公开(公告)号：US4628373A

公开(公告)日：1986-12-09

申请号：US618554

申请日：1984-06-08

申请人： Hiroaki Takahashi ,  Shigeru Yamazaki ,  Takaharu Noguchi ,  Takao Arai

发明人： Hiroaki Takahashi ,  Shigeru Yamazaki ,  Takaharu Noguchi ,  Takao Arai

IPC分类号： G11B5/52 ,  G11B5/008 ,  G11B5/09 ,  G11B5/86 ,  G11B15/14 ,  G11B20/00 ,  G11B20/10 ,  G11B20/18 ,  G11B27/032 ,  G11B27/036 ,  G11B27/36 ,  G11B15/12 ,  G11B5/00

CPC分类号： G11B20/10527 ,  G11B15/14 ,  G11B20/00007 ,  G11B20/1806 ,  G11B27/032 ,  G11B27/036 ,  G11B5/0086 ,  G11B5/09 ,  G11B5/86 ,  G11B20/1879 ,  G11B2220/913 ,  G11B27/36

摘要： The rotating-head PCM record/reproduce apparatus has record and reproduce heads of which the reproduce heads are disposed to scan the recorded track formed by the record heads with a delay of a rotation angle of 90.degree. thereby reading immediately after recording, and circuits for converting analog signal to digital signal, and for compressing the timebase of the digital signal, the compressed digital signal being supplied to the record heads so that no signal is supplied to the record head while the reproduce heads are reading the recorded signal.

摘要翻译： 旋转头PCM记录/再现装置具有记录和再现头，其中再现头被设置成以90°的旋转角度的延迟扫描由记录头形成的记录轨道，从而在记录之后立即读取电路， 将模拟信号转换为数字信号，并且为了压缩数字信号的时基，压缩的数字信号被提供给记录头，使得在再现头正在读取记录信号时，没有信号被提供给记录头。

公开(公告)号：US06898578B2

公开(公告)日：2005-05-24

申请号：US10210107

申请日：2002-08-02

申请人： Manabu Sasamoto ,  Takaharu Noguchi ,  Makoto Aikawa ,  Shigeru Hirahata

发明人： Manabu Sasamoto ,  Takaharu Noguchi ,  Makoto Aikawa ,  Shigeru Hirahata

IPC分类号： H04N5/91 ,  G06F21/10 ,  G09C1/00 ,  G11B20/00 ,  G11B20/10 ,  H04N5/913 ,  H04N7/167 ,  H04N9/804 ,  H04N21/41 ,  H04N21/8355 ,  H04L9/00 ,  G06F17/60 ,  H04K1/00

CPC分类号： H04N21/4135 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00507 ,  G11B20/00753 ,  G11B20/00768 ,  G11B20/0084 ,  H04N5/913 ,  H04N7/1675 ,  H04N9/804 ,  H04N9/8042 ,  H04N21/8355 ,  H04N2005/91328 ,  H04N2005/91364

摘要： A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.

公开(公告)号：US06807364B2

公开(公告)日：2004-10-19

申请号：US09883175

申请日：2001-06-19

申请人： Nobutaka Amada ,  Takao Arai ,  Takaharu Noguchi ,  Hiroo Okamoto ,  Shigeru Yamazaki

发明人： Nobutaka Amada ,  Takao Arai ,  Takaharu Noguchi ,  Hiroo Okamoto ,  Shigeru Yamazaki

IPC分类号： H04N591

CPC分类号： G11B20/0071 ,  G11B5/00813 ,  G11B15/1875 ,  G11B20/00007 ,  G11B20/00086 ,  G11B20/00188 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00557 ,  G11B20/00695 ,  G11B20/0084 ,  G11B27/3027 ,  G11B27/3036 ,  G11B2220/90 ,  H04N5/765 ,  H04N5/78263 ,  H04N5/919 ,  H04N5/9201 ,  H04N5/9261 ,  H04N5/9265

摘要： A digital information recording-reproducing apparatus for recording and reproducing a digital information signal which includes a recording circuit for recording the digital information signal together with control information, and a reproducing circuit for detecting the recorded control information at a time the recorded digital information signal is to be reproduced, and reproducing the recorded digital information signal only if the detected control information satisfies a predetermined condition.

