公开(公告)号：US06970938B2

公开(公告)日：2005-11-29

申请号：US10032917

申请日：2001-12-27

申请人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H03M7/40 ,  H04N19/00 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  H04N19/89 ,  H04N19/895 ,  G06F15/16

CPC分类号： H04B1/715 ,  H04B2001/7154 ,  H04N19/89 ,  H04N19/895

摘要： A detection circuit detects a slice start code from an input stream. Based on a result of the detection and a frame pulse, a reference macroblock (MB) address generated by a timing generator is sent to an address comparator. The input stream which has been phase-adjusted by a delay circuit is supplied to a variable length decoder (VLD) for decoding a variable length code to detect an MB address. The address comparator compares the reference MB address with the MB address to check the continuity of the MB address. If it is discontinuous, the stream output from the VLD is temporarily interrupted, and a selector selects a replacement data generating circuit in response to a control signal output from the address comparator. The input stream is replaced at a discontinuous macroblock portion with macroblock data which has a correct macroblock address and which is prepared in advance by the replacement data generating circuit. This provides stable processing of macroblock discontinuities when I-pictures in an MPEG stream are input.

摘要翻译： 检测电路从输入流检测切片起始码。 基于检测结果和帧脉冲，由定时发生器产生的参考宏块（MB）地址被发送到地址比较器。 通过延迟电路进行相位调整的输入流被提供给可变长度解码器（VLD），用于解码可变长度代码以检测MB地址。 地址比较器将参考MB地址与MB地址进行比较，以检查MB地址的连续性。 如果不连续，则从VLD输出的流暂时中断，并且选择器响应于从地址比较器输出的控制信号选择替换数据产生电路。 在具有正确的宏块地址的宏块数据的不连续宏块部分替换输入流，并由替换数据产生电路预先准备。 当输入MPEG流中的I图像时，这提供了宏块不连续性的稳定处理。

公开(公告)号：US07916994B2

公开(公告)日：2011-03-29

申请号：US10219409

申请日：2002-08-15

申请人： Shin Todo ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

发明人： Shin Todo ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

IPC分类号： H04N5/91

CPC分类号： H04N19/70 ,  H04N5/78263 ,  H04N9/7921 ,  H04N9/8042

摘要： When a stream encoded with a variable length code is output, a stream containing a syntax error and a format violation is prevented from being output.A checker checks encoding parameter for a stream that is reproduced from a magnetic tape and a stream that is output through an EE path and determines an occurrence of a syntax error or a format violation. When the output stream contains it, a switch circuit stops outputting the stream in the unit of a GOP or a picture and adds a code representing the end to the immediately preceding stream. The checker continuously checks the stream. When the output stream does not contain an error, etc, the output of the stream is resumed from the beginning of a GOP. At that point, flag representing that there is a picture that has not been used due to the stop of the stream is added.

摘要翻译： 当输出用可变长度代码编码的流时，阻止包含语法错误和格式违例的流被输出。 检查器检查从磁带再现的流的编码参数和通过EE路径输出的流，并确定语法错误或格式违规的发生。 当输出流包含它时，开关电路停止以GOP或图像为单位输出流，并将代表结束的代码添加到紧接在前的流。 检查器不断检查流。 当输出流不包含错误等时，从GOP的开始恢复流的输出。 此时，表示存在由于流停止而没有使用的图片的标志。

公开(公告)号：US20060239636A1

公开(公告)日：2006-10-26

申请号：US11473501

申请日：2006-06-23

申请人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H04N9/00

CPC分类号： H04N21/236 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8047 ,  H04N9/888 ,  H04N19/186 ,  H04N21/434

摘要： MPEG streams of different chroma formats are recorded and reproduced without need to recognize their formats. In an MPEG stream, a header is followed by DCT blocks. Time slots are generated in such a manner that when the chroma format detected from the header is 4:2:2, in all periods of DCT blocks, a process is performed and that when the chroma format detected from the header is 4:2:0, a process is not performed in periods for DCT blocks Cb2 and Cr2 that are not present in the chroma format 4:2:2. The read order of a stream is changed in a memory so as to improve an error resistance. DCT coefficients are rearranged in the order of DC components and AC components from the lowest order component to the highest order component over all DCT blocks. After the stream has been rearranged, time slots are generated in such as manner that when the chroma format is 4:2:0, the process is stopped in the periods for Cb2 and Cr2. With the time slots, corresponding to the chroma format, the process is controlled so that the chroma formats 4:2:2 and 4:2:0 can be processed in common.

