公开(公告)号：US4965867A

公开(公告)日：1990-10-23

申请号：US234874

申请日：1988-08-22

申请人： Masami Tsuchida ,  Ichiro Miyake ,  Tokihiro Takahashi ,  Shinichi Wakumura ,  Yoshimi Iso ,  Takao Arai ,  Hiroo Okamoto

发明人： Masami Tsuchida ,  Ichiro Miyake ,  Tokihiro Takahashi ,  Shinichi Wakumura ,  Yoshimi Iso ,  Takao Arai ,  Hiroo Okamoto

IPC分类号： H03M1/02 ,  H03M1/06 ,  H03M1/10 ,  H04L25/06

CPC分类号： H03M1/1023 ,  H03M1/0607 ,  H04L25/067 ,  H03M1/02

摘要： An offset compensation circuit for compensating a DC offset which occurs in a circuit line including an A/D converter or an A/D and D/A converter in which not only the polarity bit of digital data but also information concerning the amplitude of an analog input signal are applied to an integrator to precisely compensate an offset voltage in a circuit line. The level of a proper offset compensation voltage is provided even when an input analog signal such as a music signal is absent, and when an A/D and D/A converter is provided which can perform both A/D conversion and D/A conversion the DC offset can be precisely compensated shortly after the change of the mode from D/A conversion to A/D conversion.

摘要翻译： 一种偏移补偿电路，用于补偿在包括A / D转换器或A / D和D / A转换器的电路线中发生的DC偏移，其中不仅数字数据的极性位，而且还涉及与模拟 输入信号被施加到积分器以精确地补偿电路线路中的偏移电压。 即使没有诸如音乐信号的输入模拟信号，并且当提供可以执行A / D转换和D / A转换的A / D和D / A转换器时，也提供适当的偏移补偿电压的电平 在将模式从D / A转换改变为A / D转换之后，DC偏移可以很快精确地补偿。

公开(公告)号：US4704640A

公开(公告)日：1987-11-03

申请号：US787447

申请日：1985-10-15

申请人： Hiroo Okamoto ,  Masaharu Kobayashi

发明人： Hiroo Okamoto ,  Masaharu Kobayashi

IPC分类号： G11B20/12 ,  G11B5/00 ,  G11B5/008 ,  G11B20/08 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B5/09 ,  H03M13/00

CPC分类号： G11B5/0086 ,  G11B20/10527 ,  G11B20/1426 ,  G11B20/1809

摘要： In PCM signal recording method and apparatus using rotary heads for converting two channels of autio PCM signals each consisting of 12-bit words to a data consisting of 8-bit words and recording the converted data, there is provided means for converting the PCM signals to two data each consisting of eight high order bits of each of two words of the PCM signals, and an 8-bit data consisting of the remaining four low order bits of the respective words. The converted PCM data are recorded on a record tape in a format such that PCM signals having i words/channel which are to be recorded on first and second tracks are divided into a first half and a second half, even data in the first half and odd data in the second half constitute the data to be recorded on the first track, and odd data in the first half and even data in the second half constitute the data to be recorded on the second track.

摘要翻译： 在使用旋转磁头的PCM信号记录方法和装置中，用于将由12位字组成的两个通道的PCM信号转换为由8位字组成的数据并记录转换的数据，提供了将PCM信号转换为 每个由PCM信号的两个字中的每一个的8个高位构成的两个数据以及由各个字的剩余4个低位组成的8位数据。 经转换的PCM数据以记录在第一和第二磁道上的具有i个字/频道的PCM信号被划分为前半部分和第二半部分的偶数数据的格式被记录在记录磁带上，并且 第二半帧中的奇数数据构成要记录在第一磁道上的数据，上半部分的奇数数据和后半部分的偶数数据构成要记录在第二磁道上的数据。

公开(公告)号：US4646301A

公开(公告)日：1987-02-24

申请号：US665378

申请日：1984-10-26

申请人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Hiroyuki Kimura ,  Takaharu Noguchi ,  Takao Arai

