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    • 24. 发明授权
    • Coder for segmented coding of an input signal using controllable
quantization based on quantization step size and buffer fullness
    • 编码器,用于基于量化步长和缓冲器充满度使用可控量化的输入信号的分段编码
    • US6147627A
    • 2000-11-14
    • US977565
    • 1997-11-25
    • Peter Vogel
    • Peter Vogel
    • H04N11/04G06T9/00H03M7/40H04N19/115H04N19/124H04N19/176H04N19/182H04N19/192H04N19/60H03M7/00
    • H04N19/192H04N19/115H04N19/124H04N19/176H04N19/182H04N19/60H04N19/146H04N19/152
    • A coder for segmented coding of an input signal (b) by using of a controllable quantizer (1C) and a buffer memory (6) is described. Data of the input signing (b), which are quantized and VLC-coded in operation, are buffered in the buffered memory (6). To avoid the conventional control, beset with drawbacks, of the quantizer (1C) by using of the filling state of the buffer memory (6), a controller (3, 4, 7, S1, S2, S3) provided with which a single adjustment of the quantizer (1C) for a signal segment to be coded is determined in that the signal segment is trial-coded at different adjustments of the quantizer (1C), the bit volume (the number of bits) is determined at each trial run, resulting in a VLC coding of the signal segment at the actually selected adjustment of the quantizer (1C), and that adjustment of the quantizer (1C) is used for the final coding and transmission of the signal segment which, during the trial runs, has yielded a bit volume which substantially corresponds to a nominal bit volume.
    • 描述了通过使用可控量化器(1C)和缓冲存储器(6)对输入信号(b)进行分段编码的编码器。 经量化和VLC编码的输入签名(b)的数据被缓冲在缓冲存储器(6)中。 为了避免通过使用缓冲存储器(6)的填充状态来限制量化器(1C)的传统控制,提供了一个控制器(3,4,7,S1,S2,S3),其具有单个 确定要编码的信号段的量化器(1C)的调整是,在量化器(1C)的不同调整下对信号段进行试验编码,在每个试运行中确定位体积(位数) 导致在量化器(1C)的实际选择的调整处的信号段的VLC编码,并且量化器(1C)的调整用于信号段的最终编码和传输,其在试运行期间, 已经产生了基本上对应于标称位体积的位体积。
    • 26. 发明授权
    • System for transmitting video pictures
    • 用于传输视频图像的系统
    • US5021879A
    • 1991-06-04
    • US590450
    • 1990-09-24
    • Peter Vogel
    • Peter Vogel
    • H04N7/26H04N7/32H04N7/50H04N11/04
    • H04N11/044H04N19/61
    • A system for transmitting video pictures includes a hybrid encoder which encodes the incoming data of a video picture in blocks. Preferably, at the receiver end a hybrid decoder cancels the encoding steps of the hybrid encoder. The incoming blocks of a video picture are transformed inter alia by a transform unit (T) and quantized by a quantizer (Q). In order to adapt the system to transmission bit rates of between 64 kbit/s and 2 Mbit/s in an optimum manner, a structuring unit (SE) is provided which combines a plurality of blocks, which represent a coherent section of a video picture, to one macro-block. It assigns a macro-attribute to each macro-block from which attribute it can be derived which properties are identical for all sub-blocks of the macro-blocks and which are not. Such properties are, for example, records about the motion vector of each sub-block, which vector may be the same, for example, for all sub-blocks. When using a separate macro-attribute (NON), there is no property which can be considered to be the same for all sub-blocks of a macro-block, but the properties are assigned to each sub-block proper. If required, the macro-blocks themselves are again treated as sub-blocks, i.e. they are combined to still larger units. When transmitting stationary pictures, a very effective encoding is the result.
    • 用于发送视频图像的系统包括以块为单位编码视频图像的输入数据的混合编码器。 优选地,在接收端,混合解码器取消混合编码器的编码步骤。 视频图像的输入块特别由变换单元(T)变换并由量化器(Q)量化。 为了以最佳的方式将系统适应于64kbit / s到2Mbit / s之间的传输比特率,提供了结构化单元(SE),其组合了多个块,其表示视频图像的相干部分 ,到一个宏块。 它为每个宏块分配一个宏属性,从中可以导出哪些属性,哪些属性对于宏块的所有子块都是相同的,哪些属性不相同。 这样的属性例如是关于每个子块的运动矢量的记录,哪个矢量可以是相同的,例如对于所有的子块。 当使用单独的宏属性(NON)时,对于宏块的所有子块都不能被认为是相同的属性,但属性被分配给每个子块。 如果需要,宏块本身再次被视为子块,即它们被组合到更大的单元。 当传输静态图像时,会产生非常有效的编码。