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公开(公告)号：US20070286423A1
公开(公告)日：2007-12-13
申请号：US11742038
申请日：2007-04-30
申请人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
发明人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
IPC分类号： H04N7/167
CPC分类号： H04N7/1675 , H04N21/2347 , H04N21/26613 , H04N21/4405 , H04N21/4623 , H04N21/835
摘要： Disclosed herein is an information processing system including: a first information processing apparatus for transmitting a content including video and audio signals; and a second information processing apparatus for receiving the content. The first apparatus includes: a first key generator configured to generate a first key; a video encryptor configured to encrypt the video signal with the first key; an audio encryptor configured to encrypt the audio signal with the first key; and a transmitter configured to transmit the content including the encrypted video and audio signals. The second apparatus includes: a receiver configured to receive the content; a second key generator configured to generate a second key corresponding to the first key; a video decryptor configured to decrypt the encrypted video signal with the second key; and an audio decryptor configured to decrypt the encrypted audio signal with the second key.
摘要翻译： 这里公开了一种信息处理系统，包括：第一信息处理装置，用于发送包括视频和音频信号的内容; 以及用于接收内容的第二信息处理装置。 第一装置包括：第一密钥生成器，被配置为生成第一密钥; 配置为利用所述第一密钥加密所述视频信号的视频加密器; 音频加密器，被配置为用所述第一密钥加密所述音频信号; 以及发送器，被配置为发送包括加密的视频和音频信号的内容。 第二装置包括：被配置为接收内容的接收器; 第二密钥生成器，被配置为生成与所述第一密钥对应的第二密钥; 视频解密器，被配置为用所述第二密钥解密所述加密的视频信号; 以及音频解码器，被配置为用所述第二密钥解密所述加密音频信号。
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公开(公告)号：US07853802B2
公开(公告)日：2010-12-14
申请号：US11742038
申请日：2007-04-30
申请人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
发明人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
CPC分类号： H04N7/1675 , H04N21/2347 , H04N21/26613 , H04N21/4405 , H04N21/4623 , H04N21/835
摘要： Disclosed herein is an information processing system including: a first information processing apparatus for transmitting a content including video and audio signals; and a second information processing apparatus for receiving the content. The first apparatus includes: a first key generator configured to generate a first key; a video encryptor configured to encrypt the video signal with the first key; an audio encryptor configured to encrypt the audio signal with the first key; and a transmitter configured to transmit the content including the encrypted video and audio signals. The second apparatus includes: a receiver configured to receive the content; a second key generator configured to generate a second key corresponding to the first key; a video decryptor configured to decrypt the encrypted video signal with the second key; and an audio decryptor configured to decrypt the encrypted audio signal with the second key.
摘要翻译： 这里公开了一种信息处理系统，包括：第一信息处理装置，用于发送包括视频和音频信号的内容; 以及用于接收内容的第二信息处理装置。 第一装置包括：第一密钥生成器，被配置为生成第一密钥; 配置为利用所述第一密钥加密所述视频信号的视频加密器; 音频加密器，被配置为用所述第一密钥加密所述音频信号; 以及发送器，被配置为发送包括加密的视频和音频信号的内容。 第二装置包括：被配置为接收内容的接收器; 第二密钥生成器，被配置为生成与所述第一密钥对应的第二密钥; 视频解密器，被配置为用所述第二密钥解密所述加密的视频信号; 以及音频解码器，被配置为用所述第二密钥解密所述加密音频信号。
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公开(公告)号：US5974225A
公开(公告)日：1999-10-26
申请号：US109773
申请日：1998-07-02
IPC分类号： G11B20/12 , G11B27/032 , G11B27/036 , G11B27/30 , H04N5/7826 , H04N9/804 , H04N9/806 , H04N9/877 , H04N5/917 , H04N7/26
CPC分类号： H04N9/8042 , G11B20/1208 , G11B27/036 , G11B27/3027 , G11B2020/10592 , G11B2220/90 , G11B27/032 , H04N5/78266 , H04N9/8063 , H04N9/877
摘要： A video data recording apparatus which divides video data which has been compressed and encoded in units of groups of pictures (GOPs) comprised of the video data of a predetermined plurality of frames into a plurality of data blocks of a predetermined format, adding a GOP identifying code for identifying a GOP of compressed and encoded video data, recording on a predetermined number of slanted tracks on the tape the plurality of data blocks. Also, a video data reproduction apparatus which reproduces the video data recorded by the video data recording apparatus by simple tracking control.
