Method for generating test patterns for detecting and quantifying losses in video equipment
    1.
    发明授权
    Method for generating test patterns for detecting and quantifying losses in video equipment 有权
    用于生成用于检测和量化视频设备中的损耗的测试模式的方法

    公开(公告)号:US09083943B2

    公开(公告)日:2015-07-14

    申请号:US12132059

    申请日:2008-06-03

    CPC classification number: H04N17/02 H04N17/00

    Abstract: A method for detecting and quantifying losses in at least one of video and audio equipment, comprising the steps of generating the test pattern; processing the test pattern through video equipment; and displaying the processed test pattern to a display to a viewer. In one embodiment, the test pattern is indicative of video compression losses due to quantization. In another embodiment, the test pattern is indicative of a color transformation mismatch after encoding/decoding with incompatible video transmission standards. In a third embodiment, the test pattern is iso-luminant after a color transformation between a first and second video transmission standard. In a fourth embodiment, the test pattern is indicative of lipsync error.

    Abstract translation: 一种用于检测和量化视频和音频设备中的至少一个中的损耗的方法,包括以下步骤:产生测试图案; 通过视频设备处理测试模式; 并将处理的测试图案显示给观看者。 在一个实施例中,测试模式指示由于量化造成的视频压缩损失。 在另一个实施例中,测试图案表示在用不兼容的视频传输标准进行编码/解码之后的颜色变换失配。 在第三实施例中,在第一和第二视频传输标准之间的颜色变换之后,测试图案是异亮度的。 在第四实施例中,测试图案指示唇同步误差。

    Video decoding and channel acquisition system
    2.
    发明授权
    Video decoding and channel acquisition system 有权
    视频解码和通道采集系统

    公开(公告)号:US06985188B1

    公开(公告)日:2006-01-10

    申请号:US09451064

    申请日:1999-11-30

    Abstract: A digital video decoding system receives packetized video data representing programs conveyed on a plurality of video channels. The system includes a plurality of buffers for storing encoded video data representing images of video programs conveyed on a corresponding plurality of video channels. An individual buffer, corresponding to an individual video channel, stores sufficient encoded video data to prevent an underflow condition following switching to decode a program conveyed on the individual video channel. A processor initiates switching to decode a program conveyed on a selected one of the plurality of video channels in response to a user channel selection input. A decoder decodes encoded video data received from one of the plurality of buffers corresponding to the program conveyed on the selected video channel as determined by switching initiated by the processor. The decoder also predicts a next channel to be selected by a user based on, (a) predetermined user channel and program preference criteria, (b) predetermined user channel navigation patterns, or (c) user data entry device sensory data.

    Abstract translation: 数字视频解码系统接收表示在多个视频频道上传送的节目的分组化视频数据。 该系统包括多个缓冲器,用于存储表示在对应的多个视频通道上传送的视频节目的图像的编码视频数据。 对应于单个视频通道的单个缓冲器存储足够的编码视频数据,以防止在切换以解码在各个视频信道上传送的节目之后的下溢条件。 响应于用户频道选择输入,处理器启动切换以解码在多个视频频道中的所选择的一个上传送的节目。 解码器解码从通过由处理器发起的切换确定的与所选择的视频信道上传送的节目相对应的多个缓冲器中的一个缓冲器中接收的编码视频数据。 解码器还基于(a)预定用户信道和节目偏好准则,(b)预定用户信道导航模式或(c)用户数据输入设备感觉数据来预测用户选择的下一个信道。

    Constraining video production based on compression-related information
    4.
    发明授权
    Constraining video production based on compression-related information 有权
    基于压缩相关信息约束视频制作

    公开(公告)号:US06785338B1

    公开(公告)日:2004-08-31

    申请号:US09484928

    申请日:2000-01-18

    Abstract: Compression-related information is used to constrain the selection and control of video imagery and content used to produce one or more uncompressed video streams for subsequent compression processing. Rather than taking an uncompressed video stream “as is” for compression processing, characteristics of compression processing are taken into consideration during the video production stage when the uncompressed video stream is generated. Different types of constraints include “intra-frame” constraints that constrain video content within a frame of a video stream, “inter-frame” constraints that constrain video content from frame to frame within a video stream, and “inter-stream” constraints that constrain video content across different video streams. Two or more different constraints and two or more different types of constraints may be applied simultaneously. The compression-related information may be “static” (e.g., in the form of processing “rules” that are applied) or fed back in real time from the video compression stage as “dynamic” information. By taking the subsequent compression processing into account during the video production stage, the resulting uncompressed video stream(s) can be encoded (e.g., to achieve more programs per channel and/or higher quality per program) using computationally inexpensive “objective” video compression algorithms that operate without taking video content into consideration, while still achieving the bit rate and video quality levels achieved using computationally expensive “subjective” video compression algorithms that do take video content into consideration.

