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11. 发明授权

US5987468A Structure and method for efficient parallel high-dimensional similarity join 失效
标题翻译：高效平行高维相似性联合的结构与方法
公开(公告)号：US5987468A
公开(公告)日：1999-11-16
申请号：US989847
申请日：1997-12-12
申请人： Vineet Singh , Khaled Alsabti , Sanjay Ranka
发明人： Vineet Singh , Khaled Alsabti , Sanjay Ranka
IPC分类号： G06F15/173 , G06F12/00 , G06F17/30
CPC分类号： G06F17/30327 , G06F17/30333 , Y10S707/99936 , Y10S707/99937
摘要： Multidimensional similarity join finds pairs of multi-dimensional points that are within some small distance of each other. Databases in domains such as multimedia and time-series can require a high number of dimensions. The .epsilon.-k-d-B tree has been proposed as a data structure that scales better as number of dimensions increases compared to previous data structures such as the R-tree (and variations), grid-file, and k-d-B tree. We present a cost model of the .epsilon.-k-d-B tree and use it to optimize the leaf size. This new leaf size is shown to be better in most situations compared to previous work that used a constant leaf size. We present novel parallel procedures for the .epsilon.-k-d-B tree. A load-balancing strategy based on equi-depth histograms is shown to work well for uniform or low-skew situations, whereas another based on weighted, equi-depth histograms works far better for high-skew datasets. The latter strategy is only slightly slower than the former strategy for low skew datasets. The weights for the latter strategy are based on the same cost model that is used to determine optimal leaf sizes.
摘要翻译：多维相似联合找到彼此在一些小距离内的多维点对。域中的数据库（如多媒体和时间序列）可能需要大量的维度。已经提出了epsilon -k-d-B树作为数据结构，与先前的数据结构（如R-tree（和变体），网格文件和k-d-B树）相比，维度数量的增加更好。我们提出了一个eps-k-d-B树的成本模型，并用它来优化叶尺寸。与使用恒定叶尺寸的以前的工作相比，在大多数情况下，新叶尺寸显示出更好。我们提出了epsilon -k-d-B树的新颖并行程序。基于等深度直方图的负载平衡策略被显示为均匀或低偏移情况下工作良好，而基于加权的等深度直方图的另一个对于高偏斜数据集的工作更好。后一种策略仅比低偏差数据集的前一种策略略慢。后一种策略的权重基于用于确定最佳叶尺寸的相同成本模型。

12. 发明授权

US5974185A Methods and apparatus for encoding video data using motion vectors for decoding by regular or downconverting decoders 失效
标题翻译：使用运动矢量编码视频数据的方法和装置，用于通过常规或下变频解码器进行解码
公开(公告)号：US5974185A
公开(公告)日：1999-10-26
申请号：US100632
申请日：1998-06-19
申请人： Jill Boyce , Larry Pearlstein
发明人： Jill Boyce , Larry Pearlstein
IPC分类号： G06T9/00 , H04N7/46 , H04N7/50 , G06K9/36
CPC分类号： H04N19/59 , H04N19/61
摘要： Plurality of encoding methods and apparatus for encoding video data in a manner that makes it well suited for decoding by either regular or downconverting decoders are described. In one embodiment, the selection and/or generation of motion vectors by an encoder is controlled so that only motion vectors having a size that corresponds to an integer multiple of a downsampling rate expected to be used by a downconverting decoder are generated and/or selected. In another embodiment, motion vectors having a size which corresponds to an integer multiple of an expected downsampling rate are preferred over other motion vectors. In various additional encoder embodiments feedback circuitry which models a downconverting decoder, and/or which provides feedback information on downconverted images generated by decoding the compressed video data generated by the encoder using a downconverting decoder, are incorporated into the encoder of the present invention.
摘要翻译：描述了以通过正常或下变频解码器进行解码的方式对视频数据进行编码的多种编码方法和装置。在一个实施例中，由编码器选择和/或产生运动矢量被控制，使得仅仅生成和/或选择具有对应于预期由下变频解码器使用的下采样率的整数倍的大小的运动矢量。在另一实施例中，具有对应于预期下采样率的整数倍的大小的运动矢量优于其它运动矢量。在各种附加的编码器实施例中，对下变频解码器进行建模的反馈电路和/或提供关于通过使用下变频解码器解码由编码器产生的压缩视频数据而产生的下变频图像的反馈信息被并入本发明的编码器中。

