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1. 发明授权

US6141059A Method and apparatus for processing previously encoded video data involving data re-encoding. 失效
标题翻译：用于处理涉及数据重新编码的先前编码的视频数据的方法和装置。
公开(公告)号：US6141059A
公开(公告)日：2000-10-31
申请号：US179074
申请日：1998-10-26
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 , H04N5/272
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。

2. 发明授权

US5887115A Method and apparatus for implementing a video tape recorder for recording digital video signals having either a fixed or variable data transmission rate 失效
标题翻译：用于实现用于记录具有固定或可变数据传输速率的数字视频信号的录像机的方法和装置
公开(公告)号：US5887115A
公开(公告)日：1999-03-23
申请号：US340683
申请日：1994-11-16
申请人： Jill MacDonald Boyce , Frank Anton Lane , Joseph E. Augenbruan
发明人： Jill MacDonald Boyce , Frank Anton Lane , Joseph E. Augenbruan
IPC分类号： G11B5/008 , G11B5/53 , G11B15/02 , G11B15/087 , G11B15/12 , G11B15/18 , G11B15/467 , G11B15/52 , G11B27/00 , H04N5/00 , H04N5/7826 , H04N7/24 , H04N7/26 , H04N7/30 , H04N7/46 , H04N7/50 , H04N7/52 , H04N9/804 , H04N9/82 , H04N5/91 , H04N5/917
CPC分类号： G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , G11B15/52 , G11B27/005 , G11B5/00865 , G11B5/534 , H04N19/00 , 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 , H04N21/44004 , H04N5/783 , H04N9/8042 , G11B15/02 , G11B15/087 , G11B2220/90 , H04N19/13 , H04N19/30 , H04N19/91 , H04N5/78263 , H04N9/8227
摘要： Methods and apparatus for converting digital signals having a variable data rate to fixed data rate signals suitable for recording on a tape by a digital video tape recorder are disclosed. The methods include buffering of the received variable rate data, measuring the data rate of the received data for a fixed period of time and processing the buffered data to converted it into a fixed rate data stream. This processes is repeated for each of the fixed periods of time. Methods for increasing the recording time of a digital video tape recorder ("VTR") and for supporting multiple normal play modes of digital VTR operation, e.g., recording modes for recording SDTV and HDTV are also disclosed. To generate fixed data rate signals from variable data rate signals one or more of data padding and/or data reduction techniques are used. The same data reduction techniques used to generate the fixed rate data stream are used, in accordance with various embodiment of the invention, to reduce the amount of data required to represent a video frame.
摘要翻译：公开了一种用于将具有可变数据速率的数字信号转换成适用于由数字录像机在磁带上记录的固定数据速率信号的方法和装置。这些方法包括缓冲接收到的可变速率数据，测量接收到的数据的数据速率一段固定的时间，并处理缓冲的数据以将其转换为固定速率的数据流。在每个固定时间段内重复该过程。还公开了用于增加数字录像机（“VTR”）的记录时间并用于支持数字VTR操作的多种正常播放模式的方法，例如用于记录SDTV和HDTV的记录模式。为了从可变数据速率信号产生固定数据速率信号，使用一个或多个数据填充和/或数据缩减技术。根据本发明的各种实施例，使用用于生成固定速率数据流的相同数据缩减技术来减少表示视频帧所需的数据量。