    Abstract translation: 压缩相关信息用于约束用于产生一个或多个未压缩视频流的视频图像和内容的选择和控制,用于随后的压缩处理。 而不是像压缩处理那样采取未压缩的视频流,而是在生成未压缩视频流的视频制作阶段考虑压缩处理的特性。 不同类型的约束包括限制视频流的帧内的视频内容的“帧内”约束,在视频流内从帧到帧限制视频内容的“帧间”约束,以及“视频间流”约束 限制跨不同视频流的视频内容。 可以同时应用两个或多个不同约束和两个或多个不同类型的约束。 压缩相关信息可以是“静态”(例如,以应用的处理“规则”的形式)或从视频压缩级实时反馈为“动态”信息。 通过在视频制作阶段考虑随后的压缩处理,可以使用计算上便宜的“客观”视频压缩来对所得到的未压缩视频流进行编码(例如,以每个频道实现更多节目和/或更高质量) 在不考虑视频内容的情况下运行的算法,同时仍然使用考虑视频内容的计算昂贵的“主观”视频压缩算法来实现比特率和视频质量水平。

    Logo insertion based on constrained encoding
    5.
    发明授权
    Logo insertion based on constrained encoding 失效
    基于约束编码的标识插入

    公开(公告)号:US06373530B1

    公开(公告)日:2002-04-16

    申请号:US09126974

    申请日:1998-07-31

    Abstract: When logos or other imagery are to be added to compressed digital video bitstreams, certain constraints are applied to the encoder that generates the original compressed bitstream to enable a video logo processor (e.g., at a local broadcaster) to insert logo-inserted encoded data into the bitstream without placing substantial processing demands on the video logo processor. In one embodiment, areas where logos can be inserted are identified and the encoder is not allowed to use image data within those logo areas as reference data when performing motion-compensated inter-frame differencing for pixels outside of the logo areas. Preferably, the compressed data corresponding to the desired location for logo insertion are extracted from the compressed bitstream and replaced by logo-inserted encoded data. As a result, logos can be inserted into compressed digital video bitstreams without having to completely decode and re-encode the bitstreams, while maintaining the overall quality of the video display.

    Abstract translation: 当将徽标或其他图像添加到压缩数字视频比特流时,将某些约束应用于生成原始压缩比特流的编码器,以使视频标识处理器(例如,在本地广播公司)能够将标记插入的编码数据插入 比特流,而不对视频标识处理器施加实质的处理需求。 在一个实施例中,当对标识区域之外的像素执行运动补偿帧间差分时,识别可以插入徽标的区域,并且不允许编码器在这些标志区域内使用图像数据作为参考数据。 优选地,从压缩比特流中提取对应于用于徽标插入的期望位置的压缩数据,并由标记插入的编码数据替换。 结果,可以将徽标插入到压缩的数字视频比特流中,而不必完全解码和重新编码比特流,同时保持视频显示的整体质量。

    Noise estimation and reduction apparatus for video signal processing
    6.
    发明授权
    Noise estimation and reduction apparatus for video signal processing 失效
    用于视频信号处理的噪声估计和减少装置

    公开(公告)号:US06285710B1

    公开(公告)日:2001-09-04

    申请号:US08571044

    申请日:1995-12-12

    Abstract: Video signal compression apparatus generates residues representing pixel value differences between predicted and real pixel values of a current frame of a video signal. Noise reduction circuitry, in the form of nonlinear processing functions, attenuates lower amplitude residues greater than higher amplitude residues and is responsive to a noise estimate. The processed residues are transformed to provide a compressed video data output. The nonlinear processing functions attenuate noise and reduce image distortion.

    Abstract translation: 视频信号压缩装置产生表示视频信号的当前帧的预测像素值和实际像素值之间的像素值差的残差。 以非线性处理功能形式的降噪电路衰减大于较高振幅残差的较低振幅残差,并对噪声估计作出响应。 经处理的残留物被转换以提供压缩的视频数据输出。 非线性处理功能衰减噪声并减少图像失真。

    Block motion video coding and decoding
    7.
    发明授权
    Block motion video coding and decoding 有权
    块运动视频编码和解码

    公开(公告)号:US06188728B1

    公开(公告)日:2001-02-13

    申请号:US09388701

    申请日:1999-09-02

    Abstract: During transform-based video compression processing, motion vectors, which are identified during motion estimation and then used during motion-compensated inter-frame differencing, are constrained to coincide with block boundaries in the reference data. Block-based motion vectors have components that correspond to integer multiples of block dimensions. For example, for (8×8) blocks, allowable motion vector components are ( . . . , −16, −8, 0, +8, +16, . . . ). Constraining motion vectors in this way enables the resulting encoded video bitstream to be further processed in the transform domain without having to apply inverse and forward transforms. In particular, an existing input bitstream is partially decoded to recover the motion vectors and prediction error (i.e., dequantized transform coefficients). Because the motion vectors coincide with block boundaries in the corresponding reference data, motion-compensated inter-frame addition can then performed in the transform domain to generate transform data for subsequent processing (which may ultimately involve re-encoding the transform data into another encoded video bitstream). Because motion compensation can be performed in the transform domain, the bitstream data can be further processed in the transform domain and without having to apply expensive and lossy inverse and forward transforms.

