专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5504530A Apparatus and method for coding and decoding image signals 失效
标题翻译：图像信号编码和解码的装置和方法
公开(公告)号：US5504530A
公开(公告)日：1996-04-02
申请号：US83057
申请日：1993-06-25
申请人： Nobuhisa Obikane , Katsumi Tahara , Yoichi Yagasaki , Jun Yonemitsu , Teruhiko Suzuki
发明人： Nobuhisa Obikane , Katsumi Tahara , Yoichi Yagasaki , Jun Yonemitsu , Teruhiko Suzuki
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H04N7/36 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/107 , H04N19/112 , H04N19/122 , H04N19/124 , H04N19/132 , H04N19/137 , H04N19/152 , H04N19/174 , H04N19/176 , H04N19/18 , H04N19/46 , H04N19/59 , H04N19/61
摘要： A compression-coded high definition television signal is decoded and converted to a standard NTSC signal without loss of interlacing so that the resulting picture exhibits smooth motion. The compression-coding of the HDTV signal includes DCT processing to produce an 8.times.8 block of coefficient data. Upon decoding, the upper left quadrant of the coefficient data array is used to form a 4.times.4 subblock of coefficient data but the last row of elements of the subblock is replaced by corresponding elements of the eighth row of the 8.times.8 block of coefficient data.
摘要翻译：压缩编码的高分辨率电视信号被解码并转换成标准NTSC信号，而不会失去隔行扫描，使得所得到的图像呈现平滑的运动。 HDTV信号的压缩编码包括产生8×8系数数据块的DCT处理。在解码时，系数数据阵列的左上象限用于形成系数数据的4×4子块，但子块的最后一行元素由系数数据的8×8块的第8行的相应元素代替。

2. 发明授权

US5805225A Method and apparatus for variable resolution video picture coding/decoding 失效
标题翻译：用于可变分辨率视频图像编码/解码的方法和装置
公开(公告)号：US5805225A
公开(公告)日：1998-09-08
申请号：US706957
申请日：1996-09-03
申请人： Katsumi Tahara , Yoichi Yagasaki , Jun Yonemitsu
发明人： Katsumi Tahara , Yoichi Yagasaki , Jun Yonemitsu
IPC分类号： G06T9/00 , H04N7/26 , H04N7/46 , H04N7/50 , H04N7/24
CPC分类号： H04N19/577 , H04N19/61 , H04N19/30
摘要： A picture series is encoded so that a first type of decoder having only one frame memory and incapable of bi-directional decoding can decode the encoded bitstream, and a second type of decoder having multiple frame memories and capable of bi-directional decoding can decode the encoded bitstream to produce a higher quality decoded picture series. The encoded bitstream comprises three parallel channels of encoded picture data. The first channel includes every other picture and header information common to the second and third channels. The second channel includes the pictures not represented in the first channel and encoded by one of forward and backward predictive coding. The third channel includes the pictures not represented in the first channel and encoded by bi-directional predictive coding. The first type of decoder uses the first and second channels, while the second type of decoder uses the first and third channels.
摘要翻译：编码图像序列，使得仅具有一个帧存储器并且不能进行双向解码的第一类型的解码器可以对编码的比特流进行解码，并且具有多个帧存储器并且能够进行双向解码的第二类型的解码器可以对编码比特流以产生更高质量的解码图像序列。编码比特流包括编码图像数据的三个并行通道。第一通道包括第二和第三通道共同的其他图像和标题信息。第二信道包括在第一信道中未表示并由前向和后向预测编码之一编码的图像。第三信道包括在第一信道中未表示并由双向预测编码编码的图像。第一类型的解码器使用第一和第二信道，而第二类型的解码器使用第一和第三信道。