公开(公告)号：US07127156B1

公开(公告)日：2006-10-24

申请号：US09890498

申请日：2000-12-01

申请人： Haruo Togashi ,  Akira Sugiyama ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Haruo Togashi ,  Akira Sugiyama ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H04N7/26

CPC分类号： H04N9/8047 ,  G11B27/032 ,  G11B27/036 ,  G11B2220/90 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/888 ,  H04N19/00 ,  H04N19/107 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70 ,  H04N21/236 ,  H04N21/434

摘要： The header of the sequence layer of an input sequence is written to a RAM. Information of a typical header is pre-stored to a ROM. The selecting operation of a selector is controlled by an output of a detecting portion. When the input sequence contains the header of the sequence layer, the selector selects as an output stream the stream of which the header has been added to each frame. In contrast, when the stream does not contain the header, the header stored in the RAM or the ROM is added to each frame of the stream. In this case, the header stored in the RAM is added to each frame with higher priority than the header stored in the ROM. The header has been always added to each frame of a stream that is output from the selector.

摘要翻译： 将输入序列的序列层的标题写入RAM。 将典型报头的信息预先存储到ROM中。 选择器的选择操作由检测部分的输出控制。 当输入序列包含序列层的标题时，选择器将标题的流添加到每个帧中作为输出流。 相反，当流不包含报头时，存储在RAM或ROM中的报头被添加到流的每个帧。 在这种情况下，存储在RAM中的标题被添加到比存储在ROM中的标题的优先级高的每个帧。 标题一直被添加到从选择器输出的流的每个帧。

公开(公告)号：US07035337B2

公开(公告)日：2006-04-25

申请号：US10182157

申请日：2001-11-28

申请人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H04B1/66 ,  H04N11/02 ,  H04N11/04 ,  H04N7/12

CPC分类号： H04N19/89 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

摘要： An apparatus and method for processing a stream compressed and encoded with a variable length code (VLC) in a predetermined unit by detecting an error flag that has been set. The flag corresponds to a position of an error when the error is contained in the stream. Adding information representing an end of the VLC, based on the error flag, to the position corresponding to the error flag in a string of the VLC containing the error flag. Thus, the VLC after the error flag can be discarded. Additionally, an apparatus and method for processing a stream encoded with a VLC by detecting a code symbol that does not match a parameter representing the VLC from the VLC stream. Correcting the stream based on the detected result, and designating the start of the next process after the detected result has been obtained. Thus, even if a stream containing an irregular VLC is input, the apparatus can be operated in a stable mode.

摘要翻译： 一种用于通过检测已经设置的错误标志来处理以预定单元压缩和编码的可变长度码（VLC）的流的装置和方法。 当流中包含错误时，该标志对应于错误的位置。 将表示VLC的结束的信息基于错误标志添加到包含错误标志的VLC的字符串中与错误标志相对应的位置。 因此，错误标志后的VLC可以被丢弃。 另外，一种用于通过从VLC流检测与表示VLC的参数不匹配的代码符号来处理用VLC编码的流的装置和方法。 基于检测结果校正流，并且在获得检测结果之后指定下一个处理的开始。 因此，即使输入了包含不规则VLC的流，也可以以稳定的方式操作装置。

公开(公告)号：US07536080B2

公开(公告)日：2009-05-19

申请号：US10209426

申请日：2002-07-31

申请人： Shin Todo ,  Yoshinori Suzuki ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

发明人： Shin Todo ,  Yoshinori Suzuki ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

IPC分类号： H04N5/91 ,  H04N7/64

CPC分类号： H04N21/23602 ,  H04N9/8715 ,  H04N9/888 ,  H04N19/70 ,  H04N19/89 ,  H04N21/4135 ,  H04N21/4325 ,  H04N21/4334 ,  H04N21/4342 ,  H04N21/4385

摘要： A signal processing apparatus that enables while a significant video signal is not being output, a stream that is decoded to a black picture signal is output along with a base band signal that causes a block picture to be displayed. The signal is reproduced, as an MPEG stream. The MPEG stream is input to a first input terminal of a switch. The MPEG stream is supplied to a black stream generating circuit. A non-signal detector detects a non-signal state of the stream. In a non-signal period, a second input terminal of the switch is selected. A stream generator generates a black stream that causes a black screen to be displayed, which is input to the second input terminal of the switch, and is obtained from a stream output terminal through a switch.