摘要翻译： 一种用于记录和再现数字信息信号的数字信息记录再现装置，其包括用于与控制信息一起记录数字信息信号的记录电路，以及用于在记录的数字信息信号为时检测记录的控制信息的再现电路 只有当检测到的控制信息满足预定条件时，才能再现所记录的数字信息信号。

公开(公告)号：US4912574A

公开(公告)日：1990-03-27

申请号：US179305

申请日：1988-04-08

申请人： Masaharu Kobayashi ,  Takao Arai ,  Takaharu Noguchi

发明人： Masaharu Kobayashi ,  Takao Arai ,  Takaharu Noguchi

IPC分类号： G11B15/087 ,  G11B15/18 ,  G11B15/48 ,  G11B20/12 ,  G11B20/18 ,  G11B27/032

CPC分类号： G11B20/18 ,  G11B15/087 ,  G11B15/1875 ,  G11B15/48 ,  G11B20/1208 ,  G11B27/032 ,  G11B2220/90 ,  G11B2220/913

摘要： The present invention relates to an apparatus for recording a digitized signal. If a recording apparatus is switched from a recording mode to a non-recording mode and then switched from the non-recording mode to a recording mode, there is produced a portion between two records where the records are not continuous. When such a portion is reproduced, abnormal data come to be reproduced because of existence of discontinuity between the prior and subsequent data. And, if a digital audio signal is similarly recorded, it follows that an abnormal sound is generated when such a portion is reproduced. Then, by recording an anti-format signal in the discontinuous portion, the reproduction of abnormal data or generation of abnormal sound can be prevented from occurring.

摘要翻译： 本发明涉及用于记录数字化信号的装置。 如果记录装置从记录模式切换到非记录模式，然后从非记录模式切换到记录模式，则在记录不连续的两个记录之间产生一部分。 当再现这样的部分时，由于存在先前和后续数据之间的不连续性，异常数据将被再现。 并且，如果数字音频信号被类似地记录，则当再现这样的部分时，产生异常声音。 然后，通过在不连续部分中记录反格式信号，可以防止异常数据的再现或异常声音的产生。

公开(公告)号：US4905104A

公开(公告)日：1990-02-27

申请号：US76604

申请日：1987-07-22

申请人： Hiroo Okamoto ,  Takaharu Noguchi ,  Masaharu Kobayashi ,  Taihei Nakama

发明人： Hiroo Okamoto ,  Takaharu Noguchi ,  Masaharu Kobayashi ,  Taihei Nakama

IPC分类号： G11B5/09 ,  G11B15/12 ,  G11B15/18 ,  G11B15/467 ,  G11B20/10 ,  G11B20/12 ,  G11B27/00

CPC分类号： G11B20/10527 ,  G11B15/125 ,  G11B15/1875 ,  G11B27/005 ,  G11B15/4673 ,  G11B2220/90 ,  G11B2220/913

摘要： A rotary head type digital signal recording and/or reproducing apparatus wherein for 1/2 speed recording and/or reproducing from a magnetic tape, a tape feed speed is decreased to 1/2 times the normal speed, and a recording/reproducing interval becomes 2 times that of the normal mode of operation utilizing at least two rotary heads mounted at adjacent positions on a rotating cylinder with one of the rotary heads having a plus azimuth angle and the other having a minus azimuth angle. For 2 times speed recording/reproducing, a tape feed speed increases to 2 times the normal speed, and a recording/reproducing interval becomes 1/2 that of the normal mode of operation utilizing at least two rotary heads mounted on a rotating cylinder at opposite positions of a rotary axis of the cylinder, with one of the two rotary heads having a plus azimuth angle and the other having a minus azimuth angle.

摘要翻译： 一种旋转磁头式数字信号记录和/或再现装置，其中对于从磁带进行1/2速度记录和/或再现，磁带进给速度降低到正常速度的1/2倍，并且记录/再现间隔变为 使用安装在旋转圆筒上的相邻位置的至少两个旋转头的正常操作模式的2倍，其中一个旋转头具有正方位角，而另一个具有负方位角。 对于2倍速度记录/再现，磁带进给速度增加到正常速度的2倍，并且记录/再现间隔变为使用安装在相反的旋转圆柱体上的至少两个旋转磁头的正常操作模式的记录/再现间隔的1/2 两个旋转头中的一个具有正方位角，另一个具有负方位角。

公开(公告)号：US4758902A

公开(公告)日：1988-07-19

申请号：US886235

申请日：1986-07-16

申请人： Hiroo Okamoto ,  Hiroyuki Kimura ,  Shigeru Yamazaki ,  Takaharu Noguchi ,  Masaharu Kobayashi

发明人： Hiroo Okamoto ,  Hiroyuki Kimura ,  Shigeru Yamazaki ,  Takaharu Noguchi ,  Masaharu Kobayashi

IPC分类号： G11B20/08 ,  G11B5/86 ,  G11B20/10 ,  G11B20/18 ,  G11B5/09

CPC分类号： G11B20/1809 ,  G11B20/10527 ,  G11B5/86

摘要： A PCM signal recording and reproducing apparatus comprises first and second memory circuits, in which PCM signals are read and written using the first memory circuit, while PCM signals stored in the second memory circuit are error-corrected. At the end of writing by the first memory circuit, the first and second memory circuits are interchanged to read the error-corrected PCM signals stored in the second memory circuit. The read-out error-corrected PCM signals are then recorded on another magnetic tape.

