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11. 发明授权

US06963606B1 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：US06963606B1
公开(公告)日：2005-11-08
申请号：US09341401
申请日：1998-11-05
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 , H04B1/66
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 input 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 a 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取消成帧，然后由可变长度解码（VLD）部分12进行解码，将其逆量化通过逆量化（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在正交变换域（频域）中进行所需的分辨率转换。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的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的数字信号（MPEG视频信号）输出。

12. 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。

13. 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。

14. 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。

15. 发明授权

US6078723A Picture data recording and/or reproducing apparatus 失效
标题翻译：图像数据记录和/或再现装置
公开(公告)号：US6078723A
公开(公告)日：2000-06-20
申请号：US977748
申请日：1997-11-25
申请人： Naofumi Yanagihara , Nobuaki Izumi
发明人： Naofumi Yanagihara , Nobuaki Izumi
IPC分类号： H04N5/783 , G11B20/10 , H04N5/7826 , H04N5/92 , H04N5/93 , H04N9/804 , H04N9/877 , H04N9/888 , H04N19/102 , H04N19/162 , H04N19/167 , H04N19/423 , H04N19/44 , H04N19/50 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/91
CPC分类号： H04N9/8042 , H04N5/78263 , H04N5/783 , H04N9/877 , H04N9/888
摘要： A recording/reproducing apparatus for reproducing recorded encoded picture data from a recording medium in varying speed without picture disruption. The recorded picture data are read from the recording medium and stored in a buffer memory. A detection circuit detects a picture header in the stored picture data and, depending upon the results of such detection, may or may not supply a clock signal therefrom. If a picture header is not detected, the detection circuit supplies the clock signal to the buffer memory and a delaying circuit. In response thereto, the stored picture data are read out from the buffer memory and supplied to the delaying circuit so as to be delayed by a predetermined amount prior to being supplied therefrom. If a picture header is detected during varying speed reproduction by the detection circuit, the clock signal is not supplied to the buffer memory and the delaying circuit, whereupon the delaying circuit outputs "0"s for a predetermined time period.
摘要翻译：一种记录/再现装置，用于以无变化的速度从记录介质再现记录的编码图像数据而没有图像中断。记录的图像数据从记录介质读取并存储在缓冲存储器中。检测电路检测所存储的图像数据中的图像标题，并且根据这种检测的结果，可以提供或不提供时钟信号。如果没有检测到图像头，则检测电路将时钟信号提供给缓冲存储器和延迟电路。响应于此，存储的图像数据从缓冲存储器读出并提供给延迟电路，以便在被提供之前被延迟预定量。如果在通过检测电路的变速再现期间检测到图像头，则时钟信号不被提供给缓冲存储器和延迟电路，于是延迟电路在预定时间段内输出“0”。

16. 发明授权

US06687296B1 Apparatus and method for transforming picture information 失效
标题翻译：用于转换图片信息的装置和方法
公开(公告)号：US06687296B1
公开(公告)日：2004-02-03
申请号：US09708255
申请日：2000-11-07
申请人： Kazushi Sato , Yu Liu , Naofumi Yanagihara
发明人： Kazushi Sato , Yu Liu , Naofumi Yanagihara
IPC分类号： H04N726
CPC分类号： H04N19/40 , H04N19/132 , H04N19/149 , H04N19/152 , H04N19/177 , H04N19/186 , H04N19/523 , H04N19/61
摘要： An apparatus and a method for transforming picture information can significantly reduce the bit rate. A picture information transform apparatus for receiving as input the compressed picture information obtained by coding the picture information of a plurality of picture type images by ways of orthogonal transform and motion compensation includes a variable length decoder 4 for performing a variable length decoding operation on the input compressed picture information, an inverse quantizer 5 for inversely quantizing the decoded information, a band limiter 7 for limiting the bandwidth, a quantizer 8 and a bit rate controller 9 for computationally determining the target bits for the coded images of each picture type by adaptively using a plurality of parameters operating as coefficients for the contents of the coded images of the picture type on the bais of the contents of the coded images of the picture type.
摘要翻译：用于变换图像信息的装置和方法可以显着地降低比特率。一种图像信息变换装置，用于作为输入接收通过正交变换和运动补偿的方式对多个图像类型图像的图像信息进行编码而获得的压缩图像信息，包括：可变长度解码器4，用于对输入进行可变长度解码操作压缩图像信息，用于对解码信息进行逆量化的逆量化器5，用于限制带宽的频带限制器7，量化器8和比特率控制器9，用于通过自适应地使用每个图像类型的编码图像计算确定目标比特作为图像类型的编码图像的内容的bais上的图像类型的编码图像的内容的系数的多个参数。

