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71. 发明授权

US06337948B1 Digital signal recording apparatus which utilizes predetermined areas on a magnetic tape for multiple purposes 失效
标题翻译：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。

72. 发明授权

US6021017A Magnetic recording and playback device which processes error signals to obtain a servo correction signal 失效
标题翻译：用于处理误差信号以获得伺服校正信号的磁记录和重放装置
公开(公告)号：US6021017A
公开(公告)日：2000-02-01
申请号：US924889
申请日：1997-09-05
申请人： Masako Asamura , Tomohiro Ueda , Taketoshi Hibi , Tatsuo Yamasaki , Ken Onishi
发明人： Masako Asamura , Tomohiro Ueda , Taketoshi Hibi , Tatsuo Yamasaki , Ken Onishi
IPC分类号： H04N5/783 , G11B5/584 , G11B5/588 , G11B15/467 , H04N5/92
CPC分类号： G11B5/584
摘要： A tracking error signal is detected using an error detector, from cross-talk components at a point in each of the regions of several duplication areas from which reproduction is possible, and tracking control is performed using a servo circuit, based on the average value of the error signals or the average of the maximum and minimum of the peak values of the error signals from the respective areas during one scan. Even when a large amount of fast playback data is recorded, and track non-linearity is present, the fast playback can be reproduced without fail, and signals in fast playback data regions at a plurality of locations can be obtained without fail.
摘要翻译：使用误差检测器来检测跟踪误差信号，来自可从其重放的多个复制区域的每个区域中的一个点处的串扰分量，并且使用伺服电路基于平均值执行跟踪控制误差信号或在一次扫描期间来自各个区域的误差信号的峰值的最大值和最小值的平均值。即使当记录大量的快速重放数据，并且存在轨道非线性时，可以无故障地再现快速重放，并且可以毫不费力地获得多个位置处的快速重放数据区域中的信号。

73. 发明授权

US5751890A Magnetic type recording and reproducing apparatus 失效
标题翻译：磁式记录和再现装置
公开(公告)号：US5751890A
公开(公告)日：1998-05-12
申请号：US554833
申请日：1995-11-07
申请人： Tatsuo Yamasaki , Masako Asamura , Sadayuki Inoue , Junko Shinohara , Ken Onishi
发明人： Tatsuo Yamasaki , Masako Asamura , Sadayuki Inoue , Junko Shinohara , Ken Onishi
IPC分类号： G11B15/087 , G11B15/12 , G11B15/18 , G11B15/467 , G11B27/00 , H04N5/7826 , H04N5/783 , H04N9/804 , H04N9/82 , H04N5/76
CPC分类号： H04N9/8042 , G11B15/125 , G11B15/1875 , G11B15/4678 , G11B27/005 , G11B15/087 , H04N5/78263 , H04N5/783 , H04N9/8227
摘要： A magnetic type recording and reproducing apparatus comprises means for extracting by a first head and a second head a plurality of pilot signal components and means for finding an error for control of tracking with using a proper pilot signal component in accordance with a data rate of signals. The magnetic type recording and reproducing apparatus controls a recording tape speed in accordance with the data rate of signals, controls a playback tape speed in accordance with a high playback speed and the data rate, and arranges high speed playback data in areas which are to be traced by both heads during a playback with a plurality of data rates.
摘要翻译：磁式记录和再现装置包括用于由第一头和第二头提取多个导频信号分量的装置，以及用于根据信号的数据速率使用适当的导频信号分量来发现用于跟踪的控制的误差的装置。磁式记录和再现装置根据信号的数据速率控制记录磁带速度，根据高回放速度和数据速率控制重放磁带速度，并将高速重放数据排列在要被在具有多个数据速率的回放期间由两个头跟踪。

