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1. 发明申请

WO1991012691A2 HD-MAC TELEVISION DECODER 审中-公开
标题翻译： HD-MAC电视解码器
公开(公告)号：WO1991012691A2
公开(公告)日：1991-08-22
申请号：PCT/NL1991000021
申请日：1991-02-08
申请人： N.V. PHILIPS' GLOEILAMPENFABRIEKEN , FRENCKEN, Peter, Hubertus , CROOYMANS, Willem, Peter, Gerardus , VAN OVERMEIRE, Philippe, Antoine, Maurice , COLOMBO, Sandro, Giovanni
发明人： N.V. PHILIPS' GLOEILAMPENFABRIEKEN
IPC分类号： H04N07/00
CPC分类号： H04N7/0155
摘要： An HD-MAC television decoder comprises a 40 ms decoding branch (16-27), and an 80 ms mode decoding branch (38). For decoding 80 ms mode blocks in principle samples from four successively received 80 ms mode blocks are required. An HD-MAC television decoder can do with only three field memories (FM1-FM3) if at temporal mode changes where a sequence of 80 ms mode blocks is followed or preceded by non-80 ms mode blocks, any missing samples required by the 80 ms mode decoder (38) are taken from the output of the 40 ms mode decoder (16-27) by appropriate switching of switch (30).
摘要翻译： HD-MAC电视解码器包括40ms解码分支（16-27）和80ms模式解码分支（38）。对于原则上解码80 ms模式块，需要来自四个连续接收的80 ms模式块的采样。如果在时间模式改变，HD-MAC电视解码器只能执行三个现场存储器（FM1-FM3），其中80 ms模式块的序列被跟随或以前的非80 ms模式块，则80 通过适当切换开关（30），从40ms模式解码器（16-27）的输出中取出ms模式解码器（38）。

2. 发明申请

WO1997011562A1 METHOD AND DEVICE FOR DECODING CODED DIGITAL VIDEO SIGNALS 审中-公开
标题翻译：用于解码编码数字视频信号的方法和装置
公开(公告)号：WO1997011562A1
公开(公告)日：1997-03-27
申请号：PCT/IB1996000959
申请日：1996-09-19
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB , FRENCKEN, Peter, Hubertus
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS NORDEN AB
IPC分类号： H04N07/50
CPC分类号： H04N19/427 , H04N19/423 , H04N19/61
摘要： Conventional MPEG decoders require about 16 Mbits of external memory to contain the input buffer, the two usual reference frames, and the B-information. As proposed earlier, about 2,8 Mbit in memory capacity can be saved by omitting the storage of B-information. According to the invention, a further exchange between memory capacity and internal processing, by MPEG decoding with only one reference frame stored in memory, is proposed: all B and P information required for the reconstruction of display information which cannot directly be retrieved from memory is decoded instantaneously. Three decoding sub-steps are provided in the proposed method and device: a first one for the macroblock parameters, a second one for the picture elements according to a decoding-on-the-fly principle, a third one for the updating of the earlier reference frame after the decoding operation of the later reference frame.
摘要翻译：传统的MPEG解码器需要大约16Mb的外部存储器来包含输入缓冲器，两个通常的参考帧和B信息。如前所述，通过省略B信息的存储，可以节省大约2MB的内存容量。根据本发明，提出了通过仅存储在存储器中的一个参考帧的MPEG解码的存储器容量和内部处理之间的进一步交换：用于重建不能直接从存储器检索的显示信息所需的所有B和P信息是瞬间解码在所提出的方法和装置中提供三个解码子步骤：用于宏块参数的第一个解码子步骤，根据原始译码原理的第二个用于图像元素的第三个解码子步骤，用于更新早期参考帧后解码后的参考帧。

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