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51. 发明授权

US06483791B1 Laser drive integrated circuit and optical disk apparatus using the same 有权
标题翻译：激光驱动集成电路和使用其的光盘装置
公开(公告)号：US06483791B1
公开(公告)日：2002-11-19
申请号：US09239516
申请日：1999-01-29
申请人： Akihiro Asada , Hideo Ohnuki , Masaaki Kurebayashi , Yasuhito Tanaka , Toshimitsu Kaku , Takashi Hoshino , Hidehiko Kando
发明人： Akihiro Asada , Hideo Ohnuki , Masaaki Kurebayashi , Yasuhito Tanaka , Toshimitsu Kaku , Takashi Hoshino , Hidehiko Kando
IPC分类号： G11B70045
CPC分类号： G11B7/126 , G11B7/0062 , G11B2007/0006
摘要： A laser drive integrated circuit and an optical disk apparatus using the laser drive integrated circuit for forming high-density marks. The optical disk apparatus has a drive waveform information storage unit for storing at least one information of the drive waveform for driving a laser diode in response to a binary recording signal recorded in a recording medium and a drive waveform decoder for decoding the drive waveform based on the information stored in the drive waveform information storage unit. The recording strategy can be changed in accordance with the variations and fluctuations of recording media or the characteristics of the recording media, while at the same time reducing the number of signal lines of flexible wiring and alleviating the effect of the signal distortion.
摘要翻译：激光驱动集成电路和使用激光驱动集成电路形成高密度标记的光盘装置。光盘装置具有驱动波形信息存储单元，用于响应于记录在记录介质中的二进制记录信号存储用于驱动激光二极管的驱动波形的至少一个信息，以及驱动波形解码器，用于基于存储在驱动波形信息存储单元中的信息。可以根据记录介质的变化和波动或记录介质的特性改变记录策略，同时减少柔性布线的信号线数量并减轻信号失真的影响。

52. 发明授权

US06301211B1 Information recording/reproducing apparatus 失效
标题翻译：信息记录/重放装置
公开(公告)号：US06301211B1
公开(公告)日：2001-10-09
申请号：US09291280
申请日：1999-04-14
申请人： Norimoto Ichikawa , Hiroyuki Minemura , Toshimitsu Kaku , Hisataka Sugiyama
发明人： Norimoto Ichikawa , Hiroyuki Minemura , Toshimitsu Kaku , Hisataka Sugiyama
IPC分类号： G11B700
CPC分类号： G11B7/0908 , G11B7/005 , G11B7/007 , G11B7/00718
摘要： An information recording/reproducing apparatus for recording/reproducing information into and from an optical information recording medium, wherein the information of a plurality of sectors is recorded as one recording unit. A recoding area of the recording medium is constructed with a plurality of zones and each zone is different in a sector number per one round of track. A number of the recording units for conducting a verify control for each of the zones is changed on the basis of a number of sectors per one round of track and a number of sectors for turning back by the one round of track.
摘要翻译：一种用于将光信息记录介质中的信息记录/再现的信息记录/再现装置，其中将多个扇区的信息记录为一个记录单元。记录介质的记录区域由多个区域构成，并且每个区域每个轨道的扇区数不同。用于对每个区域进行验证控制的多个记录单元基于每一轮轨道的扇区数和通过一轮轨道返回的扇区数量而改变。

