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    • 3. 发明授权
    • Data transmitting method and data transmitting apparatus
    • 数据发送方法和数据发送装置
    • US08284856B2
    • 2012-10-09
    • US12280210
    • 2007-02-13
    • Yoichi SatoTetsuya HiguchiMasahiro Murakawa
    • Yoichi SatoTetsuya HiguchiMasahiro Murakawa
    • H04L27/00
    • H04L25/03044H04L27/38
    • A serial-parallel converter/encoder unit 11 inputs a transmission symbol data at a transmission symbol rate that is one-Nth of a base-point symbol rate. A precoder/collator 13 creates a transmission symbol waveform at the base-point symbol rate. The transmission symbol waveform becomes a transmission signal after passing through a roll-off filter 14 with a band corresponding to the base-point symbol rate and a modulator 15. A reception signal demodulated by a demodulator 33 is input to a fractionally-spaced equalizer 38 that operates at the base-point symbol rate and is forcibly equalized at the transmission symbol rate by using a reference signal. A level of a signal output from the fractionally-spaced equalizer 38 at the transmission symbol rate is determined by a level determining unit 39 and becomes a reception symbol data by a sawtooth-function output unit 40.
    • 串行/并行转换器/编码器单元11以基点符号率的九分之一的传输符号速率输入传输符号数据。 预编码器/整理器13以基点符号率创建发送符号波形。 发送符号波形在通过具有与基点符号率对应的频带的滚降滤波器14和调制器15之后成为发送信号。由解调器33解调的接收信号被输入到分数间隔的均衡器38 其以基点符号速率操作,并且通过使用参考信号以传输符号速率被强制均衡。 由等级间隔均衡器38以传输符号速率输出的信号电平由电平确定单元39确定,并由锯齿波功能输出单元40变成接收符号数据。
    • 4. 发明申请
    • DATA TRANSMITTING METHOD AND DATA TRANSMITTING APPARATUS
    • 数据传输方法和数据传输设备
    • US20100061441A1
    • 2010-03-11
    • US12280210
    • 2007-02-13
    • Yoichi SatoTetsuya HiguchiMasahiro Murakawa
    • Yoichi SatoTetsuya HiguchiMasahiro Murakawa
    • H04L27/01H04L27/00
    • H04L25/03044H04L27/38
    • A serial-parallel converter/encoder unit 11 inputs a transmission symbol data at a transmission symbol rate that is one-Nth of a base-point symbol rate. A precoder/collator 13 creates a transmission symbol waveform at the base-point symbol rate. The transmission symbol waveform becomes a transmission signal after passing through a roll-off filter 14 with a band corresponding to the base-point symbol rate and a modulator 15. A reception signal demodulated by a demodulator 33 is input to a fractionally-spaced equalizer 38 that operates at the base-point symbol rate and is forcibly equalized at the transmission symbol rate by using a reference signal. A level of a signal output from the fractionally-spaced equalizer 38 at the transmission symbol rate is determined by a level determining unit 39 and becomes a reception symbol data by a sawtooth-function output unit 40.
    • 串行/并行转换器/编码器单元11以基点符号率的九分之一的传输符号速率输入传输符号数据。 预编码器/整理器13以基点符号率创建发送符号波形。 发送符号波形在通过具有与基点符号率对应的频带的滚降滤波器14和调制器15之后成为发送信号。由解调器33解调的接收信号被输入到分数间隔的均衡器38 其以基点符号速率操作,并且通过使用参考信号以传输符号速率被强制均衡。 由等级间隔均衡器38以传输符号速率输出的信号电平由电平确定单元39确定,并由锯齿波功能输出单元40变成接收符号数据。
    • 5. 发明申请
    • PHASE CORRECTION ELEMENT AND OPTICAL HEAD DEVICE
    • 相位校正元件和光学头设备
    • US20100020671A9
    • 2010-01-28
    • US11045088
    • 2005-01-31
    • Yoshiharu OoiMasahiro MurakawaHiromasa SatoMasao Miyamura
    • Yoshiharu OoiMasahiro MurakawaHiromasa SatoMasao Miyamura
    • G11B7/135
    • G11B7/1367G02B27/0037G02B27/4238G02B27/4261G11B7/1275G11B7/1353G11B7/13922G11B2007/0006
    • The present invention provides a phase correction element which can be used for recording and/or reproducing an information of three types of optical disks for HD, DVD and CD by employing a single objective lens for HD, and an optical head device. The phase correction element 100 of present invention comprises a first phase correction layer 10A formed in a region of numerical aperture NA2, and a first phase plate 30A integrally formed; the first phase correction layer 10A comprising a concavo-convex portion having a rotational symmetry with respect to the optical axis of incident light and having a cross-sectional shape of a saw-tooth-form or a saw-tooth-form whose convex portions are each approximated by a step form; the first phase plate 30A generating a birefringent phase difference of about an odd number times of π/2 for linearly polarized light having a wavelength of λ1; and the phase correction element 100 having a function of not changing a transmitted wavefront of the wavelength of λ1 and changing a transmitted wavefront of the wavelength of λ2 or transmitted wavefront of both wavelengths of λ2 and λ3 when three types of incident light in a λ1=410 nm wavelength band, a λ2=650 nm wavelength band and a λ3=780 nm wavelength band respectively, are incident.