13. 发明授权

US5940450A Carrier recovery method and apparatus 失效
标题翻译：载体回收方法和装置
公开(公告)号：US5940450A
公开(公告)日：1999-08-17
申请号：US807565
申请日：1997-02-28
申请人： Joshua L. Koslov , Frank A. Lane
发明人： Joshua L. Koslov , Frank A. Lane
IPC分类号： H04L27/227 , H04L27/38 , H04L27/06
CPC分类号： H04L27/3827
摘要： Improved carrier recovery methods and apparatus suitable for use with QAM, QPSK and a wide variety of other modulation formats is described. In accordance with the invention, the phase error between received symbols, representing a frequency error, is determined using one of a plurality of techniques. The estimated frequency error is used to adjust the phase and/or frequency of a received carrier signal to achieve a frequency lock. The methods and apparatus of the present invention can be easily integrated into existing carrier recovery designs to supplement known frequency In accordance with a first embodiment of the present invention, the receipt of pairs of consecutive outer symbols is detected, a frequency error associated with each pair of consecutive symbols is generated, and the frequency error is compared to a selected threshold value to determine if it is a non-ambiguous estimate of the frequency error. If the frequency error is non-ambiguous and from a pair of consecutive outer symbols, it is used to adjust the frequency and/or phase of a received carrier signal. In the second embodiment, the receipt of pairs of consecutive outer symbols are detected. An estimate of the frequency error, determined as the phase error between received symbols, is made in the second embodiment by doing a symbol to symbol, as opposed to a symbol to target comparison.
摘要翻译：描述了适用于QAM，QPSK和各种其他调制格式的改进的载波恢复方法和装置。根据本发明，使用多种技术之一确定表示频率误差的接收符号之间的相位误差。估计的频率误差用于调整接收的载波信号的相位和/或频率以实现频率锁定。本发明的方法和装置可以容易地集成到现有的载波恢复设计中以补充已知频率。根据本发明的第一实施例，检测到连续外部符号对的接收，与每对相关联的频率误差生成连续符号，并将频率误差与选定的阈值进行比较，以确定其是否是频率误差的非模糊估计。如果频率误差是非歧义的，并且来自一对连续的外部符号，则用于调整接收的载波信号的频率和/或相位。在第二实施例中，检测到连续外部符号对的接收。在第二实施例中，通过对符号进行符号，而不是将符号与目标对比进行比较，在频率误差的估计中被确定为接收符号之间的相位误差。

14. 发明授权

US5828421A Implementation efficient digital picture-in-picture decoding methods and apparatus 失效
标题翻译：实现高效数字画中画解码方法和装置
公开(公告)号：US5828421A
公开(公告)日：1998-10-27
申请号：US468147
申请日：1995-06-06
申请人： Jill MacDonald Boyce , Larry Pearlstein , Frank Anton Lane
发明人： Jill MacDonald Boyce , Larry Pearlstein , Frank Anton Lane
IPC分类号： G06T3/40 , G06T9/00 , H04N5/44 , H04N5/445 , H04N5/45 , H04N5/46 , H04N7/24 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N21/431 , H04N21/4402
CPC分类号： H04N5/45 , G06T3/4084 , H04N19/122 , H04N19/132 , H04N19/159 , H04N19/162 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/427 , H04N19/428 , H04N19/44 , H04N19/48 , H04N19/59 , H04N19/61 , H04N21/4316 , H04N21/440254 , H04N5/4401 , H04N5/44504 , H04N5/44508 , H04N19/13 , H04N19/30 , H04N19/91 , H04N5/46
摘要： An implementation efficient video decoder suitable for use as a picture in picture decoder is described. In one embodiment, the video decoder receives primary and secondary bitstreams with the secondary bitstream including the video data intended to be displayed as inset pictures. The decoder uses many of the same circuit components on a time shared basis to decode both the main and inset pictures reducing the amount of circuitry required to implement the decoder. In one embodiment a preparser discards the majority of DCT coefficients in the secondary bitstream and the remaining data is variable length decoded and then variable length encoded using a non-MPEG compliant coding scheme prior to storing the inset picture data in a coded data buffer. Re-encoding of the selected inset picture data in this manner greatly reduces data storage requirements and simplifies the circuitry required to subsequently decode the inset picture data. To reduce frame memory requirements inset picture data is downsampled, stored and then upsampled prior to display thereby reducing inset picture frame memory buffer requirements.
摘要翻译：描述适用于图像解码器的实现高效视频解码器。在一个实施例中，视频解码器接收主要和次要比特流，其中次要比特流包括旨在被显示为插图的视频数据。解码器在时间共享的基础上使用许多相同的电路组件来解码主图像和插图，以减少实现解码器所需的电路的数量。在一个实施例中，准备器丢弃次级比特流中的大多数DCT系数，并且剩余数据被可变长度解码，然后在将插入图像数据存储在编码数据缓冲器中之前使用非MPEG兼容编码方案进行可变长度编码。以这种方式重新编码所选择的插图图像数据大大减少了数据存储要求，并且简化了随后解码嵌入图像数据所需的电路。为了减少帧存储器要求，画面数据被下采样，存储，然后在显示之前进行上采样，从而减少对画面帧存储器缓冲器的要求。

