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    • 5. 发明申请
    • Video decoding system
    • 视频解码系统
    • US20050195902A1
    • 2005-09-08
    • US11072313
    • 2005-03-07
    • Tae Chung
    • Tae Chung
    • H04N7/24H04N7/12
    • H04N19/423H04N19/44H04N19/61
    • A video decoding system is provided. When a DDR SDRAM is used as an external memory, MBs are rearranged and then stored to minimize memory access operations for the MBs at the DDR SDRAM and unnecessary additional word read operations caused by a DDR characteristic. Accordingly, the video decoding system can efficiently perform a memory access operation on MBs for video display and frame decoding by the video decoder. Specifically, the decoding system can reduce the total video decoding time, thereby allowing a surplus memory use time for additional functions of a digital broadcasting receiver.
    • 提供视频解码系统。 当使用DDR SDRAM作为外部存储器时,重新排列MB,然后存储以最大限度地减少DDR SDRAM上的MB的存储器访问操作以及由DDR特性引起的不必要的附加字读操作。 因此,视频解码系统可以有效地执行用于视频解码器的视频显示和帧解码的MB上的存储器访问操作。 具体地,解码系统可以减少总的视频解码时间,从而允许多余的存储器使用时间用于数字广播接收机的附加功能。
    • 8. 发明申请
    • Video encoding method, video encoder, and personal video recorder
    • 视频编码方式,视频编码器和个人录像机
    • US20060190625A1
    • 2006-08-24
    • US11358031
    • 2006-02-22
    • Tae Chung
    • Tae Chung
    • G06F15/16
    • H04N19/40H04N19/196H04N19/48
    • A video encoding method, a video encoder, and a Personal Video Recorder (PVR) are disclosed. The PVR includes: a first video decoder for decoding an input MPEG-2 video signal, calculating reference picture information of the MPEG-2 video signal and a motion vector of a reference picture, and outputting the calculated result; a first video encoder for encoding the decoded MPEG-2 video signal into a H.264 video signal using the motion vector and the reference picture information generated from the first video decoder; and a storage unit for storing the H.264 video signal generated from the first video encoder. Therefore, the PVR can effectively transcode the MPEG-2 format image into the H.264 format image, can display a desired image or video signal without deterioration of an image quality, and can quickly transform a compression format of the image into another format.
    • 公开了视频编码方法,视频编码器和个人录像机(PVR)。 PVR包括:用于解码输入MPEG-2视频信号的第一视频解码器,计算MPEG-2视频信号的参考图像信息和参考图像的运动矢量,并输出计算结果; 第一视频编码器,用于使用从第一视频解码器生成的运动矢量和参考图像信息将解码的MPEG-2视频信号编码成H.264视频信号; 以及存储单元,用于存储从第一视频编码器生成的H.264视频信号。 因此,PVR可以将MPEG-2格式图像有效地转码为H.264格式的图像,可以显示所需的图像或视频信号而不会降低图像质量,并且可以将图像的压缩格式快速变换为另一种格式。