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1. 发明专利

JP2005158239A Optical disk apparatus, clock signal generation method, program, and control apparatus 审中-公开
标题翻译：光盘设备，时钟信号生成方法，程序和控制设备
公开(公告)号：JP2005158239A
公开(公告)日：2005-06-16
申请号：JP2004311600
申请日：2004-10-26
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： NAKAJIMA TAKESHI , MIYASHITA SEIJUN , KIMURA NAOHIRO
IPC分类号： G11B20/14 , G11B7/005
摘要： PROBLEM TO BE SOLVED: To provide an optical disk apparatus, a clock signal generation method, and a program, which detect a wobble signal from a reproduced signal of an optical disk and generate a clock signal in synchronism with the wobble signal, and a control apparatus for generating a clock signal.
SOLUTION: The optical disc apparatus is provided, which comprises a signal detection means for detecting a wobble signal from a reproduced signal of an optical disc, and a generation means for generating a clock signal in synchronization with the wobble signal. The generation means comprises: a first difference signal generation means for generating a first difference signal indicating a difference between a frequency of the wobble signal and a frequency of the clock signal; a period detection means for detecting a modulation period of the wobble signal based on the first difference signal; and an adjustment means for adjusting the frequency of the clock signal based on a predetermined signal other than the first difference signal during a modulation period, and for adjusting the frequency of the clock signal based on the first difference signal during a period other than the modulation period.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种光盘装置，时钟信号生成方法和程序，其从光盘的再生信号中检测摆动信号并与摆动信号同步地生成时钟信号，以及用于产生时钟信号的控制装置。解决方案：提供了一种光盘装置，其包括用于从光盘的再现信号检测摆动信号的信号检测装置，以及用于与摆动信号同步地产生时钟信号的产生装置。产生装置包括：第一差分信号产生装置，用于产生指示摆动信号的频率与时钟信号的频率之间的差异的第一差分信号; 周期检测装置，用于基于第一差分信号检测摆动信号的调制周期; 以及调整装置，用于在调制周期期间基于除了第一差分信号之外的预定信号调整时钟信号的频率，并且用于在调制之外的周期期间基于第一差分信号调整时钟信号的频率期。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2007134006A Recording method for optical disk device, and optical disk device 有权
标题翻译：光盘设备的记录方法和光盘设备
公开(公告)号：JP2007134006A
公开(公告)日：2007-05-31
申请号：JP2005328413
申请日：2005-11-14
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： WADA YASUHIRO , MIYASHITA SEIJUN
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide a recording method for an optical disk device by which a recording mark of a desired length can be formed correctly even when recording data in a high-density recording compatible optical disk such as a blue ray disk. SOLUTION: In the optimization process of a write strategy for deciding the pulse width of a top pulse 51, a last pulse or a cooling pulse among the group of emission pulses for forming one recording mark, when at least one decided pulse width of the top pulse 51, the last pulse, or the cooling pulse is less than an emission limit pulse width 52 capable of securing at least an emission amount necessary for forming a recording mark by an optical pickup, a pulse equal to or less than the emission limit pulse width 52 is changed to a predetermined pulse width. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于光盘装置的记录方法，即使在诸如蓝光盘的高密度记录兼容光盘中记录数据时也可以正确地形成期望长度的记录标记。解决方案：在用于确定顶部脉冲51的脉冲宽度的写入策略的优化处理中，用于形成一个记录标记的发射脉冲组中的最后脉冲或冷却脉冲当至少一个确定的脉冲宽度顶部脉冲51的最后脉冲或冷却脉冲小于能够通过光学拾取器至少确保形成记录标记所需的发射量的发射极限脉冲宽度52，等于或小于发光极限脉冲宽度52变为规定的脉冲宽度。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007109349A Digital information recording or reproducing apparatus and digital phase locked loop circuit 审中-公开