15. 发明授权

US5805762A Video recording device compatible transmitter 失效
标题翻译：录像设备兼容发射机
公开(公告)号：US5805762A
公开(公告)日：1998-09-08
申请号：US228949
申请日：1994-04-18
申请人： Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Frank Anton Lane , Michael Allen Plotnick
发明人： Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Frank Anton Lane , Michael Allen Plotnick
IPC分类号： G11B5/008 , G11B15/12 , G11B15/18 , G11B15/467 , H04N5/7826 , H04N5/783 , H04N7/26 , H04N7/30 , H04N7/46 , H04N7/50 , H04N9/804 , H04N9/82 , H04N21/236 , H04N21/2662 , H04N21/4147 , H04N21/434 , H04N5/91
CPC分类号： H04N19/00 , G11B5/0086 , H04N19/132 , H04N19/184 , H04N19/192 , H04N19/37 , H04N19/40 , H04N19/427 , H04N19/428 , H04N19/587 , H04N19/59 , H04N19/60 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/90 , H04N21/4147 , H04N21/4325 , H04N21/4334 , H04N21/434 , H04N5/783 , H04N9/8042 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N19/13 , H04N19/30 , H04N19/91 , H04N5/78263 , H04N9/8227
摘要： A device for transmitting digital packetized video and audio data is disclosed. The transmitter includes a video encoder, a prioritizer, and a packetizer. The video encoder receives video signals and encodes the video signals into a digital video data stream including codewords. The video encoder also generates motion vectors and fully intra-coded video frames for use by a video tape recorder during trick play operation. The prioritizer is coupled to the video encoder. The prioritizer receives the digital video data stream and prioritizes the video data according to a preselected prioritization scheme optimized for identifying data useful to video tape recorder trick play operation. The preselected prioritization scheme assigns the video codewords in the video data stream to a priority level according to the utility of each video codeword for video tape recorder recording and playback operation and outputs both the video codewords and a priority level signal. The video codewords and the priority level signal are supplied to a transport packetizer which packetizes the video codewords and associates a header with each packet. The headers contain information identifying the assigned priority level of the codewords in each packet. This makes it possible for a video tape recorder receiving the video packets to determine the utility of the codewords in a given packet from the priority level information in the packet headers.
摘要翻译：公开了一种用于发送数字分组视频和音频数据的设备。发射机包括视频编码器，优先级分类器和打包器。视频编码器接收视频信号并将视频信号编码成包括码字的数字视频数据流。视频编码器还产生运动矢量和完全帧内编码的视频帧，以便在特技播放操作期间由磁带录像机使用。优先化器耦合到视频编码器。优先级排序器接收数字视频数据流，并根据为识别对磁带录像机特技播放操作有用的数据而优化的预选优先级方案来对视频数据进行优先级排序。预选择的优先化方案根据用于录像机记录和重放操作的每个视频码字的效用将视频数据流中的视频码字分配到优先级，并输出视频码字和优先级信号。视频码字和优先级信号被提供给传输分组器，其将视频码字分组化并将标题与每个分组相关联。标题包含识别每个分组中的码字的分配优先级的信息。这使得接收视频分组的磁带录音机可以根据分组报头中的优先级信息确定给定分组中码字的效用。

