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61. 发明授权

US5845043A Transmission recording and reproduction of digital data and time information in transport packets using a compression ratio 失效
公开(公告)号：US5845043A
公开(公告)日：1998-12-01
申请号：US862066
申请日：1997-05-22
申请人： Naofumi Yanagihara
发明人： Naofumi Yanagihara
IPC分类号： H04N19/149 , G11B5/008 , G11B15/12 , G11B15/18 , G11B15/467 , G11B15/473 , G11B20/12 , G11B27/00 , G11B27/30 , H04B14/04 , H04L12/28 , H04N5/7826 , H04N5/783 , H04N5/926 , H04N7/08 , H04N7/081 , H04N7/56 , H04N7/62 , H04N9/79 , H04N9/797 , H04N9/804 , H04N9/82 , H04N19/00 , H04N19/126 , H04N19/423 , H04N19/625 , H04N19/70 , H04N19/91 , H04N21/41 , H04N21/43 , H04N21/432 , H04N21/433 , H04N21/434 , H04N21/4402 , H04N5/76 , G11B5/00 , G11B5/09
CPC分类号： H04N21/4135 , G11B15/125 , G11B15/1875 , G11B15/4733 , G11B27/005 , G11B27/3027 , G11B27/3036 , G11B27/3063 , H04N21/4305 , H04N21/4325 , H04N21/4334 , H04N21/4344 , H04N21/4402 , H04N5/9262 , H04N5/9264 , H04N7/56 , H04N9/7921 , G11B15/4671 , G11B15/4678 , G11B2220/90 , G11B5/0086 , H04N5/78263 , H04N5/783 , H04N9/797 , H04N9/8042 , H04N9/8227
摘要： A data packet which contains time information is time compressed and the time information is extracted from the time compressed data packet. A system clock is synchronized with the extracted time information and is multiplied by a predetermined compression ratio to produce replacement time information which replaces the time information in the time compressed data packet. The time compressed data packet that now contains the replacement time information is modulated and transmitted or recorded.

62. 发明授权

US5835664A Method and apparatus for recording digital video signals 失效
标题翻译：用于记录数字视频信号的方法和装置
公开(公告)号：US5835664A
公开(公告)日：1998-11-10
申请号：US841114
申请日：1997-04-29
申请人： Yuka Oikawa , Naofumi Yanagihara , Nobuaki Izumi
发明人： Yuka Oikawa , Naofumi Yanagihara , Nobuaki Izumi
IPC分类号： G11B15/12 , G11B15/18 , G11B20/10 , H04N5/7826 , H04N5/783 , H04N5/92 , H04N9/804 , H04N9/87
CPC分类号： H04N9/8047 , G11B15/125 , G11B15/1875 , H04N5/783 , H04N5/78266 , H04N9/87
摘要： A method and an apparatus for reproducing digital video signals in which every one-frame data of the digital video signals are recorded on n tracks of a recording medium by an inclined azimuth recording system are varying speed reproduced by a rotary head having n heads with a varying playback speed such that A=a(t.multidot.m.+-.1)/n, where a is a constant equal to 1 or 2 and m is a constant which is an integer other than 0. A picture corresponding to the digital video signals read out with the varying playback speed S is displayed on the screen. In this manner, non-continuous lines caused by temporal difference in neighboring macro-blocks during varying speed reproduction may be rendered less obtrusive for improving the picture quality of the varying speed reproduced picture.
摘要翻译：一种用于再现数字视频信号的方法和装置，其中通过倾斜方位记录系统将数字视频信号的每一帧数据记录在记录介质的+ E，uns + + EE磁道上，是由旋转头部具有不同重放速度的n个头，使得A = a（txm +/- 1）/ n，其中+ E，uns a + EE是等于1或2和+ E的常数，uns m + EE是常数其是除了0之外的整数。在屏幕上显示与以变化的重放速度S读出的数字视频信号相对应的图像。以这种方式，由于变化速度再现期间的相邻宏块的时间差引起的非连续线可能变得不那么突出，以提高变速再现图像的图像质量。

