公开(公告)号：US5402281A

公开(公告)日：1995-03-28

申请号：US29583

申请日：1993-03-11

申请人： Naofumi Yanagihara ,  Yukio Kubota ,  Isao Saito

发明人： Naofumi Yanagihara ,  Yukio Kubota ,  Isao Saito

IPC分类号： G11B5/008 ,  G11B5/592 ,  G11B15/467 ,  G11B5/584

CPC分类号： G11B15/4678 ,  G11B5/00878 ,  G11B5/5922

摘要： A tracking control apparatus for a rotary head type recording unit having a first rotary head and a second rotary head for forming pairs of slant tracks on a magnetic type, each track having a head entering side tracking region and a head leaving side tracking region. First and second pilot signals of different frequencies are recorded in the head entering and head laving sides tracking region, with the first pilot signal being recorded at a predetermined position on the first track which precedes (in the track direction) the second pilot signal recorded at a predetermined position on the second track adjacent to the first track.

摘要翻译： 一种用于旋转头型记录单元的跟踪控制装置，具有第一旋转头和第二旋转头，用于形成磁性对的倾斜轨道对，每个轨道具有头部进入侧跟踪区域和头部离开侧跟踪区域。 不同频率的第一和第二导频信号被记录在磁头进入和磁头分离侧跟踪区域中，其中第一导频信号被记录在第一磁道上的预定位置（在磁道方向上）记录在第二导频信号 在与第一轨道相邻的第二轨道上的预定位置。

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。

公开(公告)号：US5606422A

公开(公告)日：1997-02-25

申请号：US441995

申请日：1995-05-16

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 ,  H04N9/79 ,  G11B5/00

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。

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。

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。

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。

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。

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。

公开(公告)号：US6061495A

公开(公告)日：2000-05-09

申请号：US891547

申请日：1997-07-11

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”。

公开(公告)号：US5909532A

公开(公告)日：1999-06-01

申请号：US869848

申请日：1997-06-05

申请人： Keiji Kanota ,  Tadashi Ezaki ,  Masaki Oguro ,  Naofumi Yanagihara ,  Hiroshi Fukuda

发明人： Keiji Kanota ,  Tadashi Ezaki ,  Masaki Oguro ,  Naofumi Yanagihara ,  Hiroshi Fukuda

IPC分类号： G11B20/12 ,  G11B23/087 ,  G11B27/036 ,  G11B27/11 ,  G11B27/30 ,  H04N5/7826 ,  H04N7/00 ,  H04N7/087 ,  H04N9/804 ,  H04N9/806 ,  H04N9/82 ,  H04N9/83 ,  H04N9/885 ,  H04N9/79

CPC分类号： G11B27/036 ,  G11B20/1208 ,  G11B23/08714 ,  G11B27/11 ,  G11B27/3027 ,  G11B27/3063 ,  H04N7/007 ,  H04N7/087 ,  H04N9/8047 ,  H04N9/8063 ,  H04N9/8205 ,  H04N9/8233 ,  H04N9/832 ,  G11B2220/655 ,  H04N5/78266 ,  H04N9/885

摘要： The television signal recording/reproducing system digitally records and reproduces television signals composed of a luminance signal, a chrominance signal and a resolution compensation signal included in predetermined television scanning lines. The system includes a Y/C separating circuit for separating the luminance signal Y from the chrominance signal C. The luminance signal Y and the resolution compensation signal are combined onto a first signal line. A demodulating circuit demodulates the chrominance signal into a color difference signal and outputs the demodulated signal to a second signal line. A digital video signal recorder digitally process the signals on the first signal line separately from the signals on the second signal line and records the digitally processed signals. In this manner, the resolution compensation signal is processed with the luminance signal and the resolution compensation signal can be accurately recorded.

摘要翻译： 电视信号记录/再现系统数字地记录和再现包括在预定电视扫描线中的亮度信号，色度信号和分辨率补偿信号组成的电视信号。 该系统包括用于将亮度信号Y与色度信号C分离的Y / C分离电路。亮度信号Y和分辨率补偿信号被组合到第一信号线上。 解调电路将色度信号解调为色差信号，并将解调信号输出到第二信号线。 数字视频信号记录器与第二信号线上的信号分离地对第一信号线上的信号进行数字处理并记录数字处理的信号。 以这种方式，利用亮度信号处理分辨率补偿信号，并且可以精确地记录分辨率补偿信号。