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公开(公告)号：US5764428A
公开(公告)日：1998-06-09
申请号：US758759
申请日：1996-12-03
申请人： Atsumu Soda
发明人： Atsumu Soda
CPC分类号： G11B5/02 , G11B5/035 , G11B15/1875 , G11B15/54
摘要： An audio signal reproducing apparatus which can remove, upon variable speed reproduction, only noise such as noise caused by a bias frequency without sacrificing sound is disclosed. An audio signal recorded on a magnetic tape is reproduced by a magnetic head, amplified by an amplifier and supplied to a voltage controlled filter. Meanwhile, the feeding speed of the magnetic tape is detected by a tape speed detector and converted into a corresponding voltage by a tape speed to voltage converter, and the voltage is further converted into a control voltage by a control voltage generation circuit. The control voltage is supplied to the voltage controlled filter so that the cutoff frequency of the filter is varied in accordance with the control voltage. The cutoff frequency decreases as the feeding speed of the magnetic tape decreases. Signals of frequencies of the audio signal inputted to the filter which are lower than the cutoff frequency are maintained while noise components including a signal of a bias frequency are cut by the filter.
摘要翻译： 公开了一种音频信号再现装置，其可以在可变速度再现时除去噪声，例如由偏置频率引起的噪声而不牺牲声音。 记录在磁带上的音频信号由磁头再现，由放大器放大并提供给压控滤波器。 同时，磁带的馈送速度由带速检测器检测，并通过带速转换电压转换成相应的电压，并通过控制电压产生电路将电压进一步转换为控制电压。 控制电压被提供给压控滤波器，使得滤波器的截止频率根据控制电压而变化。 当磁带的进给速度降低时，截止频率降低。 保持输入到滤波器的音频信号的频率低于截止频率的信号，并且包括偏置频率的信号的噪声分量被滤波器切断。
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公开(公告)号：US20070263867A1
公开(公告)日：2007-11-15
申请号：US11738669
申请日：2007-04-23
申请人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
发明人： Atsumu Soda , Takayuki Takeda , Ichiro Munakata
IPC分类号： H04N7/167
CPC分类号： H04N7/1675 , H04N21/233 , H04N21/23476 , H04N21/2351 , H04N21/26613 , H04N21/439 , H04N21/4405 , H04N21/84
摘要： Disclosed herein is an information processing system including: a first information processing apparatus for transmitting an audio signal in accordance with SMPTE 299M using HD-SDI standardized in SMPTE 292M; and a second information processing apparatus for receiving the signal. The first apparatus includes: a first key generator; an audio encryptor configured to perform an encryption process; an encryption On/Off decider configured to decide which part of the signal is to be encrypted and which part is not, and accordingly control the encryption process; and a transmitter configured to transmit the encrypted signal. The second apparatus includes: a receiver configured to receive the encrypted signal; a second key generator; an audio decryptor configured to perform a decryption process; and an encryption On/Off determiner configured to determine which part of the encrypted signal has been encrypted and which part has not, and accordingly control the decryption process.
摘要翻译： 这里公开了一种信息处理系统，包括：第一信息处理装置，用于使用在SMPTE 292M中标准化的HD-SDI，根据SMPTE 299M发送音频信号; 以及用于接收信号的第二信息处理装置。 第一装置包括：第一密钥发生器; 被配置为执行加密处理的音频加密器; 加密开/关判定器，被配置为确定信号的哪个部分被加密，哪个部分不被加密，并且因此控制加密过程; 以及被配置为发送加密信号的发射机。 第二装置包括：被配置为接收加密信号的接收机; 第二个键发生器; 配置为执行解密处理的音频解码器; 以及加密开/关确定器，被配置为确定加密信号的哪个部分已经被加密，哪个部分没有被加密，并因此控制解密过程。
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公开(公告)号：US20070113084A1
公开(公告)日：2007-05-17
申请号：US11459804
申请日：2006-07-25
申请人： Atsumu SODA
发明人： Atsumu SODA
IPC分类号： H04L9/00
CPC分类号： H04L9/0891
摘要： An information processing apparatus decrypts, using meta data, encrypted data obtained by encrypting stream data including successive frames according to an encryption method in which, when the stream data is sequentially encrypted on a frame-by-frame basis, a key used for encrypting each frame is updated according to a predetermined rule. The meta data includes the plurality of keys used for encrypting the stream data and update information for identifying update timings of the keys. The apparatus includes a decrypter for acquiring the encrypted data and decrypting each frame using the key used for encrypting the frame and a meta data acquirer for acquiring the meta data and delivering one of the keys corresponding to the frame to the decrypter in accordance with the update information. The meta data acquirer includes a corrector for detecting an error in the update information and correcting the update information if an error has occurred.
