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1. 发明申请

US20090161514A1 INFORMATION RECORDING APPARATUS, INFORMATION READING APPARATUS AND COMPUTER READABLE MEDIUM 有权
标题翻译：信息记录装置，信息阅读装置和计算机可读介质
公开(公告)号：US20090161514A1
公开(公告)日：2009-06-25
申请号：US12166832
申请日：2008-07-02
申请人： Tetsuya KIMURA , Kensuke ITO
发明人： Tetsuya KIMURA , Kensuke ITO
IPC分类号： G11B20/10
CPC分类号： G11B20/12 , G11B20/1488 , G11B20/1496 , G11B2220/17
摘要： An information recording apparatus includes an information obtaining unit, a sign arrangement generating unit, a sign arrangement recording unit. The information obtaining unit obtains information to be recorded on a recording medium. The sign arrangement generating unit, based on information to be obtained by the information obtaining unit, generates an arrangement having three or more kinds of signs for expressing the obtained information. The sign arrangement recording unit, while shifting recording positions of a recording area included in the recording medium, records physical features sequentially into the respective recording positions of the recording area included in the recording medium. And each physical feature corresponds to one kind of the signs.
摘要翻译：信息记录装置包括信息获取单元，符号排列生成单元，符号排列记录单元。信息获取单元获得要记录在记录介质上的信息。符号排列生成单元基于由信息获取单元获得的信息，生成具有用于表示获得的信息的三种或更多种类型的符号的布置。符号排列记录单元在将包括在记录介质中的记录区域的记录位置移位的同时，将物理特征顺序地记录到包括在记录介质中的记录区域的各个记录位置。每个物理特征对应于一种迹象。

2. 发明授权

US4544963A Read signal detection in ternary 3PM magnetic recording 失效
标题翻译：在3PM磁记录中读取信号检测
公开(公告)号：US4544963A
公开(公告)日：1985-10-01
申请号：US571392
申请日：1984-01-16
申请人： George V. Jacoby , Allan A. Schwartz
发明人： George V. Jacoby , Allan A. Schwartz
IPC分类号： G11B20/14 , G11B5/09
CPC分类号： G11B20/1488
摘要： Circuitry for distinguishing each value in a read signal magnetically recorded in ternary-3 position modulation in which the values 1, 2 and 0 are detected and equalized into a singlet, a doublet and absence of magnetic flux change. The circuitry first determines the position locations of each singlet peak and doublet crossover point to establish proper timing of the output signals and then identifies the particular type of signal appearing at the timing points in the read signal sequence. Singlets are identified by the much greater amplitudes in the integrated read signal. Doublets are identified as waveforms having slopes at zero crossovers that correspond in polarity to that of the previous singlet. A novel detector circuit is provided that can correctly identify doublets in a code sequence, irrespective of the presence of a previous singlet, when a recording rule is followed that includes the insertion of a number of consecutive ternary 0 symbols into the recorded signal.
摘要翻译：用于区分磁记录在三进制3位置调制中的读取信号中的每个值的电路，其中值1,2和0被检测并均衡成单峰，双重和不存在磁通量变化。该电路首先确定每个单峰和双交叉点的位置位置，以建立输出信号的正确定时，然后识别在读信号序列中出现在定时点处的特定信号类型。单个信号通过集成读取信号中更大的幅度来识别。双峰被识别为具有与以前单峰的极性相对应的零交叉处的斜率的波形。提供了一种新颖的检测器电路，当遵循包括将多个连续三进制0符号插入到记录信号中的记录规则时，可以正确地识别码序列中的双频，而不管先前的单线性是否存在。

3. 发明授权

US3357003A Single channel quaternary magnetic recording system 失效
标题翻译：单通道四磁记录系统
公开(公告)号：US3357003A
公开(公告)日：1967-12-05
申请号：US42117764
申请日：1964-12-28
申请人： IBM
发明人： MACARTHUR STEVEN J
IPC分类号： G11B20/14
CPC分类号： G11B20/1488

4. 发明授权

US3274611A Binary to ternary code conversion recording system 失效
标题翻译：二进制到三进制代码转换记录系统
公开(公告)号：US3274611A
公开(公告)日：1966-09-20
申请号：US33382063
申请日：1963-12-27
申请人： IBM
发明人： BROWN DAVID T , SELLERS JR FREDERICK F
IPC分类号： G11B20/14
CPC分类号： G11B20/1426 , G11B20/1488