16. 发明授权

US5793927A Methods for monitoring and modifying a trick play data stream to insure MPEG compliance 失效
标题翻译：用于监视和修改特技播放数据流以确保符合MPEG的方法
公开(公告)号：US5793927A
公开(公告)日：1998-08-11
申请号：US481022
申请日：1995-06-07
申请人： Frank Lane
发明人： Frank Lane
IPC分类号： H04N5/783 , G11B15/087 , G11B15/18 , G11B15/467 , G11B20/10 , G11B27/00 , G11B27/10 , G11B27/30 , H04N5/7826 , H04N5/92 , H04N5/926 , H04N5/945 , H04N7/26 , H04N9/804 , H04N9/82
CPC分类号： H04N9/8042 , G11B15/087 , G11B15/1875 , G11B27/005 , G11B27/105 , G11B27/107 , G11B27/3027 , G11B27/3036 , H04N5/9262 , G11B15/4675 , G11B20/10 , G11B2220/20 , G11B2220/2545 , G11B2220/90 , H04N5/78263 , H04N5/783 , H04N5/9268 , H04N5/945 , H04N9/8227
摘要： Methods and apparatus for insuring that a trick play data stream, e.g., a stream of data used for fast forward or reverse playback operation, complies with preselected data standards and in particular the MPEG-2 standard are disclosed. Various methods are described for generating PCR, PTS and DTS values for a trick play data stream, which is generated from a normal play data steam, and is intended for recording in trick play segments of a tape. The described methods include generating new PCR, PTS and DTS values as a function of the trick play speed at which the data is intended to be read back. Methods and apparatus for correcting PCR, PTS and DTS values read from a tape during trick playback operation are also disclosed. The disclosed methods are directed to generating new PCRs, PTSs and DTSs to provide am MPEG-2 compliant bitstream. The described methods and apparatus are applicable to a plurality of storage and playback devices capable of implementing trick play including compact disks.
摘要翻译：公开了用于确保特技播放数据流（例如用于快进或反向重放操作的数据流）符合预选数据标准，特别是MPEG-2标准的方法和装置。描述了用于生成从正常播放数据蒸汽产生的特技播放数据流的PCR，PTS和DTS值的各种方法，并且用于在磁带的特技播放段中进行记录。所描述的方法包括产生新的PCR，PTS和DTS值作为要读取数据的特技播放速度的函数。还公开了在特技重放操作期间从带读取的用于校正PCR，PTS和DTS值的方法和装置。所公开的方法涉及生成新的PCR，PTS和DTS以提供符合MPEG-2的比特流。所描述的方法和装置适用于能够实现包括光盘的特技播放的多个存储和重放装置。