3. 发明授权

US5729649A Methods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operation 失效
标题翻译：用于在数字存储介质上以便于在特技播放操作期间回读数据的方式记录数据的方法和装置
公开(公告)号：US5729649A
公开(公告)日：1998-03-17
申请号：US716784
申请日：1996-09-05
申请人： Frank Anton Lane , Joseph Ellis Augenbraun , Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael Allen Plotnick
发明人： Frank Anton Lane , Joseph Ellis Augenbraun , Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael Allen Plotnick
IPC分类号： G11B5/008 , G11B5/09 , G11B15/12 , G11B15/18 , G11B20/12 , G11B27/00 , G11B27/30 , H04N5/44 , H04N5/775 , H04N5/7826 , H04N5/783 , H04N5/93 , H04N5/945 , H04N7/015 , H04N7/26 , H04N7/52 , H04N9/78 , H04N9/79 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/888 , H04N19/89 , H04N5/91
CPC分类号： G11B15/1875 , G11B20/1207 , G11B27/005 , G11B27/3027 , H04N19/37 , H04N19/89 , H04N21/4147 , H04N21/4334 , H04N5/4401 , H04N5/93 , H04N7/015 , H04N7/52 , H04N9/78 , H04N9/8042 , H04N9/8047 , G11B15/125 , G11B2220/90 , G11B5/0086 , G11B5/09 , H04N5/775 , H04N5/78263 , H04N5/78266 , H04N5/783 , H04N5/945 , H04N9/7921 , H04N9/8066 , H04N9/8227 , H04N9/888
摘要： A digital video tape recorder ("VTR") that selects data useful for generating images during trick playback operation and records the data in trick play tape segments arranged on a tape to form fast scan tracks and multi-speed playback tracks. Each fast scan track comprises trick play tape segments located on a diagonal, relative to the length of the tape, of the same angle as the angle at which the heads of a VTR are expected to pass over the tape during trick play operation at a specific speed and direction of operation. Each multi-speed playback track comprises a plurality of trick play tape segments arranged parallel to the length of the tape. Data which is used for at least one mode of trick play operation is recorded in each trick play tape segment. Each fast scan track and multi-speed track crosses multiple normal play tracks. During playback at a wide variety of speeds and directions, the heads pass over enough trick play segments of the multi-speed playback track to generate recognizable images during trick play operation. Data is recorded in each trick play segment in a manner that optimizes the amount of data that can be routinely recovered during trick playback operation despite tracking errors.
摘要翻译：一种数字录像机（“VTR”），其选择在特技播放操作期间生成图像的数据，并将数据记录在布置在磁带上的特技播放磁带段中以形成快速扫描轨道和多速重放轨道。每个快速扫描轨道包括相对于磁带长度位于对角线上的特技播放磁带段，其角度与在特定播放操作期间期望VTR的磁头经过磁带的角度相同的角度速度和操作方向。每个多速播放轨道包括平行于磁带的长度布置的多个特技播放磁带片段。用于至少一种特技播放操作模式的数据被记录在每个特技播放磁带段中。每个快速扫描轨道和多速度轨道穿过多个正常播放轨道。在以各种各样的速度和方向播放期间，头部通过多速播放轨道的足够的特技播放段，以在特技播放操作期间产生可识别的图像。数据被记录在每个特技播放段中，以尽可能优化在特技重放操作期间常规恢复的数据量，尽管跟踪错误。

