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21. 发明授权

US5513165A Method for controlling the farm of a magnetic domain of a magneto-optical disk using pre-write testing 失效
标题翻译：使用预写测试来控制磁光盘的磁畴的场的方法
公开(公告)号：US5513165A
公开(公告)日：1996-04-30
申请号：US149931
申请日：1993-11-10
申请人： Hiroshi Ide , Fumiyoshi Kirino , Tsuyashi Toda , Takeshi Maeda , Hiroyuki Tsuchinaga , Fumio Kugiya , Kazuo Shigematsu , Seiichi Mita , Atsushi Saito , Toshimitsu Kaku
发明人： Hiroshi Ide , Fumiyoshi Kirino , Tsuyashi Toda , Takeshi Maeda , Hiroyuki Tsuchinaga , Fumio Kugiya , Kazuo Shigematsu , Seiichi Mita , Atsushi Saito , Toshimitsu Kaku
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/125 , G11B11/105 , G11B20/10 , G11B20/12 , G11B20/18 , G11B7/00 , G11B7/12
CPC分类号： G11B7/126 , G11B11/1053 , G11B11/10595 , G11B20/10009 , G11B20/10212 , G11B20/1816 , G11B7/0045 , G11B11/10506 , G11B20/1258 , G11B7/013 , G11B7/24085
摘要： An optical recording control method determines an optimum recording laser power by effecting a test recording before information to be recorded is recorded on a disk. The recording laser power is formed of a plurality of powers. A relationship among the plurality of laser powers is regulated by power level ratios between respective powers, whereby a power used when a laser light is radiated on the disk can be controlled to be constant independent of an ambient temperature and a structure of a disk. Therefore, accurate recording marks can be formed on the disk.
摘要翻译：光记录控制方法通过在待记录信息记录在盘上之前进行测试记录来确定最佳记录激光功率。记录激光功率由多个功率形成。多个激光功率之间的关系由各个功率之间的功率电平比来调节，由此当激光照射在盘上时使用的功率可以被控制为与环境温度和盘的结构无关地恒定。因此，可以在盘上形成准确的记录标记。

22. 发明授权

US4751695A Method and apparatus for tracking servo system 失效
标题翻译：跟踪伺服系统的方法和装置
公开(公告)号：US4751695A
公开(公告)日：1988-06-14
申请号：US870944
申请日：1986-06-05
申请人： Toshimitsu Kaku , Takeshi Maeda , Kazuo Shigematsu
发明人： Toshimitsu Kaku , Takeshi Maeda , Kazuo Shigematsu
IPC分类号： G11B7/09 , G11B7/095
CPC分类号： G11B7/0901
摘要： A tracking servo system using an optical disc with guide grooves formed thereon for a plurality of tracks each having a plurality of interrupting portions, wherein a tracking signal is detected from the diffracted light of a beam spot irradiated to the optical disc and reflected from the guide groove, then the tracking signal is corrected by a signal component included therein and obtained from the interrupting portions, and the track is traced by the use of such corrected signal and the tracking signal.
摘要翻译：一种跟踪伺服系统，其使用具有形成在其上的导槽的多个轨道的光盘，每个轨道具有多个中断部分，其中，从照射到光盘并从该引导件反射的束斑的衍射光中检测跟踪信号然后通过其中包含的信号分量并且从中断部分获得跟踪信号来校正跟踪信号，并且通过使用这种校正信号和跟踪信号来跟踪轨迹。

