公开(公告)号：US07154417B2

公开(公告)日：2006-12-26

申请号：US11273707

申请日：2005-11-14

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： H03M5/00

CPC分类号： G11B20/1426 ,  G11B2020/1457 ,  G11B2220/2579

摘要： In an optical disk apparatus, the polarity of synchronization information is adaptively set to thereby improve the quality of data recording and reproduction. When inserting and recording synchronization information, an encoder of an optical disk apparatus temporarily sets the polarity of the synchronization information to either a mark or a space in accordance with a predetermined rule. A DSV which is obtained if the synchronization information is to be recorded with the polarity which has been temporarily set is computed. If the DSV which is computed is equal to or smaller than a predetermined limit value, the polarity which has been temporarily set is accepted and the synchronization information is actually recorded with the polarity. If the DSV which is computed exceeds the limit value, on the other hand, the polarity which has been temporarily set is not adopted, and the synchronization information is actually recorded with a polarity which is different from the polarity.

摘要翻译： 在光盘装置中，自适应地设定同步信息的极性，从而提高数据记录和再现的质量。 当插入和记录同步信息时，光盘装置的编码器根据预定规则将同步信息的极性临时设置为标记或空格。 计算如果要以暂时设定的极性来记录同步信息所获得的DSV。 如果计算出的DSV等于或小于预定极限值，则临时设置的极性被接受，并且实际上以极性记录同步信息。 另一方面，如果计算出的DSV超过限制值，则不采用临时设定的极性，实际上以与极性不同的极性记录同步信息。

公开(公告)号：US07120110B2

公开(公告)日：2006-10-10

申请号：US10235234

申请日：2002-09-04

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： G11B5/09

CPC分类号： G11B20/1403 ,  G11B20/24

摘要： A signal processing circuit for eliminating noise from an input binary signal includes a measurement part and a signal output part. The measurement part measures the cumulative period of time of at least one of high-level and low-level states of the input binary signal for a predetermined period of time after the polarity of the input binary signal is inverted. The signal output part outputs at least one of high-level and low-level signals in accordance with the cumulative period of time.

公开(公告)号：US20060208932A1

公开(公告)日：2006-09-21

申请号：US11376426

申请日：2006-03-15

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： H03M7/00

CPC分类号： G11B20/10009 ,  G11B7/00454 ,  G11B20/1426 ,  G11B20/182 ,  G11B20/1879 ,  G11B2007/0006 ,  G11B2020/1457

摘要： An optical disk drive for readily setting a recording strategy for all optical disks. A table, where optimal recording strategies are set for respective pieces of identification information about optical disks, is stored in memory of a system controller. An average recording strategy is set for an optical disk which does not have any identification information. When data are recorded on the optical disk having no identification information, test data are recorded by means of an average recording strategy and another strategy determined by changing the average strategy, and a strategy—by means of which a rate of detection of a synchronizing signal assumes a predetermined value or more—is set as an optimal strategy. The rate of detection of the synchronizing signal of the mark and the rate of detection of the synchronizing signal of the space are computed, and the results of computation are compared with the predetermined value.

摘要翻译： 一种光盘驱动器，用于容易地设置所有光盘的记录策略。 对于关于光盘的各个识别信息设置最佳记录策略的表存储在系统控制器的存储器中。 为没有任何识别信息的光盘设置平均记录策略。 当数据被记录在没有识别信息的光盘上时，通过平均记录策略和通过改变平均策略确定的另一个策略来记录测试数据，并且通过该策略将同步信号的检测速率 假设预定值或更多 - 被设置为最佳策略。 计算标记的同步信号的检测速率和空间的同步信号的检测速率，并将计算结果与预定值进行比较。

公开(公告)号：US06999388B2

公开(公告)日：2006-02-14

申请号：US10131974

申请日：2002-04-24

申请人： Akira Mashimo ,  Chisato Takayama ,  Keishi Ueno

发明人： Akira Mashimo ,  Chisato Takayama ,  Keishi Ueno

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/094

摘要： An optical disk apparatus capable of adjusting a focus servo and the like by precisely detecting a jitter amount. Light reflected from an optical disk is converted into an RF signal in an optical pickup and amplified by an RF amplifier before being supplied to an equalizer. The boost amount of the equalizer is set to zero during adjustment and set to a predetermined finite value (e.g., +20 dB) during normal recording and reproducing. By first setting the boost amount to zero, the delay characteristics of the RF signal from 3T to 11T are flattened such that an accurate jitter amount can be determined based on the integrated value of the phase differences of 3T to 11T, thereby allowing the optical pickup to be adjusted so as to minimize the jitter amount.