摘要翻译： 一种信号处理装置，其能够在不输出有效视频信号的同时，将解码为黑色图像信号的流与基带信号一起输出，该基带信号使得块图像被显示。 该信号被再现为MPEG流。 MPEG流被输入到交换机的第一输入端。 MPEG流被提供给黑流生成电路。 非信号检测器检测流的非信号状态。 在非信号周期中，选择开关的第二输入端。 流生成器生成黑色流，其显示黑屏，其被输入到交换机的第二输入端，并且通过开关从流输出端获得。

公开(公告)号：US07228063B2

公开(公告)日：2007-06-05

申请号：US09890497

申请日：2000-12-01

申请人： Haruo Togashi ,  Akira Sugiyama ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Haruo Togashi ,  Akira Sugiyama ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H04N7/26 ,  H04N5/91

CPC分类号： H04N21/236 ,  H04N5/783 ,  H04N9/7921 ,  H04N9/8042 ,  H04N19/34 ,  H04N19/46 ,  H04N21/23602 ,  H04N21/434 ,  H04N21/4342

摘要： A selector has both a function for creating a header of a sequence layer and a header of a picture layer corresponding to reproduced data of a system area and a function for outputting one of an input stream and a stream of which a created header has been added to the header of the input stream as an output stream. When the mode is not high speed reproducing mode, the selector outputs the header contained in the input stream as a header of the output stream. When the mode is high speed reproducing mode, a header (the header of the sequence layer and the header of the picture layer) is created corresponding to data reproduced from the system area. The selector outputs an output stream of which the created header has been added to the input stream.

摘要翻译： 选择器具有用于创建序列层的标题和对应于系统区的再现数据的图像层的标题的功能，以及用于输出已经添加了创建的标题的输入流和流的功能的功能 作为输出流的输入流的标题。 当模式不是高速再现模式时，选择器输出包含在输入流中的标题作为输出流的标题。 当模式是高速再现模式时，对应于从系统区域再现的数据创建标题（序列层的标题和图像层的标题）。 选择器输出已经将创建的标题添加到输入流的输出流。

公开(公告)号：US07072568B2

公开(公告)日：2006-07-04

申请号：US09937871

申请日：2001-02-01

申请人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

发明人： Akira Sugiyama ,  Haruo Togashi ,  Shin Todo ,  Hideyuki Matsumoto

IPC分类号： H04N11/02 ,  H04N9/00

CPC分类号： H04N21/236 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8047 ,  H04N9/888 ,  H04N19/186 ,  H04N21/434

摘要： MPEG streams of different chroma formats are recorded and reproduced without need to recognize their formats. In an MPEG stream, a header is followed by DCT blocks. Time slots are generated in such a manner that when the chroma format detected from the header is 4:2:2, in all periods of DCT blocks, a process is performed and that when the chroma format detected from the header is 4:2:0, a process is not performed in periods for DCT blocks Cb2 and Cr2 that are not present in the chroma format 4:2:2. The read order of a stream is changed in a memory so as to improve an error resistance. DCT coefficients are rearranged in the order of DC components and AC components from the lowest order component to the highest order component over all DCT blocks. After the stream has been rearranged, time slots are generated in such as manner that when the chroma format is 4:2:0, the process is stopped in the periods for Cb2 and Cr2. With the time slots, corresponding to the chroma format, the process is controlled so that the chroma formats 4:2:2 and 4:2:0 can be processed in common.