23. 发明授权

US5848045A Method for recording and reading an optical disk 失效
标题翻译：记录和读取光盘的方法
公开(公告)号：US5848045A
公开(公告)日：1998-12-08
申请号：US968526
申请日：1997-11-12
申请人： Fumiyoshi Kirino , Tsuyoshi Toda , Hiroshi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
发明人： Fumiyoshi Kirino , Tsuyoshi Toda , Hiroshi Ide , Hisataka Sugiyama , Atsushi Saito , Hiroyuki Tsuchinaga , Takeshi Maeda , Fumio Kugiya , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Yasuhide Ouchi
IPC分类号： G11B7/0045 , G11B7/095 , G11B7/125 , G11B11/105 , G11B20/12 , G11B20/18 , G11B7/00
CPC分类号： G11B7/126 , G11B11/1053 , G11B11/10595 , G11B7/0045 , G11B7/0956 , G11B20/1258 , G11B20/182
摘要： A super high density optical disk apparatus is obtained by using an exchangeable recording medium having a recording capacity of at least 1.5 Gb/in.sup.2 in an optical recording and reading apparatus for recording or reading at least using a laser beam or by using one of means which can record on a recording medium only once and means which can record at least two times repeatedly as recording means to be used.
摘要翻译：通过在至少使用激光束进行记录或读取的光学记录和读取装置中使用具有至少1.5Gb / in2的记录容量的可交换记录介质来获得超高密度光盘装置，或者通过使用可以在记录介质上记录一次，并且可以重复记录至少两次作为要使用的记录装置的装置。

24. 发明授权

US5105409A Method and apparatus for optical recording and reproduction with tracking servo reducing track offset 失效
标题翻译：用于跟踪跟踪减少跟踪偏移的光学记录和再现的方法和装置
公开(公告)号：US5105409A
公开(公告)日：1992-04-14
申请号：US230971
申请日：1988-08-11
申请人： Toshimitsu Kaku , Kazuo Shigematsu , Hisataka Sugiyama , Takeshi Maeda , Masahiro Takasago
发明人： Toshimitsu Kaku , Kazuo Shigematsu , Hisataka Sugiyama , Takeshi Maeda , Masahiro Takasago
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/09
CPC分类号： G11B7/094
摘要： Disclosed is an optical recording and reproducing apparaus comprising a light source directing a light spot toward a recording medium, a detection system detecting light reflected from the recording medium to derive an electrical signal from the reflected light, an information processing circuit modulating the intensity of the light spot according to writing pulses to record information on the recording medium and using the electrical signal to reproduce information from the recording medium, and a tracking servo circuit carrying out tracking servo operation on the basis of the electrical signal and including an extracting circuit connected to a source of extracting pulses having a pulse width at least equal to the writing pulse width so that writing pulse parts contained in the electrical signal are extracted during recording information, whereby a track offset occurring during information recording can be minimized, and the stability of the tracking servo system can be improved.

25. 发明授权

US5642343A Magnetooptic disc apparatus and recording medium 失效
标题翻译：磁光盘装置和记录介质
公开(公告)号：US5642343A
公开(公告)日：1997-06-24
申请号：US87777
申请日：1993-07-09
申请人： Tsuyoshi Toda , Kazuo Shigematsu , Seiichi Mita , Toshimitsu Kaku , Takeshi Maeda , Fumiyoshi Kirino , Hiroshi Ide , Atsushi Saito
发明人： Tsuyoshi Toda , Kazuo Shigematsu , Seiichi Mita , Toshimitsu Kaku , Takeshi Maeda , Fumiyoshi Kirino , Hiroshi Ide , Atsushi Saito
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/125 , G11B11/105 , G11B20/10 , G11B20/12 , G11B20/18 , G11B7/00
CPC分类号： G11B11/10506 , G11B11/1053 , G11B11/10595 , G11B20/10009 , G11B20/10212 , G11B20/1816 , G11B7/0045 , G11B7/126 , G11B7/24085 , G11B11/10517 , G11B20/1258
摘要： An optical method for recording, reproducing, and erasing a digital signal of a mark length recording system onto/from an optical recording medium such as an optical disc or the like eliminates a fluctuation of the edge position of the reproduction signal due to heat interference between pits, thereby reducing a fluctuation of the edge position due to a fluctuation of external environmental conditions. For this purpose, there are proposed the following methods: 1) the shape of the recording pulse waveform is controlled, 2) the density at which data is recorded to the disc is variably set in accordance with the disc position, 3) a test recording is executed prior to recording user data, and the like. With these methods, a superhigh density optical recording can be realized.
摘要翻译： PCT No.PCT / JP92 / 01460 Sec。 371日期：1993年7月9日 102（e）日期1993年7月9日PCT 1991年11月10日PCT PCT。公开号WO93 / 10527 日期：1993年5月27日用于记录，再现和擦除标记长度记录系统的数字信号到诸如光盘等的光学记录介质上的光学方法消除了由于再现信号的边缘位置的波动以加热凹坑之间的干扰，从而减少由于外部环境条件的波动引起的边缘位置的波动。为此，提出了以下方法：1）记录脉冲波形的形状被控制，2）根据光盘位置可变地设置数据记录到盘的密度，3）测试记录在记录用户数据之前执行等。利用这些方法，可以实现超高密度光学记录。

