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1. 发明申请

US20080165643A1 Multivalued information reproducing method and multivalued information reproducing apparatus 审中-公开
标题翻译：多值信息再现方法和多值信息再现装置
公开(公告)号：US20080165643A1
公开(公告)日：2008-07-10
申请号：US12003748
申请日：2007-12-31
申请人： Toru Takeda , Tetsuya Shihara
发明人： Toru Takeda , Tetsuya Shihara
IPC分类号： G11B5/58
CPC分类号： G11B7/24088 , G11B7/005 , G11B7/1356 , G11B7/1365 , G11B7/1369 , G11B7/1381
摘要： A multivalued information reproducing apparatus includes: a light source which emits a linear polarized light having a prescribed polarization direction; a first optical system which generates a first linear polarized light and a second linear polarized light that have different polarization directions using the linear polarized light which is emitted from the light source and makes the two polarized lights input to an optical recording medium in which the polarization directions of recording lights are recorded as multivalued information; a second optical system by which light that passes the optical recording medium or light that is reflected by the optical recording medium is directed to a photo detecting portion in a state where the first linear polarized light and the second linear polarized light are separated; and a polarization direction judging portion which judges the polarization direction that is recorded in the optical recording medium based on amount of light of the first linear polarized light and amount of light of the second linear polarized light that are obtained by the photo detecting portion.
摘要翻译：多值信息再现装置包括：发射具有规定的偏振方向的线偏振光的光源; 使用从光源发射的线偏振光产生具有不同偏振方向的第一线偏振光和第二线偏振光的第一光学系统，并将两个偏振光输入到光学记录介质中，其中偏振记录灯的方向记录为多值信息; 第二光学系统，其中通过光学记录介质的光或由光学记录介质反射的光在第一线偏振光和第二线偏振光分离的状态下被引导到光检测部分; 以及偏振方向判断部，其基于由所述光检测部获得的所述第一线偏振光的光量和所述第二线偏振光的光量来判断记录在所述光记录介质中的所述偏振方向。

2. 发明申请

US20080101182A1 Disc device 有权
标题翻译：光盘设备
公开(公告)号：US20080101182A1
公开(公告)日：2008-05-01
申请号：US11977816
申请日：2007-10-26
申请人： Atsuhiko Chikaoka , Tetsuya Shihara
发明人： Atsuhiko Chikaoka , Tetsuya Shihara
IPC分类号： G11B19/04 , G11B20/18 , G11B3/64
CPC分类号： G11B27/11 , G11B20/00115 , G11B20/1883 , G11B27/034 , G11B2020/1893 , G11B2220/20 , G11B2220/40
摘要： The present invention provides a disc device capable of normally reproducing recorded information on a disc type recording medium while complementing the recorded information in a damaged portion of the recording medium with complementary information, and capable of constantly holding useful complementary information. The complementary information for complementing the recorded information in the damaged portion of the optical disc is acquired from a server and saved in a storage area of a storing unit, and the recorded information on the optical disc is reproduced while complementing the recorded information in the damaged portion with the complementary information. When a capacity of a free space in the storage area is less than a capacity necessary for saving acquired new complementary information, usefulness of the complementary information is evaluated based on time elapsed from last referenced time, a reference count, and an acquisition required expense for the complementary information saved in the storage area, the complementary information is deleted from the storage area in order of lower usefulness to enlarge the free space, and the new complementary information is saved in the free space.
摘要翻译：本发明提供了一种盘装置，其能够在盘型记录介质上正常地再现记录信息，同时利用补充信息补充记录介质的损坏部分中的记录信息，并能够持续保持有用的补充信息。用于补充光盘的损坏部分中的记录信息的补充信息从服务器获取并存储在存储单元的存储区域中，并且将记录在光盘上的信息进行再现，同时补充损坏的记录信息部分具有补充信息。当存储区域中的可用空间的容量小于保存所获得的新的补充信息所需的容量时，补充信息的有用性基于从上次参考时间，参考计数和所需的费用获得的时间来评估保存在存储区域中的补充信息，补充信息从存储区域中删除，以便扩大可用空间的较低有用性，并且将新的补充信息保存在可用空间中。

