公开(公告)号：US06370324B1

公开(公告)日：2002-04-09

申请号：US09200699

申请日：1998-11-27

申请人： Minoru Kawahara ,  Kenji Yamasaki

发明人： Minoru Kawahara ,  Kenji Yamasaki

IPC分类号： H04N726

CPC分类号： G11B20/10 ,  G11B20/00007 ,  G11B20/1809 ,  G11B20/1813 ,  Y10S358/906

摘要： A signal reproduced from an ADV head, which is advanced a recording head is error corrected in the ECC decoder. The compression encoding process is decompressed in the compression decoder. The output signal of the ECC decoder is input to the selector. A reproduction signal of the CNF head reproducing a recording data just after recording is supplied to a selector through a ECC decoder and a compression decoder. A bypass signal from the ECC encoder of the recording side is supplied to the the ECC decoder as it's another input. In the ECC decoder, two types of data are written to two different areas of the memory. One of the data is read out selectively and supplied to the selector. The selector is switched from the output of the ADV head to the bypass signal at an in-point. The preview operation can be attained by the picture that has been compressed and decompressed.

摘要翻译： 在ECC解码器中对从REC头进行再现的信号进行纠错。 压缩编码处理在压缩解码器中解压缩。 ECC解码器的输出信号被输入到选择器。 在记录之后再现记录数据的CNF头的再现信号通过ECC解码器和压缩解码器提供给选择器。 来自记录侧的ECC编码器的旁路信号作为另一个输入被提供给ECC解码器。 在ECC解码器中，将两种类型的数据写入存储器的两个不同区域。 其中一个数据被有选择地读出并提供给选择器。 选择器在入口处从ADV头的输出切换到旁路信号。 可以通过压缩和解压缩的图像来实现预览操作。

公开(公告)号：US06304339B1

公开(公告)日：2001-10-16

申请号：US09192912

申请日：1998-11-16

申请人： Steven O Miller ,  Elden Wood

发明人： Steven O Miller ,  Elden Wood

IPC分类号： H04N726

CPC分类号： H04N1/41

摘要： A fast, raster-based, enhanced, data compression technique for the printing of compound documents, including pre-processing images in an original page description form of the data before the page data is rasterized, greatly improving compressibility. Unscaled image data is filtered before it is rasterized to the final printing resolution. The filtering specifically enables a separate, near loss-less, compression algorithm to operate on a rasterized page description with high compression ratios. A data compression technique enables a system to compress compound document using a relatively fast and simple algorithm with near loss-less print quality.

摘要翻译： 用于打印复合文档的快速，基于光栅的增强的数据压缩技术，包括在页面数据被光栅化之前的原始页面描述形式的数据的预处理图像，大大提高了可压缩性。 在将光标化为最终打印分辨率之前，将过滤未缩放的图像数据。 该滤波专门实现了一种单独的，近无损的压缩算法，可在具有高压缩比的光栅化页面描述上进行操作。 数据压缩技术使得系统能够使用具有近无损打印质量的相对快速和简单的算法来压缩复合文档。

公开(公告)号：US06226326B1

公开(公告)日：2001-05-01

申请号：US09368550

申请日：1999-08-05

申请人： Kanji Mihara

发明人： Kanji Mihara

IPC分类号： H04N726

CPC分类号： H04N21/23655 ,  H04N19/115 ,  H04N19/146 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/61

摘要： A video encoder for changing the bit rate at a halfway point in a GOP by using a TM5 (Test Model 5) bit rate control algorithm is provided. Using a bit quantity Rj(+1) allocated to non-coded pictures at and after a coding target picture (j+1), a target bit quantity T(j+1) allocated to the coding target picture (j+1) is calculated. In the case where pictures up to a picture (j) at a halfway point in a GOP are coded at a first bit rate and the picture (j+1) is coded at a second bit rate, the bit quantity R(j+1) allocated to non-coded pictures for calculating the target bit quantity R(j+1) is corrected to a bit quantity R(j+1) for non-coded pictures at the time when the pictures from a leading picture of the GOP are coded at the second bit rate. Thus, seamless bit rate change can be carried out at a halfway point in the GOP by using the fixed rate algorithm such as TM5.

摘要翻译： 提供了一种用于通过使用TM5（测试模型5）比特率控制算法在GOP中的中点改变比特率的视频编码器。 使用分配给编码对象图像（j + 1）之后和之后的非编码图像的位量Rj（+1），分配给编码对象图像（j + 1）的目标比特量T（j + 1）为 计算。 在GOP中的中间点的图像（j）以第一比特率进行编码的图像（j + 1）以第二比特率进行编码的情况下，比特数量R（j + 1 ）分配给用于计算目标比特数量R（j + 1）的非编码图像的编码图像被校正为当来自GOP的前导图像的图像为非编码图像时的比特量R（j + 1） 以第二比特率编码。 因此，可以通过使用诸如TM5的固定速率算法在GOP中的中点进行无缝比特率改变。

公开(公告)号：US06205287B1

公开(公告)日：2001-03-20

申请号：US08591721

申请日：1996-01-25

申请人： Koji Takahashi ,  Toshihiro Yagisawa ,  Yoshinori Abe ,  Atsushi Suzuki

发明人： Koji Takahashi ,  Toshihiro Yagisawa ,  Yoshinori Abe ,  Atsushi Suzuki

IPC分类号： H04N726

CPC分类号： H04N19/186 ,  H04N19/61

摘要： An image forming apparatus includes a supplier for supplying moving image data obtained by selectively encoding an original image signal using intraframe encoding and interframe encoding. Also provided is a memory for storing the moving image data and an extractor for extracting intraframe encoded image data from the moving image data. The apparatus also includes an instructor unit for instructing the memory to store the extracted image data and a controller for controlling the memory so as to store the image data extracted by the extractor in a predetermined time period in response to an instruction from the instructor.

