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DIGITAL VIDEOCATE TRAINING COUNCIL

机译:数字视频培训理事会

摘要

A digital video cassette recorder (300) records a high definition signal having an MPEG compatible structure, such as a proposed Grand Alliance signal. In the recorded format an advanced television frame occupies ten recorded tracks. Reproduction at speeds other than the recorded speed is termed "Trick Play". Reproduction in a "Trick Play" mode necessitates a reproducing head crossing a plurality of recorded tracks. However, since the advanced television signal is structured as groups of pictures comprising one intraframe coded frame and a plurality of predicted frames, many of the recorded tracks contain data representing predicted frames. Thus an advanced television signal reproduced in "Trick Play" may represent a jumble of unrelated data segments. Operation in "Trick Play" may be facilitated by the selection of predetermined replay speeds and the allocation of specific locations within each track from which data may be reproduced. These specific track locations are utilized during recording to place advanced television image data for reproduction during "Trick Play" operation. For generating the "Trick Play" image data the digital video image representative signal is compressed (200) to have a data rate suitable for recorded placement at the specific track locations. The data for the digital video image representative signal and the "Trick Play" image data are multiplexed (340) for recorded placement on said magnetic tape (504) such that said "Trick Play" image data is located at said specific track locations.
机译:数字盒式磁带录像机(300)记录具有MPEG兼容结构的高清晰度信号,例如提出的大联盟信号。在录制的格式中,高级电视帧占据了十个录制的轨道。以录制速度以外的速度进行的复制称为“特技播放”。在“特技播放”模式中的再现需要再现头跨越多个记录的轨道。但是,由于高级电视信号被构造为包括一个帧内编码帧和多个预测帧的图像组,因此许多记录的轨道包含代表预测帧的数据。因此,在“特技播放”中再现的高级电视信号可能表示无关数据段的混杂。通过选择预定的重放速度和在每个磁道内的特定位置的分配,可以促进“特技播放”中的操作,可以从中重放数据。在记录期间利用这些特定的轨道位置来放置高级电视图像数据,以便在“特技播放”操作期间进行再现。为了产生“特技播放”图像数据,数字视频图像代表信号被压缩(200)以具有适合于在特定轨道位置处记录的放置的数据速率。用于数字视频图像代表信号的数据和“特技播放”图像数据被多路复用(340)以记录在所述磁带(504)上,使得所述“特技播放”图像数据位于所述特定磁道位置。

著录项

  • 公开/公告号DE69516513D1

    专利类型

  • 公开/公告日2000-05-31

    原文格式PDF

  • 申请/专利权人 RCA THOMSON LICENSING CORP. PRINCETON;

    申请/专利号DE19956016513T

  • 发明设计人 SAEKI TOMOKI;

    申请日1995-04-03

  • 分类号H04N5/78;H04N5/76;G11B15/12;

  • 国家 DE

  • 入库时间 2022-08-22 01:40:23

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