26. 发明授权

US5590111A Method of controlling recording of optical records 失效
标题翻译：控制光学记录记录的方法
公开(公告)号：US5590111A
公开(公告)日：1996-12-31
申请号：US91003
申请日：1993-07-13
申请人： Fumiyoshi Kirino , Takeshi Maeda , Hiroshi Ide , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Tsuyoshi Toda
发明人： Fumiyoshi Kirino , Takeshi Maeda , Hiroshi Ide , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu , Tsuyoshi Toda
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/125 , G11B11/105 , G11B20/10 , G11B20/12 , G11B20/18 , G11B7/00 , G11B3/90 , G11B5/09
CPC分类号： G11B7/126 , G11B11/1053 , G11B11/10595 , G11B20/10009 , G11B20/10212 , G11B20/1816 , G11B7/0045 , G11B7/1267 , G11B11/10506 , G11B11/10508 , G11B20/1258 , G11B7/24085
摘要： In a write control method on an optical recording, at least one shift amount selected from the defocus amount of a laser beam on a recording medium, the shift amount of a recording position on a recording track and the shift amount of laser power during recording is controlled such that the selected amount falls within a predetermined range. Subsequently, a trial signal is trially recorded at a plurality of trial zones on the recording medium by using a laser power value as a parameter. The recorded trial signal is read and a difference .DELTA.V between center levels of a highest density waveform and a lowest density waveform is detected. In connection with each trial zone, the laser power value when a reading trial signal which makes the difference .DELTA.V minimum is recorded is defined as an optimum recording power value. Regular data is recorded at a predetermined storage area on the recording medium by using an optimum laser power value determined in connection with a trial zone closest to the predetermined storage area.
摘要翻译：在光学记录中的写入控制方法中，从记录介质上的激光束的散焦量，记录轨道上的记录位置的偏移量和记录期间的激光功率的移动量选择的至少一个偏移量是被控制使得所选择的量落在预定范围内。随后，通过使用激光功率值作为参数，在记录介质上的多个试验区上试用信号。读取记录的试验信号，并检测最高密度波形的中心水平和最低密度波形之间的差ΔTA。结合每个试验区域，当记录使DELTA V最小值的读取试验信号被记录时的激光功率值被定义为最佳记录功率值。通过使用与最接近预定存储区域的试验区域确定的最佳激光功率值，将正常数据记录在记录介质上的预定存储区域。