74. 发明授权

US5696774A Digital signal recording device, digital signal playback device, and digital signal decoding device therefor 失效
标题翻译：数字信号记录装置，数字信号回放装置及数字信号解码装置
公开(公告)号：US5696774A
公开(公告)日：1997-12-09
申请号：US565973
申请日：1995-12-01
申请人： Sadayuki Inoue , Junko Shinohara , Tatsuo Yamasaki , Ken Onishi
发明人： Sadayuki Inoue , Junko Shinohara , Tatsuo Yamasaki , Ken Onishi
IPC分类号： G11B5/008 , G11B5/09 , G11B15/03 , G11B15/18 , G11B20/18 , H04N5/7826 , H04N5/783 , H04N9/804 , H04N9/82 , H04N19/89
CPC分类号： H04N19/89 , G11B20/1833 , G11B20/1866 , H04N9/8042 , G11B15/03 , G11B15/1875 , G11B5/0086 , G11B5/09 , H04N5/78266 , H04N5/783 , H04N9/8227
摘要： To reduce the undetected errors without degradation of the burst error correction capability, in error correction decoding of the digital signal with three-dimensional error correction codes appended thereto. For correcting errors by applying error correction codes in three directions of a recording direction, perpendicular direction, and direction of tracks, whether a burst error has occurred is checked, and an error-correction decoding algorithm is switched between one used when a burst error has occurred, and one used when no burst error has occurred.
摘要翻译：为了在不降低突发纠错能力的情况下减少未检测到的错误，在附加有三维纠错码的数字信号的纠错解码中。为了通过在记录方向，磁道的垂直方向和方向的三个方向上应用纠错码来校正错误，检查是否发生了脉冲串错误，并且在突发错误具有的情况下使用纠错解码算法发生，当没有发生突发错误时使用。

75. 发明授权

US5684915A Digital VTR for recording special replay data with appended error correction codes 失效
标题翻译：数字录像机，用于录制特殊重放数据，附带纠错码
公开(公告)号：US5684915A
公开(公告)日：1997-11-04
申请号：US420141
申请日：1995-04-11
申请人： Tomohiro Ueda , Taketoshi Hibi , Junko Ishimoto , Masako Asamura , Nobuyoshi Okumura , Sadayuki Inoue , Tohru Inoue , Ken Onishi
发明人： Tomohiro Ueda , Taketoshi Hibi , Junko Ishimoto , Masako Asamura , Nobuyoshi Okumura , Sadayuki Inoue , Tohru Inoue , Ken Onishi
IPC分类号： H04N5/783 , G11B5/008 , G11B5/09 , G11B15/18 , G11B15/44 , G11B15/46 , G11B15/467 , G11B15/473 , G11B20/00 , G11B20/12 , G11B20/18 , G11B27/00 , G11B27/30 , H03M13/00 , H04N5/7826 , H04N5/913 , H04N5/92 , H04N9/804 , H04N9/82
CPC分类号： H04N9/8042 , G11B15/1816 , G11B15/1875 , G11B15/44 , G11B15/4678 , G11B20/1201 , G11B27/005 , G11B27/3027 , G11B5/0086 , G11B5/09 , H04N9/8047 , G11B15/463 , G11B20/00086 , G11B20/1809 , G11B2220/90 , H04N5/78263 , H04N5/783 , H04N5/913 , H04N9/8227
摘要： Data separating means extracts intra-frame or intra-field encoded blocks from an intra-frame or intra-field encoded, and inter-frame or inter-field encoded digital video signal, and a digital audio signal contained in an input bit stream. Error correction code appending means appends error correction codes to the extracted intra-encoded blocks. Recording means records the data having the error correction code appended, in special replay data recording areas predefined on the magnetic recording tape. During fast replay or slow replay, error correction is achieved even for the replay signal with a low output level and a poor symbol rate.
摘要翻译：数据分离装置从帧内或场内编码，帧间或场间编码数字视频信号以及包含在输入比特流中的数字音频信号提取帧内或场内编码块。纠错码附加装置将纠错码附加到提取的帧内编码块。记录装置将具有附加的纠错码的数据记录在磁记录带上预定义的特殊重放数据记录区域中。在快速重放或慢速重放期间，即使对于具有低输出电平和差的符号率的重放信号也能实现纠错。