3. 发明申请

US20080074969A1 Recording Condition Optimizing Method, Information Recording/Reproducing Device, And Integrated Circuit Device 审中-公开
标题翻译：记录条件优化方法，信息记录/再现装置和集成电路装置
公开(公告)号：US20080074969A1
公开(公告)日：2008-03-27
申请号：US11631937
申请日：2005-06-23
申请人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
发明人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
IPC分类号： G11B15/52
CPC分类号： G11B20/10009 , G11B7/00456 , G11B7/1267 , G11B20/10046 , G11B20/10481
摘要： It is an object to minimize the effect of the reproduction transmission path characteristics or optical characteristics of an optical head, and more suitably adjust recording conditions. The recording condition optimization method of the present invention involves optimizing recording conditions in the recording of information to an optical disk (100), comprising a recording step (1103) of recording a recording pattern including a plurality of recording marks to the optical disk using specific recording conditions, a reproduction step (1102) of reproducing the recording pattern recorded in the recording step (1103), an equalization characteristics setting step (1101) of setting waveform equalization characteristics according to the recording pattern, an equalization step (1105) of using the waveform equalization characteristics set in the equalization characteristics setting step (1101) to equalize the waveform of the reproduction signal reproduced in the reproduction step (1102), and an adjustment step (1104) of using the reproduction signal whose waveform has been equalized in the equalization step (1105) to adjust the recording conditions.
摘要翻译：本发明的目的是最小化光头的再现传输路径特性或光学特性的影响，并且更适当地调节记录条件。本发明的记录条件优化方法涉及将信息记录中的记录条件优化到光盘（100），其包括使用特定的记录步骤（1103）将包括多个记录标记的记录图案记录到光盘记录条件，再现记录在记录步骤（1103）中的记录模式的再现步骤（1102），根据记录模式设置波形均衡特性的均衡特性设置步骤（1101），使用均衡特性设定步骤（1101）中设定的波形均衡特性，用于均衡再现步骤（1102）中再现的再现信号的波形，以及使用其波形已被均衡的再现信号的调整步骤（1104）均衡步骤（1105），以调节记录条件。

4. 发明授权

US07088662B2 Optical disc drive and method for controlling the same 失效
标题翻译：光盘驱动器及其控制方法
公开(公告)号：US07088662B2
公开(公告)日：2006-08-08
申请号：US10488370
申请日：2003-08-01
申请人： Tetsuya Shihara , Tatsuya Takeuchi , Kenji Fujiune
发明人： Tetsuya Shihara , Tatsuya Takeuchi , Kenji Fujiune
IPC分类号： G11B7/007
CPC分类号： G11B7/0901 , G11B7/0045 , G11B7/005
摘要： An optical disc drive according to the present invention can read and write data from/on an optical disc 100 including record tracks to write data thereon and guide tracks for guiding a light beam 40. The drive includes: an optical pickup 101 with a converging optical system to focus the light beam 40 and form a spot thereof on the optical disc 100 for reading or writing the data; a tracking control section for controlling the converging optical system of the optical pickup 101 such that the light beam spot 40 follows a selected track on the optical disc 100 rotating; and a control unit 35 for operating the tracking control section in a first mode or in a second mode. In the first mode, the tracking control section makes the light beam spot 40 follow the recording tracks. In the second mode, the tracking control section makes the light beam spot 40 follow the guide tracks.
摘要翻译：根据本发明的光盘驱动器可以从包括记录轨道的光盘100上的数据读取数据，以便在其上写入数据，以及用于引导光束40的引导轨道。驱动器包括：具有会聚光学系统的光学拾取器101，用于聚焦光束40并在光盘100上形成一个点，用于读取或写入数据; 跟踪控制部分，用于控制光学拾取器101的会聚光学系统，使得光束光点40跟随旋转的光盘100上的选定轨道; 以及用于以第一模式或第二模式操作跟踪控制部的控制单元35。在第一模式中，跟踪控制部分使光束点40跟随记录轨道。在第二模式中，跟踪控制部分使光束点40跟随导轨。