63. 发明授权

US5677734A Method and apparatus for modifying the quantization step of each macro-block in a video segment 失效
标题翻译：用于修改视频段中的每个宏块的量化步长的方法和装置
公开(公告)号：US5677734A
公开(公告)日：1997-10-14
申请号：US515529
申请日：1995-08-15
申请人： Yuka Oikawa , Naofumi Yanagihara , Nobuaki Izumi
发明人： Yuka Oikawa , Naofumi Yanagihara , Nobuaki Izumi
IPC分类号： H04N5/92 , G11B20/10 , H04N7/54 , H04N9/804 , H04N11/02 , H04N7/12
CPC分类号： H04N9/8047 , H04N19/126 , H04N19/149 , H04N19/176 , H04N19/192 , H04N19/60 , H04N19/88 , H04N7/54 , H04N19/146
摘要： A method and apparatus for recording digital video signals in which digital video signals in the form of DCT coefficients, obtained by e.g., discrete cosine transform, are quantized and compressed so as to be recorded on a recording medium. A first quantization step decision unit determines a quantization step in terms of a video segment made up of plural macro-blocks as a unit so that the quantity of quantized data is less than a pre-set data quantity. A second quantization step decision unit determines a quantization step in terms of the macro-blocks as a unit so that the quantity of quantized data is less than the pre-set data quantity. A quantization unit quantizes the digital video signals with the quantization steps determined by the first quantization step decision unit and the second quantization step decision unit. This enables efficient encoding and improved picture quality.
摘要翻译：用于记录数字视频信号的方法和装置，其中通过例如离散余弦变换获得的DCT系数形式的数字视频信号被量化和压缩，以便被记录在记录介质上。第一量化步骤决定单元以由多个宏块构成的视频段为单位确定量化步长，使得量化数据量小于预设数据量。第二量化步骤决定单元以宏块为单位来确定量化步长，使得量化数据量小于预设数据量。量化单元利用由第一量化步长决定单元和第二量化步骤决定单元确定的量化步长量化数字视频信号。这使得能够进行有效的编码和改进的图像质量。

64. 发明授权

US5648855A Method and apparatus for varying-speed reproduction of digital video signals 失效
标题翻译：用于数字视频信号的变速再现的方法和装置
公开(公告)号：US5648855A
公开(公告)日：1997-07-15
申请号：US520839
申请日：1995-08-29
申请人： Naofumi Yanagihara
发明人： Naofumi Yanagihara
IPC分类号： H04N5/92 , G11B5/588 , G11B15/18 , G11B15/467 , G11B20/10 , H04N5/7826 , H04N5/783 , H04N7/52 , H04N9/804 , H04N9/82 , H04N5/76 , G11B15/46
CPC分类号： H04N21/236 , G11B15/1875 , G11B15/4678 , H04N21/434 , H04N9/8042 , H04N5/78266 , H04N5/783 , H04N9/8227
摘要： A varying speed reproducing method of digital video signals is disclosed. With this method, digital video signals are reproduced in a phase locked state from a magnetic tape by applying a phase servo to a tape running system using the difference between the number of a pre-set one of sync blocks reproduced by each tracing by a rotary magnetic head and the number of a target sync block as a phase error. Thus the pre-set sync block may be positively reproduced by each tracing by the rotary magentic head during varying speed reproduction of the magentic tape having the digital video signals recorded on the inclined tracks thereof. A reproducing apparatus is also disclosed. With the reproducing apparatus, digital video signals may be reproduced from the magnetic tape in a phase locked state by feeding back the phase error signal from the phase error signal generating means to the phase loop of the tape running system designed for running the magnetic tape during varying speed reproduction. This enables the pre-set sync block to be positively reproduced by each tracing by the rotary magnetic head during varying speed reproduction of the magnetic tape having the digital video signals recorded on the inclined tracks thereof.
摘要翻译：公开了数字视频信号的变速再现方法。利用这种方法，数字视频信号通过将相位伺服施加到磁带运行系统，使用由每个跟踪再现的预定的一个同步块的数量之间的差异旋转地从磁带中以相位锁定状态再现磁头和目标同步块的数量作为相位误差。因此，通过在具有记录在其倾斜轨迹上的数字视频信号的磁带的变速再现期间，旋转磁头的每次跟踪可以正确地再现预设同步块。还公开了一种再现装置。利用再现装置，可以通过将相位误差信号从相位误差信号发生装置反相到设计用于运行磁带的磁带运行系统的相位回路，以相位锁定状态从磁带再现数字视频信号变速再现。这使得通过在具有记录在其倾斜轨道上的数字视频信号的磁带的变速再现期间，通过旋转磁头的每次跟踪来使预设同步块被正确地再现。

