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1. 发明授权

US07206351B2 Signal evaluation devices and signal evaluation methods, signal quality evaluation methods and reproducing devices and recording devices 有权
标题翻译：信号评估装置和信号评估方法，信号质量评估方法和再现装置以及记录装置
公开(公告)号：US07206351B2
公开(公告)日：2007-04-17
申请号：US10154898
申请日：2002-05-24
申请人： Tetsuya Okumura , Jun Akiyama , Tomiyuki Numata , Shigemi Maeda , Masanori Ushioda
发明人： Tetsuya Okumura , Jun Akiyama , Tomiyuki Numata , Shigemi Maeda , Masanori Ushioda
IPC分类号： H04L5/12
CPC分类号： G11B11/10595 , G11B7/094 , G11B7/0956 , G11B7/1267 , G11B11/10504 , G11B11/10515 , G11B20/10009 , G11B20/10055 , G11B20/10101 , G11B20/10481 , G11B20/1426 , H03M5/145 , H03M7/46 , H03M13/15 , H03M13/3738 , H03M13/39 , H03M13/41 , H03M13/6312 , H03M13/6343
摘要： A signal evaluation device for evaluating a decoded signal of maximum likelihood decoding includes: a differential metric circuit for finding differential metrics; comparators for judging whether a difference of differential metrics exceeds a predetermined threshold; counters for counting respective output pulses of the comparators; and a controller for finding the probability of the differential metrics falling at or below the predetermined threshold, based on the number of measured samples and the number of samples counted by the counters, and processing the probability by arithmetic operations so as to obtain an index of signal evaluation. With this arrangement, signal evaluation devices for evaluating a recording medium or a recording medium driving device can have a simpler structure and can perform evaluations in a plurality of PR modes.
摘要翻译：用于评估最大似然解码的解码信号的信号评估装置包括：用于找到差分度量的差分度量电路; 比较器，用于判断差分度量的差异是否超过预定阈值; 用于计数比较器的各个输出脉冲的计数器; 以及控制器，用于基于所述测量样本的数量和由所述计数器计数的采样数量，找出所述差分量度落在或低于所述预定阈值的概率，并且通过算术运算来处理所述概率，从而获得信号评估。通过这种布置，用于评估记录介质或记录介质驱动装置的信号评估装置可以具有更简单的结构，并且可以在多个PR模式中执行评估。

2. 发明申请

US20110205876A1 OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE, METHOD FOR CONTROLLING THE DEVICE, OPTICAL INFORMATION RECORDING AND REPRODUCING PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM 审中-公开
标题翻译：光信息记录介质，光信息记录和再现设备，用于控制设备的方法，光信息记录和再现程序以及计算机可读存储介质
公开(公告)号：US20110205876A1
公开(公告)日：2011-08-25
申请号：US13126243
申请日：2009-10-01
申请人： Yoshihisa Adachi , Shigemi Maeda , Hideharu Tajima , Ikuo Nakano , Tetsuya Okumura , Takashi Arimoto , Noboru Iwata , Tetsuya Hayashi , Atsushi Etoh
发明人： Yoshihisa Adachi , Shigemi Maeda , Hideharu Tajima , Ikuo Nakano , Tetsuya Okumura , Takashi Arimoto , Noboru Iwata , Tetsuya Hayashi , Atsushi Etoh
IPC分类号： G11B20/10 , G11B7/26
CPC分类号： G11B7/0079 , H04N5/85
摘要： The present invention provides an optical information recording medium (2) capable of shortening a time from acquiring identification information to starting a program etc. recorded on an ROM layer. The optical information recording medium (2) includes two or more information recording layers, information of each of the two or more information recording layers is readable by emitting reproducing light thereto, at least one of said two or more information recording layers is an RE/R layer (4), at least another one of said two or more information recording layers is an ROM layer (5), and the RE/R layer (4) includes an identification information recording region (41), and an interlayer-movement Flag is recorded on the identification information recording region (41).
摘要翻译：本发明提供一种光信息记录介质（2），其能够缩短从获取记录在ROM层上的识别信息到开始程序等的时间。光信息记录介质（2）包括两个或更多个信息记录层，两个或多个信息记录层中的每一个的信息可通过发射再现光来读取，所述两个或多个信息记录层中的至少一个是RE / R层（4）中，所述两个或多个信息记录层中的至少另一个是ROM层（5），RE / R层（4）包括识别信息记录区域（41），层间移动标志被记录在识别信息记录区域（41）上。

