公开(公告)号：US20060083146A1

公开(公告)日：2006-04-20

申请号：US11059683

申请日：2005-02-17

申请人： Fumio Isshiki ,  Koichi Watanabe ,  Kenichi Shimada ,  Takahiro Kurokawa

发明人： Fumio Isshiki ,  Koichi Watanabe ,  Kenichi Shimada ,  Takahiro Kurokawa

IPC分类号： G11B7/135

CPC分类号： G11B7/131 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

摘要： For optical disk apparatus compatible with multiple standards, employing multiple source beams with different wavelengths, less costly implementations of the photodetecting optics section and associated circuitry are presented. A photodetector plane dedicated to RF signal detection is provided. By bandwidth combining an RF signal detected by this plane is with another signal from other photodetector planes, S/N ratio is improved. For beam splitting, diffraction gratings are used and adjustment precision requirement is relaxed greatly. AC amplifiers can be used as RF photocurrent amplifiers.

摘要翻译： 对于与多种标准兼容的光盘装置，采用具有不同波长的多个源光束，提供了光检测光学部件和相关电路的成本较低的实施方式。 提供专用于RF信号检测的光检测器平面。 通过将由该平面检测到的RF信号的带宽与来自其它光电检测器平面的另一信号组合，提高S / N比。 对于分束，使用衍射光栅，并且大大放宽了调整精度要求。 交流放大器可用作RF光电流放大器。

公开(公告)号：US07978576B2

公开(公告)日：2011-07-12

申请号：US12760935

申请日：2010-04-15

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B15/52

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A power adjustment method in which a modulation index is calculated from reproduced signals of patterns recorded by irradiating light onto an optical information recording medium with a recording power varied and an optimum power of irradiation light is set up using the modulation index. The power adjustment method includes calculating an optimum value PcO of a predetermined correction term Pc using a relation of a value obtained by subtracting the predetermined correction term Pc from the recording power and the modulation index, finding a value Pth of the recording power at which the modulation index becomes substantially zero in the relation of the value obtained by subtracting the optimum value PcO from the recording power and the modulation index, and setting up a value obtained by multiplying the value of Pth by a predetermined constant as a recording power of each of the recording patterns.

摘要翻译： 一种功率调整方法，其中根据通过将光照射到记录功率变化的光信息记录介质上记录的图案的再现信号来计算调制指数，并且使用调制指数建立照射光的最佳功率。 功率调整方法包括使用通过从记录功率减去预定校正项Pc和调制指数获得的值的关系来计算预定校正项Pc的最佳值PcO，找到记录功率的记录功率的值Pth， 调制指数在通过从记录功率减去最佳值PcO而获得的值与调制指数之间的关系基本上为零，并且将通过将Pth的值乘以预定常数获得的值作为每个的记录功率 录音模式。

公开(公告)号：US07751288B2

公开(公告)日：2010-07-06

申请号：US11704352

申请日：2007-02-09

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B15/52

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A write power adjustment method and optical read/write apparatus for accurate optimum write power setup. Different levels of write power Pwm are used to perform a test write and calculate a modulation Mm corresponding to each level of write power Pwm. Different write power compensated values Pcn are used to calculate an evaluated value Smn=Mm×(Pwm−Pcn). Pcn that maximizes the linearity of the relationship between compensated write power (Pwm−Pcn) and evaluated value Smn is determined as an optimum write power compensated value PcO. Compensated write power PthO that provides a modulation of zero, that is, an evaluated value SmO of zero, when the relationship between compensated write power (Pwm−PcO) for PcO and evaluated value SmO is subjected to linear approximation is determined. PthO and optimum write power compensated value PcO are used to calculate a write power threshold Pth=PthO+PcO. A predetermined calculation is performed on Pth to determine optimum write power Popt. In contrast to a conventional write power adjustment method (κ method), the present invention makes it possible to accurately adjust for the optimum write power even when the optical disc's write power Pwm-to-evaluated value M×Pw relationship is not linear or its modulation M varies.

摘要翻译： 一种写入功率调整方法和光学读/写装置，用于精确的最佳写入功率设置。 使用不同级别的写入功率Pwm进行测试写入，并计算与写入功率Pwm对应的调制Mm。 使用不同的写功率补偿值Pcn来计算评估值Smn = Mm×（Pwm-Pcn）。 将补偿写入功率（Pwm-Pcn）与评估值Smn之间的关系的线性度最大化的Pcn被确定为最佳写入功率补偿值PcO。 确定当PcO的补偿写入功率（Pwm-PcO）与评估值SmO之间的关系经受线性近似时，提供零调制的补偿写入功率PthO，即评估值SmO为零。 PthO和最佳写功率补偿值PcO用于计算写功率阈值Pth = PthO + PcO。 在Pth上执行预定的计算以确定最佳写入功率Popt。 与传统的写入功率调整方法（＆kgr;方法）相反，即使当光盘的写入功率Pwm至评估值M×Pw关系不是线性时，本发明也可以精确地调整最佳写入功率， 其调制M变化。

公开(公告)号：US20100195459A1

公开(公告)日：2010-08-05

申请号：US12760935

申请日：2010-04-15

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B19/00

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A power adjustment method in which a modulation index is calculated from reproduced signals of patterns recorded by irradiating light onto an optical information recording medium with a recording power varied and an optimum power of irradiation light is set up using the modulation index. The power adjustment method includes calculating an optimum value PcO of a predetermined correction term Pc using a relation of a value obtained by subtracting the predetermined correction term Pc from the recording power and the modulation index, finding a value Pth of the recording power at which the modulation index becomes substantially zero in the relation of the value obtained by subtracting the optimum value PcO from the recording power and the modulation index, and setting up a value obtained by multiplying the value of Pth by a predetermined constant as a recording power of each of the recording patterns.