发明人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Hiroyuki Kimura ,  Takaharu Noguchi ,  Takao Arai

IPC分类号： H04L1/00 ,  G06F11/10 ,  G11B20/18 ,  H03M13/00 ,  H03M13/27 ,  H03M13/29

CPC分类号： G11B20/1809 ,  G06F11/10 ,  H03M13/29

摘要： Error correction of digital signals is suited for codes having error detection and correction words, such as doubly-encoded Reed-Solomon code. In a first decoding, at least error detection is effected and flags indicating decoding conditions are added. In a second decoding, error detection for first code blocks and error correction for S2 words at unknown locations and E flagged word erasures, where d1 is a Hamming distance and S2 and E satisfy a relation of 2S2+E.ltoreq.d1-1, are parallely or sequentially effected, and a combination of S2 and E having a high correction capability and a low probability of miscorrection is selected from a plurality of correction results of error locations and the numbers of flags added at the first decoding, and the word errors are corrected based on the selected combination.

摘要翻译： 数字信号的纠错适用于具有错误检测和纠错字的代码，例如双重编码的里德 - 所罗门码。 在第一解码中，至少进行错误检测，并且添加指示解码条件的标志。 在第二解码中，用于第一代码块的错误检测和未知位置处的S2字的错误检测和E标记的字擦除，其中d1是汉明距离，S2和E满足2S2 + E 的关系， 平行或顺序地实现，并且从错误位置的多个校正结果和在第一次解码时添加的标志数量，选择具有高校正能力和低错误概率的S2和E的组合，并且单词错误 根据所选择的组合进行校正。

公开(公告)号：US4646170A

公开(公告)日：1987-02-24

申请号：US757448

申请日：1985-07-22

申请人： Masaharu Kobayashi ,  Hiroo Okamoto ,  Takao Arai

发明人： Masaharu Kobayashi ,  Hiroo Okamoto ,  Takao Arai

IPC分类号： G11B20/12 ,  G11B5/09 ,  G11B20/18 ,  G11B5/02 ,  G06F11/10

CPC分类号： G11B20/1809

摘要： In a stationary head type PCM recorder having an A/D converter for sampling an analog signal and converting the analog signal to a digital signal, a signal processing circuit including data delay means for adding an error detection and correction code and a predetermined signal to the digital signal for each error correction group of a predetermined number of samples, and a multi-track head for recording an output of the signal processing circuit on a plurality of tracks of a magnetic record medium and reproducing the signals recorded on the magnetic record medium; incorrectability of the error detection and correction code for a burst error in the output analog signal due to a burst error in the reproduced output is reduced by delaying parity data by the error detection and correction code and the digital signal data by different delay times such that the digital signal data are dispersely recorded in a track direction and a tape transport direction, and allotting the delayed data to the multi-track head such that the data of the adjacent sample points are spaced from each other by at least the distribution length of the parity data and the parity data is arranged between the distributed adjacent data.

摘要翻译： 在具有用于对模拟信号进行采样并将模拟信号转换为数字信号的A / D转换器的静态磁头型PCM记录器中，包括数据延迟装置的信号处理电路，用于将误差检测和校正码以及预定信号加到 数字信号，以及用于在磁记录介质的多个轨道上记录信号处理电路的输出并再现记录在磁记录介质上的信号的多轨头; 由于错误检测和校正码以及数字信号数据通过不同的延迟时间来延迟奇偶校验数据，所以减少了由于再现输出中的脉冲串错误导致的输出模拟信号中的脉冲串错误的错误检测和校正码的不正确性， 数字信号数据被分散地记录在轨道方向和磁带传输方向上，并且将延迟的数据分配给多磁道磁头，使得相邻采样点的数据彼此间隔至少为 奇偶校验数据和奇偶校验数据被布置在分布的相邻数据之间。

公开(公告)号：US4590524A

公开(公告)日：1986-05-20

申请号：US553234

申请日：1983-11-18

申请人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Takashi Hoshino ,  Masami Nishida