3. 发明授权

US06674701B2 Apparatus for readout of optical recording medium 失效
标题翻译：光记录介质读出装置
公开(公告)号：US06674701B2
公开(公告)日：2004-01-06
申请号：US10033319
申请日：2001-12-27
申请人： Tetsuya Okumura , Shigemi Maeda
发明人： Tetsuya Okumura , Shigemi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/00 , G11B7/005 , G11B7/00745 , G11B7/08505
摘要： By adding a predetermined offset value which is not less than 0 to, to the value of a readout power at a time when readout power control operations are temporarily suspended, i.e., at a time when an optical head initiates a seek operation, with an adder, this latter value being stored in a readout power value storage circuit, because an optical recording medium readout apparatus makes it possible to cause the value of the readout power at the time when readout power control operations resume, i.e., at the time of completion of the seek operation performed by the optical head, to avoid abnormal power domains in which change in amplitude ratio with respect to change in readout power is not monotonically decreasing, it is made possible to avoid abnormal conditions such as occurrence of lag in response during readout power control operations.
摘要翻译：通过在暂时停止读出功率控制操作时，即在光头启动寻道操作的时刻，向加法器添加不小于0的预定偏移值，并将其与读出功率的值相加，，后一个值被存储在读出功率值存储电路中，因为光学记录介质读出装置使得可以使读出功率控制操作恢复时的读出功率的值即在完成时通过光头执行的寻道操作，为了避免相对于读出功率变化的振幅比变化的异常功率域不是单调减少，可以避免在读出功率期间发生响应滞后等异常情况控制操作。

4. 发明申请

US20120002514A1 Information recording and reproducing apparatus, program for controlling same, computer-readable storage medium, method for controlling information recording and reproducing apparatus, and information storage medium 失效
标题翻译：信息记录和再现装置，用于控制它的程序，计算机可读存储介质，用于控制信息记录和再现装置的方法以及信息存储介质
公开(公告)号：US20120002514A1
公开(公告)日：2012-01-05
申请号：US13138519
申请日：2010-02-22
申请人： Atsushi Etoh , Tetsuya Okumura , Hideharu Tajima , Shigemi Maeda , Yoshihisa Adachi , Tetsuya Hayashi , Yasuhiro Harada , Takashi Arimoto , Ikuo Nakarno , Masaki Yamamoto , Hirohisa Yamada
发明人： Atsushi Etoh , Tetsuya Okumura , Hideharu Tajima , Shigemi Maeda , Yoshihisa Adachi , Tetsuya Hayashi , Yasuhiro Harada , Takashi Arimoto , Ikuo Nakarno , Masaki Yamamoto , Hirohisa Yamada
IPC分类号： G11B21/08
CPC分类号： G11B7/00736 , G11B7/08511 , G11B7/24038 , G11B19/127 , G11B2007/0013 , G11B2220/235
摘要： An invention disclosed includes a layer number obtaining section (222) for determining which information storage layer (L1) has been accessed and a layer type identifying section (223) for identifying a type of the information storage layer (L1) determined by the layer number obtaining section (222). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.
摘要翻译：所公开的发明包括用于确定已经访问了哪个信息存储层（L1）的层号获取部分（222）和用于识别由层号确定的信息存储层（L1）的类型的层类型识别部分（223）获取部分（222）。利用这种配置，即使在信息记录和再现装置通过错误操作等访问与预期信息存储层不同的信息存储层的情况下，仍然可以解决设置的记录或再现控制方案之间的不匹配以及适合于如此访问的信息存储层的记录或再现控制方案。

5. 发明授权

US07194674B2 Adaptive waveform equalization for viterbi-decodable signal and signal quality evaluation of viterbi-decodable signal 有权
标题翻译：维特比可解码信号的自适应波形均衡和维特可解码信号的信号质量评估
公开(公告)号：US07194674B2
公开(公告)日：2007-03-20
申请号：US10625853
申请日：2003-07-22
申请人： Tetsuya Okumura , Shigemi Maeda
发明人： Tetsuya Okumura , Shigemi Maeda
IPC分类号： H03K5/125
CPC分类号： H04L25/03038 , G11B7/1263 , G11B20/10009 , G11B20/10046 , G11B20/10101 , G11B20/10481 , H04L2025/03617
摘要： The waveform equalizing device includes: an FIR filter for generating an equalized signal pattern y(i, n) on the basis of equalization of a waveform of the reproduced signal pattern u(i, n); a Viterbi decoding circuit for detecting a path metric difference s(n) between a correct path determined as a survivor path and an error path which fails to survive the correct path in Viterbi decoding based on the equalized signal pattern y(i, n); a target register for setting a target value ds for the path metric difference s(n); and a tap coefficients update circuit for adapting the equalization according to an error of the detected path metric difference from the target value. The tap coefficients update circuit adapts equalization properties so that the mean square error is minimized, thereby achieving a satisfactory result in lowering the error rate.
摘要翻译：波形均衡装置包括：FIR滤波器，用于基于再现信号模式u（i，n）的波形的均衡生成均衡信号模式y（i，n）; 维特比解码电路，用于基于均衡的信号模式y（i，n）来检测确定为幸存路径的正确路径和在维特比解码中不能存活正确路径的错误路径之间的路径度量差s（n）; 用于设置路径度量差s（n）的目标值ds的目标寄存器; 以及抽头系数更新电路，用于根据检测到的路径度量差与目标值的误差来适配均衡。抽头系数更新电路适应均衡特性，使得均方误差最小化，从而在降低误码率方面实现令人满意的结果。

