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1. 发明授权

US06657935B2 Method and apparatus for recording information on recording medium 有权
公开(公告)号：US06657935B2
公开(公告)日：2003-12-02
申请号：US09944120
申请日：2001-09-04
申请人： Hideharu Eguchi , Yasuhiro Ueki , Osamu Yanagisawa , Yutaka Osada , Kenji Koishi , Makoto Usui , Kohjyu Konno , Yuuichi Kamioka
发明人： Hideharu Eguchi , Yasuhiro Ueki , Osamu Yanagisawa , Yutaka Osada , Kenji Koishi , Makoto Usui , Kohjyu Konno , Yuuichi Kamioka
IPC分类号： G11B700
CPC分类号： G11B7/126
摘要： Multi-pulse trains of a forward laser beam are applied to an optical disc to record mark areas thereon. The multi-pulse trains correspond to the mark areas respectively. The multi-pulse trains represent information to be recorded. Detection is made as to an intensity of a reflected laser beam which results from reflection of the forward laser beam by the optical disc. The detected intensity is divided by a setting intensity to get a division result. A condition of recording of each of the mark areas is detected in response to the division result. An amplitude of each of the multi-pulse trains is controlled in response to the detected condition.

2. 发明授权

US06728178B2 Semiconductor laser control method and semiconductor laser control device 有权
标题翻译：半导体激光控制方法和半导体激光控制装置
公开(公告)号：US06728178B2
公开(公告)日：2004-04-27
申请号：US09983402
申请日：2001-10-24
申请人： Kenji Koishi , Yoshiyuki Miyabata , Makoto Usui , Kohjyu Konno , Yasuhiro Ueki , Tomonori Ueno , Yutaka Osada , Toru Fujimoto
发明人： Kenji Koishi , Yoshiyuki Miyabata , Makoto Usui , Kohjyu Konno , Yasuhiro Ueki , Tomonori Ueno , Yutaka Osada , Toru Fujimoto
IPC分类号： H01S310
CPC分类号： G11B7/1263 , G11B7/1267
摘要： Playback signal amplitude drops and continuity of the signal track amplitude is lost at the beginning the data recording area when data is incrementally written to optical discs such as DVD-R or DVD-RW media. Feed-forward control quickly settles semiconductor laser recording power to the target power level immediately after an incremental recording starts. While recording continues, feedback control maintains laser power at a desired recording power level even when the required current supply varies due to the temperature characteristics of the semiconductor laser when recording lasts for an extended period of time. A semiconductor laser control method and semiconductor laser control device thereby maintain laser power at a stable target recording power level quickly and for as long as recording continues.
摘要翻译：当数据被递增地写入诸如DVD-R或DVD-RW光盘的光盘时，数据记录区开始时，回放信号幅度下降和信号轨迹幅度的连续性丢失。增量记录开始后，前馈控制可以快速将半导体激光记录功率稳定在目标功率水平。在继续记录的同时，即使当所需的电流源由于半导体激光器的温度特性在长时间持续时的温度特性而变化时，反馈控制将激光功率维持在期望的记录功率水平。半导体激光器控制方法和半导体激光器控制装置能够使激光功率保持在稳定的目标记录功率水平，并且只要持续进行记录。

3. 发明授权

US06912190B2 Optical disc apparatus and method for reading information from an optical disk having tracks and spaces between the tracks on which address information is recorded 有权
标题翻译：光盘装置和方法，用于从具有记录有地址信息的轨道之间的轨道和间隔的光盘读取信息
公开(公告)号：US06912190B2
公开(公告)日：2005-06-28
申请号：US09987384
申请日：2001-11-14
申请人： Chikashi Inokuchi , Kenji Koishi , Kohjyu Konno , Yutaka Osada , Mitsuhiko Oohta , Takashi Kawai
发明人： Chikashi Inokuchi , Kenji Koishi , Kohjyu Konno , Yutaka Osada , Mitsuhiko Oohta , Takashi Kawai
IPC分类号： G11B7/005 , G11B7/007 , G11B7/13 , G11B20/10 , G11B27/19 , G11B27/24 , G11B7/00
CPC分类号： G11B27/24 , G11B7/005 , G11B7/007 , G11B7/00745 , G11B7/131 , G11B20/10009 , G11B2220/216 , G11B2220/218 , G11B2220/2562
摘要： An optical disc apparatus reads the address information from an optical disc which has tracks and track spaces formed between tracks. The apparatus has an optical head which irradiates the disc with light and includes tracking detectors, divided into a first detector and a second detector in a track direction, detecting the light reflected from the disc and outputting detection signals, an adjusting circuit which adjusts amplitudes of the first and second detection signals and outputs the signals at a position where the address information is recorded, a differential amplifying circuit which outputs the differential signal which is the difference between the adjusted first and second detection signals, and an address detecting circuit which detects the address information based on the differential signal. As a result, the optical disc apparatus accurately detects whether information is being recorded on a correct track and improves the reliability during recording.
摘要翻译：光盘装置从具有在轨道之间形成的轨道和轨道空间的光盘读取地址信息。该装置具有用光照射光盘的光头，并且包括在轨道方向上被分成第一检测器和第二检测器的跟踪检测器，检测从盘反射的光并输出检测信号;调整电路，第一和第二检测信号并输出在地址信息被记录的位置处的信号，输出作为调整后的第一和第二检测信号之间的差的差分信号的差分放大电路和检测基于差分信号的地址信息。结果，光盘装置准确地检测信息是否正在记录在正确的轨道上并且提高了记录期间的可靠性。