摘要翻译： 信息处理装置使用元数据解密通过根据加密方法加密包含连续帧的流数据而获得的加密数据，其中当流数据逐帧依次加密时，用于加密每个 帧根据预定规则被更新。 元数据包括用于加密流数据的多个密钥和用于识别密钥的更新定时的更新信息。 该装置包括用于获取加密数据并使用用于加密帧的密钥解密每个帧的解密器，以及用于获取元数据的元数据获取器，并且根据该更新将与帧对应的一个密钥递送给解密器 信息。 元数据获取器包括用于检测更新信息中的错误并且如果发生错误则校正更新信息的校正器。
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7.发明授权Video data recording/reproducing system, audio/video data recording/reproducing device, its system, and data reproducing device 失效视频数据记录/再现系统，音频/视频数据记录/再现装置，其系统和数据再现装置公开(公告)号：US06611652B1
公开(公告)日：2003-08-26
申请号：US08860537
申请日：1997-10-31
申请人： Tetsuya Iwamoto , Yoshinori Suzuki , Hiroshi Inamura , Atsumu Soda , Tatsuji Yamazaki , Junichi Ogikubo , Soichiro Niho , Nirokazu Ito , Hiroyuki Fujita , Yuichi Kojima
发明人： Tetsuya Iwamoto , Yoshinori Suzuki , Hiroshi Inamura , Atsumu Soda , Tatsuji Yamazaki , Junichi Ogikubo , Soichiro Niho , Nirokazu Ito , Hiroyuki Fujita , Yuichi Kojima
IPC分类号： H04N576
CPC分类号： H04N9/8042 , G11B5/0086 , G11B15/026 , G11B15/125 , G11B15/1875 , G11B15/4671 , G11B20/1208 , G11B27/005 , G11B27/031 , G11B27/032 , G11B27/10 , G11B27/3027 , G11B2020/10833 , G11B2220/90 , H04N5/222 , H04N5/765 , H04N5/783 , H04N5/945 , H04N9/797 , H04N9/885
摘要： An AV data input/output controlling circuit is connected through a data bus to a synchronous-asynchronous conversion circuit and through a control bus to a recording and reproduction controlling circuit. The AV data input/output controlling circuit inputs and outputs audio and/or video data of a normal data rate. The AV data input/output controlling circuit also inputs and outputs audio and/or video data of a higher data rate than usual. In the data recording and reproducing apparatus, audio and/or video data is transferred through a data bus synchronized with a reference synchronization signal S28 etc., the audio and/or video data input from an external unit is recorded in a storage device, and the audio and/or video data recorded in the storage device is reproduced and supplied to the outside.
摘要翻译： AV数据输入/输出控制电路通过数据总线连接到同步异步转换电路，并通过控制总线连接到记录和再现控制电路。 AV数据输入/输出控制电路输入和输出正常数据速率的音频和/或视频数据。 AV数据输入/输出控制电路还输入和输出比平常更高数据速率的音频和/或视频数据。 在数据记录和再现装置中，通过与参考同步信号S28等同步的数据总线传送音频和/或视频数据，将从外部单元输入的音频和/或视频数据记录在存储装置中， 记录在存储装置中的音频和/或视频数据被再现并提供给外部。
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公开(公告)号：US5857058A
公开(公告)日：1999-01-05
申请号：US659755
申请日：1996-06-06
IPC分类号： G11B27/036 , H04N5/91 , H04N5/917 , H04N9/804
CPC分类号： G11B27/036 , H04N5/91 , H04N5/917 , H04N9/804
摘要： A video data recording apparatus which divides video data which has been compressed and encoded in units of groups of pictures (GOPs) comprised of the video data of a predetermined plurality of frames into a plurality of data blocks of a predetermined format, adding a GOP identifying code for identifying a GOP of compressed and encoded video data, recording on a predetermined number of slanted tracks on the tape the plurality of data blocks. Also, a video data reproduction apparatus which reproduces the video data recorded by the video data recording apparatus by simple tracking control.