6. 发明授权

US08400896B2 Information recording and reproducing apparatus, program for controlling same, computer-readable storage medium, method for controlling information recording and reproducing apparatus, and information storage medium 失效
标题翻译：信息记录和再现装置，用于控制其的程序，计算机可读存储介质，用于控制信息记录和再现装置的方法以及信息存储介质
公开(公告)号：US08400896B2
公开(公告)日：2013-03-19
申请号：US13138519
申请日：2010-02-22
申请人： Atsushi Etoh , Tetsuya Okumura , Hideharu Tajima , Shigemi Maeda , Yoshihisa Adachi , Tetsuya Hayashi , Yasuhiro Harada , Takashi Arimoto , Ikuo Nakano , Masaki Yamamoto , Hirohisa Yamada
发明人： Atsushi Etoh , Tetsuya Okumura , Hideharu Tajima , Shigemi Maeda , Yoshihisa Adachi , Tetsuya Hayashi , Yasuhiro Harada , Takashi Arimoto , Ikuo Nakano , Masaki Yamamoto , Hirohisa Yamada
IPC分类号： G11B15/04
CPC分类号： G11B7/00736 , G11B7/08511 , G11B7/24038 , G11B19/127 , G11B2007/0013 , G11B2220/235
摘要： An invention disclosed includes a layer number obtaining section (222) for determining which information storage layer (L1) has been accessed and a layer type identifying section (223) for identifying a type of the information storage layer (L1) determined by the layer number obtaining section (222). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.
摘要翻译：所公开的发明包括用于确定已经访问了哪个信息存储层（L1）的层号获取部分（222）和用于识别由层号确定的信息存储层（L1）的类型的层类型识别部分（223）获取部分（222）。利用这种配置，即使在信息记录和再现装置通过错误操作等访问与预期信息存储层不同的信息存储层的情况下，仍然可以解决设置的记录或再现控制方案之间的不匹配以及适合于如此访问的信息存储层的记录或再现控制方案。

7. 发明申请

US20110158067A1 Recording/reproducing device and method for controlling same 审中-公开
标题翻译：记录/再现装置及其控制方法
公开(公告)号：US20110158067A1
公开(公告)日：2011-06-30
申请号：US12930135
申请日：2010-12-29
申请人： Yasuhiro Harada , Shigemi Maeda , Tetsuya Okumura , Noboru Iwata , Tazuko Kitazawa , Toshihiko Sakai , Hirohisa Yamada
发明人： Yasuhiro Harada , Shigemi Maeda , Tetsuya Okumura , Noboru Iwata , Tazuko Kitazawa , Toshihiko Sakai , Hirohisa Yamada
IPC分类号： G11B20/00
CPC分类号： G11B27/322 , G11B2020/1247 , G11B2020/1248 , G11B2020/1259 , G11B2220/211 , G11B2220/235 , G11B2220/2541 , G11B2220/2562
摘要： A recording/reproducing device includes: a data comparing section which compares, at the time of ejection of an optical disc, recorded information recorded on a ROM layer of the optical disc and relevant information (e.g., additional data) which is stored in the recording/reproducing device and which is related to registered information (e.g., content) recorded on an RE layer of the optical disc; and a data selecting section which selects, based on a result of the comparison by the data comparing section, relevant information for recording to be recorded on the ROM layer of the optical disc from among the relevant information.
摘要翻译：记录/再现装置包括：数据比较部分，其在弹出光盘时比较记录在光盘的ROM层上的记录信息和存储在记录中的相关信息（例如附加数据） /再现装置，其与记录在光盘的RE层上的注册信息（例如，内容）相关; 以及数据选择部，根据数据比较部的比较结果，从相关信息中选择要记录在光盘的ROM层上的相关信息。