17. 发明授权

US5767907A Drift reduction methods and apparatus 失效
标题翻译：漂移方法和装置
公开(公告)号：US5767907A
公开(公告)日：1998-06-16
申请号：US884746
申请日：1997-06-30
申请人： Larry A. Pearlstein
发明人： Larry A. Pearlstein
IPC分类号： H04N7/30 , G06T3/40 , G06T9/00 , G11B5/008 , G11B15/12 , G11B15/18 , G11B15/467 , H03M7/00 , H04N5/44 , H04N5/45 , H04N5/46 , H04N5/7826 , H04N7/015 , H04N7/24 , H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50 , H04N9/804 , H04N9/82 , H04N21/231 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/431 , H04N21/432 , H04N21/434 , H04N21/438 , H04N21/4402 , H04N21/462
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/16 , H04N19/162 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/192 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/427 , H04N19/428 , H04N19/44 , H04N19/46 , H04N19/48 , H04N19/51 , H04N19/513 , H04N19/587 , H04N19/59 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/82 , H04N19/90 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N9/8042 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N19/13 , H04N19/30 , H04N19/91 , H04N5/78263 , H04N9/8227
摘要： A video decoder capable of downsampling full resolution images on a block by block basis regardless of the downsampling rate is disclosed. When the applied downsampling rate does not divide evenly into the number of pixel values included in a block in the dimension being downsampled, the decoder generates a partial pixel value. A partial pixel value represents a portion of the information used to represent a pixel of an image. In contrast, a full or complete pixel value is a value represents all the information used to represent a pixel of an image. The generated partial pixel value is stored and then added to another partial pixel value generated by downsampling another block of pixel values corresponding to a portion of a full resolution image. Numerous drift reduction processing techniques applicable to downsampling decoders are disclosed. Many of these processing techniques are applicable to decoders which perform full order IDCTs as well as reduced order IDCTs. In one embodiment, spatial filtering is applied to anchor frames as part of the motion compensation process in order to reduce or eliminate drift. The spatial filtering is performed as a function of the location of the current block being decoded, the location within the anchor frame of the data being used for prediction purposes, and the motion vector being applied. Various drift reduction techniques applicable to interlaced and non-interlaced images are also described with drift reduction processing for interlaced images being applied differently than for non-interlaced images. In order to maximize the benefit from limited drift reduction processing resources, in various embodiments the amount of drift reduction processing is varied depending on the type of data being processed, e.g., more drift reduction processing is performed on uni-directionally encoded blocks than bi-directionally encoded blocks.
摘要翻译：公开了一种视频解码器，其能够逐个级别地对全分辨率图像进行下采样，而不管下采样率如何。当所施加的下采样率不被均匀地划分为被下采样的维度中包括的块中的像素值的数量时，解码器生成部分像素值。部分像素值表示用于表示图像的像素的信息的一部分。相反，完整或完整的像素值是表示用于表示图像的像素的所有信息的值。生成的部分像素值被存储，然后被添加到通过对对应于全分辨率图像的一部分的另一块像素值进行下采样而生成的另一部分像素值。公开了适用于下采样解码器的许多漂移减少处理技术。这些处理技术中的许多技术适用于执行完整订单IDCT以及减少订单IDCT的解码器。在一个实施例中，为了减少或消除漂移，将空间滤波应用于锚帧作为运动补偿处理的一部分。空间滤波是根据当前被解码的块的位置，被用于预测目的的数据的锚定帧内的位置以及应用的运动矢量来执行的。还描述了适用于隔行扫描图像和非隔行图像的各种漂移减少技术，其中对于隔行扫描图像的漂移减少处理不同于非隔行扫描图像。为了最大限度地利用有限漂移减少处理资源的优点，在各种实施例中，漂移减少处理的量根据正在处理的数据的类型而变化，例如，对单向编码块执行比双向编码块更多的漂移减少处理，定向编码块。

18. 发明授权

US5742781A Decoded instruction buffer apparatus and method for reducing power consumption in a digital signal processor 失效
标题翻译：用于降低数字信号处理器中的功耗的解码指令缓冲装置和方法
公开(公告)号：US5742781A
公开(公告)日：1998-04-21
申请号：US694669
申请日：1996-08-09
申请人： Raminder Singh Bajwa
发明人： Raminder Singh Bajwa
IPC分类号： G06F9/32 , G06F9/38 , G06F9/30 , G06F1/32
CPC分类号： G06F9/382 , G06F9/325 , G06F9/3802 , G06F9/3808 , G06F9/381
摘要： The present invention is directed to a digital signal processor having a local buffer for storing decoded instruction words during the first pass through a program loop, so that subsequent iterations through the program loop can be accomplished without the use of the instruction fetch and decode circuitry, thereby saving power.
摘要翻译：本发明涉及一种数字信号处理器，其具有用于在首次通过程序循环期间存储解码的指令字的本地缓冲器，从而可以在不使用指令提取和解码电路的情况下完成通过程序循环的后续迭代，从而节约电力。