5. 发明授权

US09754610B2 Magnetic recording system with ternary pattern dependent write signaling 有权
公开(公告)号：US09754610B2
公开(公告)日：2017-09-05
申请号：US14977595
申请日：2015-12-21
申请人： Avago Technologies General IP (Singapore) Pte. Ltd.
发明人： Bruce A. Wilson , Ross S. Wilson , Peter J. Windler
IPC分类号： G11B5/09 , G11B5/00 , G11B20/10 , G11B5/012 , G11B5/02
CPC分类号： G11B5/09 , G11B5/012 , G11B5/02 , G11B20/10009 , G11B20/10027 , G11B20/1488 , G11B2005/0013 , G11B2005/0016
摘要： A storage system includes a magnetic write head, a magnetic storage medium, a write data circuit having a write data output and a magnet length signal output, and a preamplifier that receives the write data and a magnet length signal from the write data circuit, and sets at least one write current characteristic through the magnetic write head based at least in part on the magnet length signal. The write data circuit processes write data to be recorded on the magnetic storage medium by the magnetic write head. The magnet length signal output communicates magnet lengths in the write data.

6. 发明授权

US09721588B2 Magnetic recording system including differentiated write current emphasis signal generator circuit 有权
公开(公告)号：US09721588B2
公开(公告)日：2017-08-01
申请号：US14981842
申请日：2015-12-28
申请人： Avago Technologies General IP (Singapore) Pte. Ltd.
发明人： Peter J. Windler , Bruce A. Wilson , Ross S. Wilson
IPC分类号： G11B5/09 , G11B5/012 , G11B20/10 , G11B5/00
CPC分类号： G11B5/09 , G11B5/012 , G11B20/10009 , G11B20/10027 , G11B20/1488 , G11B2005/0013 , G11B2005/0016
摘要： A storage system includes a magnetic storage medium, a magnetic write head, a channel circuit and a preamplifier. The channel circuit includes a write data input, a differentiated edge emphasis signal generator, a write data output and a differentiated edge emphasis signal output. The preamplifier includes a write data input configured to receive write data from the channel circuit write data output, an edge emphasis signal input configured to receive a differentiated edge emphasis signal from the channel circuit differentiated edge emphasis signal output, and a write current edge emphasis controller configured to generate a write current to the magnetic write head based at least in part on the write data and on the differentiated edge emphasis signal.

7. 发明申请

US20090262406A1 RECORDING DEVICE, RECORDING/REPRODUCING METHOD, AND REPRODUCING METHOD 失效
标题翻译：记录装置，记录/再现方法和再现方法
公开(公告)号：US20090262406A1
公开(公告)日：2009-10-22
申请号：US12373743
申请日：2008-03-19
申请人： Masaaki Hara
发明人： Masaaki Hara
IPC分类号： G03H1/12 , G03H1/02
CPC分类号： H03M5/16 , G11B7/0065 , G11B7/083 , G11B7/128 , G11B20/1426 , G11B20/1488 , G11B20/1496 , G11B2220/2504
摘要： A hologram recording and reproduction method is configured such that the number of values which can be implemented per one pixel is increased from two according to a conventional method to three or more to achieve increase of the data recording capacity. While two values are conventionally represented by two different values of “0” and “1” of the amplitude, for example, phases “0” and “π” are combined with the amplitudes “0” and “1” thereby to make it possible to represent three values of “0,” “1” and “−1” (amplitude “1”×phase “π”). In particular, a two-value data train of “0” and “1” is converted into another data train of three values of “0,” “1” and “−1” in accordance with a rule for encoding determined in advance, and the amplitude “0” is allocated to pixels of the value “0”; the amplitude “1” (phase “0”) is allocated to pixels of the value “1”; and the amplitude “1” and the phase “π” are allocated to pixels of the value “−1,” to carry out recording. Increase of the data recording capacity can be achieved thereby.
摘要翻译：全息记录和再现方法被配置为使得每个像素可实现的值的数量从根据常规方法的两个增加到三个或更多，以实现数据记录容量的增加。虽然两个值通常由幅度“0”和“1”的两个不同值表示，例如，相位“0”和“pi”与振幅“0”和“1”组合，从而使其成为可能表示“0”，“1”和“-1”（幅度“1”x相“pi”）的三个值。特别地，根据预先确定的编码规则，将“0”和“1”的双值数据串转换为三个值为“0”，“1”和“-1”的数据序列，并且将幅度“0”分配给值“0”的像素; 将幅度“1”（相位“0”）分配给值“1”的像素; 并且将幅度“1”和相位“pi”分配给值“-1”的像素，以执行记录。从而可以实现数据记录容量的提高。