摘要翻译： PCM信号记录和再现装置包括第一和第二存储器电路，其中使用第一存储器电路读取和写入PCM信号，而存储在第二存储器电路中的PCM信号被纠错。 在由第一存储器电路写入结束时，互换第一和第二存储器电路以读取存储在第二存储器电路中的经纠错的PCM信号。 然后将读出错误校正的PCM信号记录在另一个磁带上。

公开(公告)号：US4677622A

公开(公告)日：1987-06-30

申请号：US622711

申请日：1984-06-20

申请人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Keizo Nishimura ,  Takaharu Noguchi ,  Takao Arai ,  Toshifumi Shibuya

发明人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Keizo Nishimura ,  Takaharu Noguchi ,  Takao Arai ,  Toshifumi Shibuya

IPC分类号： G11B20/18 ,  G06F11/10

CPC分类号： G11B20/1809

摘要： This invention relates to an error correction upon reproduction of digital signals. The error correction is performed by decoding code words such as cross-interleaved Reed Solomon codes, in which first code blocks are formed by a plurality of information words which are in the first arrangement state and a plurality of first check words which are produced by codes associated with the plurality of information words with a Hamming distance of d.sub.1, and second code blocks are formed by a plurality of information words and a plurality of first check words which are in the second arrangement state and which consist of the said plurality of information words and the said plurality of first check words which are respectively included in the different first code blocks, and by a plurality of second check words which are produced by codes associated with the plurality of information words and the plurality of first check words with a Hamming distance of d.sub.2. At the first decoding stage, errors are detected and at the same time the flags indicative of the decoding states are added with respect to the second code blocks. At the second decoding stage, in accordance with the contents of the flags and on the basis of a combination of p.sub.2 and q selected from their combinations satisfying 2p.sub.2 +q.ltoreq.d.sub.1 -1, errors are detected and errors of p.sub.2 words are corrected and erasures of q words to which the flags were added are corrected with respect to the first code blocks.

摘要翻译： 本发明涉及数字信号再现时的纠错。 通过解码诸如交叉交织的里德·所罗门码的码字来执行纠错，其中第一码块由处于第一布置状态的多个信息字形成，并且由代码产生的多个第一检查字 与具有汉明距离d1的多个信息字相关联，第二码块由处于第二布置状态的多个信息字和多个第一检查词形成，并且由所述多个信息字组成 以及分别包含在不同的第一代码块中的所述多个第一校验字以及由与多个信息字相关联的代码产生的多个第二校验字和具有汉明距离的多个第一校验字 的d2。 在第一解码阶段，检测到错误，并且同时相对于第二代码块添加指示解码状态的标志。 在第二解码阶段，根据标志的内容，并且基于从满足2p2 + q·d1-1的组合中选择的p2和q的组合，检测出错误并校正p2个字的错误 并且相对于第一代码块校正添加了标志的q个字的擦除。

公开(公告)号：US4622600A

公开(公告)日：1986-11-11

申请号：US685551

申请日：1984-12-24

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

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

IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B20/1208 ,  G11B20/10527 ,  G11B20/1803 ,  G11B20/1813 ,  G11B27/3027 ,  G11B27/3063 ,  G11B20/1211 ,  G11B2020/10546 ,  G11B2020/10592 ,  G11B2220/90 ,  G11B2220/913

摘要： A rotary-head PCM data recorder in which PCM signals of m in number, a synchronizing signal, control signals related to the PCM signals, and a parity signal for error detection and correction are formed into data blocks, and data blocks of n in number are recorded on one track of a magnetic tape. Among the control signals, bits of signals common to n data blocks (i.e., information needed once for each track) are formed in distributed data allocated in a group of consecutive blocks or tracks, and multiple block distributive control data are recorded on one track multiple number of times, or multiple track distributive control data are recorded along n block strings a multiple number of times. In reproduction, block or track distributive data are composed to reproduce the control signals. The recorder thus arranged reduces the bit number needed for the control signals and compensates dropout of reproduced data due to scratches on the tape and the like.

