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公开(公告)号：US5010391A
公开(公告)日：1991-04-23
申请号：US261915
申请日：1988-10-24
摘要： In a digital video signal processing device, a digital filter two-dimensionally limits the bandwidth of a digital video signal which is obtained by time-base multiplexing a digital luminance signal with a digital chrominance signal for each horizontal scanning line, and the signal which has been band-limited by the digital filter is offset-subsampled.
摘要翻译： 在数字视频信号处理装置中，数字滤波器二维地限制通过用于每个水平扫描线的数字色度信号对数字亮度信号进行时基复用而获得的数字视频信号的带宽，以及具有 被数字滤波器限幅的频偏被子采样。
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公开(公告)号：US4903124A
公开(公告)日：1990-02-20
申请号：US673244
申请日：1989-03-16
摘要： Disclosed is an image information signal transmission apparatus wherein an image information signal in which one frame is constituted by a plurality of sample data is input, the input image information signal is divided into a plurality of blocks each consisting of a predetermined number of sample data, at least two types of reference value data associated with a dynamic range of sample data of each block is formed in units of blocks, the sample data of each block is coded by using the reference value data to form a plurality of first coded data in units of blocks, the plurality of first coded data formed in units of blocks are vector-quantized to form second coded data in units of blocks, and transmission data is formed by using as a transmission unit the reference data formed in units of blocks and the second coded data formed in units of blocks. The image information signal can be transmitted in a small information volume without degrading the image information signal.
摘要翻译： 公开了一种图像信息信号传输装置，其中输入一个帧由多个采样数据构成的图像信息信号，输入图像信息信号被分成多个块，每个块由预定数量的采样数据组成， 与块的采样数据的动态范围相关联的至少两种参考值数据以块为单位形成，通过使用参考值数据对每个块的采样数据进行编码，以形成多个第一编码数据 以块为单位形成的多个第一编码数据被矢量量化，以块为单位形成第二编码数据，并且通过以块为单位使用形成为块的参考数据作为发送单位来形成发送数据，并且第二 以块为单位形成的编码数据。 图像信息信号可以以小的信息量发送，而不降低图像信息信号。
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