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    • 7. 发明授权
    • Compression of combined black/white and color video signal
    • 压缩组合的黑/白和彩色视频信号
    • US06516030B1
    • 2003-02-04
    • US09079104
    • 1998-05-14
    • William C. LynchKrasimir D. KolarovD. Robert HooverWilliam J. Arrighi
    • William C. LynchKrasimir D. KolarovD. Robert HooverWilliam J. Arrighi
    • H04N1102
    • H04N19/649H04N19/112H04N19/186H04N19/62H04N19/645
    • A technique for compressing video images uses temporary compression of blocks during compression, integrated color rotation of compressed images, direct compression of a composite video signal, and border filters to allow blocks to be compressed independently. Temporary compression reduces storage needed in an integrated circuit. An incoming frame is compressed block-by-block and placed in temporary storage. A corresponding block of a later frame is also compressed. Both blocks are decoded back into the transform domain and the two blocks are compared in the transform domain. Color rotation on compressed color information is integrated with overall compression and is performed upon the chrominance transform pyramids after transformation of the video signal rather than performing a rotation on the raw signal itself. Color rotation is performed at any stage and uses serial multiplication (shift and add) for more efficient processing, rather than using parallel multiplication. A composite video signal including both color and black and white information is compressed directly without separating the color information from the black and white. A sequence of passes separates the luminance and chrominance information from the composite video signal and demodulates the color carrier to separate out color information. Blocks of information are treated independently using a modified 2-6 Biorthogonal filter to reduce complexity, to reduce hardware needed and to reduce blocking artifacts. The technique identifies and compresses composite video, S video, and component video signals, and is applicable to low bit rate video applications.
    • 用于压缩视频图像的技术在压缩期间使用块的临时压缩,压缩图像的集成颜色旋转,复合视频信号的直接压缩以及边界滤波器以允许单独压缩块。 临时压缩可减少集成电路中所需的存储空间。 进入的帧被逐块压缩并放置在临时存储器中。 后一帧的相应块也被压缩。 两个块被解码回变换域,并且在变换域中比较两个块。 压缩颜色信息上的色彩旋转与整体压缩进行整合,并且在视频信号变换之后对色度变换金字塔执行,而不是对原始信号本身执行旋转。 颜色旋转在任何阶段执行,并使用串行乘法(移位和加法)进行更有效的处理,而不是使用并行乘法。 直接压缩包括彩色和黑白信息的复合视频信号,而不会将颜色信息与黑白分离。 一系列通过将亮度和色度信息与复合视频信号分离,并解调色载体以分离出颜色信息。 使用修改后的2-6双正交滤波器对信息块进行独立处理,以降低复杂性,减少硬件需求并减少块体伪影。 该技术识别和压缩复合视频,S视频和分量视频信号,适用于低比特率视频应用。
    • 10. 发明授权
    • Image data processing apparatus and motion compensation processing method used therefor, and recording medium
    • 用于其的图像数据处理装置和运动补偿处理方法以及记录介质
    • US06831951B2
    • 2004-12-14
    • US09796466
    • 2001-03-02
    • Toru Yamada
    • Toru Yamada
    • H04N1102
    • H04N19/45H04N19/51H04N19/60
    • A compressed data buffer 21 maintains an image data loaded from a storage device 1, and a decoding section 22 conducts variable length decoding, inverse quantization and inverse discrete cosine transform, and a pixel data shifting section 23 shifts each value of pixel data to right by 1 bit, and a motion compensating section 24 applies motion compensation processing to the data shifted to right by 1 bit, and the frame data buffer 25 stores an image data to be displayed, and a reference data calculating section 24a of the motion compensating section 24 obtains a reference data from a reference buffer based on a motion vector, and a reference data adding section 24b adds the reference data to a data to which decoding processing has been applied, and a reference data storing section 24c leaves in the reference buffer the data to which the motion compensation processing has been applied.
    • 压缩数据缓冲器21保持从存储装置1加载的图像数据,并且解码部分22进行可变长度解码,逆量化和反相离散余弦变换,并且像素数据移位部分23将像素数据的数值右移至 1位,并且运动补偿部分24对向右移位1位的数据应用运动补偿处理,并且帧数据缓冲器25存储要显示的图像数据和运动补偿部分24的参考数据计算部分24a 基于运动矢量从参考缓冲器获取参考数据,并且参考数据添加部分24b将参考数据添加到已经应用了解码处理的数据,并且参考数据存储部分24c在参考缓冲器中离开数据 已经应用了运动补偿处理。