摘要翻译： 一种功率调整方法，其中根据通过将光照射到记录功率变化的光信息记录介质上记录的图案的再现信号来计算调制指数，并且使用调制指数建立照射光的最佳功率。 功率调整方法包括使用通过从记录功率减去预定校正项Pc和调制指数获得的值的关系来计算预定校正项Pc的最佳值PcO，找到记录功率的记录功率的值Pth， 调制指数在通过从记录功率减去最佳值PcO而获得的值与调制指数之间的关系基本上为零，并且将通过将Pth的值乘以预定常数获得的值作为每个的记录功率 录音模式。

公开(公告)号：US20060114777A1

公开(公告)日：2006-06-01

申请号：US11192082

申请日：2005-07-29

申请人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

发明人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

IPC分类号： G11B5/09

CPC分类号： G11B7/127 ,  G11B7/1263 ,  G11B7/128

摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.

公开(公告)号：US20070070855A1

公开(公告)日：2007-03-29

申请号：US11340563

申请日：2006-01-27

申请人： Koichi Watanabe ,  Takahiro Kurokawa

发明人： Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B20/10

CPC分类号： G11B7/0062

摘要： A frequency characteristics compensation method that can be applied to various waveforms (strategies). When determining the amount of frequency compensation, a deteriorated part by frequency characteristics is compensated for with respect to the difference between the pulse power to be compensated and the power level immediately before it. The present invention can also be applied to variations in the performance, aged deterioration, and temperature characteristics.

摘要翻译： 可应用于各种波形（策略）的频率特性补偿方法。 当确定频率补偿量时，通过频率特性的劣化部分相对于要补偿的脉冲功率与紧邻的功率之间的差异来补偿。 本发明还可以应用于性能，老化劣化和温度特性的变化。

公开(公告)号：US20090154326A1

公开(公告)日：2009-06-18

申请号：US12379217

申请日：2009-02-17

申请人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

发明人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

IPC分类号： G11B7/00

CPC分类号： G11B7/127 ,  G11B7/1263 ,  G11B7/128

摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.

摘要翻译： 这里公开了能够容易地减少激光噪声的数据记录和读取设备。 首先，获得当从主体光盘读取数据时能够降低激光噪声的激光束源。 能够在激光之前设置能够以电压变化激光衰减的调制器，从而可以在写入时降低激光功率而降低从光盘读取数据时的激光噪声。

公开(公告)号：US07663994B2

公开(公告)日：2010-02-16

申请号：US11340563

申请日：2006-01-27

申请人： Koichi Watanabe ,  Takahiro Kurokawa

发明人： Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0062

摘要： A frequency characteristics compensation method that can be applied to various waveforms (strategies). When determining the amount of frequency compensation, a deteriorated part by frequency characteristics is compensated for with respect to the difference between the pulse power to be compensated and the power level immediately before it. The present invention can also be applied to variations in the performance, aged deterioration, and temperature characteristics.

摘要翻译： 可应用于各种波形（策略）的频率特性补偿方法。 当确定频率补偿量时，通过频率特性的劣化部分相对于要补偿的脉冲功率与紧邻的功率之间的差异来补偿。 本发明还可以应用于性能，老化劣化和温度特性的变化。

公开(公告)号：US07502302B2

公开(公告)日：2009-03-10

申请号：US11192082

申请日：2005-07-29

申请人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

发明人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

IPC分类号： G11B7/00

CPC分类号： G11B7/127 ,  G11B7/1263 ,  G11B7/128

摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.

公开(公告)号：US08626043B2

公开(公告)日：2014-01-07

申请号：US13296783

申请日：2011-11-15

申请人： Tetsuji Okamoto ,  Atsushi Ogihara ,  Koichi Watanabe ,  Shuichi Nishide ,  Wataru Suzuki ,  Atsuyuki Kitamura ,  Masahiro Sato

发明人： Tetsuji Okamoto ,  Atsushi Ogihara ,  Koichi Watanabe ,  Shuichi Nishide ,  Wataru Suzuki ,  Atsuyuki Kitamura ,  Masahiro Sato

IPC分类号： G03G15/01

CPC分类号： G03G15/167

摘要： An image forming apparatus includes: an image carrier that is rotatably arranged and carries an image on an outer circumferential surface thereof; a transfer member that is rotatably arranged to face the image carrier and transfers the image carried on the image carrier onto a sheet held between the transfer member and the image carrier; a leading edge gripping member that is secured to the transfer member and grips a leading edge side of the sheet in a transport direction thereof on an outer circumferential surface of the transfer member; and a trailing edge holding member that is arranged to be rotatable around the transfer member, holds a trailing edge side of the sheet in the transport direction thereof between the trailing edge holding member and the outer circumferential surface of the transfer member, and bends to release the trailing edge side of the sheet in the transport direction thereof.

摘要翻译： 图像形成装置包括：图像载体，其被可旋转地布置并在其外周表面上承载图像; 转印构件，其可旋转地布置成面对图像载体并将承载在图像载体上的图像转印到保持在转印构件和图像载体之间的纸张上; 前缘把持部件固定在转印部件上，并且在转印部件的外周面上沿着输送方向夹持纸张的前端侧; 和后缘保持构件，该后缘保持构件布置成可围绕传送构件旋转，将片材的后缘侧沿其传送方向保持在后缘保持构件和传送构件的外周表面之间，并弯曲以释放 片材的沿其输送方向的后缘侧。