摘要翻译： 记录和再现不同色度格式的MPEG流，而不需要识别它们的格式。 在MPEG流中，标题之后是DCT块。 以这样的方式生成时隙，即当从标题检测到的色度格式为4：2：2时，在DCT块的所有时段中，执行处理，当从标题检测到的色度格式为4:2时， 0，在色差格式4：2：2中不存在的DCT块Cb 2和Cr 2 2的周期中不执行处理。 流的读取顺序在存储器中改变，以便提高误差电阻。 DCT系数按照DC分量和AC分量的顺序从所有DCT块中的最低阶分量到最高阶分量的顺​​序重新排列。 在重新排列流之后，以这样一种方式生成时隙，即当色度格式为4:2:0时，处理在Cb <2>和Cr 2 。 利用与色度格式对应的时隙，控制处理，使得可以共同处理色彩格式4：2：2和4：2：0。

公开(公告)号：US06549677B1

公开(公告)日：2003-04-15

申请号：US09283034

申请日：1999-04-01

申请人： Yoshinori Suzuki ,  Shin Todo ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

发明人： Yoshinori Suzuki ,  Shin Todo ,  Haruo Togashi ,  Akira Sugiyama ,  Hideyuki Matsumoto

IPC分类号： G06K936

CPC分类号： H04N19/90 ,  H04N19/115 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/14 ,  H04N19/146 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N19/63 ,  H04N19/91

摘要： Method and apparatus for performing data conversion between first-format encoded data in which orthogonal transform coefficients are arranged in an order of DC components and AC components from a low spatial frequency order to a high spatial frequency order in each orthogonal transform block when compression encoding which includes orthogonal transform is applied to video data and second-format encoded data in which orthogonal transform coefficients are arranged in an order of DC components and AC components from a low spatial frequency order to a high spatial frequency order in each block assembly member formed of a plurality of orthogonal transform blocks when compression encoding which includes orthogonal transform is applied to video data. The second-format encoded data may be decoded to obtain orthogonal transform coefficients which may be re-arranged from a low spatial frequency order to a high spatial frequency order in each orthogonal transform block of the first format. Such orthogonal transform coefficients may be encoded to form encoded data having the first format.

摘要翻译： 在第一格式编码数据中进行数据转换的方法和装置，其中正交变换系数以DC分量和AC分量的顺序从每个正交变换块中的低空间频率顺序排列到高空间频率顺序，当压缩编码 包括正交变换被应用于视频数据和第二格式编码数据，其中正交变换系数按照DC分量和AC分量的顺序从低空间频率级到高空间频率顺序排列在由 当将包括正交变换的压缩编码应用于视频数据时，多个正交变换块。 第二格式编码数据可以被解码以获得可以在第一格式的每个正交变换块中从低空间频率顺序重新排列到高空间频率顺序的正交变换系数。 这样的正交变换系数可以被编码以形成具有第一格式的编码数据。

公开(公告)号：US06516034B2

公开(公告)日：2003-02-04

申请号：US09350226

申请日：1999-07-08

申请人： Shin Todo ,  Haruo Togashi ,  Hideyuki Matsumoto

发明人： Shin Todo ,  Haruo Togashi ,  Hideyuki Matsumoto

IPC分类号： H04N166

CPC分类号： H04N19/00 ,  H03M7/40 ,  H04N19/124 ,  H04N19/132 ,  H04N19/149 ,  H04N19/152 ,  H04N19/162 ,  H04N19/166 ,  H04N19/174 ,  H04N19/176 ,  H04N19/177 ,  H04N19/18 ,  H04N19/40 ,  H04N19/42 ,  H04N19/46 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89 ,  H04N19/91

摘要： A stream processing apparatus and method for replacing a macroblock having a syntax error in an encoded stream with a marcroblock having an acceptable syntax. In such apparatus and method, a plurality of coding parameters may be extracted from the source encoded stream, an error macroblock having a syntax error in the source encoded stream may be detected, the source encoded stream may be variable-length decoded so as to generate a variable-length-decoded stream, a predetermined macroblock having an acceptable syntax may be generated which conforms to a MPEG (motion picture image coding experts group) standard, and the error macroblock of the variable-length decoded stream may be replaced with the predetermined macroblock.

摘要翻译： 一种流处理装置和方法，用于用具有可接受语法的marcroblock替换具有编码流中的语法错误的宏块。 在这种装置和方法中，可以从源编码流中提取多个编码参数，可以检测到源编码流中具有语法错误的误差宏块，源编码流可以是可变长度解码的，以便产生 可以生成符合MPEG（运动图像图像编码专家组）标准的可变长度解码流，具有可接受语法的预定宏块，并且可变长度解码流的误差宏块可以用预定的 宏块。