3. 发明授权

US5699474A Method and apparatus for decoding MPEG-type data reproduced from a recording medium during a high-speed reproduction operation 失效
标题翻译：用于在高速再现操作期间解码从记录介质再现的MPEG型数据的方法和装置
公开(公告)号：US5699474A
公开(公告)日：1997-12-16
申请号：US397116
申请日：1995-06-19
申请人： Teruhiko Suzuki , Katsumi Tahara , Yoichi Yagasaki , Yasushi Fujinami , Jun Yonemitsu
发明人： Teruhiko Suzuki , Katsumi Tahara , Yoichi Yagasaki , Yasushi Fujinami , Jun Yonemitsu
IPC分类号： H04N5/781 , H04N5/7826 , H04N5/783 , H04N5/85 , H04N5/926 , H04N9/804 , H04N19/00 , H04N19/102 , H04N19/114 , H04N19/12 , H04N19/126 , H04N19/134 , H04N19/137 , H04N19/139 , H04N19/152 , H04N19/159 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/51 , H04N19/517 , H04N19/577 , H04N19/61 , H04N19/625 , H04N19/65 , H04N19/70 , H04N19/85 , H04N19/89 , H04N19/91 , H04N19/93 , H04N5/92
CPC分类号： H04N5/85 , H04N19/00 , H04N19/174 , H04N19/423 , H04N19/503 , H04N19/587 , H04N19/61 , H04N19/90 , H04N5/783 , H04N5/9261 , H04N5/9262 , H04N5/9267 , H04N19/107 , H04N19/13 , H04N19/60 , H04N19/70 , H04N19/91 , H04N5/781 , H04N5/78263 , H04N9/8045 , H04N9/8047
摘要： Recording unit is operative so that, in the case of carrying out high speed reproduction, switch is switched by high speed reproduction control signal inputted from the external, and a signal read out from the recording unit is inputted to VLD and formatter. High speed reproduction control signal is inputted to recording unit, switch and counter. Recording unit reproduces and outputs predetermined data in accordance with high speed reproduction control signal. At VLD, variable length encoding of MPEG is released, and syntax analysis is carried out. Counter counts the number of frames to be transmitted. Moreover, counter outputs temporal.sub.-- reference in accordance with reproduction speed indicated by high speed reproduction control signal. Header converter rewrites temporal.sub.-- reference in picture header in accordance with temporal.sub.-- reference outputted from counter. From facts as described above, high speed reproduction of moving picture can be made.
摘要翻译： PCT No.PCT / JP94 / 01139S。 371日期：1995年6月19日 102（e）1995年6月19日PCT PCT 1994年7月12日PCT公布。出版物WO95 / 02946 日期1995年1月26日记录单元操作，使得在进行高速再现的情况下，通过从外部输入的高速再现控制信号切换开关，并且从记录单元读出的信号被输入到VLD和格式化高速再现控制信号被输入到记录单元，开关和计数器。记录单元根据高速再现控制信号再现和输出预定数据。在VLD中，MPEG的可变长度编码被释放，并进行语法分析。计数器计数要发送的帧数。此外，根据由高速再现控制信号表示的再现速度，计数器输出时间参考。标题转换器根据从计数器输出的时间参考，重写图片标题中的时间参考。根据如上所述的事实，可以进行运动图像的高速再现。

4. 发明授权

US5543932A Digital video signal recording apparatus and digital video signal reproducing apparatus 失效
标题翻译：数字视频信号记录装置和数字视频信号再现装置
公开(公告)号：US5543932A
公开(公告)日：1996-08-06
申请号：US248176
申请日：1994-05-24
申请人： Ching-Fang Chang , Naofumi Yanagihara , Jun Yonemitsu , Katsumi Tahara , Yoichi Yagasaki , Teruhiko Suzuki
发明人： Ching-Fang Chang , Naofumi Yanagihara , Jun Yonemitsu , Katsumi Tahara , Yoichi Yagasaki , Teruhiko Suzuki
IPC分类号： H04N5/7826 , H04N5/783 , H04N9/804 , H04N9/89 , H04N5/926 , H04N5/937
CPC分类号： H04N9/8042 , H04N5/78266 , H04N5/783 , H04N9/89
摘要： According to the present invention, when an ATV signal is recorded by a digital VCR in the conventional television signal record mode, variable speed reproduction data composed of HP data containing I frame is redundantly recorded in a surplus record area that is formed by the difference between the transmission rate of the ATV signal and the transmission rate of the conventional compressed digital video signal. When variable speed reproduction is performed, the variable speed reproduction data is reproduced.
摘要翻译：根据本发明，当在现有的电视信号记录模式中通过数字VCR记录ATV信号时，由包含I帧的HP数据构成的变速再现数据被冗余地记录在由 ATV信号的传输速率和传统压缩数字视频信号的传输速率。当执行变速再现时，再现变速再现数据。

