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    • 5. 发明授权
    • Method and apparatus for two-channel recording of video signals
    • 用于视频信号双通道录像的方法和装置
    • US5394276A
    • 1995-02-28
    • US49589
    • 1993-04-20
    • Makoto Adachi
    • Makoto Adachi
    • H04N5/92H04N7/015H04N9/797H04N9/81H04N5/78
    • H04N9/7973Y10S348/91
    • A video signal recording apparatus is provided with first and second channels for transmitting an input video signal. The first channel has a line memory for conducting a 1H delay on data and a time-base-extension line memory for conducting time base extension on the data with the 1H delay. The data subjected to the time base extension undergoes D/A conversion to be an output of the first channel. On the other hand, the second channel does not have a line memory for a 1H delay, and the video signal without delay is subjected to time base extension and undergoes D/A conversion to be an output of the second channel. In the arrangement, odd lines and even lines respectively contained in adjoining two frames in each channel are reversed such that in a certain frame, odd lines of the input video signal are transmitted through the first channel with even lines through the second channel. In the next frame, even lines are transmitted through the first channel with odd lines through the second channel. Thus, influences on the reproduced picture due to the difference of circuit characteristics is averaged and the perception to unevenness of color or brightness is avoided.
    • 视频信号记录装置具有用于发送输入视频信号的第一和第二信道。 第一通道具有用于在数据上进行1H延迟的行存储器和用于对1H延迟的数据进行时基扩展的时基扩展线存储器。 经过时基扩展的数据经历D / A转换为第一通道的输出。 另一方面,第二通道不具有用于1H延迟的行存储器,并且没有延迟的视频信号经受时基扩展,并且经历D / A转换为第二通道的输出。 在这种布置中,分别包含在每个通道中的相邻两个帧中的奇数行和偶数行被反转,使得在某个帧中,输入视频信号的奇数行通过第二通道的偶数行通过第一通道传输。 在下一帧中,偶数行通过第二通道以奇数行通过第一通道传输。 因此,由于电路特性的差异对对再现图像的影响被平均,并且避免了对颜色或亮度的不均匀性的感知。
    • 8. 发明授权
    • Image decoding apparatus and image decoding method
    • 图像解码装置和图像解码方法
    • US08885707B2
    • 2014-11-11
    • US11887441
    • 2006-03-31
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • Makoto AdachiHiroaki ToidaKiyofumi Abe
    • H04N7/12H04N19/593H04N19/61H04N19/89H04N19/44H04N19/11H04N19/176H04N19/46
    • H04N19/159H04N19/11H04N19/136H04N19/176H04N19/423H04N19/44H04N19/46H04N19/593H04N19/61H04N19/89
    • An image decoding apparatus and an image decoding method capable of generating a decoded image even in the case where a pixel in a block is necessary as a reference pixel, the block where an intra prediction mode specified in a stream is unavailable according to a standard, due to a transmission error, a coding-method error, or the like. An image decoding apparatus determines whether or not a reference block necessary for a specified intra prediction mode is available, based on intra-prediction mode information extracted by an intra-prediction mode extraction unit and peripheral block pixel information stored in a line memory. The image decoding apparatus includes a reference pixel determination unit which controls a switch unit; and a substitute intra-prediction image generation unit which generates a substitute intra-prediction image in the case where a reference block necessary for a specified intra prediction mode is unavailable.
    • 即使在需要块中的像素作为参考像素的情况下也能够生成解码图像的图像解码装置和图像解码方法,流中指定的帧内预测模式的块根据标准不可用, 由于传输错误,编码方法错误等。 图像解码装置基于由帧内预测模式提取单元提取的帧内预测模式信息和存储在行存储器中的周边块像素信息来确定指定帧内预测模式所需的参考块是否可用。 图像解码装置包括控制开关单元的参考像素确定单元; 以及在指定的帧内预测模式所需的基准块不可用的情况下,生成替代帧内预测图像的替代帧内预测图像生成单元。