4. 发明申请

US20050152260A1 Optical information recording apparatus for stable recording 有权
标题翻译：用于稳定记录的光信息记录装置
公开(公告)号：US20050152260A1
公开(公告)日：2005-07-14
申请号：US11046777
申请日：2005-02-01
申请人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
发明人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
IPC分类号： G11B7/0045 , G11B7/09 , G11B7/125 , G11B7/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/0901
摘要： In an apparatus for recording information to an optical recording medium, a laser beam is irradiated to and reflected from the medium. A photodetector detects the light quantity of the irradiated or reflected light beam, and the detected laser beam is subjected to signal processing. Then, a sampler samples the laser beam at the timing of a sampling pulse which is supplied from a sampling pulse generator. Then, a controller controls the laser power according to the sampled laser beam. A pulse timing setting unit sets and adjusts the timing of the sampling pulse by taking into account the response time in the propagation path of the laser beam from the start of the irradiation to the sampling. Thus, the laser power can be monitored correctly, and the laser power can be optimized so as to stably and reliably reproduce an address signal and to generate a servo signal while data is being recorded.
摘要翻译：在用于将信息记录到光学记录介质的装置中，激光束被照射并从介质反射。光检测器检测照射或反射光束的光量，并且检测的激光束进行信号处理。然后，采样器在从采样脉冲发生器提供的采样脉冲的定时采样激光束。然后，控制器根据采样的激光束控制激光功率。脉冲定时设定单元通过考虑激光束从照射开始到采样的传播路径中的响应时间来设定和调整采样脉冲的定时。因此，可以正确地监视激光功率，并且可以优化激光功率，以便稳定可靠地再现地址信号，并在数据被记录时产生伺服信号。

5. 发明授权

US06868053B2 Optical information recording apparatus for stable recording 有权
公开(公告)号：US06868053B2
公开(公告)日：2005-03-15
申请号：US09832938
申请日：2001-04-12
申请人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
发明人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
IPC分类号： G11B7/0045 , G11B7/09 , G11B7/125 , G11B5/09
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/0901
摘要： In an apparatus for recording information to an optical recording medium, a laser beam is irradiated to and reflected from the medium. A photodetector detects the light quantity of the irradiated or reflected light beam, and the detected laser beam is subjected to signal processing. Then, a sampler samples the laser beam at the timing of a sampling pulse which is supplied from a sampling pulse generator. Then, a controller controls the laser power according to the sampled laser beam. A pulse timing setting unit sets and adjusts the timing of the sampling pulse by taking into account the response time in the propagation path of the laser beam from the start of the irradiation to the sampling. Thus, the laser power can be monitored correctly, and the laser power can be optimized so as to stably and reliably reproduce an address signal and to generate a servo signal while data is being recorded.