17. 发明授权

US06532309B1 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：US06532309B1
公开(公告)日：2003-03-11
申请号：US09450614
申请日：1999-11-30
申请人： Kazushi Sato , Naofumi Yanagihara
发明人： Kazushi Sato , Naofumi Yanagihara
IPC分类号： G06K936
CPC分类号： H04N19/112 , G06T3/4084 , H04N19/45 , H04N19/60
摘要： In a pixel decoding method and apparatus, pixel dephasing caused for the field DCT mode and the frame DCT mode is to be eliminated to curtail the processing volume without detracting from the properties inherent in a picture produced on interlaced scanning. To this end, if the DCT mode is the field mode, a decimating DCT device for field mode 14 performs 4×4 decimating IDCT. If the DCT mode is the frame mode, the decimating DCT device for frame mode 15 performs IDCT on the totality of coefficients of the DCT block, separates the coefficients into two pixel blocks associated with the interlaced scanning and performs DCT separately for the separated two pixel blocks. The low frequency components of these two pixel blocks are IDCT and the two pixel are synthesized.
摘要翻译：在像素解码方法和装置中，消除对于场DCT模式和帧DCT模式引起的像素去相位，以减少处理量，而不会降低隔行扫描中产生的图像中固有的属性。为此，如果DCT模式是场模式，则场模式14的抽取DCT装置执行4×4抽取IDCT。如果DCT模式是帧模式，则用于帧模式15的抽取DCT设备对DCT块的系数的总和执行IDCT，将系数分离成与隔行扫描相关联的两个像素块，并分离对分离的两个像素进行DCT 块。这两个像素块的低频分量是IDCT，并且两个像素被合成。

18. 发明授权

US06438319B1 Recording digital video signals and redundancy signals for error correction 失效
标题翻译：记录数字视频信号和冗余信号进行纠错
公开(公告)号：US06438319B1
公开(公告)日：2002-08-20
申请号：US08813140
申请日：1997-03-07
申请人： Hajime Inoue , Naofumi Yanagihara
发明人： Hajime Inoue , Naofumi Yanagihara
IPC分类号： H04N764
CPC分类号： H04N21/4147 , H04N5/78263 , H04N5/783 , H04N5/913 , H04N9/7973 , H04N9/8042 , H04N9/888 , H04N2005/91321 , H04N2005/91328
摘要： A digital video recorder or player performing error correction coding and decoding in a two separate or paged memories. During a first phase of operation, previously error-corrected or error-encoded data is read from a first memory while simultaneously new data to be error-encoded or error-corrected is stored in the first memory. Meanwhile, the second memory is used for error-encoding or error-decoding of previously-stored data. In the second phase, the memories reverse roles; the data stored in the first memory is error-encoded or error-corrected while previously error-corrected or error-encoded data is read from the second memory and replaced with new data to be error-encoded or error-corrected. These phases are performed in an alternating fashion throughout a record or playback operation.
摘要翻译：数字录像机或播放机在两个单独或分页的存储器中执行纠错编码和解码。在第一操作阶段期间，从第一存储器读取先前错误校正的或错误编码的数据，同时将要进行错误编码或纠错的新数据存储在第一存储器中。同时，第二存储器用于先前存储的数据的错误编码或错误解码。在第二阶段，记忆逆转角色; 存储在第一存储器中的数据被错误编码或纠错，而从第二存储器读取先前错误校正或错误编码的数据，并替换为要进行错误编码或纠错的新数据。这些阶段在整个记录或重放操作中以交替方式执行。