标题翻译：数字信息记录或复制设备和数字相位锁定环路
公开(公告)号：JP2007109349A
公开(公告)日：2007-04-26
申请号：JP2005301463
申请日：2005-10-17
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： NAKAJIMA TAKESHI , NAKADA KOHEI , MIYASHITA SEIJUN , OGURA YOICHI
IPC分类号： G11B20/14 , G11B20/10 , H03L7/08 , H03L7/087
摘要： PROBLEM TO BE SOLVED: To improve stability of pull-in time and pull-in operation of a PLL at the head of an RUB (recording unit block). SOLUTION: This apparatus includes a zero-cross detection means, a period counter which starts operation at the pass-through timing of the zero-cross detection means and outputs a counting value, and a phase error detector for acquisition which predicts zero-cross timing of a reproduction signal from a pass-through direction information output from the zero-cross detection means and the counting value and outputs a primary phase error. The zero-cross detection means detects the zero-cross point of the rising or falling edge of a specific pattern included in a preamble area, makes a period counter of a prescribed period from the detected zero-cross point operate, predicts the zero-cross point predicted from a specific pattern in the preamble area, and outputs a phase error for acquisition. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提高RUB（记录单元块）头部的PLL的拉入时间和拉入操作的稳定性。解决方案：该装置包括零交叉检测装置，在过零检测装置的通过定时开始运行的周期计数器，并输出计数值，以及用于采集的相位误差检测器，其预测为零 - 从过零检测装置输出的通过方向信息的再现信号的定时和计数值，并输出主相位误差。零交叉检测装置检测包括在前导码区域中的特定模式的上升沿或下降沿的零交叉点，使得从检测到的过零点操作的规定周期的周期计数器预测零交叉从前导区域中的特定模式预测的点，并输出用于采集的相位误差。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006302332A Recording and reproducing device 审中-公开
标题翻译：记录和复制设备
公开(公告)号：JP2006302332A
公开(公告)日：2006-11-02
申请号：JP2005117895
申请日：2005-04-15
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： FUJIMOTO KEISUKE , MIYASHITA SEIJUN
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To provide a recording pulse parameter adjusting method capable of shortening adjusting time and preventing unproductive recording deterioration by adjusting a recording pulse parameter about the most effective shortest recording mark shape in a recording and reproducing device for emitting laser beams onto a recording medium to record and reproduce information. SOLUTION: In a recording condition setting method of an optical disk which reads a recording pulse standard parameter, sets a recording pulse parameter of the recording and reproducing device and records and reproduces data in a recordable optical disk with the recording pulse standard parameter preset therein, especially, a parameter about the shortest recording mark shape is adjusted. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种记录脉冲参数调整方法，其能够缩短调整时间并通过在用于发射激光束的记录和再现装置中调整关于最有效的最短记录标记形状的记录脉冲参数来防止非生产性记录劣化到记录介质上以记录和再现信息。解决方案：在读取记录脉冲标准参数的光盘的记录条件设置方法中，设置记录和再现装置的记录脉冲参数，并用记录脉冲标准参数记录和再现可记录光盘中的数据特别地，调整关于最短记录标记形状的参数。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2004348942A Apparatus and method for controlling recording or reproduction, apparatus for performing recording or reproduction, and apparatus for identfying information recording medium 审中-公开
公开(公告)号：JP2004348942A
公开(公告)日：2004-12-09
申请号：JP2004132127
申请日：2004-04-27
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KOBAYASHI ISAO , MIYASHITA SEIJUN , SHOJI MAMORU , ISHIDA TAKASHI
