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    • 2. 发明授权
    • Encoding and decoding apparatus and method for analog and digital signals
    • 用于模拟和数字信号的编码和解码装置和方法
    • US5940542A
    • 1999-08-17
    • US743631
    • 1996-11-04
    • Weiping LiQinghong CaoChun WangKenneth K. Tzeng
    • Weiping LiQinghong CaoChun WangKenneth K. Tzeng
    • G06T9/00G06K9/36H04L23/02H04L27/06
    • G06T9/008
    • A method and apparatus is disclosed for encoding and decoding an input signal representative of video or audio information. A form of the method includes the following steps: processing the input signal to produce a sequence of vectors representative of the input signal; implementing a lattice vector quantization procedure on individual vectors of the sequence to identify a lattice point of a lattice that is closest to the individual vector and to obtain an index value representative of a labelling of the identified lattice point, the lattice vector quantization procedure including a multi-level allocation of groups of reserved indices, and selection of the index value for the individual vector within a group of reserved indices. The index signals representative of the index values are stored and/or transmitted, and then recovered for decoding. The decoding is operative to obtain a recovered sequence of vectors, and the sequence of vectors can be processed to produce an output signal.
    • 公开了一种用于对表示视频或音频信息的输入信号进行编码和解码的方法和装置。 该方法的一种形式包括以下步骤:处理输入信号以产生表示输入信号的向量序列; 对所述序列的各个向量实施格子矢量量化过程,以识别最接近所述个体矢量的格子的格点,并获得表示所识别的格点的标记的索引值,所述格子矢量量化过程包括 保留索引组的多级分配,以及一组保留索引内各个向量的索引值的选择。 表示索引值的索引信号被存储和/或发送,然后被恢复用于解码。 解码操作以获得恢复的向量序列,并且可以处理向量序列以产生输出信号。
    • 3. 发明授权
    • Method and apparatus for encoding and decoding images
    • 用于对图像进行编码和解码的方法和装置
    • US6144771A
    • 2000-11-07
    • US884440
    • 1997-06-27
    • Weiping LiShipeng LiHangqiao Sun
    • Weiping LiShipeng LiHangqiao Sun
    • G06T9/00G06K9/36
    • G06T9/005
    • A method is disclosed for adaptive entropy coding and decoding of a stream of indices representative of information, including the following steps: establishing, at both an encoder and a decoder, respective coding tables to have codes corresponding to indices; finding, in the encoder table, codes corresponding to indices of the stream of indices, and sending the found codes to the decoder for recovery of the indices corresponding to the sent codes; determining an overall frequency of occurrence of individual indices in the stream of indices; determining a measure of how currently individual indices have occurred in the stream of indices; and adaptively modifying the encoder and decoder tables in accordance with the measure of how currently individual indices have occurred and the frequency of occurrence.
    • 公开了一种表示信息的索引的自适应熵编码和解码的方法,包括以下步骤:在编码器和解码器处建立各自的编码表以具有对应于索引的代码; 在编码器表中找出对应于索引流的索引的代码,并将找到的代码发送到解码器以恢复与发送的代码相对应的索引; 确定指标流中个体指数的总体出现频率; 确定在指数流中如何发生个别指数的衡量指标; 并根据当前各个指标的发生方式和发生频率的度量自适应地修改编码器和解码器表。
    • 5. 发明授权
    • Lattice vector transform coding method for image and video compression
    • 用于图像和视频压缩的格子矢量变换编码方法
    • US5883981A
    • 1999-03-16
    • US733849
    • 1996-10-18
    • Weiping LiQinghong CaoChun WangKenneth K. Tzeng
    • Weiping LiQinghong CaoChun WangKenneth K. Tzeng
    • G06T9/00G06K9/36G06K9/38G06K9/46
    • G06T9/008
    • A method is disclosed for encoding and decoding an input signal representative of video or audio information. A form of the encoding includes the following steps: processing the input signal to produce a sequence of vectors representative of the input signal; implementing a lattice vector quantization procedure on individual vectors of the sequence to identify a lattice point of a lattice that is closest to the individual vector and to obtain an index value representative of a labelling of the identified lattice point, the lattice vector quantization procedure including a multi-level allocation of groups of reserved indices, and selection of the index value for the individual vector within a group of reserved indices. The index signals representative of the index values are stored and then recovered for decoding, or transmitted before decoding. The decoding is operative to obtain a recovered sequence of vectors, and the sequence of vectors can be processed to produce an output signal.
    • 公开了一种用于编码和解码表示视频或音频信息的输入信号的方法。 编码的形式包括以下步骤:处理输入信号以产生表示输入信号的向量序列; 对所述序列的各个向量实施格子矢量量化过程,以识别最接近所述个体矢量的格子的格点,并且获得表示所识别的格点的标记的索引值,所述格子矢量量化过程包括 保留索引组的多级分配,以及一组保留索引内各个向量的索引值的选择。 表示索引值的索引信号被存储然后被恢复用于解码,或者在解码之前传输。 解码操作以获得恢复的向量序列,并且可以处理向量序列以产生输出信号。
    • 7. 发明授权
    • Process for reducing nitrous oxide emission from waste water treatment
    • 从废水处理中减少一氧化二氮排放的方法
    • US5820760A
    • 1998-10-13
    • US884722
    • 1997-06-30
    • Marshall L. Spector
    • Marshall L. Spector
    • C02F3/30C02F3/26
    • C02F3/302Y10S210/903
    • An activated sludge process for reducing the amount of N.sub.2 O released to the atmosphere during biological oxidation of NH.sub.3, includes the following steps: mixing wastewater influent containing NH.sub.3 and BOD with activated sludge to provide a mixed liquor in a first enclosed aerobic treatment zone wherein an oxygen containing gas is introduced, the first enclosed aerobic treatment zone having two or more stages in which gas and liquor phases are staged and oxygen is transferred to the liquid phase and BOD is metabolized and NH.sub.3 is oxidized to NOx and N.sub.2 O, wherein the pN.sub.2 O is maintained at a level greater than 2 mm Hg; transferring the mixed liquor and gas to a second enclosed treatment zone having two or more stages, in which gas and liquid phases are staged, and wherein NOx and N.sub.2 O are reduced to N.sub.2 and an effluent gas is released to the atmosphere; transferring the mixed liquor to a settling zone wherein the activated sludge is separated from the mixed liquor to form a dense sludge and a clear supernatant; and returning at least a portion of the dense sludge to the enclosed aerobic treatment zone.
    • 用于减少在NH 3生物氧化过程中释放到大气中的N2O的量的活性污泥法包括以下步骤:将含有NH 3和BOD的废水进入活性污泥混合,以在第一封闭好氧处理区中提供混合液,其中氧 引入含有气体的第一封闭好氧处理区,其具有两个或更多个阶段,其中气相和液相分相,氧转移到液相中,BOD被代谢,NH 3被氧化成NO x和N 2 O,其中保持pN 2 O 在大于2mm Hg的水平; 将混合液和气体转移到具有两个或更多个阶段的第二封闭处理区,其中气相和液相分阶段进行,并且其中将NOx和N 2 O还原成N 2并且排放气体释放到大气中; 将混合液转移到沉淀区,其中活性污泥与混合液分离以形成致密的污泥和澄清的上清液; 并将至少一部分致密污泥返回到封闭好氧处理区。