摘要翻译： 一种图像形成装置，包括供应器，用于提供通过使用帧内编码和帧间编码来选择性地编码原始图像信号获得的运动图像数据。 还提供了用于存储运动图像数据的存储器和用于从运动图像数据中提取帧内编码图像数据的提取器。 该装置还包括：指示单元，用于指示存储器提取的图像数据;以及控制器，用于控制存储器，以便响应于来自教师的指令，在提取器中提取的图像数据在预定时间段内存储。

公开(公告)号：US06721492B1

公开(公告)日：2004-04-13

申请号：US09418265

申请日：1999-10-14

申请人： Haruo Togashi

发明人： Haruo Togashi

IPC分类号： H04N726

CPC分类号： G11B27/3027 ,  G11B20/10 ,  G11B20/1252 ,  H04N5/783 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8063 ,  H04N19/129 ,  H04N19/18 ,  H04N19/625 ,  H04N19/88

摘要： In order to obtain a high-quality image when an encoded stream which is encoded using MPEG is played back at variable speed, a stream conversion apparatus is provided which converts an arrangement of DCT coefficients of a source encoded stream into an arrangement suitable for variable-speed playback. Specifically, a header part is separated from an elementary stream of MPEG, and DCT coefficients arranged from a low order of a spatial frequency to a high order are extracted by zigzag scan at intervals of a plurality of DCT blocks which form a macro block. These DCT coefficients are rearranged from a low order to a high order across a plurality of DCT blocks. The DCT coefficients rearranged in this manner are packed into a stream, and the separated header part is added, forming a converted elementary stream. This converted elementary stream is recorded. During high-speed playback, even if there is an error in the middle of the macro block, since decoding is possible using a low-order DCT coefficient, high-quality image video data can be obtained.

摘要翻译： 为了在使用MPEG编码的编码流以可变速度进行再现的情况下获得高品质图像，提供了一种流转换装置，其将源编码流的DCT系数的排列转换成适于可变频率的装置， 速度播放。 具体地说，将标题部分与MPEG的基本流分开，并且从空间频率的低阶到高阶排列的DCT系数以形成宏块的多个DCT块的间隔的Z字形扫描提取。 这些DCT系数在多个DCT块中从低阶重新排列成高阶。 以这种方式重新排列的DCT系数被打包成流，并且分离的报头部分被添加，形成转换的基本流。 记录转换后的基本流。 在高速播放期间，即使在宏块的中间存在错误，由于可以使用低阶DCT系数进行解码，因此可以获得高质量的图像视频数据。

公开(公告)号：US06707986B2

公开(公告)日：2004-03-16

申请号：US09824207

申请日：2001-04-03

申请人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

发明人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

IPC分类号： H04N726

CPC分类号： H04N7/52 ,  H04N19/46 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654

摘要： A data structure of an image signal includes a reproduction cycle identifier indicating whether the cycle of image display for each frame is variable or not. When the display cycle identifier indicates that the display cycle is fixed, display cycle data is inserted in a header of the coded image data, and data relating to the frame number is inserted in each frame. On the other hand, when the display cycle identifier indicates that the display cycle is variable, display time data is inserted for each frame. Therefore, when decoding and displaying the coded image data having a fixed display cycle, the decoded image data can be displayed by a simple circuit structure, i.e., based on the display cycle data and the frame number data having a relatively small data quantity (bit number), without referring to the display time data having a relatively large data quantity for each frame. Furthermore, this data structure can be applied to a coded image signal having a variable display cycle.

摘要翻译： 图像信号的数据结构包括指示每帧的图像显示周期是否可变的再现周期标识符。 当显示周期标识符指示显示周期固定时，将显示周期数据插入编码图像数据的标题中，并且在每帧中插入与帧号相关的数据。 另一方面，当显示周期标识符指示显示周期是可变的时，针对每个帧插入显示时间数据。 因此，当解码和显示具有固定显示周期的编码图像数据时，解码图像数据可以通过简单的电路结构显示，即，基于显示周期数据和具有相对较小数据量的位数（bit 数字），而不参考每帧具有相对较大数据量的显示时间数据。 此外，该数据结构可以应用于具有可变显示周期的编码图像信号。

公开(公告)号：US06707983B1

公开(公告)日：2004-03-16

申请号：US09316026

申请日：1999-05-21

申请人： Hiroaki Endo

发明人： Hiroaki Endo

IPC分类号： H04N726

CPC分类号： H04N5/772 ,  G11B27/032 ,  G11B27/034 ,  G11B2220/90 ,  H04N5/765 ,  H04N5/9264

摘要： First image data and second image data different from the first image data are input in an image processing apparatus/method. At least one of the first image data and the second image data is encoded while being subjected to orthogonal transformation processing. The first image data and the second image data are transformed into first and second orthogonal transformation coefficient data, and the first and second orthogonal transformation coefficient data are synthesized. A recording medium capable of being read by a computer stores an image processing program for the image processing method.