    • 本发明提供了一种相位校正元件,其可用于通过采用用于HD的单个物镜和光学头装置来记录和/或再现用于HD,DVD和CD的三种类型的光盘的信息。 本发明的相位校正元件100包括形成在数值孔径NA2的区域中的第一相位校正层10A和一体形成的第一相位板30A; 第一相位校正层10A包括相对于入射光的光轴具有旋转对称性并具有锯齿形或锯齿形的横截面形状的凹凸部,其凸部为 每个都用步骤形式近似; 第一相位板30A产生波长λ1的线偏振光的π/ 2奇数倍的双折射相位差; 并且相位校正元件100具有不改变λ1的波长的发射波前的功能,并且当λ1= 3的三种类型的入射光被改变时,改变λ2和λ3的两个波长的λ2波长或透射波前的透射波前的功能, 410nm波长带,λ2= 650nm波长带和λ3= 780nm波长带。
    • 6. 发明申请
    • Parameter Adjustment Device
    • 参数调整装置
    • US20090138417A1
    • 2009-05-28
    • US11887620
    • 2006-04-03
    • Masahiro MurakawaKeiichi ItoShunsuke Baba
    • Masahiro MurakawaKeiichi ItoShunsuke Baba
    • G06N3/12
    • G06F17/5036G06N3/126
    • Efficient and high-accuracy parameter adjustment is performed by applying a genetic algorithm to a parameter adjustment such as a physical model of a transistor and so on. A parameter adjusting device includes a device generating new parameter genes by an initial population generating device and a special crossover processing by a Latin hyper square method. Also, a normalization device is provided for applying to parameters which are real numbers. Moreover, for example, to exactly meet a specific property of the transistor (MOSFET), an evaluation device which evaluates a parameter in consideration of a log scale, is provided. According to the above-mentioned structure, the genetic algorithm can be applied to the parameter adjustment with a large number of parameters such as the physical model of the transistor and so on, so that a parameter group can be determined with a high degree of accuracy within a short time.
    • 通过对诸如晶体管的物理模型等的参数调整应用遗传算法来执行高效且高精度的参数调整。 参数调整装置包括通过初始种群生成装置生成新参数基因的装置和通过拉丁超平方法的特殊交叉处理。 而且,提供归一化装置以应用作为实数的参数。 此外,例如,为了精确地满足晶体管(MOSFET)的特定性质,提供了考虑对数标度来评估参数的评估装置。 根据上述结构,遗传算法可以应用于诸如晶体管的物理模型等大量参数的参数调整,使得可以以高精度确定参数组 在短时间内。
    • 7. 发明申请
    • Phase correction element and optical head device
    • 相位校正元件和光头设备
    • US20050226122A1
    • 2005-10-13
    • US11045088
    • 2005-01-31
    • Yoshiharu OoiMasahiro MurakawaHiromasa SatoMasao Miyamura
    • Yoshiharu OoiMasahiro MurakawaHiromasa SatoMasao Miyamura
    • G02B5/28G02B5/18G02B5/30G02B13/00G11B7/00G11B7/135
    • G11B7/1367G02B27/0037G02B27/4238G02B27/4261G11B7/1275G11B7/1353G11B7/13922G11B2007/0006
    • The present invention provides a phase correction element which can be used for recording and/or reproducing an information of three types of optical disks for HD, DVD and CD by employing a single objective lens for HD, and an optical head device. The phase correction element 100 of present invention comprises a first phase correction layer 10A formed in a region of numerical aperture NA2, and a first phase plate 30A integrally formed; the first phase correction layer 10A comprising a concavo-convex portion having a rotational symmetry with respect to the optical axis of incident light and having a cross-sectional shape of a saw-tooth-form or a saw-tooth-form whose convex portions are each approximated by a step form; the first phase plate 30A generating a birefringent phase difference of about an odd number times of π/2 for linearly polarized light having a wavelength of λ1; and the phase correction element 100 having a function of not changing a transmitted wavefront of the wavelength of λ1 and changing a transmitted wavefront of the wavelength of λ2 or transmitted wavefront of both wavelengths of λ2 and λ3 when three types of incident light in a λ1=410 nm wavelength band, a λ2=650 nm wavelength band and a λ3=780 nm wavelength band respectively, are incident.
    • 本发明提供了一种相位校正元件,其可用于通过采用用于HD的单个物镜和光学头装置来记录和/或再现用于HD,DVD和CD的三种类型的光盘的信息。 本发明的相位校正元件100包括形成在数值孔径NA 2 2的区域中的第一相位校正层10A和整体形成的第一相位板30A; 第一相位校正层10A包括相对于入射光的光轴具有旋转对称性并具有锯齿形或锯齿形的横截面形状的凹凸部,其凸部 各自以阶梯形式近似; 第一相位板30A对波长为λ1的线偏振光产生大约奇数倍的π/ 2的双折射相位差; 并且相位校正元件100具有不改变λ1波长的发射波前的功能,并且改变λ2的波长的发射波前或发射波前的发射波前 当λλ1= 410nm波长带中的三种类型的入射光,λλ> 2nm波长的λ2波长和λ3波长时, 2λ= 650nm波长带和λ3 3 = 780nm波长带。