5. 发明申请

US20050254403A1 Optical disc drive 失效
标题翻译：光盘驱动器
公开(公告)号：US20050254403A1
公开(公告)日：2005-11-17
申请号：US10524896
申请日：2003-10-06
申请人： Hiromichi Ishibashi , Tetsuya Shihara , Hisashi Senga , Toshio Matsumoto
发明人： Hiromichi Ishibashi , Tetsuya Shihara , Hisashi Senga , Toshio Matsumoto
IPC分类号： G11B7/125 , G11B7/00
CPC分类号： G11B7/126
摘要： In an optical disc drive, a laser light source emits a laser beam having an intensity changeable with the amount of drive current supplied. A first photodetector receives the laser beam reflected from an optical disc, thereby generating a readout signal. A second photodetector receives the laser beam, generates an electric signal representing the power of the laser beam received, and outputs the electric signal as a light quantity detection signal. A feedback control loop compares the level of the light quantity detection signal with a predetermined target value and regulates the drive current such that the level of the light quantity detection signal approaches the target value. In reading data from the optical disc, the target value is changed so as to compensate for a variation of the sensitivity of the second photodetector, thereby controlling the power of the laser beam emitted from the laser light source.
摘要翻译：在光盘驱动器中，激光光源发射具有随供给的驱动电流量而变化的强度的激光束。第一光电检测器接收从光盘反射的激光束，从而产生读出信号。第二光电检测器接收激光束，产生表示所接收的激光束的功率的电信号，并将该电信号作为光量检测信号输出。反馈控制环路将光量检测信号的电平与预定目标值进行比较，并且调节驱动电流，使得光量检测信号的电平接近目标值。在从光盘读取数据时，改变目标值以补偿第二光电检测器的灵敏度的变化，从而控制从激光光源发射的激光束的功率。

6. 发明授权

US06430119B1 Optical disk drive apparatus capable of searching an optimum target position 失效
标题翻译：能够搜索最佳目标位置的光盘驱动装置
公开(公告)号：US06430119B1
公开(公告)日：2002-08-06
申请号：US09568186
申请日：2000-05-09
申请人： Yuu Okada , Katsuya Watanabe , Tetsuya Shihara , Akihiko Nishioka , Koujiro Okamoto
发明人： Yuu Okada , Katsuya Watanabe , Tetsuya Shihara , Akihiko Nishioka , Koujiro Okamoto
IPC分类号： G11B2108
CPC分类号： G11B21/083 , G11B7/00718 , G11B7/0908 , G11B7/094 , G11B7/0945
摘要： An optical disk apparatus includes a converging section for converging a light beam toward an information carrier; a moving section for moving the light beam converged by the converging section in a direction perpendicular to a surface of the information carrier; a light detector for detecting the light beam reflected by the information carrier; a convergence state detecting section for generating a convergence state signal representing a convergence state of the light beam at a convergence point on the information carrier and outputting a reproduction signal from the information carrier, based on the output from the light detector; a focus controller for driving the moving section to make the convergence state constant based on the convergence state signal and a prescribed target position; a reproduction quality signal detector for detecting a reproduction quality signal representing a quality of the reproduction signal based on the reproduction signal; a reproduction quality signal measuring section for changing the target position and measuring a value of the reproduction quality signal corresponding to each of the changed target positions; a reproduction quality signal characteristic determining section for determining a characteristic of the reproduction quality signal based on the value of the reproduction quality signal corresponding to each of the changed target positions; and a target position searching section for searching for an optimum target position of the focus controller for optimizing the value of the reproduction quality signal based on a determination result of the reproduction quality signal characteristic determining section.
摘要翻译：光盘装置包括会聚光束朝向信息载体的会聚部分; 移动部分，用于沿着垂直于信息载体表面的方向移动由会聚部分会聚的光束; 用于检测由信息载体反射的光束的光检测器; 会聚状态检测部分，用于产生表示信息载体上的会聚点处的光束的会聚状态的会聚状态信号，并根据光检测器的输出从信息载体输出再现信号; 聚焦控制器，用于驱动所述移动部分，以使所述会聚状态基于所述会聚状态信号和规定的目标位置而恒定; 再现质量信号检测器，用于基于再现信号检测表示再现信号的质量的再现质量信号; 再现质量信号测量部分，用于改变目标位置并测量与每个改变的目标位置对应的再现质量信号的值; 再现质量信号特征确定部分，用于基于与每个改变的目标位置对应的再现质量信号的值来确定再现质量信号的特性; 以及目标位置搜索部分，用于基于再现质量信号特性确定部分的确定结果，搜索用于优化再现质量信号的值的焦点控制器的最佳目标位置。