6. 发明授权

US07113473B2 Optical information recording apparatus for stable recording 有权
标题翻译：用于稳定记录的光信息记录装置
公开(公告)号：US07113473B2
公开(公告)日：2006-09-26
申请号：US11046777
申请日：2005-02-01
申请人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
发明人： Toyoji Gushima , Makoto Usui , Kenji Koishi , Yuuichi Kamioka
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/0901
摘要： In an apparatus for recording information to an optical recording medium, a laser beam is irradiated to and reflected from the medium. A photodetector detects the light quantity of the irradiated or reflected light beam, and the detected laser beam is subjected to signal processing. Then, a sampler samples the laser beam at the timing of a sampling pulse which is supplied from a sampling pulse generator. Then, a controller controls the laser power according to the sampled laser beam. A pulse timing setting unit sets and adjusts the timing of the sampling pulse by taking into account the response time in the propagation path of the laser beam from the start of the irradiation to the sampling. Thus, the laser power can be monitored correctly, and the laser power can be optimized so as to stably and reliably reproduce an address signal and to generate a servo signal while data is being recorded.
摘要翻译：在用于将信息记录到光学记录介质的装置中，激光束被照射并从介质反射。光检测器检测照射或反射光束的光量，并且检测的激光束进行信号处理。然后，采样器在从采样脉冲发生器提供的采样脉冲的定时采样激光束。然后，控制器根据采样的激光束控制激光功率。脉冲定时设定单元通过考虑激光束从照射开始到采样的传播路径中的响应时间来设定和调整采样脉冲的定时。因此，可以正确地监视激光功率，并且可以优化激光功率，以便稳定可靠地再现地址信号，并在数据被记录时产生伺服信号。

7. 发明授权

US06490302B1 Semiconductor laser control circuit and laser light source 失效
标题翻译：半导体激光控制电路和激光光源
公开(公告)号：US06490302B1
公开(公告)日：2002-12-03
申请号：US09698975
申请日：2000-10-27
申请人： Kenji Koishi , Kohjyu Konno
发明人： Kenji Koishi , Kohjyu Konno
IPC分类号： H01S300
CPC分类号： H01S5/06832 , G11B7/1263 , H01S5/4025
摘要： A semiconductor laser control circuit of the invention can modulate a light power level among a plurality of set levels including a first level, a second level lower than the first level, and a third level lower than the first level but higher than the second level. The semiconductor laser control circuit includes: a circuit portion for generating a first signal based on a light power level actually detected by a light detector in a first period in which a light power level of laser radiation is to be modulated among the first level, the second level, and the third level; a circuit portion for generating a second signal based on a light power level actually detected by the light detector in a second period in which a light power level of the laser radiation is to be modulated between the first level and the second level; a circuit portion for generating a third signal based on a light power level actually detected by the light detector in a third period in which the light power level of the laser radiation is to be at the third level; and a signal processor for determining a light power level of the first level and a light power level of the second level by operation, based on the first to third signals. The light power level is adjusted based on an output of the signal processor.
摘要翻译：本发明的半导体激光器控制电路可以在包括第一电平，低于第一电平的第二电平和低于第一电平但高于第二电平的第三电平的多个设定电平之间调制光功率电平。半导体激光器控制电路包括：电路部分，用于在第一阶段中基于由光检测器实际检测的光功率电平产生第一信号，在第一周期中，要在第一电平之间调制激光辐射的光功率电平，第二级和第三级; 电路部分，用于在第一时间段内基于由光检测器实际检测的光功率电平产生第二信号，在第二周期中将要在第一电平和第二电平之间调制激光辐射的光功率电平; 电路部分，用于在激光辐射的光功率级别处于第三级的第三周期中，基于由光检测器实际检测到的光功率电平产生第三信号; 以及信号处理器，用于基于第一至第三信号，通过操作来确定第一电平的光功率电平和第二电平的光功率电平。光功率电平根据信号处理器的输出进行调整。

8. 发明授权

US08068392B2 Recording method, recording apparatus, and recording medium 有权
标题翻译：记录方法，记录装置和记录介质
公开(公告)号：US08068392B2
公开(公告)日：2011-11-29
申请号：US10562756
申请日：2004-07-01
申请人： Kenji Koishi
发明人： Kenji Koishi
IPC分类号： G11B7/00
CPC分类号： G11B7/0062 , G11B7/00455 , G11B7/00736 , G11B7/1267
摘要： A recording method is provided, which comprises the steps of (a) generating a plurality of pulse sequences corresponding to a plurality of linear velocities, (b) while rotating a recording medium with a linear velocity selected from the plurality of linear velocities, forming at least one of a recording mark and a space by irradiating the recording medium with a pulse sequence selected from the plurality of pulse sequences, the pulse corresponding to the linear velocity. The step (a) comprises the steps of (a-1) measuring at least one first recording parameter corresponding to at least one linear velocity selected from the plurality of linear velocities, (a-2) determining a second recording parameter corresponding to the plurality of linear velocities based on the at least one first recording parameter measured, and (a-3) generating the plurality of pulse sequences corresponding to the plurality of linear velocities based on the second recording parameter measured.
摘要翻译：提供了一种记录方法，其包括以下步骤：（a）产生对应于多个线速度的多个脉冲序列，（b）在以多个线速度选择的线速度旋转记录介质时，形成通过用从多个脉冲序列中选择的脉冲序列照射记录介质，记录标记和空间中的至少一个，对应于线速度的脉冲。步骤（a）包括以下步骤：（a-1）测量与从多个线速度中选择的至少一个线速度对应的至少一个第一记录参数，（a-2）确定对应于多个线速度的第二记录参数基于所测量的至少一个第一记录参数的线速度，以及（a-3）基于所测量的第二记录参数生成与多个线速度对应的多个脉冲序列。