76. 发明授权

US5642459A Digital signal recording method and digital video tape recorder 失效
标题翻译：数字信号记录方法和数字录像机
公开(公告)号：US5642459A
公开(公告)日：1997-06-24
申请号：US957084
申请日：1992-10-06
申请人： Yukari Arano , Ken Onishi
发明人： Yukari Arano , Ken Onishi
IPC分类号： G11B20/12 , G11B20/18 , G11B27/032 , G11B27/036 , G11B27/038 , G11B27/10 , G11B27/30 , G11B27/32 , H04N5/7826 , H04N5/926 , H04N5/928 , H04N5/945 , H04N9/802 , H04N5/782
CPC分类号： G11B27/032 , G11B20/1208 , G11B20/1806 , G11B20/1809 , G11B20/1876 , G11B27/036 , G11B27/30 , G11B27/3027 , G11B27/3036 , G11B27/323 , H04N5/78266 , H04N5/9268 , H04N5/928 , H04N5/945 , H04N9/802 , G11B2020/10537 , G11B2020/10592 , G11B2220/90 , G11B27/038 , G11B27/10
摘要： A digital video tape recorder has interpolation and crossfading circuits and records audio and video signals in independent frames, the audio frames being offset with respect to the video frames. For a four-channel audio signal, the even and odd samples are recorded near different edges of the tape, enabling burst errors near one edge to be recovered efficiently by interpolating the audio signal from the other edge. When audio dubbing is performed, the first and last dubbed frames contain the even samples of the new signal and the odd samples of the old signal, or vice versa, and audio-dubbing flags are recorded in the these frames. When these frames are played back, the old and new signals are regenerated by interpolation and crossfaded to create a smooth transition between them. The same apparatus can also be used to record a two-channel signal, by recording each sample twice.
摘要翻译：数字录像机具有内插和交叉渐变电路，并且在独立帧中记录音频和视频信号，音频帧相对于视频帧偏移。对于四声道音频信号，偶数和奇数样本记录在磁带的不同边缘附近，通过内插来自另一边缘的音频信号，可以有效地恢复一个边缘附近的脉冲串错误。当执行音频复制时，第一个和最后一个复制的帧包含新信号的偶数样本和旧信号的奇数样本，反之亦然，并且音频转录标志被记录在这些帧中。当这些帧被播放时，旧的和新的信号通过插值和交叉渐变再生，从而在它们之间形成平滑的过渡。同样的设备也可用于记录双通道信号，通过记录每个样品两次。

77. 发明授权

US5589994A Image recording method and apparatus with reduced error propagation 失效
标题翻译：降低误差传播的图像记录方法和装置
公开(公告)号：US5589994A
公开(公告)日：1996-12-31
申请号：US109723
申请日：1993-08-19
申请人： Tatsuo Yamasaki , Ikuo Okuma , Ken Onishi
发明人： Tatsuo Yamasaki , Ikuo Okuma , Ken Onishi
IPC分类号： G11B5/008 , G11B5/09 , G11B5/86 , G11B20/10 , G11B20/18 , G11B27/032 , H04N5/92 , H04N5/926 , H04N5/945
CPC分类号： H04N5/945 , G11B20/10527 , G11B20/1809 , G11B27/032 , G11B5/0086 , G11B5/09 , G11B5/86 , H04N5/9261 , G11B2220/90 , H04N5/9201 , H04N5/926
摘要： According to a first aspect of the invention, digital image data are recorded in the form of compressed codewords with check information and flags. The flags indicate codewords containing uncorrected errors. Each time the data are copied, error detection and correction are performed and the flags are updated to indicate any new uncorrectable errors that are detected. The flags can be used for error concealment, to avoid error miscorrection, and to permit the check information to be regenerated each time the data are copied. According to a second aspect of the invention, when image data are copied, the same check information is used to perform error detection and correction twice. Flags identifying uncorrected errors can be transferred from the first error-detecting-and-correcting process to the second.
摘要翻译：根据本发明的第一方面，数字图像数据以具有检查信息和标志的压缩码字的形式记录。这些标志表示包含未校正错误的码字。每次复制数据时，执行错误检测和校正，并更新标志以指示检测到的任何新的不可校正错误。这些标志可以用于错误隐藏，以避免错误错误纠正，并允许每次复制数据时重新生成检查信息。根据本发明的第二方面，当复制图像数据时，使用相同的检查信息进行两次错误检测和校正。识别未校正错误的标志可以从第一个错误检测和纠正过程转移到第二个。

78. 发明授权

US5574570A Video signal recording/reproduction apparatus and method for recording/reproducing two kinds of video signals carrying different amounts of information 失效
标题翻译：用于记录/再现携带不同信息量的两种视频信号的视频信号记录/再现装置和方法
公开(公告)号：US5574570A
公开(公告)日：1996-11-12
申请号：US057774
申请日：1993-05-06
申请人： Ikuo Ohkuma , Makoto Kumano , Kihei Ido , Ken Onishi
发明人： Ikuo Ohkuma , Makoto Kumano , Kihei Ido , Ken Onishi
IPC分类号： G11B20/18 , G11B27/032 , G11B27/036 , G11B27/30 , H03M13/35 , H04N9/804 , H04N9/806 , H04N9/82 , H04N9/888 , H04N5/76 , G11B5/02 , H04N5/91
CPC分类号： G11B27/3027 , G11B20/1813 , G11B27/036 , H03M13/35 , H04N9/8042 , H04N9/8066 , H04N9/8227 , H04N9/888 , G11B2220/90 , G11B27/032
摘要： When recording HD video signals, twice the number of tracks are used as compared to recording the conventional NTSC video signals, and video signals are recorded in the audio sector. HD video signals are encoded with the same number of checks as the error-correcting code of the present video signals, with the number of information symbols being increased. When recording HD video signals and present video signals, these signals are encoded so that the shortest recording wavelength is the same with either signal.
摘要翻译：当记录高清视频信号时，与记录常规NTSC视频信号相比，使用两倍数量的磁道，并且视频信号被记录在音频扇区中。 HD视频信号用与当前视频信号的纠错码相同数量的检查进行编码，信息符号数量增加。当记录HD视频信号并呈现视频信号时，对这些信号进行编码，使得最短记录波长与任一信号相同。