27. 发明授权

US5457666A Light modulation method for forming a mark in magneto-optical recording system 失效
标题翻译：用于在磁光记录系统中形成标记的光调制方法
公开(公告)号：US5457666A
公开(公告)日：1995-10-10
申请号：US114062
申请日：1993-08-31
申请人： Tsuyoshi Toda , Hiroshi Ide , Fumiyoshi Kirino , Takeshi Maeda , Hiroyuki Tsuchinaga , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu
发明人： Tsuyoshi Toda , Hiroshi Ide , Fumiyoshi Kirino , Takeshi Maeda , Hiroyuki Tsuchinaga , Toshimitsu Kaku , Seiichi Mita , Kazuo Shigematsu
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/125 , G11B11/10 , G11B11/105 , G11B7/24
CPC分类号： G11B7/126 , G11B11/10506 , G11B11/1053 , G11B7/0045 , G11B7/006
摘要： A magneto-optical disk recording control method using the mark length recording method wherein the marks and gap regions between marks are recorded on the surface of the disk by maintaining a constant temperature distribution during the recording. The laser is driven to a non-recording level in gap regions between marks that exceed a base recording level used for reproduction of the marks. When a mark is recorded, the laser power is increased to a recording power level and after the mark has been recorded, the laser power level is reduced to the base power level, followed by being raised to the gap recording level. Control of the laser is performed by superposing a plurality of pulse trains that are synchronized with respect to a clock having a cycle T. The pulse trains are derived from the code train to be recorded and have pulses with a duration that is an integral multiple of (1/2)T. If the pulse width of the recording code train exceeds 2T, then the laser is controlled to reach a first power level in accordance with pulses of a first pulse train, be reduced to the gap recording level and then raised to a second power level in accordance with a second recording pulse train to maintain the temperature distribution constant during the recording of the mark. For the recording of longer marks, the laser is controlled to vary between the second power level and the gap recording level.
摘要翻译：一种使用标记长度记录方法的磁光盘记录控制方法，其中通过在记录期间保持恒定的温度分布将标记之间的标记和间隙区域记录在盘的表面上。在超过用于再现标记的基本记录水平的标记之间的间隙区域中激光被驱动到非记录水平。当记录标记时，激光功率增加到记录功率水平，并且在记录标记之后，激光功率水平降低到基本功率水平，然后升高到间隙记录水平。通过叠加相对于具有周期T的时钟同步的多个脉冲串来执行激光的控制。脉冲序列是从要被记录的代码序列导出的，具有持续时间为整数倍的脉冲（1/2）T。如果记录代码串的脉冲宽度超过2T，则根据第一脉冲序列的脉冲将激光器控制到达到第一功率电平，减小到间隙记录电平，然后依次升高到第二功率电平具有第二记录脉冲串，以在记录记录期间保持温度分布恒定。为了记录更长的标记，激光器被控制在第二功率电平和间隙记录电平之间变化。

28. 发明授权

US5270987A Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor 失效
标题翻译：磁光记录和再现方法，磁光存储装置及其磁光记录介质
公开(公告)号：US5270987A
公开(公告)日：1993-12-14
申请号：US509743
申请日：1990-04-17
申请人： Toshimitsu Kaku , Shigeru Nakamura , Masahiko Takahashi , Toshio Niihara , Harukazu Miyamoto , Norio Ohta , Takeshi Nakao , Hirofumi Sukeda , Masahiro Ojima , Takashi Toyooka , Tsuneo Suganuma , Fumiyoshi Kirino , Yoshinori Miyamura
发明人： Toshimitsu Kaku , Shigeru Nakamura , Masahiko Takahashi , Toshio Niihara , Harukazu Miyamoto , Norio Ohta , Takeshi Nakao , Hirofumi Sukeda , Masahiro Ojima , Takashi Toyooka , Tsuneo Suganuma , Fumiyoshi Kirino , Yoshinori Miyamura
IPC分类号： G11B11/105 , G11B11/00
CPC分类号： G11B11/10584 , G11B11/10536 , G11B11/10545 , G11B11/10552 , G11B11/10558 , G11B11/10593 , G11B11/10571
摘要： A magnetic field of a polarity corresponding to information to be recorded is applied while a recording spot having a high energy is irradiated to a magneto-optical recording medium to record domains representing the information along a track. The recorded domains are read out by a reproducing spot having a lower energy than the recording spot and a high resolution power along the track. A recording head has an optical system for irradiating the recording spot having the high energy to the magneto-optical recording medium and a magnetic head for applying a magnetic field having a polarity thereof switched in accordance with the information to be recorded, to an irradiation area of the recording spot, a reproducing head has an optical system for irradiating the reproducing spot having the low energy by a laser beam having a wavelength of no larger than 600 nm and a magneto-optical signal detector for detecting a displacement of a polarization plane of a reflected light of the reproducing spot to read out the recording domains. The magneto-optical recording medium is made of a recording film having a multi-layer structure of alternate lamination of metal layers and dielectric layers.
摘要翻译：将具有高能量的记录点照射到磁光记录介质上，记录与记录信息对应的极性的磁场，记录表示信息沿着轨迹的域。记录的区域由具有比记录点更低的能量的再现点和沿着轨道的高分辨率电力读出。记录头具有用于向磁光记录介质照射具有高能量的记录点的光学系统和用于根据要记录的信息将其极性切换的磁场施加到照射区域的记录点，再现头具有用于通过具有不大于600nm的波长的激光束照射具有低能量的再现点的光学系统和用于检测偏振面的位移的磁光信号检测器再现点的反射光读出记录区域。磁光记录介质由具有金属层和电介质层的交替叠层的多层结构的记录膜制成。