19. 发明授权

US06370322B2 Data decoding system, data decoding method, transmission method, transmission device, receiving device, and receiving method 失效
标题翻译：数据解码系统，数据解码方法，传输方法，传输设备，接收设备和接收方式
公开(公告)号：US06370322B2
公开(公告)日：2002-04-09
申请号：US08926416
申请日：1997-09-09
申请人： Mari Horiguchi , Harumi Kawamura , Naofumi Yanagihara , Makoto Sato , Ichiro Hamada , Takehiko Nakano
发明人： Mari Horiguchi , Harumi Kawamura , Naofumi Yanagihara , Makoto Sato , Ichiro Hamada , Takehiko Nakano
IPC分类号： H04N591
CPC分类号： H04L12/40058 , H04L12/40071 , H04L12/40117 , H04N5/775 , H04N5/85 , H04N9/8042 , H04N9/888
摘要： The encoded data outputted from a DVD player 1 are outputted to and decoded in the decoders 4-1 to 4-3 of digital television receivers 3-1 to 3-3 through an AV bus 5 comprising the IEEE 1394. When a command for changing a system parameter is inputted to any one of the decoders 4-1 to 4-3, the command corresponding to the change is supplied to the DVD player 1 through the AV bus 5. The DVD player 1 changes the system parameter in response to the command and outputs the system parameter to the respective decoders 4-1 to 4-3 through the AV bus 5. Thereby, the system parameter is changed not only in the DVD player but also in other components.
摘要翻译：从DVD播放器1输出的编码数据通过包括IEEE 1394的AV总线5输出到数字电视接收机3-1至3-3的解码器4-1至4-3中并被解码。当改变命令系统参数被输入到解码器4-1至4-3中的任何一个，通过AV总线5将对应于该改变的命令提供给DVD播放器1. DVD播放器1响应于命令，并通过AV总线5将系统参数输出到相应的解码器4-1至4-3。因此，系统参数不仅在DVD播放器中而且在其他组件中改变。

20. 发明授权

US06285824B1 Digital signal processor, processing method, digital signal recording/playback device and digital signal playback method 有权
标题翻译：数字信号处理器，处理方法，数字信号记录/回放装置和数字信号播放方法
公开(公告)号：US06285824B1
公开(公告)日：2001-09-04
申请号：US09188653
申请日：1998-11-09
申请人： Naofumi Yanagihara , Teruyoshi Komuro , Hisato Shima
发明人： Naofumi Yanagihara , Teruyoshi Komuro , Hisato Shima
IPC分类号： H04N5928
CPC分类号： H04L12/40058 , H04L12/40071 , H04L12/40117 , H04N5/4401 , H04N5/783 , H04N7/162 , H04N9/8042 , H04N21/235 , H04N21/2368 , H04N21/4325 , H04N21/434 , H04N21/4341 , H04N21/4345 , H04N21/4347 , H04N21/435 , H04N21/43632 , H04N21/4402 , H04N21/440281
摘要： A MPEG video decoder and MPEG audio decoder respectively decode MPEG video data and MPEG audio data separated by a demultiplexer. A digital interface sends and receives MPEG video data, MPEG audio data and supplementary data between the demultiplexer and external devices. The digital interface detects a flag indicating a discontinuity in a program from an input signal, and a microcomputer performs control so as to initialize the buffer memories.
摘要翻译： MPEG视频解码器和MPEG音频解码器分别解码由解复用器分离的MPEG视频数据和MPEG音频数据。数字接口在解复用器和外部设备之间发送和接收MPEG视频数据，MPEG音频数据和补充数据。数字接口从输入信号中检测出指示程序不连续的标志，并且微计算机执行控制以初始化缓冲存储器。

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