4. 发明授权

US5687275A Trick play data indentification methods and apparatus for use with digital video recording and playback devices 失效
标题翻译：用于数字视频录制和播放设备的特技播放数据识别方法和设备
公开(公告)号：US5687275A
公开(公告)日：1997-11-11
申请号：US463336
申请日：1995-06-05
申请人： Frank Anton Lane , Joseph Ellis Augenbraun , Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael Allen Plotnick
发明人： Frank Anton Lane , Joseph Ellis Augenbraun , Jill MacDonald Boyce , Jack Selig Fuhrer , John Goodchilde Norie Henderson , Katsuo Mohri , Masafumi Nakamura , Takaharu Noguchi , Hiroo Okamoto , Masuo Oku , Michael Allen Plotnick
IPC分类号： G11B5/008 , G11B5/09 , G11B15/12 , G11B15/18 , G11B20/12 , G11B27/00 , G11B27/30 , H04N5/44 , H04N5/775 , H04N5/7826 , H04N5/783 , H04N5/93 , H04N5/945 , H04N7/015 , H04N7/26 , H04N7/52 , H04N9/78 , H04N9/79 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/888 , H04N19/89 , H04N5/91
CPC分类号： G11B15/1875 , G11B20/1207 , G11B27/005 , G11B27/3027 , H04N19/37 , H04N19/89 , H04N21/4147 , H04N21/4334 , H04N5/4401 , H04N5/93 , H04N7/015 , H04N7/52 , H04N9/78 , H04N9/8042 , H04N9/8047 , G11B15/125 , G11B2220/90 , G11B5/0086 , G11B5/09 , H04N5/775 , H04N5/78263 , H04N5/78266 , H04N5/783 , H04N5/945 , H04N9/7921 , H04N9/8066 , H04N9/8227 , H04N9/888
摘要： Methods of operating a digital video recording and playback device to identify trick play data, e.g., data that is intended for use during trick play modes of video playback device operation such as fast forward and reverse, by recording headers containing specific trick play information along with the trick play data are described. In one embodiment, the recording of headers which identify data as data intended for use during trick play as opposed to normal play operation is described. In addition to identifying data recorded data as normal play or trick play data headers associated with recorded data may identify the speed and direction of video tape recorder operation during which the specific data associated with the header is intended to be displayed at. When a data block includes data packets, a header may be used to identify various ones of the data packets as being for use during one mode of trick play operation, e.g., a first fast forward speed of operation, and other packets in the same data block as being for use during a second mode of trick play operation.
摘要翻译：操作数字视频记录和回放设备以识别特技播放数据的方法，例如，通过记录包含特定特技播放信息的标题以及包含特定的特技播放信息的标题，以及诸如快进和反向的视频播放设备操作的特技播放模式期间使用的数据，以及描述特技播放数据。在一个实施例中，描述了与正常播放操作相反，标识数据作为要在特技播放期间使用的数据的标题的记录。除了将数据记录的数据识别为正常播放或与记录的数据相关联的特技播放数据头可以识别录像机操作的速度和方向，在此期间，与标题相关联的特定数据将被显示在其上。当数据块包括数据分组时，可以使用报头来将各种数据分组识别为在特技播放操作的一种模式期间使用，例如，第一快进操作速度和相同数据中的其他分组作为在特技播放操作的第二模式期间使用的块。

5. 发明授权

US5684539A Method and apparatus for processing encoded video data to reduce the amount of data used to represent a video image 失效
标题翻译：用于处理编码视频数据以减少用于表示视频图像的数据量的方法和装置
公开(公告)号：US5684539A
公开(公告)日：1997-11-04
申请号：US694904
申请日：1996-08-09
申请人： Jill MacDonald Boyce , Frank Anton Lane , Larry Pearlstein
发明人： Jill MacDonald Boyce , Frank Anton Lane , Larry Pearlstein
IPC分类号： H04N5/783 , H04N7/26 , H04N7/46 , H04N9/804 , H04N7/12
CPC分类号： H04N9/8042 , H04N19/40 , H04N19/537 , H04N19/577 , H04N9/8045 , H04N5/783
摘要： Methods and apparatus for processing digital video data to reduce the amount of video data required to represent a video frame by representing a frame or pair of field pictures into a single field of a pair of field picture are described. To prevent the second field of the field picture from being displayed a DSM byte associated with the field picture is set so that only the field representing the video frame is displayed. A field, e.g., a transparent predictively coded field is used as the field picture which is not displayed. In this manner, very little data is required to represent the field picture that is not displayed. When the received frames are represented as pairs of field pictures a single field of the pair of field pictures is selected to represent the video frame with the other field picture being replaced with a field which requires very little data. When frame pictures are received one of a plurality of numerous described methods of mapping frame pictures into a single field of a pair of field pictures are used to convert the frame picture into a single field of a pair of field pictures. A plurality of methods for reducing the amount of data required to represent the single field of the pair of field pictures are also described.
摘要翻译：描述了通过将一帧或一对场图像表示成一对场图像的单个场来处理数字视频数据以减少表示视频帧所需的视频数据量的方法和装置。为了防止场图像的第二场被显示，设置与场图像相关联的DSM字节，使得仅显示表示视频帧的场。使用例如透明的预测编码字段的字段作为不显示的场图像。以这种方式，需要非常少的数据来表示不显示的场图像。当接收到的帧被表示为场图像对时，选择一对场图像对中的单个场来表示视频帧，而另一个场图像被替换为需要非常少的数据的场。当帧图像被接收时，将帧图像映射到一对场图像的单个场中的多种众所周知的方法之一用于将帧图像转换成一对场图像的单个场。还描述了用于减少表示一对场图像的单个场所需的数据量的多种方法。