19. 发明授权

US5720266A Control system for a gaseous fuel internal combustion engine utilizing PID gain scheduling parameters 失效
标题翻译：采用PID增益调度参数的气体燃料内燃机控制系统
公开(公告)号：US5720266A
公开(公告)日：1998-02-24
申请号：US707321
申请日：1996-09-03
申请人： Toshiharu Nogi , George Saikalis
发明人： Toshiharu Nogi , George Saikalis
IPC分类号： F02B77/08 , F02D41/00 , F02D41/14
CPC分类号： F02D41/1477 , F02B77/083 , F02D19/023 , F02D19/027 , F02D41/0027 , Y02T10/32
摘要： A fuel control system is provided for use with an internal combustion engine having at least one cylinder, a source of gaseous fuel and an intake passageway for fluidly connecting the air intake to the combustion cylinder. The control system includes a gas flow rate sensor which generates an output signal representative of the fuel flow rate to the engine as well as a mass air flow sensor which generates a signal representative of the mass air flow rate to the engine. A fuel valve is fluidly connected in series between the source of gaseous fuel and the air intake passageway. The fuel valve is actuated by an electrical pulse stream between an open and a closed position so that the duty cycle of the pulse stream is proportional to the amount of fuel supplied to the engine. In response to the fuel flow rate signal, the air flow rate signal and a target air/fuel ratio, the control system generates PID gain scheduling parameters relative to the duty cycle of the pulse stream. The system then varies the duty cycle of the pulse stream as a function of the PID gain scheduling parameters to obtain the target air/fuel ratio. Optionally, an air/fuel sensor generates an output signal representative of the actual air/fuel ratio supplied to the engine. This signal is compared to the target air/fuel ratio and utilized to generate second PID gain scheduling parameters to further modify the duty cycle of the pulse stream in order to obtain the target air/fuel ratio.
摘要翻译：燃料控制系统被提供用于具有至少一个气缸，气体燃料源和用于将进气流体连接到燃烧气缸的进气通道的内燃机。控制系统包括气体流量传感器，该气体流量传感器产生代表向发动机的燃料流量的输出信号，以及产生代表向发动机的质量空气流量的信号的质量空气流量传感器。燃料阀在气态燃料源和进气通道之间串联流体连接。燃料阀由打开和关闭位置之间的电脉冲流驱动，使得脉冲流的占空比与供给发动机的燃料量成比例。响应于燃料流量信号，空气流量信号和目标空气/燃料比，控制系统相对于脉冲流的占空比生成PID增益调度参数。然后系统根据PID增益调度参数改变脉冲流的占空比，以获得目标空燃比。可选地，空气/燃料传感器产生表示提供给发动机的实际空气/燃料比的输出信号。将该信号与目标空燃比进行比较，并用于产生第二PID增益调度参数，以进一步修改脉冲流的占空比，以获得目标空燃比。

20. 发明授权

US5694419A Shared resource modulator-demodulator circuits for use with vestigial sideband signals 失效
标题翻译：用于残留边带信号的共享资源调制器 - 解调器电路
公开(公告)号：US5694419A
公开(公告)日：1997-12-02
申请号：US554697
申请日：1995-11-07
申请人： Koslov Joshua Lawrence , Frank Anton Lane , Carl G. Scarpa
发明人： Koslov Joshua Lawrence , Frank Anton Lane , Carl G. Scarpa
IPC分类号： H04B1/68 , H04L27/00 , H04L27/02
CPC分类号： H04B1/68 , H04L27/0008 , H04L27/02
摘要： A common transceiver circuit for use as either a modulator or demodulator and that is implemented through a shared resource approach. This approach is particularly, though not exclusively, suited for vestigial sideband (VSB) signals. Specifically, a VSB transceiver circuit (700), through strategically located multiplexing stages, physically re-uses a complex vestigial Nyquist filter (610), a complex mixer (620) and an equalizer (785) during demodulation and modulation. The VSB transceiver also selects a particular configuration of a common complex Hilbert transform circuit (720) for use during either demodulation or modulation. In addition, the same equalizer selectively provides both channel equalization, during de-modulation, and (sin x)/x compensation, during modulation, through use of differing corresponding sets of tap coefficients.
摘要翻译：用作调制器或解调器的通用收发器电路，通过共享资源方法实现。该方法特别地，尽管不是排他地适用于残留边带（VSB）信号。具体地说，在解调和调制期间，通过策略地定位的多路复用级的VSB收发器电路（700）在物理上重新使用复杂的残余奈奎斯特滤波器（610），复合混频器（620）和均衡器（785）。 VSB收发器还选择在解调或调制期间使用的公共复合希尔伯特变换电路（720）的特定配置。此外，相同的均衡器通过使用不同对应的抽头系数组，在调制期间，在去调制期间和（sin x）/ x补偿期间选择性地提供信道均衡。

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