8. 发明申请

US20020054557A1 Multilevel record modulator and demodulator 失效
标题翻译：多级记录调制器和解调器
公开(公告)号：US20020054557A1
公开(公告)日：2002-05-09
申请号：US09984768
申请日：2001-10-31
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Hiroki Mouri , Takashi Yamamoto , Hiroyuki Nakahira , Akira Yamamoto
IPC分类号： G11B007/005
CPC分类号： G11B20/10009 , G11B20/1488 , H03M5/16 , H04L25/4923
摘要： An encoding efficiency higher than 1 is achieved by accomplishing ternary recording on a recording medium. For this purpose, an 8-bit binary data word is converted to a 5-symbol ternary code word. A look-up table stores a modulation/demodulation table defining the correspondence between the binary data word (8B) and the ternary code word (5T). A table generating circuit generates the modulation/demodulation table to be stored in the look-up table such that each of constraints specified by a plurality of parameters is satisfied. If a PRML (Partial Response Maximum Likelihood) scheme is combined with an 8B5T code thus obtained, a signal-to-noise ratio is improved.
摘要翻译：通过在记录介质上进行三进制记录来实现高于1的编码效率。为此，将8位二进制数据字转换为5符号三进制码字。查找表存储定义二进制数据字（8B）和三进制码字（5T）之间的对应关系的调制/解调表。表生成电路生成要存储在查找表中的调制/解调表，使得满足由多个参数指定的每个约束。如果PRML（部分响应最大似然）方案与由此获得的8B5T码组合，则提高了信噪比。

9. 发明授权

US4551773A Encoding and decoding apparatus and method utilizing hierarchical code substitution 失效
标题翻译：使用分层代码替换的编码和解码设备和方法
公开(公告)号：US4551773A
公开(公告)日：1985-11-05
申请号：US398744
申请日：1982-07-16
申请人： Martin Cohn , George V. Jacoby , Jorgen P. Vinding
发明人： Martin Cohn , George V. Jacoby , Jorgen P. Vinding
IPC分类号： G11B20/14 , G11B5/09
CPC分类号： G11B20/1426 , G11B20/1488
摘要： A ternary magnetic recording system wherein groups of binary input digits are transformed into corresponding groups of ternary recording code symbols utilizing a hierarchical code substitution system in which the longest valid group in the code is encoded. The code substitution system provides retention of the advantageous properties of a prior ternary recording system while significantly enhancing the automatic gain control utilized in amplitude discrimination between two of the ternary recording symbols. Anomalous detection of chained doublets is also obviated. Data recovery is effected by decoding apparatus utilizing an eight bit addressable ROM addressed with a twelve bit ternary word.
摘要翻译：一种三进制磁记录系统，其中使用分层代码替代系统将二进制输入数字组变换成相应的三进制记录码符号组，其中代码中最长的有效组被编码。代码替换系统提供保留先前三进制记录系统的有利属性，同时显着增强在两个三进制记录符号之间的幅度鉴别中使用的自动增益控制。链状双峰的异常检测也被消除。数据恢复是利用利用十二位三进制字寻址的八位可寻址ROM的解码装置实现的。

10. 发明授权

US4482927A Ternary magnetic recording and reproducing system with simultaneous overwrite 失效
标题翻译：具有同时重写的三元磁记录和再现系统
公开(公告)号：US4482927A
公开(公告)日：1984-11-13
申请号：US339353
申请日：1982-01-15
申请人： Hartvig E. Melbye , George V. Jacoby
发明人： Hartvig E. Melbye , George V. Jacoby
IPC分类号： G11B20/14 , G11B5/09
CPC分类号： G11B20/1488
摘要： A saturated flux equivalent to three amplitude level recording is attained by recording two levels by conventional saturation of the medium and the third level by writing a high frequency which erases old data and is read back as a zero level due to limited playback or read frequency response.
摘要翻译：通过写入一个擦除旧数据的高频并由于有限的回放或读取频率响应而被读回零电平，通过记录介质和第三电平的常规饱和来记录两个电平，从而获得等于三个幅度电平记录的饱和磁通。

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