    Abstract translation: 在基于变换的视频压缩处理期间,在运动估计期间识别并且然后在运动补偿帧间差分期间被使用的运动矢量被限制为与参考数据中的块边界一致。 基于块的运动矢量具有对应于块尺寸的整数倍的分量。 例如,对于(8×8)块,允许的运动矢量分量是(...,-16,-8,0,+ 8,+ 16,...)。 以这种方式约束运动矢量使得所得到的编码视频比特流能够在变换域中进一步处理,而不必应用反向和正向变换。 特别地,现有的输入比特流被部分解码以恢复运动矢量和预测误差(即,反量化的变换系数)。 由于运动矢量与相应参考数据中的块边界一致,因此可以在变换域中执行运动补偿帧间相加以产生用于后续处理的变换数据(其可能最终涉及将变换数据重新编码到另一编码视频 比特流)。 因为可以在变换域中执行运动补偿,所以可以在变换域中进一步处理比特流数据,而不必应用昂贵且有损的逆向和正向变换。

    Discontinuous motion special effects generator for television
    9.
    发明授权
    Discontinuous motion special effects generator for television 失效
    电视不连续运动特效发生器

    公开(公告)号:US4080626A

    公开(公告)日:1978-03-21

    申请号:US753878

    申请日:1976-12-23

    CPC classification number: H04N5/2625

    Abstract: A discontinuous motion special effects generator for television is described including a memory means responsive to a television video signal for storing signals representing a television picture field and memory control means for controlling the writing and reading of the picture fields. This generator includes means for automatically providing control pulses at a rate for desired discontinuous motion. The generator further includes means coupled to the memory control means and responsive to the control pulses for writing a single picture field of video only on the occurrence of each control pulse whereby the video output changes only on the occurrence of each control pulse.

    Abstract translation: 描述了用于电视的不连续运动特效发生器,其包括响应于用于存储表示电视图像场的信号的电视视频信号的存储装置和用于控制图像场的写入和读取的存储器控​​制装置。 该发生器包括用于以期望的不连续运动的速率自动提供控制脉冲的装置。 发生器还包括耦合到存储器控制装置的装置,并且响应于用于仅在每个控制脉冲的出现上写入视频的单个图像场的控制脉冲,由此视频输出仅在每个控制脉冲的出现上改变。

    Signal defect compensation
    10.
    发明授权
    Signal defect compensation 失效
    信号缺陷补偿

    公开(公告)号:US4021852A

    公开(公告)日:1977-05-03

    申请号:US606480

    申请日:1975-08-21

    CPC classification number: G11B23/0007 H03G3/345 H04N9/882

    Abstract: A system is provided for compensating for signal defects such as dropouts in recorded television signals. A recovered video signal is delayed for a period of substantially one scanning line, and the delayed signal is coupled to two channels, one for the luminance and scan synchronizing information and the other for the color information. The color information is phase-reversed each time it is delayed so as to provide a proper phase relationship when reinserting the delayed information into the signal path. The two channels are recombined to provide a compensating signal which is substituted for the original video signal during a dropout. In addition, when a head-switching transient such as occurs in a quadruplex VTR is sensed, a further mode of operation is activated in which the system substitutes a portion of the prior line horizontal blanking interval for the duration of the switching transient so as to prevent degradation of the synchronizing signal and resultant disturbance to the operation of the recorder servo systems.

    Abstract translation: 提供了一种用于补偿记录的电视信号中的信号缺陷(例如丢失)的系统。 恢复的视频信号被延迟了大致一条扫描线的周期,并且延迟的信号被耦合到两个信道,一个用于亮度和扫描同步信息,另一个被耦合到彩色信息。 颜色信息每次被延迟时相位反转,以便在将延迟信息重新插入信号路径时提供适当的相位关系。 两个通道被重组以提供补偿信号,该补偿信号在丢失期间代替原始视频信号。 另外,当检测到诸如发生在四重VTR中的头切换瞬变被激活时,另外的操作模式被激活,其中系统在切换瞬变的持续时间期间替换现有行水平消隐间隔的一部分,以便 防止同步信号的劣化和对记录器伺服系统的操作的干扰。

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