79. 发明授权

US5546191A Recording and reproducing apparatus 失效
标题翻译：记录和再现设备
公开(公告)号：US5546191A
公开(公告)日：1996-08-13
申请号：US20593
申请日：1993-02-22
申请人： Taketoshi Hibi , Kenji Maeno , Kihei Ido , Ken Onishi , Shinobu Ueda , Akiyoshi Hirano , Keiji Hatanaka , Takashi Shiroshita
发明人： Taketoshi Hibi , Kenji Maeno , Kihei Ido , Ken Onishi , Shinobu Ueda , Akiyoshi Hirano , Keiji Hatanaka , Takashi Shiroshita
IPC分类号： G11B27/10 , G11B27/11 , G11B27/28 , G11B27/32 , G11B27/34 , H04N5/92 , H04N5/926 , H04N5/76 , H04N5/445 , H04N9/79
CPC分类号： G11B27/28 , G11B27/107 , G11B27/11 , G11B27/324 , G11B27/326 , G11B27/328 , G11B27/34 , H04N5/9208 , H04N5/9268 , G11B2220/41 , G11B2220/65 , G11B2220/90 , G11B2220/91
摘要： In program retrieval using a magnetic tape in which programs are classified by index signals recorded on the tape, an image at the beginning of each program is displayed in a list on a multi-screen, and a desired program is directly selected using a count value of index signals. In recording, an index signal is recorded at a starting point of recording. When preparing a multi-screen at the time of reproducing, an image reproduced a predetermined time after detection of an index signal is reduced and stored in a memory.
摘要翻译：在利用记录在磁带上的索引信号对程序进行分类的磁带的程序检索中，将每个程序开头的图像显示在多屏幕上的列表中，并且使用计数值直接选择所需的程序的指标信号。在记录中，在记录的开始点记录索引信号。当在再现时准备多屏幕时，在检索到索引信号之后再现预定时间的图像被存储在存储器中。

80. 发明授权

US5543845A High efficiency encoding apparatus 失效
标题翻译：高效编码装置
公开(公告)号：US5543845A
公开(公告)日：1996-08-06
申请号：US430280
申请日：1995-04-28
申请人： Yoshinori Asamura , Yoshiko Hatano , Ken Onishi , Takashi Shiroshita
发明人： Yoshinori Asamura , Yoshiko Hatano , Ken Onishi , Takashi Shiroshita
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
CPC分类号： H04N19/649 , H04N19/186 , H04N19/60 , H04N19/61 , H04N19/62 , H04N19/645 , H04N19/13 , H04N19/91
摘要： An encoding apparatus which structures a band-divided digital image signal into three-dimensional blocks each having a plurality of pixels, discriminates each three-dimensional block between a moving image block and a static image block, and, in the case of a static image block, encodes only the three-dimensional blocks in the lower frequency bands while dropping the three-dimensional blocks in the higher frequency bands. However, of moving image blocks, blocks having a large pixel variance value are encoded as effective image blocks. Also, different size weightings are performed to transform coefficients depending on whether the block is discriminated as a moving image block or a static image block. Furthermore, shuffling is performed on a group of moving image blocks and a group of static image blocks independently of each other, and the transform coefficients for the static image blocks are quantized after quantizing all transform coefficients for the moving image blocks.
摘要翻译：将分割后的数字图像信号构成为具有多个像素的三维块的编码装置，判别运动图像块和静止图像块之间的每个三维块，并且在静态图像的情况下块，仅在较低频带中编码三维块，同时丢弃较高频带中的三维块。然而，对于运动图像块，具有大像素方差值的块被编码为有效图像块。此外，根据块被区分为运动图像块还是静态图像块，执行不同的大小加权来变换系数。此外，对一组运动图像块和一组静态图像块彼此独立地执行混洗，并且在对运动图像块的所有变换系数进行量化之后量化静态图像块的变换系数。

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