摘要翻译： 一种视频数据记录装置，其将已经以由预定多个帧的视频数据构成的图像组（GOP）的单位压缩和编码的视频数据分割成预定格式的多个数据块，添加GOP识别 用于识别压缩和编码视频数据的GOP的代码，在磁带上的预定数量的倾斜磁道上记录多个数据块。 此外，视频数据再现装置通过简单的跟踪控制再现由视频数据记录装置记录的视频数据。
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公开(公告)号：US07724900B2
公开(公告)日：2010-05-25
申请号：US11495568
申请日：2006-07-31
申请人： Atsumu Soda
发明人： Atsumu Soda
IPC分类号： H04N7/167
CPC分类号： H04L9/065 , H04L9/0891 , H04L2209/12 , H04L2209/24
摘要： An information processing apparatus decrypts stream data encrypted according to a first encryption method using a key encrypted according to a second encryption method. In the apparatus, an update instructing unit identifies the update timings of decryption keys and issues an update command. A decryption key output unit outputs a first decryption key before receiving the update command and outputs a second decryption key generated subsequent to the first decryption key after receiving the update command. An update instruction control unit determines whether the second decryption key has been generated before the first decryption key is updated to the second decryption key. When the second decryption key is generated, the update instruction control unit considers the second key generation point in time to be the update timing from the first decryption key to the second decryption key so as to control the update instructing unit to issue the update command.
摘要翻译： 信息处理装置使用根据第二加密方法加密的密钥来解密根据第一加密方法加密的流数据。 在该装置中，更新指示单元识别解密密钥的更新定时并发出更新命令。 解密密钥输出单元在接收到更新命令之前输出第一解密密钥，并且在接收到更新命令之后输出在第一解密密钥之后生成的第二解密密钥。 更新指示控制单元在第一解密密钥被更新为第二解密密钥之前，确定是否已经生成了第二解密密钥。 当生成第二解密密钥时，更新指令控制单元将第二密钥生成点及时地认为是从第一解密密钥到第二解密密钥的更新定时，以便控制更新指示单元发布更新命令。
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公开(公告)号：US20070030964A1
公开(公告)日：2007-02-08
申请号：US11495568
申请日：2006-07-31
申请人： Atsumu Soda
发明人： Atsumu Soda
IPC分类号： H04L9/00
CPC分类号： H04L9/065 , H04L9/0891 , H04L2209/12 , H04L2209/24
摘要： An information processing apparatus decrypts stream data encrypted according to a first encryption method using a key encrypted according to a second encryption method. In the apparatus, an update instructing unit identifies the update timings of decryption keys and issues an update command. A decryption key output unit outputs a first decryption key before receiving the update command and outputs a second decryption key generated subsequent to the first decryption key after receiving the update command. An update instruction control unit determines whether the second decryption key has been generated before the first decryption key is updated to the second decryption key. When the second decryption key is generated, the update instruction control unit considers the second key generation point in time to be the update timing from the first decryption key to the second decryption key so as to control the update instructing unit to issue the update command.
摘要翻译： 信息处理装置使用根据第二加密方法加密的密钥来解密根据第一加密方法加密的流数据。 在该装置中，更新指示单元识别解密密钥的更新定时并发出更新命令。 解密密钥输出单元在接收到更新命令之前输出第一解密密钥，并且在接收到更新命令之后输出在第一解密密钥之后生成的第二解密密钥。 更新指示控制单元在第一解密密钥被更新为第二解密密钥之前，确定是否已经生成了第二解密密钥。 当生成第二解密密钥时，更新指令控制单元将第二密钥生成点及时地认为是从第一解密密钥到第二解密密钥的更新定时，以便控制更新指示单元发布更新命令。
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