65. 发明授权

US5557479A Apparatus and method for recording and reproducing digital video signal data by dividing the data and encoding it on multiple coding paths 失效
标题翻译：通过划分数据并将其编码在多个编码路径上来记录和再现数字视频信号数据的装置和方法
公开(公告)号：US5557479A
公开(公告)日：1996-09-17
申请号：US568403
申请日：1995-12-15
申请人： Naofumi Yanagihara
发明人： Naofumi Yanagihara
IPC分类号： H04N5/783 , H04N7/26 , H04N9/797 , H04N9/804 , G11B5/00 , H04N5/76
CPC分类号： H04N9/7973 , H04N19/85 , H04N19/30 , H04N5/783 , H04N9/8047
摘要： An input video signal composed of a luminance signal Y, and color difference signals PR and PB. The video signal is converted into digital signals. A plurality of coding paths are provided. The digital video signals are processed in shuffling circuit, DCT circuit, quantizing circuit, variable length code encoding circuit, and frame segmenting circuit on the coding paths. The signals encoded on the coding paths are converted into data with two channels. The data with two channels are recorded on a recording medium. The data are allocated to a predetermined region of a magnetic tape so that a block of data is reproduced as bursts on a screen in a variable speed reproduction mode.
摘要翻译：由亮度信号Y和色差信号PR和PB组成的输入视频信号。视频信号被转换为数字信号。提供多个编码路径。数字视频信号在编码路径上的混洗电路，DCT电路，量化电路，可变长度码编码电路和帧分割电路中进行处理。在编码路径上编码的信号被转换成具有两个通道的数据。具有两个通道的数据被记录在记录介质上。数据被分配给磁带的预定区域，使得数据块以可变速度再现模式的屏幕上的突发显示被再现。

66. 发明授权

US5557420A Method and apparatus for recording video signals on a record medium 失效
标题翻译：用于在记录介质上记录视频信号的方法和装置
公开(公告)号：US5557420A
公开(公告)日：1996-09-17
申请号：US283652
申请日：1994-08-01
申请人： Naofumi Yanagihara , Keiji Kanoto , Yukio Kubota
发明人： Naofumi Yanagihara , Keiji Kanoto , Yukio Kubota
IPC分类号： H04N5/92 , H04N5/926 , H04N9/804 , H04N9/808 , H04N5/76
CPC分类号： H04N5/9264 , H04N9/8047
摘要： Methods and apparatus are provided for recording video signals in a plurality of tracks on a recording medium. In certain embodiments, first and second video signal intervals include respective first and second common sub-area signals representing at least one common sub-area of a video screen. The common sub-area signals of the first and second video signal intervals are recorded at respectively different locations within the plurality of tracks. In certain embodiments, component color video signals including luminance signals and first and second color difference signals are divided into a plurality of discrete cosine transformation (DCT) blocks and blocks representing common respective subdivisions of a video screen are assembled into corresponding macro blocks. Adjacent macro blocks are assembled into super macro blocks which, in turn, are arranged in a shuffled sequence relative to the positions of their subdivisions on the video screen for recording in the shuffled sequence. In certain embodiments, digital video signals representing a video screen are recorded in a plurality of tracks on a recording medium after dividing the digital video signals into a plurality of macro blocks assembled into sub-area groups of the video screen. The sub-area groups are shuffled by forming a sequence of track units each including a plurality of the sub-area groups one each from a respective horizontal division of the video screen. Each track unit is recorded in a respective one of a plurality tracks on the recording medium.
摘要翻译：提供了用于在记录介质上的多个磁道中记录视频信号的方法和装置。在某些实施例中，第一和第二视频信号间隔包括表示视频屏幕的至少一个公共子区域的相应的第一和第二公共子区域信号。第一和第二视频信号间隔的公共子区域信号被记录在多个轨道内的不同位置处。在某些实施例中，包括亮度信号和第一和第二色差信号的分量彩色视频信号被分成多个离散余弦变换（DCT）块，并且表示视频屏幕的共同相应细分的块被组合成相应的宏块。相邻宏块被组装成超宏块，其又相对于它们在视频屏幕上的子部分的位置以混洗顺序排列，以便以混洗序列记录。在某些实施例中，表示视频屏幕的数字视频信号在将数字视频信号划分成组合成视频屏幕的子区域组的多个宏块之后被记录在记录介质上的多个磁道中。通过形成一系列轨道单元来混合子区域组，每个轨道单元包括多个子区域组，每个子区域组分别来自视频屏幕的相应水平划分。每个轨道单元被记录在记录介质上的多个轨道中的相应一个轨道中。

