Apparatus and method for encoding and decoding digital video data
    2.
    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

    IPC分类号: H04N5928

    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。

    Playback method and apparatus for reproducing encoded data in a reverse
playback operation
    5.
    发明授权
    Playback method and apparatus for reproducing encoded data in a reverse playback operation 失效
    用于在反向播放操作中再现编码数据的播放方法和装置

    公开(公告)号:US6058241A

    公开(公告)日:2000-05-02

    申请号:US943378

    申请日:1997-10-03

    摘要: Encoded data is reversely reproduced by decoding each picture only once and using only as many frame memory sections as are needed in a normal playback operation. A picture header detector detects a picture header from data read out from a video code buffer to identify the type of picture The picture type information controls a picture data selecting circuit for selecting frames of I and P pictures equal in number to the number of frame memory sections in a frame memory bank. The selected frames are supplied to an inverse VLC circuit to be decoded, starting at the head of a GOP with an I picture. The decoded I and P pictures are stored in the frame memory bank and transmitted to a display unit, starting with the temporally most recent picture and reading backward.

    摘要翻译: 通过仅对一个图像进行解码而仅使用与正常播放操作中所需的帧存储器部分相同的编码数据。 图像标题检测器从从视频代码缓冲器读出的数据中检测图像标题,以识别图像的类型图像类型信息控制图像数据选择电路,用于选择与帧存储器数量相等的I和P图像的帧数 帧存储器中的部分。 所选择的帧被提供给要被解码的逆VLC电路,从具有I图像的GOP的头开始。 解码的I和P图像被存储在帧存储器中并被发送到显示单元,从时间上最新的图像开始并向后读。

    Data recording method and apparatus, data recorded medium and data reproducing method and apparatus
    7.
    发明授权
    Data recording method and apparatus, data recorded medium and data reproducing method and apparatus 有权
    数据记录方法和装置,数据记录介质和数据再现方法和装置

    公开(公告)号:US06192189B1

    公开(公告)日:2001-02-20

    申请号:US09132159

    申请日:1998-08-10

    IPC分类号: H04N5928

    摘要: A data recording method is provided in which video data and plural channels of language data are divided into packets as units, and the video data and the plural channels of language data are recorded on a record medium along with the control information containing a flag designating a reproducing channel of the language data matched to a reproducing pattern of the video data. Thus it becomes possible to record video data and plural channels of language data on a record medium so that a reproducing channel for the language data matched to the reproducing pattern of the video data will be selected and the plural channels of language data matched to the reproducing pattern and the video data will be reproduced by a reproducing system.

    摘要翻译: 提供了一种数据记录方法,其中视频数据和多个通道的语言数据被分成包作为单位,并且视频数据和多个语言数据通道与包含指定一个标记的标志的控制信息一起被记录在记录介质上 再现与视频数据的再现模式匹配的语言数据的信道。 因此,可以在记录介质上记录视频数据和多个通道的语言数据,使得将选择与视频数据的再现模式相匹配的语言数据的再现通道,并且与再现相匹配的多个通道的语言数据 图案和视频数据将由再现系统再现。

    Data transmission method and apparatus, data decoding apparatus, and
data recording medium
    10.
    发明授权
    Data transmission method and apparatus, data decoding apparatus, and data recording medium 失效
    数据传输方法和装置,数据解码装置和数据记录介质

    公开(公告)号:US5621840A

    公开(公告)日:1997-04-15

    申请号:US432145

    申请日:1995-05-05

    摘要: A video data transmission method and apparatus for transmitting video encoded data with intra-coded video data portions therein suitable for selective high speed reproduction. A first entry point is detected in the encoded data which corresponds to the position of a first intra-coded video data portion. At least one packet is generated on the basis of the decoded first entry point that includes position information relating to at least one second entry point and at least one additional information relating to the video encoded data. The second entry point exists in a forward direction or in a backward direction relative to the first entry point and corresponds to position of at least one second intra-coded video data portion. The packet is multiplexed at a predetermined position of the video encoded data, wherein the multiplexed video encoded data is suitable for selective high speed reproduction of the intra-coded video data portions.

    摘要翻译: PCT No.PCT / JP94 / 01556 Sec。 371日期:1995年5月5日 102(e)日期1995年5月5日PCT 1994年9月21日PCT PCT。 公开号WO95 / 08823 日期1995年3月30日视频数据传输方法和装置,用于传输视频编码数据,其中适合于选择性高速再现的帧内编码视频数据部分。 在对应于第一帧内编码视频数据部分的位置的编码数据中检测到第一入口点。 基于解码的第一入口点生成至少一个分组,该第一入口点包括与至少一个第二入口点有关的位置信息和与视频编码数据有关的至少一个附加信息。 第二入口点相对于第一入口点在向前方向或向后方向上存在,并且对应于至少一个第二帧内编码视频数据部分的位置。 分组在视频编码数据的预定位置被多路复用,其中复用的视频编码数据适合于帧内编码视频数据部分的选择性高速再现。