29. 发明申请

US20080253238A1 OPTICAL DISC DEVICE AND REPRODUCTION METHOD 有权
标题翻译：光盘设备和再现方法
公开(公告)号：US20080253238A1
公开(公告)日：2008-10-16
申请号：US11947974
申请日：2007-11-30
申请人： Toshimitsu Kaku , Kazuhide Hamada
发明人： Toshimitsu Kaku , Kazuhide Hamada
IPC分类号： G11B7/00
CPC分类号： G11B7/0953 , G11B7/0941 , G11B7/126
摘要： Due to the axial runout of an optical disc, a frequency of a high-frequency current to be superimposed onto a DC current could not be maintained. In order to solve the problem described above, a drive signal is generated by superimposing a high-frequency signal onto a DC current, the drive signal is applied to a laser beam light source, thereby the light source is driven; and a servo signal at a signal level corresponding to a defocus amount of the laser beam relative to the surface of the optical disc is generated based on a reflected light of the laser beam from the recording surface of the optical disc, and a low-frequency component of the servo signal is extracted, and thereby the frequency of the high-frequency signal to be superimposed onto the DC current in the light source driver is controlled based on the low-frequency component of the servo signal.
摘要翻译：由于光盘的轴向跳动，不能保持叠加在直流电流上的高频电流的频率。为了解决上述问题，通过将高频信号叠加在直流电流上来产生驱动信号，驱动信号被施加到激光束光源，从而驱动光源; 并且基于来自光盘的记录表面的激光束的反射光产生与激光束相对于光盘表面的散焦量对应的信号电平的伺服信号，并且低频提取伺服信号的分量，从而基于伺服信号的低频分量来控制要叠加在光源驱动器中的DC电流上的高频信号的频率。

30. 发明授权

US07227822B2 Laser driver and optical disk system 失效
标题翻译：激光驱动器和光盘系统
公开(公告)号：US07227822B2
公开(公告)日：2007-06-05
申请号：US10782330
申请日：2004-02-18
申请人： Koichiro Nishimura , Manabu Katsuki , Toshimitsu Kaku
发明人： Koichiro Nishimura , Manabu Katsuki , Toshimitsu Kaku
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/00456 , G11B7/00458 , G11B20/1403 , H01S5/042 , H01S5/0683
摘要： A laser driver drives a laser diode by producing a write strategy, that is, a recording waveform from a recording clock and a modulated signal. In one embodiment, a laser driver produces the waveform of a driving signal, which is used to drive a laser diode, using a record data signal that represents record data to be recorded on a recording medium. The laser driver comprises an internal clock production circuit that produces an internal clock synchronous with the record data signal, and a strobe circuit that strobes the record data signal according to the internal clock.
摘要翻译：激光驱动器通过产生写入策略来驱动激光二极管，即来自记录时钟和调制信号的记录波形。在一个实施例中，激光驱动器使用表示要记录在记录介质上的记录数据的记录数据信号产生用于驱动激光二极管的驱动信号的波形。激光驱动器包括产生与记录数据信号同步的内部时钟的内部时钟产生电路，以及根据内部时钟选通记录数据信号的选通电路。

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