53. 发明授权

US5497361A Information reproducing apparatus with a DC level correcting capability 失效
标题翻译：具有DC电平校正功能的信息再现装置
公开(公告)号：US5497361A
公开(公告)日：1996-03-05
申请号：US155228
申请日：1993-11-22
申请人： Seiichi Mita , Toru Kawashima , Masanori Matsuzaki , Toshimitsu Kaku , Hiroyuki Tsuchinaga
发明人： Seiichi Mita , Toru Kawashima , Masanori Matsuzaki , Toshimitsu Kaku , Hiroyuki Tsuchinaga
IPC分类号： G11B11/105 , G11B20/10 , G11B7/00
CPC分类号： G11B11/10597 , G11B20/10009
摘要： An information reproducing apparatus is capable of stably and correctly binarizing a signal reproduced from a recording medium, such as an optical disk, even if the reproduced signal contains a fluctuation of its low frequency component. The reproduced signal is replaced by an AC signal in a period other than a period during which the reproduced signal is to be demodulated so that DC fluctuation of the reproduced signal is reduced to thereby stably and correctly binarize the reproduced signal.
摘要翻译：即使再现信号包含其低频分量的波动，信息再现装置能够稳定地并且正确地二值化从诸如光盘的记录介质再现的信号。再生信号在再生信号要被解调的周期以外的周期中被AC信号代替，使得再现信号的DC波动被减小，从而稳定且正确地二值化再生信号。

54. 发明授权

US08144559B2 Multiple pulse recording method with 3-valued power levels 失效
标题翻译：具有3值功率电平的多脉冲记录方法
公开(公告)号：US08144559B2
公开(公告)日：2012-03-27
申请号：US11761399
申请日：2007-06-12
申请人： Hiroyuki Minemura , Tsuyoshi Toda , Toshimitsu Kaku
发明人： Hiroyuki Minemura , Tsuyoshi Toda , Toshimitsu Kaku
IPC分类号： G11B5/09
CPC分类号： G11B7/00456 , G11B7/1267
摘要： Pulses modulated between the erase power and the bottom power are used instead of cooling pulses for an optical disk medium that needs a write strategy with 4-valued power levels. Consequently, pulse instruction lines for the cooling pulses, power level instruction lines, and corresponding current source within the laser driver can be omitted. Decrease in size and lower power consumption can be accomplished.
摘要翻译：使用在擦除功率和底部功率之间调制的脉冲来代替需要具有4值功率电平的写入策略的光盘介质的冷却脉冲。因此，可以省略用于冷却脉冲，功率电平指令线和激光驱动器内的对应电流源的脉冲指令线。可以实现尺寸减小和功耗降低。

55. 发明授权

US07924664B2 Optical disk apparatus, optical head, and detection signal processing method thereof 有权
标题翻译：光盘装置，光头及其检测信号处理方法
公开(公告)号：US07924664B2
公开(公告)日：2011-04-12
申请号：US10795171
申请日：2004-03-05
申请人： Toshimitsu Kaku
发明人： Toshimitsu Kaku
IPC分类号： G11B7/12
CPC分类号： G11B7/1263
摘要： Disclosed herein is a technology that enables stable and high-speed writing and/or reading in an optical disk apparatus. The optical disk apparatus has an optical head that includes a first circuit for driving a laser diode, a second circuit for sampling and holding analog electric signals that are based on reflected laser light from the optical disk, and a third circuit for converting said signals being sampled and held into digital signals. Signals digitized in the optical head are transmitted to the apparatus body side using time-division multiplexing. The first circuit, the second circuit, and the third circuit are constructed on a single substrate or in a single IC.
摘要翻译：本文公开了一种能够在光盘装置中进行稳定且高速的写入和/或读取的技术。光盘装置具有光头，该光头包括用于驱动激光二极管的第一电路，用于采样和保持基于来自光盘的反射激光的模拟电信号的第二电路，以及用于转换所述信号的第三电路，采样并保持数字信号。在光头中数字化的信号通过时分复用传输到装置本体侧。第一电路，第二电路和第三电路构造在单个衬底或单个IC中。