67. 发明授权

US5404168A Method and apparatus for encoding an image signal using a multi-stage quantizing number determiner 失效
标题翻译：使用多级量化数确定器对图像信号进行编码的方法和装置
公开(公告)号：US5404168A
公开(公告)日：1995-04-04
申请号：US19872
申请日：1993-02-19
申请人： Takaaki Yamada , Naofumi Yanagihara , Hiroshi Okada
发明人： Takaaki Yamada , Naofumi Yanagihara , Hiroshi Okada
IPC分类号： H04N5/92 , H04N5/926 , H04N19/126 , H04N19/134 , H04N19/149 , H04N19/174 , H04N19/186 , H04N19/192 , H04N19/196 , H04N19/42 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/70 , H04N19/88 , H04N19/91 , H04N7/133
CPC分类号： H04N5/9264 , H04N19/126 , H04N19/149 , H04N19/15 , H04N19/176 , H04N19/60 , H04N19/85 , H04N19/88 , H04N19/13 , H04N19/146 , H04N19/91
摘要： A quantizing number is determined using multiple stages of code amount estimating circuits. Thus, an optimum quantizing number may be selected from among a number of quantizing numbers which is not limited to the number of code amount estimating circuits. The optimum quantizing number is used to quantize a set of blocks of orthogonally transformed image data. The quantized data are encoded using a variable length code. The optimum quantizing number is the one which results in the greatest amount of data that is within a predetermined threshold, permitting an amount of encoded data to be recorded on a magnetic tape in a fixed format.
摘要翻译：使用多级代码量估计电路确定量化数。因此，可以从不限于代码量估计电路的数量的多个量化数中选择最佳量化数。最佳量化数用于量化一组正交变换图像数据块。量化数据使用可变长度码进行编码。最佳的量化数是导致最大数据量在预定阈值内的数量，允许以固定格式将一定数量的编码数据记录在磁带上。

68. 发明申请

US20050157786A1 Digital signal conversion method and digital signal conversion device 失效
标题翻译：数字信号转换方法和数字信号转换装置
公开(公告)号：US20050157786A1
公开(公告)日：2005-07-21
申请号：US11081208
申请日：2005-03-16
申请人： Naofumi Yanagihara , Nobuaki Izumi
发明人： Naofumi Yanagihara , Nobuaki Izumi
IPC分类号： H04N19/103 , H04N19/114 , H04N19/126 , H04N19/134 , H04N19/136 , H04N19/137 , H04N19/146 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/40 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/513 , H04N19/577 , H04N19/59 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/85 , H04N19/88 , H04N19/91 , H04N7/12
CPC分类号： H04N19/59 , H04N19/107 , H04N19/122 , H04N19/124 , H04N19/126 , H04N19/13 , H04N19/137 , H04N19/152 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/197 , H04N19/40 , H04N19/46 , H04N19/48 , H04N19/547 , H04N19/56 , H04N19/57 , H04N19/60 , H04N19/61 , H04N19/91
摘要： An inputted digital signal of a first format (DV video signal) is restored to a variable-length code by having its framing cancelled by a de-framing section 11, then decoded by a variable-length decoding (VLD) section 12, inversely quantized by an inverse quantizing (IQ) section 13, and inversely weighted by an inverse weighting (IW) section 14. Then, required resolution conversion in the orthogonal transform domain (frequency domain) is carried out on the inversely weighted video signal by a resolution converting section 16. After that, the video signal having the resolution converted is weighted by a weighting (W) section 18, then quantized by a quantizing (Q) section 19, coded by variable-length coding by a variable-length coding (VLC) section 20, and outputted as a digital signal of a second format (MPEG video signal).
摘要翻译：将第一格式（DV视频信号）的输入数字信号通过由去帧部分11消除其成帧而被恢复为可变长度码，然后由可变长度解码（VLD）部分12解码，反量化通过逆量化（IQ）部分13，并通过反向加权（IW）部分14反相加权。然后，通过分辨率转换部分16对反相加权的视频信号执行正交变换域（频域）中的所需分辨率转换。之后，通过加权（W）部分18对具有分辨率转换的视频信号进行加权，然后由可变长度编码（VLC）部分20通过可变长度编码编码的量化（Q）部分19进行量化，并作为第二格式（MPEG视频信号）的数字信号输出。