5. 发明授权

US6041160A Method and apparatus for picture encoding and decoding 失效
标题翻译：图像编码和解码的方法和装置
公开(公告)号：US6041160A
公开(公告)日：2000-03-21
申请号：US879038
申请日：1997-06-19
申请人： Yoichi Yagasaki , Katsumi Tahara
发明人： Yoichi Yagasaki , Katsumi Tahara
IPC分类号： H04N5/92 , G06F21/10 , G06T9/00 , H04N7/167 , H04N7/169 , H04N7/50 , H04N9/804 , H04N19/00 , H04N19/423 , H04N19/46 , H04N19/70 , H04N19/85 , H04N21/4367 , H04N5/91
CPC分类号： H04N9/8042 , H04N19/61
摘要： A picture encoding method in which the picture signal can be scrambled without deteriorating the picture quality of the encoded picture of the MPEG system. A B-picture f the input picture signal is given random offset in the horizontal direction on the slice basis and encoded by an MPEG encoding device. An offset amount is written as a key on the disc along with the encoded data. A decoding device corrects the offset amount in the slice basis using the key of the reproduced signal. The picture signal can be scrambled in this manner without modifying the MPEG system.
摘要翻译：可以对图像信号进行加扰而不恶化MPEG系统的编码图像的图像质量的图像编码方法。输入图像信号的B图像在片基上在水平方向上被赋予随机偏移量，并由MPEG编码装置编码。偏移量与编码数据一起写入盘上的键。解码装置使用再生信号的键来校正切片的偏移量。可以以这种方式对图像信号进行加扰而不修改MPEG系统。

6. 发明授权

US5703859A Digital video copy protection system 失效
标题翻译：数字视频拷贝保护系统
公开(公告)号：US5703859A
公开(公告)日：1997-12-30
申请号：US705306
申请日：1996-08-29
申请人： Katsumi Tahara , Hideki Koyanagi , Yoichi Yagasaki , Yasushi Fujinami
发明人： Katsumi Tahara , Hideki Koyanagi , Yoichi Yagasaki , Yasushi Fujinami
IPC分类号： H04N5/913 , H04N5/926 , H04N7/24 , G11B3/64
CPC分类号： H04N1/32149 , H04N21/2541 , H04N21/4334 , H04N21/4627 , H04N21/835 , H04N21/8355 , H04N21/8358 , H04N5/913 , H04N2005/91321 , H04N2005/91328 , H04N2005/91335 , H04N5/9264
摘要： A formatting apparatus authenticates an information signal prior to mass duplication of the signal by analyzing the signal to detect the presence or absence of a security signal therein, inserting a security signal into the information signal, and recording the modified signal only if no security signal was detected.
摘要翻译：格式化装置通过分析信号来检测信号的大量复制之前对信息信号进行认证，以检测其中是否存在安全信号，将安全信号插入到信息信号中，并且仅在没有安全信号为检测到。

7. 发明授权

US06295407B1 Digital video copy protection system 失效
标题翻译：数字视频拷贝保护系统
公开(公告)号：US06295407B1
公开(公告)日：2001-09-25
申请号：US09630265
申请日：2000-08-01
申请人： Katsumi Tahara , Hideki Koyanagi , Yoichi Yagasaki , Yasushi Fujinami
发明人： Katsumi Tahara , Hideki Koyanagi , Yoichi Yagasaki , Yasushi Fujinami
IPC分类号： H04N5913
CPC分类号： H04N1/32149 , H04N5/913 , H04N5/9264 , H04N21/2541 , H04N21/4334 , H04N21/4627 , H04N21/835 , H04N21/8355 , H04N21/8358 , H04N2005/91321 , H04N2005/91328 , H04N2005/91335
摘要： A formatting apparatus authenticates an information signal prior to mass duplication of the signal by analyzing the signal to detect the presence or absence of a security signal therein, inserting a security signal into the information signal, and recording the modified signal only if no security signal was detected.
摘要翻译：格式化装置通过分析信号来检测信号的大量复制之前对信息信号进行认证，以检测其中是否存在安全信号，将安全信号插入到信息信号中，并且仅在没有安全信号为检测到。