发明人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Takashi Hoshino ,  Masami Nishida

IPC分类号： G11B5/035 ,  G11B20/10 ,  G11B15/14 ,  G11B5/00

CPC分类号： G11B20/10527 ,  G11B5/035

摘要： A multitrack PCM reproducing apparatus for reproducing PCM signals recorded on a plurality of tracks in a distributed relation, comprises a signal selector circuit sequentially selecting the PCM signals reproduced from the individual tracks, an A/D converter converting the reproduced signals selected by the signal selector circuit into digital signals, a memory circuit storing the digital signals obtained by the A/D conversion, a single digital filter equalizing for each track the waveform of the digital signals stored in the memory circuit, and a signal processor circuit demodulating the PCM signals on the basis of the digital signals processed by the digital filter.

摘要翻译： 一种用于再现以分布式关系记录在多个磁道上的PCM信号的多轨PCM再现装置，包括顺序地选择从各个磁道再现的PCM信号的信号选择器电路，A / D转换器转换由信号选择器选择的再现信号 电路转换为数字信号，存储电路，存储通过A / D转换获得的数字信号，对于每个轨道平均存储在存储器电路中的数字信号的波形的单个数字滤波器以及解调PCM信号的信号处理器电路 数字滤波器处理的数字信号的基础。

公开(公告)号：US08925097B2

公开(公告)日：2014-12-30

申请号：US12746876

申请日：2009-02-16

申请人： Chiyo Ohno ,  Hiroo Okamoto

发明人： Chiyo Ohno ,  Hiroo Okamoto

IPC分类号： G06F7/04 ,  H04L29/06 ,  H04N21/436 ,  H04N21/258 ,  H04N21/41 ,  H04L9/08 ,  H04N7/173 ,  H04N21/432 ,  H04L9/32 ,  H04N21/475 ,  H04N21/6334 ,  H04N21/4227 ,  H04N7/16

摘要： A content reception equipment for accessing an in-home content transmission equipment from a remote place executes a first authentication process with the content transmission equipment in advance, executes the remote access information sharing process required for access from a remote place, and causes the information on the content reception equipment and the remote access information to be registered in an equipment information table of the content transmission equipment.In the case where the in-home content transmission equipment is accessed by the content reception equipment brought out of home, the content transmission equipment transmits the content to the content reception equipment only in the case where the information on the content reception equipment is registered in the device information table of the content transmission equipment and the second authentication process using the remote access information is successfully executed between the content transmission equipment and the content reception equipment.

公开(公告)号：US08606078B2

公开(公告)日：2013-12-10

申请号：US11874277

申请日：2007-10-18

申请人： Junji Shiokawa ,  Hiroo Okamoto ,  Mitsunobu Watanabe

发明人： Junji Shiokawa ,  Hiroo Okamoto ,  Mitsunobu Watanabe

IPC分类号： H04N5/94

CPC分类号： G11B27/329 ,  G11B27/034 ,  G11B2220/216 ,  G11B2220/2537

摘要： When recording an AV stream, and carrying out a playlist editing, to carry out the editing with an accuracy of a frame unit.An editing point of a recorded AV stream file is configured with a position of a GOP and a frame quantity of the GOP, and recorded as a management file.

摘要翻译： 当记录AV流并进行播放列表编辑时，以帧单位的精度进行编辑。 记录的AV流文件的编辑点被配置有GOP的位置和GOP的帧量，并被记录为管理文件。

公开(公告)号：US08340501B2

公开(公告)日：2012-12-25

申请号：US12219250

申请日：2008-07-18

申请人： Hiroo Okamoto ,  Kyoichi Hosokawa ,  Hitoaki Owashi ,  Hiroaki Tachibana ,  Takaharu Noguchi

发明人： Hiroo Okamoto ,  Kyoichi Hosokawa ,  Hitoaki Owashi ,  Hiroaki Tachibana ,  Takaharu Noguchi