56. 发明授权

US06754144B1 Optical information recording/reproducing apparatus 失效
标题翻译：光信息记录/重放装置
公开(公告)号：US06754144B1
公开(公告)日：2004-06-22
申请号：US09506272
申请日：2000-02-17
申请人： Tetsuya Fushimi , Toshimitsu Kaku , Hisataka Sugiyama
发明人： Tetsuya Fushimi , Toshimitsu Kaku , Hisataka Sugiyama
IPC分类号： G11B700
CPC分类号： G11B7/0901 , G11B7/24082
摘要： In an optical information recording/reproducing apparatus, in which two sets of circuits (including a comparator 104 and a time counting device 105 (i.e., pulse width detector), and a comparator 110 and a time counting device 111 (i.e., pulse width detector)) are provided for detecting that the fluctuation larger than a comparison level continues in the TE signal for a time period, each being set at the respective comparison level and the time duration, differently, thereby the operation of write or erase onto an optical disc 101 is stopped even if only one of them is detected. Also, a position or location information in the PID portion to be reproduced, being outputted from a PID register 107, and a location information which is read out by the PID decoder 106 are compared by a comparator 108, thereby stopping the operation of write or erase onto the optical disc 101 if they are inconsistent with.
摘要翻译：在其中包括两组电路（包括比较器104和时间计数装置105（即，脉冲宽度检测器））以及比较器110和时间计数装置111（即，脉冲宽度检测器）的光学信息记录/再现装置中））被提供用于检测大于比较电平的波动在TE信号中持续一段时间，每个时间段被设置在相应的比较电平和持续时间，因此写入或擦除到光盘上的操作即使只检测到其中一个，也停止101。此外，由PID寄存器107输出的要再现的PID部分中的位置或位置信息和由PID解码器106读出的位置信息由比较器108进行比较，从而停止写入或如果光盘101不一致则擦去光盘101。

57. 发明授权

US06674702B2 Laser drive integrated circuit and optical disk apparatus using the same 有权
标题翻译：激光驱动集成电路和使用其的光盘装置
公开(公告)号：US06674702B2
公开(公告)日：2004-01-06
申请号：US10270448
申请日：2002-10-15
申请人： Akihiro Asada , Hideo Ohnuki , Masaaki Kurebayashi , Yasuhito Tanaka , Toshimitsu Kaku , Takashi Hoshino , Hidehiko Kando
发明人： Akihiro Asada , Hideo Ohnuki , Masaaki Kurebayashi , Yasuhito Tanaka , Toshimitsu Kaku , Takashi Hoshino , Hidehiko Kando
IPC分类号： G11B7125
CPC分类号： G11B7/126 , G11B7/0062 , G11B2007/0006
摘要： A laser drive circuit includes a first current supply unit which supplies a first drive current to a first laser diode based on a drive waveform signal generated by a drive waveform generating unit, a second current supply unit which supplies a second drive current to a second laser diode based on the drive waveform signal generated by the drive waveform generating unit, and a switching unit which selectively supplies the drive waveform signal generated by the drive waveform generating unit to one of the first current supply unit and the second current supply unit. The drive waveform generating unit may be part of the laser drive circuit, or may be separate from the laser drive circuit, and may include a drive waveform information storage unit which stores a recording strategy according to a type of disk.
摘要翻译：激光驱动电路包括：第一电流供应单元，其基于由驱动波形发生单元产生的驱动波形信号向第一激光二极管提供第一驱动电流;第二电流供应单元，其将第二驱动电流提供给第二激光器基于由驱动波形生成单元生成的驱动波形信号的二极管，以及切换单元，其选择性地将驱动波形生成单元生成的驱动波形信号提供给第一电流供给单元和第二电流供给单元中的一个。驱动波形生成单元可以是激光驱动电路的一部分，也可以与激光驱动电路分离，并且可以包括驱动波形信息存储单元，其存储根据盘的类型的记录策略。