8. 发明授权

US5991499A Data recording apparatus and method for preventing illegal copying 失效
标题翻译：用于防止非法复制的数据记录装置和方法
公开(公告)号：US5991499A
公开(公告)日：1999-11-23
申请号：US697794
申请日：1996-08-30
申请人： Yoichi Yagasaki , Hideki Koyanagi , Katsumi Tahara , Yasushi Fujinami
发明人： Yoichi Yagasaki , Hideki Koyanagi , Katsumi Tahara , Yasushi Fujinami
IPC分类号： H04N5/913 , H04N7/50 , H04N5/91
CPC分类号： H04N19/61 , H04N5/913 , H04N2005/91328
摘要： Unauthorized copying of a digital video program is prevented by designating a first block and a second block of data in a bit stream encoded by a fixed length code. A portion of the first block is selected as key data and inserted into the second block to indicate that the digital video program is a copy and to prevent illegal copying.
摘要翻译：通过指定由固定长度码编码的比特流中的第一块和第二数据块来防止数字视频节目的非授权复制。选择第一块的一部分作为关键数据并插入到第二块中以指示数字视频节目是副本并防止非法复制。

9. 发明授权

US5663763A Picture signal encoding method and apparatus and picture signal decoding method and apparatus 失效
标题翻译：图像信号编码方法及装置及图像信号解码方法及装置
公开(公告)号：US5663763A
公开(公告)日：1997-09-02
申请号：US137257
申请日：1993-10-18
申请人： Yoichi Yagasaki , Tohru Wada , Katsumi Tahara
发明人： Yoichi Yagasaki , Tohru Wada , Katsumi Tahara
IPC分类号： H04N7/26 , H04N7/30 , H04N7/46 , H04N7/50 , H04N7/24
CPC分类号： H04N19/577 , H04N19/112 , H04N19/126 , H04N19/61 , H04N19/85 , H04N19/124 , H04N19/13 , H04N19/60 , H04N19/91
摘要： An encoding and decoding apparatus and method which has the primary benefit over the prior art of not requiring storage of the nonlinear sequence of numbers representative of the quantization characteristics. The hardware required for quantization is reduced and inverse quantization may be achieved using shifting operations and a multiplier of up to half the scale compared to conventional encoding/decoding methods and encoding/decoding apparatus.
摘要翻译：一种编码和解码装置和方法，其具有不需要存储代表量化特性的非线性序列序列的现有技术的主要益处。与传统的编码/解码方法和编码/解码装置相比，减少了量化所需的硬件，并且可以使用移位操作和高达一半的倍数来实现逆量化。

10. 发明授权

US06266482B1 Data recording apparatus and method for preventing illegal copying 有权
标题翻译：用于防止非法复制的数据记录装置和方法
公开(公告)号：US06266482B1
公开(公告)日：2001-07-24
申请号：US09431545
申请日：1999-10-29
申请人： Yoichi Yagasaki , Hideki Koyanagi , Katsumi Tahara , Yasushi Fujinami
发明人： Yoichi Yagasaki , Hideki Koyanagi , Katsumi Tahara , Yasushi Fujinami
IPC分类号： H04N591
CPC分类号： H04N19/61 , H04N5/913 , H04N2005/91328
摘要： Unauthorized copying of a digital video program is prevented by designating a first block and a second block of data in a bit stream encoded by a fixed length code. A portion of the first block is selected as key data and inserted into the second block to indicate that the digital video program is a copy and to prevent illegal copying.
摘要翻译：通过指定由固定长度码编码的比特流中的第一块和第二数据块来防止数字视频节目的非授权复制。选择第一块的一部分作为关键数据并插入到第二块中以指示数字视频节目是副本并防止非法复制。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式