公开(公告)号：US5268751A

公开(公告)日：1993-12-07

申请号：US868339

申请日：1992-04-15

Applicant: Erich Geiger ,  Hans-Joachim Platte ,  Martin Plantholt ,  Dietrich Westerkamp ,  Uwe Riemann ,  Dietmar Hepper

Inventor： Erich Geiger ,  Hans-Joachim Platte ,  Martin Plantholt ,  Dietrich Westerkamp ,  Uwe Riemann ,  Dietmar Hepper

IPC: H04N7/015 ,  H04N7/00 ,  H04N7/01 ,  H04N7/08 ,  H04N7/081 ,  H04N11/00 ,  H04N11/16 ,  H04N11/24

CPC classification number: H04N11/167 ,  H04N7/007

Abstract: In the process of generating a compatible 4:3 letterbox format television signal, a wide aspect ration 16:9 progressive scan television signal is vertically transcoded from 575 to 431 image lines, converted to line interlaced form and horizontally compressed. A vertically transcoded interlaced luminance component is converted back to progressive scan form via interpolation, and subtracted from a vertically transcoded original progressive scan luminance component to produce a difference (helper) signal. The difference signal is time compressed and multiplexed into upper and lower edge bar regions of the letterbox format. The compatible letterbox signal also is encoded with additional information including vertical high frequency information and horizontal high frequency information separated during the transcoding and compression processes, respectively. The encoding includes modulating the color subcarrier frequency with luminance information, and intraframe averaging. The difference signal and encoded additional information are used by a 16:9 widescreen receiver to produce a 16:9 progressive scan image display with the transcoded number of lines and good resolution.

Abstract translation: 在生成兼容的4：3信箱格式的电视信号的过程中，宽屏幕16：9逐行扫描电视信号从575垂直转码到431个图像线，转换成行隔行格式并水平压缩。 垂直代码转换的隔行扫描亮度分量通过内插转换回逐行扫描形式，并从垂直转码的原始逐行扫描亮度分量中减去以产生差（辅助信号）。 差分信号被时间压缩并复用到信箱格式的上边缘和下边缘区域。 兼容的信箱信号还用附加信息进行编码，包括分别在代码转换和压缩处理期间分离的垂直高频信息和水平高频信息。 该编码包括利用亮度信息调制彩色副载波频率和帧内平均。 差分信号和编码的附加信息由16：9宽屏接收机使用以产生具有代码转换数目的线和良好分辨率的16:9逐行扫描图像显示。

公开(公告)号：US6081295A

公开(公告)日：2000-06-27

申请号：US427086

申请日：1995-04-21

Applicant: Dirk Adolph ,  Dietrich Westerkamp ,  Carsten Herpel ,  Ingo Hutter

Inventor： Dirk Adolph ,  Dietrich Westerkamp ,  Carsten Herpel ,  Ingo Hutter

IPC: H04N5/92 ,  G06T9/00 ,  G11B20/14 ,  H04N19/40 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N19/40

Abstract: The coding or decoding of video data with the associated audio and/or other data can be performed, for example, on the basis of the standards ISO/IEC 11172 (MPEG1) or ISO/IEC 13818 (MPEG2). Such coding and decoding can include the conversion of a primary bit stream coded on the basis of such standards into a secondary bit stream with a different data rate. Since the information content of the motion vectors from the primary bit stream retain their validity in the secondary bit stream, it is not necessary to recalculate motion vectors for transcoding. Instead, encoding of the secondary bit stream is performed with the aid of the motion vectors from the primary bit stream which are reused. In such a case, the encoding of the secondary bit stream is carried out in a restricted prediction mode, i.e. only those prediction modes which are described by respective block type or the motion information of the primary bit stream are allowed in the secondary bit stream.

Abstract translation: 可以例如基于ISO / IEC 11172（MPEG1）或ISO / IEC 13818（MPEG2）标准来执行具有相关联的音频和/或其他数据的视频数据的编码或解码。 这种编码和解码可以包括将基于这样的标准编码的主要比特流的转换成具有不同数据速率的次要比特流。 由于来自主比特流的运动矢量的信息内容在次比特流中保持其有效性，因此不需要重新计算用于代码转换的运动矢量。 相反，借助来自重用的主比特流的运动矢量来执行辅助比特流的编码。 在这种情况下，次要比特流的编码是在受限的预测模式下执行的，即只有那些由各个块类型描述的那些预测模式或主比特流的运动信息被允许在辅助比特流中。

公开(公告)号：US4807033A

公开(公告)日：1989-02-21

申请号：US914732

申请日：1986-10-01

Applicant: Werner Keesen ,  Wolfgang Hartnack ,  Dietrich Westerkamp

Inventor： Werner Keesen ,  Wolfgang Hartnack ,  Dietrich Westerkamp

IPC: H03M13/00 ,  H03M11/00 ,  H04N19/895 ,  H04N7/13 ,  H04N7/133

CPC classification number: H04N19/895 ,  H04N19/60 ,  H04N19/61 ,  H04N19/63 ,  H04N19/65

Abstract: Method of correcting television signals transmitted in blocks, including detecting defective blocks with an error detection circuit and calculating substitute information for a block determined to be defective from an environment of the defective block or from a television signal preceding in time the signal containing the defective block.

Abstract translation: 校正以块为单位发送的电视信号的方法，包括利用错误检测电路检测缺陷块，并且从所述缺陷块的环境或从包含有缺陷块的信号的时间起计算的电视信号计算被确定为有缺陷的块的替代信息 。