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    • 4. 发明申请
    • REPRODUCTION APPARATUS HAVING A BUFFER FOR REDUCING THE MEAN ACCESS TIME TO AN INFORMATION CARRIER
    • 具有用于减少平均访问时间到缓冲器的信息载体的再现装置
    • WO2003052760A1
    • 2003-06-26
    • PCT/EP2002/013783
    • 2002-12-05
    • THOMSON LICENSING S.A.WINTER, MarcoKOCHALE, Axel
    • WINTER, MarcoKOCHALE, Axel
    • G11B27/32
    • G11B20/10527G06F3/0601G06F2003/0691G11B2020/1062
    • The invention relates to a reproduction apparatus having a buffer for reducing the mean access time to an information carrier which has for example a discontinuous data structure or a relatively long access time.For writing sectors (S) to the buffer and for finding sectors (S) in the buffer, a control table (CS) with a number of place holders and three variables is provided, the place holders in each case pointing with an index to a subsequent place holder in an endless chain of place holders which is divided into three regions, in which a predetermined sector (S) in the order in the respective region is identified by one of the variables.Even though only one row of place holders is provided, multiple access to a plurality of sectors (S) written to the buffer is made possible with a low outlay by means of the control table (CS), so that the number of slower accesses to the information carrier is reduced and the mean access time is shortened.Application is envisaged for reproduction apparatuses with a small storage space, such as, for example, a DVD reproduction apparatus.
    • 本发明涉及一种具有缓冲器的再现设备,该缓冲器用于减少具有例如不连续数据结构或相对长的访问时间的信息载体的平均访问时间。为了将扇区(S)写入缓冲区并用于发现扇区(S )在缓冲区中,提供了一个具有多个占位符和三个变量的控制表(CS),每个案例中的占位符都指向一个连续的持有者的后续占位符的索引,该位置持有者被分为三个 区域,其中通过其中一个变量来识别相应区域中的顺序的预定扇区(S)。即使仅提供一行占位符,对写入缓冲器的多个扇区(S)进行多次访问 通过控制表(CS)的低支出成为可能,从而减少了对信息载体的较慢访问次数,缩短了平均访问时间。应用程序用于再现应用程序 具有小的存储空间的空间,例如DVD再现装置。
    • 6. 发明申请
    • MPEG VIDEO RECORDING MEDIUM AND REPRODUCTION APPARATUS
    • MPEG视频记录介质和再现设备
    • WO2003055233A1
    • 2003-07-03
    • PCT/EP2002/013903
    • 2002-12-09
    • THOMSON LICENSING S.A.KOCHALE, Axel
    • KOCHALE, Axel
    • H04N9/888
    • H04N9/888H04N5/85H04N9/8042H04N9/8227
    • The invention relates to an MPEG video recording medium and a reproduction apparatus for the reconstruction of missing data sequences of a video data stream. Scratches and other defects of the recording medium cause interruptions or disturbances in the data stream read from the recording medium, which can be corrected only to a limited extent by conventional error correction methods, such as the Reed-Solomon Code, for example. Therefore, an MPEG video recording medium is provided on which, with respect to an original I frame (I1), at least one copy or a similar I frame (I1*) is recorded on the recording medium for the reconstruction of missing or erroneous data sequences of a video data stream. The replacement I frames (I1*, ...) are arranged in the outer area, intermittently or within a predetermined area in the program area on the recording medium and do not influence the reproduction of the recording medium on conventional reproduction apparatuses. In a reproduction apparatus for the reconstruction of missing or erroneous data sequences of a video data stream from an MPEG video recording medium, provision is made of error detection means for determining the sector address of a missing or erroneous I frame (I1, ...), which are used to start a search for a copy or a similar I frame (I1*, ...) on the recording medium, and provision is made of control means by which a missing or erroneous I frame (I1) in the original data stream is replaced by the copy or the similar I frame (I1*) for the reconstruction of missing or erroneous data sequences of the video data stream and is reproduced by a video decoder.
    • 本发明涉及MPEG视频记录介质和用于重建视频数据流的丢失数据序列的再现装置。 记录介质的划痕和其他缺陷导致从记录介质读取的数据流中的中断或干扰,其仅可通过常规纠错方法(例如里德 - 所罗门码)在有限的程度上进行校正。 因此,提供MPEG视频记录介质,对于原始I帧(I1),至少一个拷贝或类似的I帧(I1 *)被记录在记录介质上用于重建丢失或错误的数据 视频数据流的序列。 替换I帧(I1 *,...)被布置在外部区域中,间歇地或在记录介质上的程序区域中的预定区域内,并且不影响常规再现设备中的记录介质的再现。 在用于重建来自MPEG视频记录介质的视频数据流的丢失或错误数据序列的再现装置中,提供了用于确定丢失或错误的I帧(I1,...)的扇区地址的错误检测装置 ),用于开始对记录介质上的副本或类似的I帧(I1 *,...)进行搜索,并且提供控制装置,通过该控制装置将丢失或错误的I帧(I1) 原始数据流由复制或类似的I帧(I1 *)代替,用于重建视频数据流的丢失或错误的数据序列,并由视频解码器再现。
    • 9. 发明申请
    • METHOD FOR RUN-LENGTH ENCODING OF A BITMAP DATA STREAM
    • BITMAP数据流的长度编码方法
    • WO2005006736A1
    • 2005-01-20
    • PCT/EP2004/004794
    • 2004-05-06
    • THOMSON LICENSING S.A.ADOLPH, DirkHÖRENTRUP, JobstKOCHALE, AxelOSTERMANN, RalfPETERS, Hartmut
    • ADOLPH, DirkHÖRENTRUP, JobstKOCHALE, AxelOSTERMANN, RalfPETERS, Hartmut
    • H04N1/41
    • H04N19/93H04N1/64H04N21/4884
    • Subtitling aims at the presentation of text information and graphical data, encoded as pixel bitmaps. The size of subtitle bitmaps may exceed video frame dimensions, so that only portions are displayed at a time. The bitmaps are a separate layer lying above the video, e.g. for synchronized video subtitles, animations and navigation menus, and therefore contain many transparent pixels. An advanced adaptation for bitmap encoding for HDTV, e.g. 1920x1280 pixels per frame as defined for the Blu-ray Disc Prerecorded format, providing optimized compression results for such subtitling bitmaps, is achieved by a four-stage run length encoding. Shorter or longer sequences of pixels of a preferred color, e.g. transparent, are encoded using the second or third shortest code words, while single pixels of different color are encoded using the shortest code words, and sequences of pixels of equal color use the third or fourth shortest code words.
    • 字幕旨在呈现文本信息和图形数据,编码为像素位图。 字幕位图的大小可能会超过视频帧尺寸,因此只能显示部分。 位图是位于视频上方的单独的层,例如 用于同步视频字幕,动画和导航菜单,因此包含许多透明像素。 适用于HDTV的位图编码的高级适配。 通过四级游程长度编码实现为蓝光光盘预录制格式定义的每帧1920x1280像素,为这些字幕位图提供优化的压缩结果。 优选颜色的较短或更长的像素序列,例如。 使用第二或第三最短代码字进行编码,而使用最短代码字对不同颜色的单个像素进行编码,并且等颜色的像素序列使用第三或第四最短代码字。