8. 发明授权

US06771576B2 Optical reproduction apparatus 失效
标题翻译：光学再现装置
公开(公告)号：US06771576B2
公开(公告)日：2004-08-03
申请号：US09833405
申请日：2001-04-11
申请人： Tetsuya Okumura , Shigemi Maeda
发明人： Tetsuya Okumura , Shigemi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/005 , G11B7/00745 , G11B11/10515 , G11B11/10595 , G11B20/10009
摘要： An optical reproduction apparatus in accordance with the present invention has a gain control circuit for controlling a gain of an amplifier circuit which amplifies a reproduction signal in accordance with amplitudes of the reproduction signal from an optical recording medium. The amplitude is sent to a power control calculation circuit which controls the reproduction power of a light beam in accordance with the amplitude. The gain control circuit has a slower response speed than that of the power control circuit at least during a period when the power control circuit controls the reproduction power. This allows to provide an optical reproduction apparatus that can realize the stable reproduction power and automatic gain control even to the unevenness of the amplitudes of the reproduction signal.
摘要翻译：根据本发明的光学再现装置具有用于控制放大器电路的增益的增益控制电路，该放大器电路根据来自光学记录介质的再现信号的幅度来放大再现信号。振幅被发送到功率控制计算电路，其根据振幅控制光束的再现功率。至少在功率控制电路控制再现功率的期间，增益控制电路的响应速度比功率控制电路慢。这允许提供即使对于再现信号的幅度的不均匀性也能够实现稳定的再现功率和自动增益控制的光学再现装置。

9. 发明授权

US06584050B1 Optical recording device, optical reproducing device, and optical memory medium 有权
标题翻译：光学记录装置，光学再现装置和光学存储介质
公开(公告)号：US06584050B1
公开(公告)日：2003-06-24
申请号：US09559898
申请日：2000-04-26
申请人： Tetsuya Okumura , Shigemi Maeda
发明人： Tetsuya Okumura , Shigemi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/005 , G11B7/00745 , G11B11/10515 , G11B11/10595
摘要： A recording-reproducing device includes a power control pattern generating circuit for generating a power control pattern to be used for control of a reproducing power of a semiconductor laser, a phase adjusting pattern generating circuit for adjusting a phase of a reproducing clock to be used upon reproduction of the power control pattern, a synchronous pattern generating circuit for generating a synchronous pattern to be recorded immediately before the phase adjusting pattern, and a recording data selecting circuit. The recording data selecting circuit consecutively selects an output of the phase adjusting pattern generating circuit, an output of the synchronous pattern generating circuit, and an output of the power control pattern generating circuit, and records these outputs in a front part of each sector of a magneto-optical disk.
摘要翻译：一种记录再现装置，包括：功率控制模式发生电路，用于产生用于控制半导体激光器的再现功率的功率控制模式;相位调整模式发生电路，用于调节要用于的半导体激光器的再现时钟的相位; 功率控制模式的再现，用于产生要在相位调整模式之前记录的同步模式的同步模式产生电路和记录数据选择电路。记录数据选择电路连续地选择相位调整图形生成电路的输出，同步图形生成电路的输出和功率控制图形生成电路的输出，并将这些输出记录在每个扇区的前部磁光盘。

10. 发明授权

US06404717B1 Optical reproducing device and optical memory medium 失效
标题翻译：光学再现装置和光学存储介质
公开(公告)号：US06404717B1
公开(公告)日：2002-06-11
申请号：US09163516
申请日：1998-09-30
申请人： Tetsuya Okumura , Hiroshi Fuji , Shigemi Maeda
发明人： Tetsuya Okumura , Hiroshi Fuji , Shigemi Maeda
IPC分类号： G11B509
CPC分类号： G11B7/126 , G11B7/005 , G11B7/00745 , G11B11/10584 , G11B11/10595 , G11B20/10 , G11B27/3027 , G11B2220/2525
摘要： A magneto-optical disk reproducing device includes a clock producing circuit, which, on the basis of a reproducing signal from recorded marks recorded in a magneto-optical disk, produces a timing offset from peak positions of the reproducing signal; an A/D converter, which samples the reproducing signal in accordance with the timing, and outputs a reproducing signal quantity; and a short mark signal quantity averaging circuit and a long mark signal quantity averaging circuit, each of which averages a plurality of reproducing signal quantities. When projecting a light beam onto a magneto-optical disk, the magneto-optical disk reproducing device controls light quantity of the light beam on the basis of a ratio between the respective values outputted by the foregoing averaging circuits. By this means, the A/D converter is able to sample the reproducing signal at more timings than when a reproducing signal is detected at peak positions thereof, and the magneto-optical disk reproducing device can detect the foregoing ratio more precisely. Consequently, the magneto-optical disk can control the light quantity of the light beam more accurately.
摘要翻译：磁光盘再现装置包括时钟产生电路，其基于记录在磁光盘中的记录标记的再现信号，产生与再现信号的峰值位置的定时偏移; A / D转换器，其根据定时对再现信号进行采样，并输出再现信号量; 以及短标记信号量平均电路和长标记信号量平均电路，其中每个均衡多个再现信号量。当将光束投影到磁光盘上时，磁光盘再现装置基于由上述平均电路输出的各个值之间的比率来控制光束的光量。通过这种方式，A / D转换器能够比在其峰值位置处检测到再现信号时更多的定时对再现信号进行采样，并且磁光盘再现装置可以更精确地检测上述比率。因此，磁光盘可以更精确地控制光束的光量。

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