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1. 发明授权

US07573938B2 Methods and apparatus for decoding and displaying different resolution video signals 失效
标题翻译：用于解码和显示不同分辨率视频信号的方法和装置
公开(公告)号：US07573938B2
公开(公告)日：2009-08-11
申请号：US11839367
申请日：2007-08-15
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04N7/24 , H04N5/445
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

2. 发明授权

US06563876B2 Methods and apparatus for decoding and displaying high definition and standard definition digital video images at standard definition resolution 失效
标题翻译：用于以标准清晰度分辨率解码和显示高分辨率和标准清晰度数字视频图像的方法和装置
公开(公告)号：US06563876B2
公开(公告)日：2003-05-13
申请号：US09853123
申请日：2001-05-10
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04B166
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

3. 发明授权

US06262770B1 Methods and apparatus for decoding high and standard definition images and for decoding digital data representing images at less than the image's full resolution 失效
标题翻译：用于解码高和标准清晰度图像的方法和装置，以及用于解码以小于图像的全分辨率表示图像的数字数据
公开(公告)号：US06262770B1
公开(公告)日：2001-07-17
申请号：US09069091
申请日：1998-04-28
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04N712
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

4. 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。

5. 发明授权

US08126050B2 Methods and apparatus for decoding and displaying different resolution video signals 失效
标题翻译：用于解码和显示不同分辨率视频信号的方法和装置
公开(公告)号：US08126050B2
公开(公告)日：2012-02-28
申请号：US12497446
申请日：2009-07-02
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04N11/02 , H04N7/12
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

6. 发明授权

US6061402A Methods and apparatus for efficiently decoding bi-directionally coded image data 失效
标题翻译：双向编码图像数据有效解码的方法和装置
公开(公告)号：US6061402A
公开(公告)日：2000-05-09
申请号：US296925
申请日：1999-04-22
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry 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： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

7. 发明授权

US07173970B2 Methods and apparatus for decoding and displaying multiple digital images in parallel 失效
标题翻译：并行解码和显示多个数字图像的方法和装置
公开(公告)号：US07173970B2
公开(公告)日：2007-02-06
申请号：US10136566
申请日：2002-04-30
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04N11/04
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

8. 发明授权

US06249547B1 Methods and apparatus for decoding high definition and standard definition digital video images using a single decoder apparatus 失效
标题翻译：使用单个解码器装置解码高分辨率和标准清晰度数字视频图像的方法和装置
公开(公告)号：US06249547B1
公开(公告)日：2001-06-19
申请号：US09709824
申请日：2000-11-10
申请人： Jill MacDonald Boyce , Larry Pearlstein
发明人： Jill MacDonald Boyce , Larry Pearlstein
IPC分类号： H04B166
CPC分类号： H04N19/00 , G06T3/40 , G06T3/4007 , G06T3/4084 , G11B5/0086 , G11B15/125 , G11B15/1875 , G11B15/4673 , H04N5/4401 , H04N5/45 , H04N5/46 , H04N5/78263 , H04N9/8042 , H04N9/8227 , H04N19/13 , H04N19/30 , H04N19/40 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/91 , H04N21/23106 , H04N21/2343 , H04N21/236 , H04N21/2662 , H04N21/4316 , H04N21/4325 , H04N21/434 , H04N21/4382 , H04N21/4402 , H04N21/440254 , H04N21/440263 , H04N21/4621
摘要： Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
摘要翻译：公开了实现降低成本的HDTV / SDTV视频解码器的方法和装置。所描述的联合视频解码器能够以大约分辨率的标准清晰度电视图像解码HDTV图像，并且可以用于解码HDTV和/或SDTV图像。所描述的视频解码器可以用作画中画解码器电路的一部分，用于在不提供多个全分辨率视频解码器的情况下提供画中画能力。解码器电路复杂度的降低通过使用多种数据简化技术来实现，包括使用预备器，下采样和截取像素值。

9. 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。

10. 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。

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