IPC分类号： G11B20/10 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/095 , G11B7/125 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To provide the setting of an optimum recording and reproduction parameter obtained by taking into consideration both viewpoints of jitter and an error occurrence probability using a maximum likelihood decoding method. SOLUTION: Not only a recording and reproduction parameter is set so as to minimize jitter, but also the setting of a recording and reproduction parameter which makes an error occurrence probability minimum is adopted in a reproducing method that adopts the maximum likelihood decoding method. Recording and reproduction parameters X1 and X2 which are optimum to two types of evaluation indexes are acquired to calculate the average value of the recording and reproduction parameters X1 and X2 or a position obtained by dividing the range of X1 and X2 into a ratio a: b (a and b are integers). COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2003085764A Waveform equalizer and prml detector 审中-公开
标题翻译：波形均衡器和PRML检测器
公开(公告)号：JP2003085764A
公开(公告)日：2003-03-20
申请号：JP2001333945
申请日：2001-10-31
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： MIYASHITA SEIJUN , NAKAJIMA TAKESHI , MINAMINO JUNICHI , NAKAMURA ATSUSHI , KONISHI SHINICHI
IPC分类号： G11B20/10 , G11B7/005 , H04B3/06
摘要： PROBLEM TO BE SOLVED: To obtain an accurate equalization error and to accurately output a temporary decision value at the time of adaptive control of the coefficient of an FIR filter, even in the case of an asymmetrical reproduced waveform or even in a noise environment. SOLUTION: A waveform equalizer for equalizing the waveform of a reproduced signal obtained by reproducing a mark and a non-mark recorded on a recording medium is provided with a detection part which detects asymmetry of the reproduced signal, which is caused by physical shapes of the mark and the non-mark, and outputs a detection signal representative of the extent of asymmetry, a discrimination part which discriminates the mark and the non- mark on the basis of the reproduced signal to output a discrimination signal, and a selection part which calculates a first coefficient to be multiplied by the reproduced signal obtained by reproducing the mark and a second coefficient different from the first coefficient, which is to be multiplied by the reproduced signal obtained by reproducing the non-mark, on the basis of the detection signal outputted from the detection part and selects the first or second coefficient on the basis of the discrimination signal outputted from the discrimination part.
摘要翻译：要解决的问题：即使在非对称再现波形的情况下，甚至在噪声环境中，为了获得准确的均衡误差并且在FIR滤波器的系数的自适应控制时精确地输出临时判定值。解决方案：用于均衡通过再现记录在记录介质上的标记和非标记获得的再现信号的波形的波形均衡器设置有检测部分，其检测再现信号的不对称性，该再现信号是由并且输出表示不对称程度的检测信号，基于再现信号鉴别标记和非标记的鉴别部分，以输出鉴别信号;以及选择部分，其计算基于输出的检测信号，乘以与通过再现标记而获得的再现信号相乘的第一系数和不同于第一系数的第二系数，第二系数将与通过再现非标记而获得的再现信号相乘并根据从鉴别中输出的鉴别信号，选择第一或第二系数部分。

7. 发明专利

JP2008262611A Decoding method, decoding device and information reproduction device 审中-公开
标题翻译：解码方法，解码设备和信息再现设备
公开(公告)号：JP2008262611A
公开(公告)日：2008-10-30
申请号：JP2007102421
申请日：2007-04-10
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： FUJIMOTO KEISUKE , MIYASHITA SEIJUN , HINO YASUMORI
IPC分类号： G11B20/18 , G11B20/14 , H03M13/41
摘要： PROBLEM TO BE SOLVED: To solve the problem that in conventional PRML signal processing applied to a reproduction signal with a large waveform distortion, errors occur frequently, so that a signal having a satisfactory reproduction quality cannot be obtained.