摘要翻译： 在图像处理装置/方法中输入与第一图像数据不同的第一图像数据和第二图像数据。 在进行正交变换处理的同时对第一图像数据和第二图像数据中的至少一个进行编码。 将第一图像数据和第二图像数据变换为第一和第二正交变换系数数据，并且合成第一和第二正交变换系数数据。 能够由计算机读取的记录介质存储图像处理方法的图像处理程序。

公开(公告)号：US06701065B1

公开(公告)日：2004-03-02

申请号：US09477983

申请日：2000-01-05

申请人： Pratish R. Desai

发明人： Pratish R. Desai

IPC分类号： H04N726

CPC分类号： H04N21/23406 ,  G11B20/10527 ,  G11B20/1251 ,  G11B2020/1277 ,  G11B2220/2537 ,  G11B2220/2562 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N9/8205 ,  H04N9/8227 ,  H04N9/877 ,  H04N21/44004

摘要： A system for processing information, such as audio/video information utilized in a DVD player, can be implemented without the need for a buffer, such as a track buffer, located between the source of audio/video information and the demultiplexer which parses a packet of data. The packet of data can then be parsed into audio, video, subpicture, or navigation, portions and stored for decoding. In one embodiment, a DVD player utilizes a circuit that is synchronized to the speed of the DVD drive rather than to the speed of the decoders for each portion of data.

摘要翻译： 可以实现用于处理诸如DVD播放器中使用的音频/视频信息的信息的系统，而不需要位于音频/视频信息源和解析分组之间的解复用器之类的诸如轨道缓冲器之类的缓冲器 数据的。 然后可以将数据分组解析为音频，视频，子图像或导航部分，并存储用于解码。 在一个实施例中，DVD播放器利用与DVD驱动器的速度同步的电路，而不是每个数据部分的解码器的速度。

公开(公告)号：US06697432B2

公开(公告)日：2004-02-24

申请号：US08901289

申请日：1997-07-31

申请人： Naofumi Yanagihara ,  Takehiko Nakano

发明人： Naofumi Yanagihara ,  Takehiko Nakano

IPC分类号： H04N726

CPC分类号： H04N21/4135 ,  H04N5/775 ,  H04N9/8042 ,  H04N9/8205 ,  H04N21/235 ,  H04N21/2389 ,  H04N21/4334 ,  H04N21/434 ,  H04N21/435 ,  H04N21/43632 ,  H04N21/4385 ,  H04N2005/91328

摘要： At least one program is selected from MPEG encoded transport streams carrying a plurality of packets, and is recorded/reproduced without a need to determine the contents of those transport streams. When an MPEG encoded transport stream containing at least one program is selected, additional data is attached to each packet of this transport stream. The additional information indicates how many programs are contained in the selected MPEG encoded transport stream; indicates an error in the MPEG encoded transport stream; and indicates a transition point representing a beginning of a program in the MPEG encoded transport stream.

摘要翻译： 从携带多个分组的MPEG编码传输流中选择至少一个节目，并且被记录/再现，而不需要确定这些传输流的内容。 当选择包含至少一个节目的MPEG编码传输流时，附加数据附加到该传输流的每个分组。 附加信息指示所选择的MPEG编码传输流中包含多少节目; 指示MPEG编码的传输流中的错误; 并且指示表示MPEG编码传输流中的节目开始的转换点。

公开(公告)号：US06658379B1

公开(公告)日：2003-12-02

申请号：US09155936

申请日：1999-03-04

申请人： Masami Ogata

发明人： Masami Ogata

IPC分类号： H04N726

CPC分类号： G06F17/148 ,  H04N19/635 ,  H04N19/80

摘要： An data processing apparatus for performing signal processing on an input signal having a finite length. The apparatus performs a wavelet transform to divide the input signal into sub-bands for signal processing. An extrapolation process is performed to limit transform artifacts at the leading and trailing ends of each sub-band of the finite length signal. An extrapolation processing discriminator is used to determine whether the extrapolation process satisfies a complete reconstruction condition, whereby an output signal will be a substantial reconstruction of the input signal. The extrapolation process is chosen from among four different loopback methods.

摘要翻译： 一种用于对具有有限长度的输入信号进行信号处理的数据处理装置。 该装置执行小波变换以将输入信号划分成用于信号处理的子带。 执行外推处理以限制有限长度信号的每个子带的前端和后端的变换伪像。 使用外推处理鉴别器来确定外插过程是否满足完整的重建条件，由此输出信号将是输入信号的实质重建。 外插过程选自四种不同的环回方法。