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    Apparatus and method for encoding and decoding digital video data
    1.
    发明授权
    Apparatus and method for encoding and decoding digital video data 有权
    用于对数字视频数据进行编码和解码的装置和方法

    公开(公告)号：US06363212B1

    公开(公告)日：2002-03-26

    申请号：US09363723

    申请日：1999-07-29

    申请人： Yasushi Fujinami ,  Jun Yonemitsu ,  Makoto Kawamura ,  Yoichi Yagasaki

    发明人： Yasushi Fujinami ,  Jun Yonemitsu ,  Makoto Kawamura ,  Yoichi Yagasaki

    IPC分类号： H04N5928

    CPC分类号： H04N19/89 ,  G06T9/007 ,  G11B27/005 ,  H04N7/52 ,  H04N21/4325 ,  H04N21/4334 ,  H04N21/4341 ,  H04N21/8455

    摘要： Digital video data encoder and decoder operate to enable the low and high speed reproduction of variable rate encoded digital video data by reproducing and decoding intraframe encoded frames that are identified by previously reproduced intraframe encoded frames. In the encoder, digital video data is variable rate encoded, for example, intraframe and interframe encoded, entry points (i.e., beginning positions) of selected encoded video data are identified and which represent video frames that occur at predetermined intervals of time (e.g., 1, 2 and 4 seconds) in the video picture. Entry point data that identify these positions are generated and added to the encoded video data before the video data is recorded on a record medium. When the encoded data is reproduced from the record medium, the entry point data is extracted therefrom and stored, and a successive intraframe encoded frame identified by the extracted entry point data is reproduced and decoded. The invention further provides for a record medium having thereon the encoded digital video data, and also provides for an encoder and corresponding decoder which encode and decode, respectively, digital still image and audio data in which entry points refer to each of the still images and also to particular intervals of time of the audio data.

    摘要翻译： 数字视频数据编码器和解码器通过再现和解码由先前再现的帧内编码帧识别的帧内编码帧来实现可变速率编码数字视频数据的低速和高速再现。 在编码器中，数字视频数据是可变速率编码的，例如，帧内和帧间编码，所选编码视频数据的入口点（即起始位置）被识别，并且代表以预定时间间隔发生的视频帧（例如， 1，2和4秒）。 在将视频数据记录在记录介质上之前，生成识别这些位置的入口点数据并添加到编码视频数据。 当从记录介质再现编码数据时，从其中提取入口点数据并存储，并且再现并解码由提取的入口点数据识别的连续帧内编码帧。 本发明还提供了一种在其上具有编码的数字视频数据的记录介质，并且还提供编码器和对应的解码器，分别编码和解码数字静态图像和音频数据，其中入口点涉及每个静止图像， 也是音频数据的特定时间间隔。