first signal has content of a first modality (e.g., audio) and the second signal has content of a second modality (e.g., video). The first and second signals are to be displayed on a display apparatus of the receiving system. The first and second signals have been time-synchronized at the source. If the first and second signals are not synchronized in time when received at the receiving apparatus, then the first and second signals may be time-synchronized at the receiving apparatus either manually or through timestamping of both signals at the source, in conjunction with use of a real-time clock at the receiving apparatus.
摘要翻译： 一种用于同步信号的方法和系统。 第一和第二信号从接收系统的源向接收装置发送（压缩或未压缩）。 第一信号具有第一模态（例如，音频）的内容，并且第二信号具有第二模式（例如，视频）的内容。 第一和第二信号将被显示在接收系统的显示装置上。 第一个和第二个信号在源头已经被时间同步了。 如果第一和第二信号在接收设备接收时不及时同步，那么第一和第二信号可以在接收设备上手动地或通过在源处的两个信号的时间戳与时间同步，同时使用 在接收设备处的实时时钟。
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20.发明授权Method and apparatus for increasing the spatial resolution of a projected pixelated display 失效用于增加投影像素化显示器的空间分辨率的方法和装置公开(公告)号：US06575576B1
公开(公告)日：2003-06-10
申请号：US10161011
申请日：2002-06-03
IPC分类号： G03B226
CPC分类号： G03B21/005
摘要： A pixelated image display system comprising: a first panel including an array of pixel elements, each pixel element partially masked by an opaque region; one or more additional panels, each additional panel including an array of pixel elements, each pixel element partially masked by an opaque region; means for directing a different subset of pixel data from an image dataset to each the panel to control the pixel elements of each panel; and means for aligning and projecting interleaved pixel elements, in at least one of the horizontal and vertical directions, from each panel onto a screen to form a pixelated image.
摘要翻译： 一种像素化图像显示系统，包括：包括像素元件阵列的第一面板，由不透明区域部分掩蔽的每个像素元件; 一个或多个附加面板，每个附加面板包括像素元件阵列，每个像素元件部分地被不透明区域掩蔽; 用于将像素数据的不同子集从图像数据集指向每个面板以控制每个面板的像素元素的装置; 以及用于将来自每个面板的水平和垂直方向中的至少一个中的交错像素元件对准和投影到屏幕上以形成像素化图像的装置。
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