公开(公告)号：US20060007822A1

公开(公告)日：2006-01-12

申请号：US11177137

申请日：2005-07-08

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： G11B7/00 ,  G11B5/09

CPC分类号： G11B27/24 ,  G11B20/1803 ,  G11B2020/1843 ,  G11B2220/2579

摘要： An optical disk device which drives an HD-DVD or the like. When recording or reproducing data with respect to an optical disk of HD-DVD, the address information is demodulated by an address decoding circuit and is supplied to a system controller. The system controller performs error checking using the CRC technique. When a resulting CRC value does not correspond to CRC bits, the system controller regards a bit in which the number of waves in wobbles having the same phase is not four, which is a predetermined value, as an error bit, and performs bit data replacement with respect to the error bit. Specifically, the system controller searches for a combination of bit values by which a resulting CRC value matches the CRC bits, thereby performing error correction. At this time, the system controller tries the data value replacement preferentially using a combination of bit values by which the address is advanced by one address from the immediately previous address which is fixed among all the possible combinations with respect to the error bits.

摘要翻译： 驱动HD-DVD等的光盘装置。 相对于HD-DVD的光盘记录或再现数据时，地址信息由地址解码电路解调并提供给系统控制器。 系统控制器使用CRC技术执行错误检查。 当所得到的CRC值不对应于CRC比特时，系统控制器将具有相同相位的摆动中的波数不是作为预定值的四位的比特作为错误比特，并执行比特数据替换 相对于错误位。 具体地，系统控制器搜索所得到的CRC值与CRC比特匹配的比特值的组合，从而进行纠错。 此时，系统控制器优先使用比特值的组合来尝试数据值替换，通过该组合，地址由相对于错误比特的所有可能组合中固定的紧前一个地址的一个地址提前。

公开(公告)号：US20050201231A1

公开(公告)日：2005-09-15

申请号：US11078881

申请日：2005-03-09

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： G11B20/10 ,  G11B5/09 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B20/14 ,  G11B20/18 ,  G11B27/034 ,  G11B27/19 ,  G11B27/24

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/00718 ,  G11B20/1803 ,  G11B20/1833 ,  G11B27/034 ,  G11B2220/2579

摘要： In an optical disk of HD-DVD, data is recorded in both grooves and lands. A groove track includes its own data region called a groove (G) track address system formed therein and a land track includes its own data region called a land (L) track address system formed therein. One bit of address data is composed of four redundant wobble waves. When only three or two of the four wobble waves can be detected, an error is determined. When an error is determined in tracing of a groove track, bit data of the L track address system is used to correct the error. When an error is determined in tracing of a land track, bit data of the G track address system is used to correct the error.

摘要翻译： 在HD-DVD的光盘中，数据被记录在两个凹槽和平台中。 凹槽轨道包括其自身的数据区域，其中形成有凹槽（G）轨道地址系统，并且脊迹道包括其自身的数据区域，称为其中形成的脊（L）轨道地址系统。 一位地址数据由四个冗余摆波组成。 当只能检测到四个摆动波中的三个或两个时，确定一个误差。 当在跟踪凹槽轨迹中确定错误时，使用L轨道地址系统的位数据来校正误差。 当在轨迹追踪中确定错误时，使用G轨道地址系统的位数据来校正误差。

公开(公告)号：US20050099927A1

公开(公告)日：2005-05-12

申请号：US10985698

申请日：2004-11-10

申请人： Akira Mashimo

发明人： Akira Mashimo

IPC分类号： G11B20/14 ,  G11B5/09 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B20/10 ,  G11B27/30 ,  H03M5/14

CPC分类号： G11B7/013 ,  G11B7/1263 ,  G11B20/10 ,  G11B20/1426 ,  G11B27/3027 ,  G11B2020/1287 ,  G11B2020/1457 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562 ,  H03M5/145

摘要： An optical disk apparatus for suppressing a DSV and performing R-OPC. An encoding/decoding circuit inserts a synchronization information item to a head of a synchronous frame once when data are recorded on an optical disk. First, the encoding/decoding circuit inserts synchronization information as a mark or a space on the basis of a DSV. When the polarity of the first synchronization information item is a mark, the polarity of a next synchronization information item is also set on the basis of the DSV. When the polarity of the first synchronization information is a space, the polarity of the next synchronization information is set to a mark. R-OPC is performed at a timing when the polarity of the synchronization information is a mark.

摘要翻译： 一种用于抑制DSV并执行R-OPC的光盘装置。 当数据被记录在光盘上时，编码/解码电路将同步信息项插入同步帧的头部。 首先，编码/解码电路基于DSV将同步信息作为标记或空格插入。 当第一同步信息项的极性是标记时，也基于DSV设置下一个同步信息项的极性。 当第一同步信息的极性是空格时，下一个同步信息的极性被设置为一个标记。 在同步信息的极性为标记的时刻进行R-OPC。

公开(公告)号：US20050030125A1

公开(公告)日：2005-02-10

申请号：US10895911

申请日：2004-07-22

申请人： Masahiro Nakano ,  Akira Mashimo ,  Katsuo Sato

发明人： Masahiro Nakano ,  Akira Mashimo ,  Katsuo Sato

IPC分类号： H01L41/09 ,  H01L41/18 ,  H01L41/187 ,  H01L41/22 ,  H01L41/29 ,  H03H3/08 ,  H03H9/02 ,  H03H9/05 ,  H03H9/10 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64 ,  H03H9/72

