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    Digital signal recording apparatus which utilizes predetermined areas on a magnetic tape for multiple purposes
    2.
    发明授权
    Digital signal recording apparatus which utilizes predetermined areas on a magnetic tape for multiple purposes 失效
    在磁带上利用预定区域用于多个目的的数字信号记录装置

    公开(公告)号：US06337948B1

    公开(公告)日：2002-01-08

    申请号：US09583164

    申请日：2000-05-30

    申请人： Junko Shinohara ,  Sadayuki Inoue ,  Tatsuo Yamasaki ,  Ken Onishi

    发明人： Junko Shinohara ,  Sadayuki Inoue ,  Tatsuo Yamasaki ,  Ken Onishi

    IPC分类号： H04N591

    CPC分类号： G11B20/1207 ,  G11B15/02 ,  G11B15/125 ,  G11B15/1875 ,  G11B15/4672 ,  G11B15/4678 ,  G11B20/18 ,  G11B20/1866 ,  G11B27/005 ,  G11B27/3027 ,  G11B27/3063 ,  G11B2220/20 ,  G11B2220/90 ,  H04N5/78263 ,  H04N5/78266 ,  H04N5/783 ,  H04N9/7973 ,  H04N9/8042 ,  H04N9/8227 ,  H04N9/877

    摘要： A signal which is to be used in high-speed playback is recorded in a predetermined region of a track. An error correcting check code region for recording an error correcting check code is formed at a position adjacent to the predetermined region. In accordance with the usage, an error correcting check code for high-speed playback, an error correcting check code for normal playback, or predetermined fixed data is recorded in the error correcting check code region. In a digital VTR which records and plays back data at plural kinds of data rates, trick playback data are recorded so that a head scans a subcode area or a VAUX area in high-speed playback at a predetermined tape running speed in each record mode. An area for recording an error correcting check code is used as an area for, in addition to an error correcting check code for normal playback, recording an error correcting check code for trick playback, normal playback data, or trick playback data.

    摘要翻译： 要在高速播放中使用的信号被记录在轨道的预定区域中。 在与预定区域相邻的位置处形成用于记录纠错校验码的纠错校验码区域。 根据该用途，用于高速重放的纠错校验码，用于正常重放的纠错校验码或预定的固定数据被记录在纠错校验码区域中。 在以多种数据速率记录和重放数据的数字VTR中，记录特技重放数据，使得头在每个记录模式下以预定的磁带运行速度扫描高速重放中的子代码区域或VAUX区域。 用于记录纠错校验码的区域除了用于正常播放的纠错校验码之外，还用于记录用于特技重放，正常播放数据或特技播放数据的纠错校验码。

    Digital video signal playback device with special playback data being in the form of a still image slice data
    6.
    发明授权
    Digital video signal playback device with special playback data being in the form of a still image slice data 失效
    具有静止图像切片数据形式的特殊重放数据的数字视频信号播放装置

    公开(公告)号：US5907660A

    公开(公告)日：1999-05-25

    申请号：US768225

    申请日：1996-12-17

    申请人： Sadayuki Inoue ,  Junko Shinohara ,  Tatsuo Yamasaki

    发明人： Sadayuki Inoue ,  Junko Shinohara ,  Tatsuo Yamasaki

    IPC分类号： H04N5/7826 ,  H04N5/783 ,  H04N7/66 ,  H04N9/804 ,  H04N9/82 ,  H04N9/877 ,  H04N21/236 ,  H04N21/434 ,  H04N5/917 ,  H04N5/91 ,  H04N7/26

    CPC分类号： H04N21/236 ,  H04N21/434 ,  H04N5/783 ,  H04N5/78266 ,  H04N9/8042 ,  H04N9/8227 ,  H04N9/877

    摘要： In a digital signal playback device for playing back data from a recording medium on which intraframe, intrafield, interframe or interfield encoded digital video signals and digital audio signals input in the form of packets have been recorded transparently, and special playback data for special playback generated from said intraframe or intrafield encoded digital video signals has been recorded at predetermined positions, the special playback data is separated from a playback signal during special playback, and stored in a data storage circuit stores the separated special playback data. A still image slice data generator generates slice data with the motion vectors being 0 and prediction errors being 0 for all macroblocks in the slice. A data controller controls the still image slice generator such that the slice data from the still image slice generator is output for a predetermined number of frames after the special playback data of one frame or one field separated from the data storage means has been output. With the above arrangement, memory capacity is reduced, circuit size is reduced, and special playback can be realized without causing the ATV decoder to recognize the special playback mode.