58. 发明授权

US06654328B2 Information recording/reproducing apparatus with laser driver 失效
标题翻译：具有激光驱动器的信息记录/再现装置
公开(公告)号：US06654328B2
公开(公告)日：2003-11-25
申请号：US10143933
申请日：2002-05-14
申请人： Toshimitsu Kaku , Akihiro Asada , Takashi Hoshino
发明人： Toshimitsu Kaku , Akihiro Asada , Takashi Hoshino
IPC分类号： G11B700
CPC分类号： G11B7/00456 , G11B7/126
摘要： A laser driver for driving a semiconductor laser for use in recording information by irradiating light on an information recording medium includes a device, including a PLL circuit, for obtaining (1) information modulated in accordance with a predetermined rule and (2) a clock signal, and outputting a recording current signal corresponding to a modulation signal representing the modulated information through the PLL circuit. The PLL circuit oscillates at a high frequency in synchronism with the clock signal. The laser driver further includes a PLL unlock detection circuit for detecting an oscillating condition of the PLL circuit, and for outputting a detection signal indicative of the oscillating condition of the PLL circuit outside the laser driver as a monitor signal.
摘要翻译：用于驱动用于通过在信息记录介质上照射光来记录信息的半导体激光器的激光驱动器包括：包括PLL电路的装置，用于获得（1）根据预定规则调制的信息;以及（2）时钟信号并且通过PLL电路输出与表示调制信息的调制信号相对应的记录电流信号。 PLL电路与时钟信号同步地以高频振荡。激光驱动器还包括用于检测PLL电路的振荡状态的PLL解锁检测电路，并且用于将表示激光驱动器外部的PLL电路的振荡状态的检测信号作为监视信号输出。

59. 发明授权

US06552987B1 Optical disk apparatus wherein recording clock signal is stopped being supplied to semiconductor laser drive circuit on optical pickup during reproduction operation 失效
标题翻译：记录时钟信号停止的光盘装置在再现操作期间被提供给光学拾取器上的半导体激光器驱动电路
公开(公告)号：US06552987B1
公开(公告)日：2003-04-22
申请号：US09463007
申请日：2000-01-19
申请人： Akihiro Asada , Toshimitsu Kaku , Takashi Hoshino , Masaaki Kurebayashi
发明人： Akihiro Asada , Toshimitsu Kaku , Takashi Hoshino , Masaaki Kurebayashi
IPC分类号： G11B70045
CPC分类号： G11B7/0045 , G11B7/00456 , G11B7/005 , G11B7/00745 , G11B20/12
摘要： According to the present invention, in an optical disk apparatus constructed to supply signals for controlling a semiconductor laser drive circuit provided to an optical pickup from a signal processing circuit through a flexible cable, the semiconductor laser drive circuit is so constructed as to generate a drive current signal for the semiconductor laser on the basis of a binary signal and a clock signal which are supplied from the signal processing circuit through the flexible cable and the signal processing circuit is so constructed as to supply the clock signal during recording of data and stop the supply of the block signal during reproduction of data.
摘要翻译：根据本发明，在通过柔性电缆从信号处理电路提供用于控制提供给光学拾取器的半导体激光器驱动电路的信号的光盘装置中，半导体激光器驱动电路被构造成产生驱动基于通过柔性电缆和信号处理电路从信号处理电路提供的二进制信号和时钟信号的半导体激光器的电流信号被构造成在记录数据期间提供时钟信号并停止在再现数据期间提供块信号。

60. 发明授权

US06496461B2 Information recording/reproducing apparatus 失效
公开(公告)号：US06496461B2
公开(公告)日：2002-12-17
申请号：US09968969
申请日：2001-10-03
申请人： Norimoto Ichikawa , Hiroyuki Minemura , Toshimitsu Kaku , Hisataka Sugiyama
发明人： Norimoto Ichikawa , Hiroyuki Minemura , Toshimitsu Kaku , Hisataka Sugiyama
IPC分类号： G11B700
CPC分类号： G11B7/0908 , G11B7/005 , G11B7/007 , G11B7/00718
摘要： A method for recording information and information recording/reproducing apparatus wherein information of a plurality of sectors is recorded as one recording unit into an optical information recording medium, a recording area of which is constructed with a plurality of zones, each being different in a sector number per one round of track. Information is recorded per one recording unit into the optical information recording medium and a verify control is conducted after the recording of information, wherein a number of recording units for conducting the verify control for each of the zones is changed upon basis of a number of sectors per one round of track and a number of sectors for turning back by the one round of track.

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