CPC分类号： H03H9/02992 ,  H01L2224/05001 ,  H01L2224/05023 ,  H01L2224/05124 ,  H01L2224/05568 ,  H01L2224/05624 ,  H01L2224/16225 ,  H03H3/08 ,  H03H9/02929 ,  H03H9/02984 ,  H03H9/0576 ,  H03H9/059 ,  H03H9/1071 ,  H03H9/72 ,  H03H9/725 ,  Y10T29/42 ,  H01L2924/00014

摘要： In a surface acoustic wave element according to an embodiment of this invention, raised electrodes 20 formed on thin film electrodes 18 are provided with throughholes 31. Additionally, bumps 26 arranged on the raised electrodes 20 reach the thin film electrode 18 by going through an oxide film 18a of the thin film electrodes 18 after part of the bumps enters the throughholes 31 of the raised electrodes 20. By doing this, conduction is achieved between the thin film electrodes 18 and the bumps 26 formed on a piezoelectric monocrystal substrate 28. Thus, a solid oxide film 18a is formed on the surface of the thin film electrodes 18 formed from monocrystal aluminum, but part of the bumps 26 which enters the throughholes 31 of the raised electrodes 20 goes through this oxide film 18a, so conduction between the thin film electrode 18 and the bump 26 is achieved with higher accuracy.

摘要翻译： 在根据本发明的实施例的表面声波元件中，形成在薄膜电极18上的凸起电极20设置有通孔31.另外，布置在凸起电极20上的凸块26通过氧化物到达薄膜电极18 一部分凸块之后的薄膜电极18的薄膜18a进入凸起电极20的通孔31.由此，在薄膜电极18和形成在压电单晶基板28上的凸点26之间实现导通。因此， 在由单晶铝形成的薄膜电极18的表面上形成固体氧化物膜18a，但是进入凸起电极20的通孔31的凸块26的一部分穿过该氧化膜18a，因此薄膜 电极18和凸块26以更高的精度实现。

公开(公告)号：US20050025016A1

公开(公告)日：2005-02-03

申请号：US10924445

申请日：2004-08-24

申请人： Akira Mashimo ,  Keishi Ueno

发明人： Akira Mashimo ,  Keishi Ueno

IPC分类号： G11B7/095 ,  G11B7/00 ,  G11B7/007 ,  G11B7/08

CPC分类号： G11B7/0956 ,  G11B7/00736 ,  G11B7/0938 ,  G11B7/0945 ,  G11B7/24085

摘要： A tilt detection system includes an optical disk having a series of data recorded therein, the series of data having a pulse width smaller than the minimum pulse width of data recorded in an ordinary optical disk; a reproducing part reproducing a signal from the optical disk by emitting a light beam onto the optical disk; and a tilt detecting part detecting a tilt of the light beam with respect to the optical disk based on a reproduced RF signal provided by the reproducing-part when the series of data having the smaller pulse width is reproduced.

摘要翻译： 倾斜检测系统包括具有记录在其中的一系列数据的光盘，所述一系列数据具有小于记录在普通光盘中的数据的最小脉冲宽度的脉冲宽度; 再现部分通过将光束发射到光盘上来再现来自光盘的信号; 以及当再现具有较小脉冲宽度的一系列数据时，基于由再现部分提供的再现RF信号来检测光束相对于光盘的倾斜的倾斜检测部分。

公开(公告)号：US5717679A

公开(公告)日：1998-02-10

申请号：US670526

申请日：1996-06-27

申请人： Akira Mashimo ,  Toshiki Shimizu

发明人： Akira Mashimo ,  Toshiki Shimizu

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

CPC分类号： G11B27/24 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0953 ,  G11B2220/218 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B27/3027 ,  G11B7/00745

摘要： An apparatus for use with a recordable compact disk having an optically discernible pregroove formed thereon to provide a multiturn spiral track along which data pits are to be formed. Each pregroove turn is partly wobbled to represent addresses. Since wobble detection is easy to be impeded by track eccentricity with respect to the axis of disk rotation, a pair of compensator circuits are connected one to each output of a composite photodetector for eliminating from the photodetector output signal a frequency component due to track eccentricity. Each compensator circuit comprises a variable gain amplifier circuit, and a feedback loop for varying the amplifier gain in inverse proportion to the amplitude of the frequency component due to track eccentricity.

摘要翻译： 一种与可记录光盘一起使用的装置，其具有形成在其上的光学可辨别的预制槽，以提供要形成数据坑的多圈螺旋轨道。 每个预槽转动部分摆动以表示地址。 由于摆动检测容易被磁盘偏心度相对于磁盘旋转轴阻挡，所以一对补偿电路一个连接到复合光电检测器的每个输出端，以从光电检测器输出信号中消除由于磁道偏心引起的频率分量。 每个补偿器电路包括可变增益放大器电路和反馈回路，用于根据轨道偏心率与频率分量的振幅成反比地改变放大器增益。