摘要翻译： 旋转磁头PCM数据记录器，其中m个数字的PCM信号，同步信号，与PCM信号相关的控制信号，以及用于错误检测和校正的奇偶校验信号形成数据块，数字数据n 记录在磁带的一个轨道上。 在控制信号中，分配在一组连续块或轨道中的分布式数据中形成n个数据块共同的信号位（即，对于每个磁道一次需要的信息），并且多个块分布控制数据被记录在一个磁道多个 次数或多个磁道分布控制数据沿着n个块串被多次记录。 在再现中，构成块或轨道分布数据以再现控制信号。 如此布置的记录器减少了控制信号所需的位数，并补偿了由于磁带等上的划痕而导致的再现数据的丢失。

公开(公告)号：US4617599A

公开(公告)日：1986-10-14

申请号：US620893

申请日：1984-06-15

申请人： Takaharu Noguchi ,  Masaharu Kobayashi ,  Takao Arai ,  Toshifumi Shibuya

发明人： Takaharu Noguchi ,  Masaharu Kobayashi ,  Takao Arai ,  Toshifumi Shibuya

IPC分类号： G11B5/008 ,  G11B5/035 ,  G11B5/09 ,  G11B15/467 ,  G11B20/10 ,  G11B20/18 ,  G11B5/00

CPC分类号： G11B5/09 ,  G11B15/4671 ,  G11B20/10527 ,  G11B20/1809 ,  G11B5/00878 ,  G11B5/035

摘要： A digital signal recording/reproducing apparatus capable of recording and reproducing digital signals having differences in respect to sampling frequency thereof and the number of quantization bits per sample by means of a common circuit arrangement includes means for varying revolution speed of rotating heads for recording and reproduction or traveling speed of a recording medium as a function of different sampling frequencies. A signal processing circuit for processing the digital signals so as to be suited for the recording on the recording medium is controlled by a clock signal of which frequency is changed in dependence on the different sampling frequencies. The signal processing circuit is arranged so that PCM data contained in a frame is constituted by a number of bits which is equal to a common multiple of the different quantization bit numbers and added with a common frame synchronizing signal and common error detection and correction codes to thereby prepare the PCM signal of the frame arrangement. The digital signals which differ in the sampling frequency and the quantization bit numbers can be recorded by same recording and reproducing apparatus with an improved efficiency with a same wavelength and in a same signal format.

摘要翻译： 一种数字信号记录/再现装置，其能够记录和再现与其采样频率有差异的数字信号和通过公共电路装置的每个样本的量化位数，包括用于改变用于记录和再现的旋转磁头的转速的装置 或作为不同采样频率的函数的记录介质的行进速度。 用于处理适于在记录介质上进行记录的数字信号的信号处理电路由频率根据不同采样频率而变化的时钟信号控制。 信号处理电路被布置成使得包含在帧中的PCM数据由等于不同量化比特数的公倍数的比特数构成，并且加上公共帧同步信号和公共错误检测和校正码 从而准备帧配置的PCM信号。 采样频率和量化比特数不同的数字信号可以由相同的记录和再现装置以相同的波长和相同的信号格式提高效率来记录。

公开(公告)号：US4594621A

公开(公告)日：1986-06-10

申请号：US649654

申请日：1984-09-12

申请人： Takaharu Noguchi ,  Shigeru Yamazaki ,  Takao Arai

发明人： Takaharu Noguchi ,  Shigeru Yamazaki ,  Takao Arai

IPC分类号： G11B5/588 ,  G11B5/008 ,  G11B5/09 ,  G11B15/467 ,  G11B20/10 ,  G11B20/18 ,  H04N5/91 ,  G11B5/52 ,  G11B5/56

CPC分类号： G11B15/4678 ,  G11B20/10527 ,  G11B20/1809 ,  G11B5/0086 ,  G11B5/00878 ,  G11B5/09

摘要： In a rotary head type digital information signal recording and reproducing apparatus having plural rotary heads mounted on a rotary drum so as to be capable of recording and reproducing signals on parallel, oblique tracks on a magnetic tape, a tracking signal is recorded on at least one portion of each track which is not overlapped with a portion of each track where a digital information signal is recorded to avoid interference between the tracking signal and information signal. The tape travel speed and the rotary drum rotation speed are changed depending upon the transmission rate for a digital information signal to be recorded and reproduced to make the wavelength of a recorded signal frequency constant irrespective of the signal transmission rate. Tracking control is enhanced without increasing the error rate.

摘要翻译： 在旋转磁头式数字信息记录和再现装置中，具有安装在旋转磁鼓上的多个旋转磁头，以便能够并行地记录和再现信号，磁带上的倾斜磁道，跟踪信号被记录在至少一个 每个磁道的不与记录有数字信息信号的每个磁道的一部分重叠的部分，以避免跟踪信号和信息信号之间的干扰。 根据要记录和再现的数字信息信号的传输速率，磁带移动速度和旋转磁鼓旋转速度改变，使得记录信号的波长与信号传输速率无关。 增强跟踪控制，而不会增加错误率。