9. 发明授权

US07486605B2 Recording method and media having marks and spaces with lengths defined by a predetermined modulation method 有权
标题翻译：记录方法和具有由预定调制方法定义的长度的标记和间隔的介质
公开(公告)号：US07486605B2
公开(公告)日：2009-02-03
申请号：US11467130
申请日：2006-08-24
申请人： Mamoru Shoji , Kenji Koishi , Atsushi Nakamura , Takashi Ishida , Shuichi Tasaka
发明人： Mamoru Shoji , Kenji Koishi , Atsushi Nakamura , Takashi Ishida , Shuichi Tasaka
IPC分类号： G11B7/0045
CPC分类号： G11B7/24085 , G11B7/00456 , G11B11/10506 , G11B11/1053
摘要： The optical data recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulse-like light beam to an optical disc, so that a plurality of recording marks and spaces which have lengths corresponding to the plurality of recording modulation codes are formed on the optical disc. In the optical data recording method, at least two of the plurality of recording marks comprises: a first pulse which is disposed at a front and forms a leading edge of the recording mark, a last pulse which is disposed at a backend and forms a trailing edge of the recording mark, and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark. The multi-pulse train has a pulse period longer than T which represents a reference period of the recording modulation code.
摘要翻译：该光学数据记录方法包括以下步骤：调制要记录的数据，以产生多个记录调制码; 并向光盘发射脉冲状光束，使得在光盘上形成具有与多个记录调制码对应的长度的多个记录标记和空间。在光学数据记录方法中，多个记录标记中的至少两个记录标记包括：设置在前面并形成记录标记的前沿的第一脉冲，设置在后端并形成尾部的最后脉冲记录标记的边缘，以及设置在第一脉冲和最后脉冲之间并形成记录标记的中心的多脉冲串。多脉冲串具有长于T的脉冲周期，其表示记录调制码的参考周期。

10. 发明授权

US07414924B2 Magneto-optical recording medium having watermark for preventing unauthorized copy 有权
标题翻译：具有用于防止未授权复制的水印的磁光记录介质
公开(公告)号：US07414924B2
公开(公告)日：2008-08-19
申请号：US11075601
申请日：2005-03-09
申请人： Mitsuaki Oshima , Shinichi Konishi , Shin-ichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshiho Gotoh , Yoshinari Takemura , Norio Miyatake , Motoyoshi Murakami
发明人： Mitsuaki Oshima , Shinichi Konishi , Shin-ichi Tanaka , Kenji Koishi , Mitsurou Moriya , Yoshiho Gotoh , Yoshinari Takemura , Norio Miyatake , Motoyoshi Murakami
IPC分类号： G11B11/00
CPC分类号： G11B23/281 , G06T1/0021 , G06T2201/0064 , G11B7/0037 , G11B7/0045 , G11B7/00736 , G11B7/24 , G11B11/10506 , G11B11/10515 , G11B11/10584 , G11B11/10595 , G11B20/00086 , G11B20/00123 , G11B20/00166 , G11B20/00181 , G11B20/0021 , G11B20/00231 , G11B20/0026 , G11B20/00268 , G11B20/00347 , G11B20/00876 , G11B20/00884 , G11B20/10 , G11B20/1217 , G11B20/1258 , G11B23/288 , G11B23/40 , G11B2020/122 , G11B2020/1244 , G11B2020/1245
摘要： An optical disk that includes main information and write-once information recorded on the optical disk. The write-once information is recorded as information unique to the optical disk, and the write-once information stores at least watermark production parameters for producing a watermark.
摘要翻译：包括记录在光盘上的主信息和一次写入信息的光盘。一次写入信息被记录为光盘唯一的信息，并且一次写入信息至少存储用于产生水印的水印产生参数。

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