    摘要翻译： 在用于从其中已经透明地记录以帧的形式输入的帧内，场内，帧间或场间编码的数字视频信号和数字音频信号的记录介质中回放数据的数字信号重放装置中，并且产生用于特殊重放的特殊重放数据 从所述帧内或帧内编码的数字视频信号已经被记录在预定位置，特殊重放数据在特殊重放期间与重放信号分离，并且存储在数据存储电路中，存储分离的特殊重放数据。 静止图像切片数据生成器生成切片数据，其中运动矢量为0，并且切片中的所有宏块的预测误差为0。 数据控制器控制静止图像切片发生器，使得来自静止图像切片发生器的切片数据在已经输出与数据存储装置分离的一帧或一个场的特殊重放数据之后输出预定数量的帧。 通过上述结构，存储容量降低，电路尺寸减小，可以实现特殊重放，而不会导致ATV解码器识别特殊播放模式。

    Digital VTR
    7.
    发明授权
    Digital VTR 失效
    数字录像机

    公开(公告)号：US5956454A

    公开(公告)日：1999-09-21

    申请号：US532308

    申请日：1995-09-22

    申请人： Junko Shinohara ,  Tomohiro Ueda ,  Sadayuki Inoue ,  Masako Asamura ,  Ken Onishi

    发明人： Junko Shinohara ,  Tomohiro Ueda ,  Sadayuki Inoue ,  Masako Asamura ,  Ken Onishi

    IPC分类号： H04N5/7826 ,  H04N5/783 ,  H04N9/804 ,  H04N9/82 ,  H04N5/91 ,  H04N5/917

    CPC分类号： H04N5/783 ,  H04N9/8042 ,  H04N5/78266 ,  H04N9/8227

    摘要： In a digital VTR which receives at least a digital video signal input in the form of a bit stream, and which records the bit stream according to a transparent recording method, header information is extracted from the bit stream and modified. Intra-coded block components are also detected and extracted from the bit stream, and one track is configured with an area for recording the input bit stream and an area for recording fast playback HP data. Extracted as the intra-coded block components are a predefined number of orthogonal transform coefficients, and the fast playback HP data is configured without appending EOB codes to the intra-coding block components. Alternatively, EOB codes are appended except that the shortest EOB code from a plurality of code maps is used. The digital VTR also records more than one fast playback signal in predefined regions on predefined tracks such that a first playback signal is recorded in an area at one location on one track, while a second playback signal is recorded in a plurality of areas on a track adjacent thereto.

    摘要翻译： 在数字VTR中，至少接收到以比特流形式输入的数字视频信号，并且根据透明记录方法记录比特流，从比特流中提取头信息并对其进行修改。 还从比特流检测和提取帧内编码块分量，并且一个轨道配置有用于记录输入比特流的区域和用于记录快速重放HP数据的区域。 当帧内编码块分量是预定数量的正交变换系数时被提取，并且配置快速重放HP数据而不将EOB代码附加到帧内编码块分量。 或者，除了使用来自多个代码图的最短的EOB代码之外，附加EOB代码。 数字VTR还在预定轨道上的预定义区域中记录多于一个快速重放信号，使得第一重放信号被记录在一个轨道上的一个位置的区域中，而第二重放信号被记录在轨道上的多个区域中 相邻。

    Digital signal recording and reproducing apparatus and error-correcting apparatus
    9.
    发明授权
    Digital signal recording and reproducing apparatus and error-correcting apparatus 失效
    数字信号记录和再现装置和纠错装置

    公开(公告)号：US5587803A

    公开(公告)日：1996-12-24

    申请号：US432703

    申请日：1995-05-02

    申请人： Tohru Inoue ,  Ken Onishi ,  Sadayuki Inoue ,  Ikuo Okuma

    发明人： Tohru Inoue ,  Ken Onishi ,  Sadayuki Inoue ,  Ikuo Okuma

    IPC分类号： H04N5/7826 ,  H04N5/783 ,  H04N9/804 ,  H04N9/82 ,  H04N9/877 ,  H04N9/79

    CPC分类号： H04N9/8047 ,  H04N5/78266 ,  H04N5/783 ,  H04N9/8216 ,  H04N9/877

    摘要： Fast speed playback is performed with a reduced error-correcting capability as compared with that for normal speed playback. Information of K symbols is encoded with a first error-correcting code C1 and appended with (N-K) check symbols. After that, m symbols out of the check symbols are punctured, and the information of K symbols is divided into a block of K.sub.1 symbols and a block of K.sub.2 symbols, the block of K.sub.1 symbols being further encoded with a second error-correcting code Cm and appended with m.sub.1 check symbols for error correction. For efficient error-correction coding of auxiliary data which is usually not used but which becomes necessary on occasions, the presence or absence of auxiliary data is written in ID information, and the number of error-correcting check symbols is changed accordingly.

    摘要翻译： 与正常速度重放相比，以较小的纠错能力执行快速重放。 K符号的信息用第一纠错码C1编码并附加（N-K）个校验符号。 之后，检查符号中的m个符号被打孔，并且K个符号的信息被划分为K1个符号块和K2个符号块，K1个符号的块进一步用第二纠错码Cm 并附加m1个检查符号进行纠错。 对于通常不使用但在场合变得必要的辅助数据的有效纠错编码中，辅助数据的存在或不存在被写入ID信息中，并且纠错校验符号的数量相应地改变。