69. 发明授权

US06763037B1 Transmitting apparatus and method, receiving apparatus and method 失效
标题翻译：发射装置及方法，接收装置及方法
公开(公告)号：US06763037B1
公开(公告)日：2004-07-13
申请号：US09461248
申请日：1999-12-15
申请人： Naofumi Yanagihara , Mari Horiguchi , Makoto Sato , Ichiro Hamada , Takehiko Nakano
发明人： Naofumi Yanagihara , Mari Horiguchi , Makoto Sato , Ichiro Hamada , Takehiko Nakano
IPC分类号： H04J324
CPC分类号： H04L12/40058 , H04L12/40071 , H04L12/40117 , H04N21/23602 , H04N21/4342 , H04N21/43615 , H04N21/43632
摘要： A transmitting apparatus and method, and a receiving apparatus and method for communicating a pack of 2,048 bytes using the digital interface in accordance with the IEEE 1394 standard. A 4-byte time stamp is added to a 2,048-byte pack of MPEG (Moving Picture Experts Group)—PS (program stream) data. Also, 124 bytes of padding data is added to this pack in order that the overall byte length of data be a multiple of 16. Then the data is divided into a number of fractions which is a multiple of 2 (e.g., 32), thereby being converted into a number of data blocks equal to the number of fractions. Each data block has a byte length of a multiple of 4 (e.g., 68 bytes). A CIP header and the like are added to a predetermined number of the data blocks to form a packet.
摘要翻译：一种发送装置和方法，以及用于使用根据IEEE 1394标准的数字接口来传送2048字节的数据包的接收装置和方法。将4字节的时间戳添加到MPEG（运动图像专家组）-PS（节目流）数据的2,048字节的包中。此外，将124字节的填充数据添加到该包中，以使数据的总字节长度为16的倍数。然后将数据划分为2的倍数（例如32）的数量级，从而被转换成等于分数的数量的数据块。每个数据块具有4的倍数的字节长度（例如，68字节）。将CIP标题等添加到预定数量的数据块中以形成分组。

70. 发明授权

US06748018B2 Picture decoding method and apparatus 失效
标题翻译：图像解码方法及装置
公开(公告)号：US06748018B2
公开(公告)日：2004-06-08
申请号：US09369001
申请日：1999-08-05
申请人： Kazushi Sato , Kenji Komori , Tetsuo Kaneko , Satoshi Mitsuhashi , Naofumi Yanagihara
发明人： Kazushi Sato , Kenji Komori , Tetsuo Kaneko , Satoshi Mitsuhashi , Naofumi Yanagihara
IPC分类号： H04B166
CPC分类号： H04N19/59 , H04N19/112 , H04N19/117 , H04N19/132 , H04N19/139 , H04N19/156 , H04N19/159 , H04N19/16 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/48 , H04N19/523 , H04N19/61 , H04N19/90
摘要： An MPEG downdecoder is to be provided which eliminates dephasing of pixels of moving picture data without losing properties inherent in a picture obtained on interlaced scanning. If an interlaced picture is inputted, and the DCT mode is the field mode, an interlaced picture accommodating picture decoding unit 3 executes 4×4 decimating IDCT. If the DCT mode is the frame mode, the entire coefficients of the DCT block are IDCTed for separation into two pixel blocks associated with interlaced scanning. The separated two pixel blocks are DCTed. The coefficients of the low-frequency components are IDCTed and the two pixel blocks are synthesized together. A progressive picture accommodating picture decoding unit 2 is fed with a progressive picture. The coefficients of the low-frequency components of the DCT block are inverse orthogonal transformed.
摘要翻译：将提供一种MPEG降解编码器，其消除了运动图像数据的像素的去相位，而不会损失在隔行扫描中获得的图像中固有的特性。如果隔行扫描图像被输入，并且DCT模式是场模式，则隔行图像容纳图像解码单元3执行4×4抽取IDCT。如果DCT模式是帧模式，则DCT块的整个系数被IDCTed分离成与隔行扫描相关联的两个像素块。分离的两个像素块是DCT。低频分量的系数被IDCTed并且两个像素块被合成在一起。逐行图像适应图像解码单元2被馈送逐行图像。 DCT块的低频分量的系数被逆正交变换。

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