SOLUTION: In comparison operation of a path metric in Viterbi decoding, the comparison is calculated by adding a predetermined offset value to a predetermined path metric for a path having no shortest Euclidean distance out of two paths which branch from a predetermined state and join again in the same state, thereby selecting a survival path. For the reproduction signal of large waveform distortion, the survival path can be selected in consideration of the influence of the distortion, so that stable decoding is achieved without an influence of a recording quality.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题为了解决在对具有大的波形失真的再现信号应用的常规PRML信号处理中经常发生错误的问题，因此不能获得令人满意的再现质量的信号。解决方案：在维特比解码中的路径度量的比较操作中，通过将预定偏移值与从预定状态分支的两条路径中没有最短欧几里德距离的路径的预定路径度量相加来计算比较，再次加入同一个州，从而选择一条生存之路。对于大波形失真的再现信号，可以考虑失真的影响来选择存活路径，从而在不影响记录质量的情况下实现稳定的解码。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2007280495A Method and device for controlling optical disk recording pulse 审中-公开
标题翻译：用于控制光盘记录脉冲的方法和装置
公开(公告)号：JP2007280495A
公开(公告)日：2007-10-25
申请号：JP2006104821
申请日：2006-04-06
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： FUJIMOTO KEISUKE , MIYASHITA SEIJUN , HINO YASUMORI , NAKAO MASAHITO , HORIUCHI TERUOKI
IPC分类号： G11B7/0045 , G11B7/125
CPC分类号： G11B7/0062
摘要： PROBLEM TO BE SOLVED: To provide a device and a method for adjusting recording and reproduction parameters which are adaptive to changes in a recording environment or a reproduction environment while shortening a recording/reproducing time including an adjustment time and preventing the deterioration of record with respect to a recording/reproducing device for recording/reproducing information by irradiating a recording medium with a laser beam. SOLUTION: The recording/reproducing time including the adjustment time can be shortened and a test recording area for the use can also be reduced by performing parameter adjustment while changing adjustment items of the recording/reproducing parameters according to changes in the recording/reproducing environments. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于调整记录和再现参数的装置和方法，其适应于记录环境或再现环境中的变化，同时缩短包括调整时间的记录/再现时间并防止劣化关于通过用激光束照射记录介质来记录/再现信息的记录/再现装置的记录。解决方案：可以缩短包括调整时间的记录/再现时间，并且还可以通过在根据记录/再现参数的变化改变记录/再现参数的调整项目的同时执行参数调整来减少使用的测试记录区域。复制环境。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007280492A Recording or reproducing device, method, program, and recording signal regulating device, method, program 审中-公开
标题翻译：记录或复制设备，方法，程序和记录信号调节设备，方法，程序
公开(公告)号：JP2007280492A
公开(公告)日：2007-10-25
申请号：JP2006104666
申请日：2006-04-05
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KOBAYASHI ISAO , MIYASHITA SEIJUN
IPC分类号： G11B7/0045 , G11B7/125 , G11B20/18
CPC分类号： G11B7/0062
摘要： PROBLEM TO BE SOLVED: To reduce error rates when recording information on an information recording medium, and also optimize the recording parameter conditions for stabilizing clock generation. SOLUTION: The position displacements of recorded signals from their ideal edge positions are detected at beginning and end part of the recorded signals according to the recording pattern based on the digital signals and decoded results generated from the signals reproduced from an information recording medium, and the shape of the above recording signals is adjusted. COPYRIGHT: (C)2008,JPO&INPIT

10. 发明专利

JP2007134041A Prml detector 有权
标题翻译： PRML检测器
公开(公告)号：JP2007134041A
公开(公告)日：2007-05-31
申请号：JP2006345883
申请日：2006-12-22
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： MIYASHITA SEIJUN , NAKAJIMA TAKESHI , MINAMINO JUNICHI , NAKAMURA ATSUSHI , KONISHI SHINICHI
IPC分类号： G11B20/10 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To find an accurate equalizing error and accurately output a temporary judgment value for adaptively controlling a coefficient of an FIR filter, even with an asymmetric reproduction waveform, or under a noisy environment.
SOLUTION: A PRML detector includes a waveform equalizer for equalizing a waveform of a reproduction signal from a recording medium, and a decoder for generating binary-coded data of the reproduction signal based on the waveform equalized by the waveform equalizer. Based on a target value judger for determining a target value for equalizing based on a temporary data string output from the decoder, an output from an adder of the equalizer, and the target value determined by the target value judger; a predetermined coefficient of the waveform equalizer is set.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了找到精确的均衡误差，并且即使使用不对称再生波形，或者在嘈杂的环境下，也能够准确地输出用于自适应地控制FIR滤波器的系数的临时判断值。解决方案：PRML检测器包括用于均衡来自记录介质的再现信号的波形的波形均衡器，以及用于基于由波形均衡器均衡的波形来生成再现信号的二进制编码数据的解码器。基于用于基于从解码器输出的临时数据串确定用于均衡的目标值的目标值判断器，来自均衡器的加法器的输出和由目标值判定器确定的目标值; 设置波形均衡器的预定系数。版权所有（C）2007，JPO＆INPIT

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