Digital video signal recording and reproducing apparatus
    3.
    发明授权
    Digital video signal recording and reproducing apparatus 失效
    数字视频信号记录和再现装置

    公开(公告)号:US5675696A

    公开(公告)日:1997-10-07

    申请号:US546841

    申请日:1995-10-23

    摘要: A digital video signal recording and reproducing apparatus which obtains a favorable reproduced picture even when the data overwritten by edited data is interpolated with the data of the preceding field or preceding frame by recording the video data of the visually inconspicuous peripheral area on a track that is possibly overwritten by the editing data at a cut-in point or cut-out point in assemble editing or insert editing. The apparatus further obtains a natural picture without any fixed error even in speed search mode by exchanging the recording order of the video data of one field on plural tracks according to the head scanning trace in the speed search.

    摘要翻译: 一种数字视频信号记录和再现装置,即使在通过编辑数据覆盖的数据被内插的情况下,通过将视觉上不显眼的周边区域的视频数据记录在 在编辑或插入编辑时可能会在切入点或切出点处的编辑数据覆盖。 通过在速度搜索中根据头部扫描轨迹交换多个轨道上的一个场的视频数据的记录顺序,装置还通过速度搜索模式获得无任何固定误差的自然图像。

    Digital VTR increasing recorded amount of high priority data
    7.
    发明授权
    Digital VTR increasing recorded amount of high priority data 失效
    数字VTR增加了高优先级数据的记录量

    公开(公告)号:US6011663A

    公开(公告)日:2000-01-04

    申请号:US857468

    申请日:1997-05-16

    摘要: The digital VTR includes an extractor, variable-length decoder, quantizer and variable-length encoder. The extractor receives digital data divided into blocks, and which is quantized and variable-length coded on a block-by-block basis. Portions of the digital data are encoded according to a first type of encodation, and other portions of the digital data are encoded according to a second type of encodation. The extractor identifies and extracts the digital data encoded according to the first type of encodation. The variable-length decoder variable-length decodes the extracted portions of the digital data, while the quantizer quantizes the decoded data output by the variable length decoder. The variable length encoder variable-length encodes the quantized decoded data to form special-playback data. Alternatively, a convertor converts the extracted portions of the digital data into variable-length coded data having different quantization steps to form the special-playback data.

    摘要翻译: 数字VTR包括提取器,可变长度解码器,量化器和可变长度编码器。 提取器接收被划分成块的数字数据,并且被逐块地量化和可变长度编码。 数字数据的部分根据第一类型的编码被编码,并且数字数据的其他部分根据第二类型的编码进行编码。 提取器识别并提取根据第一类型编码编码的数字数据。 可变长度解码器可变长度解码数字数据的提取部分,而量化器对可变长度解码器输出的解码数据进行量化。 可变长度编码器可变长度编码量化的解码数据以形成专用回放数据。 或者,转换器将所提取的数字数据部分转换成具有不同量化步长的可变长度编码数据,以形成特殊重放数据。