6. 发明授权

US06621867B1 Methods and apparatus for detecting edges within encoded images 失效
标题翻译：用于检测编码图像中的边缘的方法和装置
公开(公告)号：US06621867B1
公开(公告)日：2003-09-16
申请号：US09390274
申请日：1999-09-07
申请人： Sharif Mohammad Sazzad , Frank Anton Lane
发明人： Sharif Mohammad Sazzad , Frank Anton Lane
IPC分类号： H04N712
CPC分类号： H04N5/142 , G06T7/12 , G06T2207/10016 , G06T2207/20052
摘要： Edge detection methods and apparatus which utilize the dc dct differential data included in encoded images, e.g., an MPEG-2 encoded video stream, are described. Use of the dc dct differential data allows efficient methods for detecting the presence of edges within encoded images. The edge detection methods and apparatus of the present invention can be used where differential coding of the DC DCT coefficients is employed. Accordingly, the edge detection methods of the present invention are applicable to MPEG-2 encoded images as well as other differentially encoded images.
摘要翻译：描述利用包括在编码图像中的直流dct差分数据（例如MPEG-2编码视频流）的边缘检测方法和装置。使用直流差分数据可以有效地检测编码图像中边缘的存在。在采用DC DCT系数的差分编码的情况下，可以使用本发明的边缘检测方法和装置。因此，本发明的边缘检测方法可应用于MPEG-2编码图像以及其它差分编码图像。

7. 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。

8. 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。

9. 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。

10. 发明授权

US5659583A Tone canceller for QAM demodulator 失效
标题翻译：音频消除器用于QAM解调器
公开(公告)号：US5659583A
公开(公告)日：1997-08-19
申请号：US460586
申请日：1995-06-02
申请人： Frank Anton Lane
发明人： Frank Anton Lane
IPC分类号： H03H17/00 , H04B1/10 , H04B3/04 , H04L27/01 , H04L27/38
CPC分类号： H04L27/3872 , H04B1/1027
摘要： Techniques in a QAM digital communication system for canceling one or more interference tones in an incoming signal to produce an output signal by generating an estimate of the interference tone during the current processing interval, subtracting the estimate to produce the output signal, and modifying, if necessary, adaptive circuitry for use during the next processing interval. Techniques which apply either at passband or at baseband, that is, before or after mixing the incoming signal with the recovered carrier, are disclosed. The adaptive circuitry includes a single weighting parameter or an adaptive filer. Passband techniques utilize rerotation of baseband signals to appropriately align the spectra of the processed signals.
摘要翻译：一种QAM数字通信系统中的技术，用于通过在当前处理间隔期间产生干扰音调的估计来消除输入信号中的一个或多个干扰音调以产生输出信号，减去估计值以产生输出信号，以及如果必要的，在下一个处理间隔期间使用的自适应电路。公开了在通带或基带处应用的技术，即在将输入信号与回收的载体混合之前或之后的技术。自适应电路包括单个加权参数或自适应滤波器。通带技术利用基带信号的重新旋转来适当地对准处理信号的频谱。

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