IPC分类号： H04N9/88

CPC分类号： H04N7/173 ,  G11B15/087 ,  G11B15/4731 ,  G11B15/52 ,  G11B20/1211 ,  G11B20/1813 ,  G11B27/005 ,  G11B27/032 ,  G11B27/3027 ,  G11B27/3036 ,  G11B27/3063 ,  G11B2220/90 ,  G11B2220/91 ,  H04B7/18523 ,  H04L12/64 ,  H04N5/775 ,  H04N7/106 ,  H04N7/1675 ,  H04N9/7921 ,  H04N9/8042 ,  H04N9/8233 ,  H04N9/877 ,  H04N21/4325 ,  H04N21/4334 ,  H04N2005/91321

摘要： A video signal input-output circuit and a recording-reproduction apparatus in which a digitally compressed video signal input in packet form can be recorded and reproduced efficiently and in stable fashion. In this apparatus, a clock reference is detected from a packet signal containing the clock reference and a digitally compressed video signal, a time stamp for a packet is generated using a clock signal in phase with the clock reference and added to the particular packet, and the packet signals with the time stamp added thereto are recorded closely to each other in a data storage element such as a magnetic recording medium. At playback, the packet interval is output by being restored to the original length on the basis of the time stamp added to the packet in store.

公开(公告)号：US08010792B2

公开(公告)日：2011-08-30

申请号：US10846558

申请日：2004-05-17

申请人： Mayuko Tanaka ,  Hiroo Okamoto ,  Yoshimichi Kudo

发明人： Mayuko Tanaka ,  Hiroo Okamoto ,  Yoshimichi Kudo

IPC分类号： H04L9/32

CPC分类号： H04L9/0841 ,  H04L9/3273 ,  H04L2209/603

摘要： A copyright of a content is protected by preventing creation of illegal copies of the content and the content is prevented from being transmitted beyond a range of personal use in a process to transmit the content through a LAN.Before transmission of a content, a content transmission apparatus and a content reception apparatus perform a determination of authentication information available in a predetermined command accompanying authentication information, or an authentication determination based on a time until reception of a response to a predetermined command request accompanying predetermined authentication information. If the authentication is unsuccessful, the requested content is not transmitted to the content reception apparatus. With such arrangement, it is possible to effectively protect a copyright when a content is transmitted by way of a network.

摘要翻译： 通过防止创建内容的非法拷贝来防止内容的版权，并且在通过LAN发送内容的过程中防止内容被超出个人使用范围的传输。 在发送内容之前，内容发送装置和内容接收装置执行与认证信息相关的预定命令中可用的认证信息的确定，或者基于直到接收到对预定命令的预定命令请求的响应为止的时间的认证确定 验证信息。 如果认证不成功，则不向内容接收装置发送所请求的内容。 通过这样的安排，当通过网络发送内容时，可以有效地保护版权。

公开(公告)号：US07711248B2

公开(公告)日：2010-05-04

申请号：US12183623

申请日：2008-07-31

申请人： Naozumi Sugimura ,  Hiroo Okamoto ,  Junji Shiokawa

发明人： Naozumi Sugimura ,  Hiroo Okamoto ,  Junji Shiokawa

IPC分类号： H04N7/52

CPC分类号： H04N9/8205 ,  G11B27/034 ,  G11B27/105 ,  G11B27/329 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2562 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N9/8211 ,  H04N9/8227

摘要： A technique is provided for reproducing information from a recording medium, on which there are recorded a plurality of picture information sets; presentation time values, each associated with a corresponding one of the picture information sets; picture information record marks, each of which is associated with a corresponding one of the presentation time values; clip information specifying what position on the recording medium is associated with each of the presentation time values; and reproducing order specifying information which specifies in what order the picture information sets are to be reproduced. Picture information is reproduced through the steps of detecting the presentation time value of a picture information set to be retrieved from the corresponding picture information record mark; using said clip information to detect the recording position on the recording medium which corresponds to the detected presentation time value; and reproducing picture information from the detected recording position.