7. 发明授权

US07616544B2 Access unit, access method, computer-readable recording medium recorded with access program, and control unit 有权
标题翻译：访问单元，访问方式，记录有访问程序的计算机可读记录介质和控制单元
公开(公告)号：US07616544B2
公开(公告)日：2009-11-10
申请号：US10591327
申请日：2005-10-21
申请人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
发明人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
IPC分类号： G11B7/00
CPC分类号： G11B7/1267 , G11B7/00736
摘要： An access unit, an access method, an access program and a control unit are provided. A record medium includes a user area for recording user data which can be recorded and regenerated based on an instruction given by a user. A recording-system circuit section included in the access unit records test data based on a predetermined test condition in the user area. A regeneration-system circuit section included in the access unit reads the test data recorded in the user area by the recording-system circuit section, and a system control circuit included in the access unit refers to the test data read by the regeneration-system circuit section and adjusts an access parameter for accessing the record medium.
摘要翻译：提供了存取单元，访问方法，访问程序和控制单元。记录介质包括用于记录用户数据的用户区域，用户数据可以基于用户给出的指令进行记录和再生。包含在访问单元中的记录系统电路部分基于用户区域中的预定测试条件记录测试数据。包括在存取单元中的再生系统电路部分通过记录系统电路部分读取记录在用户区域中的测试数据，并且包括在存取单元中的系统控制电路参考由再生系统电路读取的测试数据并调整访问记录介质的访问参数。

8. 发明申请

US20080056085A1 Information reproducing/recording apparatus 失效
标题翻译：信息再现/记录装置
公开(公告)号：US20080056085A1
公开(公告)日：2008-03-06
申请号：US11893358
申请日：2007-08-15
申请人： Ryusuke Noda , Tetsuya Shihara
发明人： Ryusuke Noda , Tetsuya Shihara
IPC分类号： G11B7/00
CPC分类号： G11B7/08517 , G11B7/0945
摘要： The present invention provides an information reproducing/recording apparatus capable of executing tracking servo normally in short time at the time of loading an information recording medium. At the time of executing a tracking servo process on a BD (Blu-ray Disc)-R capable of recording information selectively on a land track or a groove track during loading of the BD-R, the polarity of a tracking error signal adapted to trace of the land or the groove is temporarily determined on the basis of statistical information indicative of a result of a statistic taken to see which one of the BD-R that records information on the land track and the BD-R that records information on the groove track is more frequently used. On the basis of the tracking error signal of the polarity, an optical pickup is driven to execute tracking servo.
摘要翻译：本发明提供一种能够在装载信息记录介质时在短时间内正常执行跟踪伺服的信息再现/记录装置。在BD-R装载期间，在能够在陆地轨道或槽道上选择性地记录信息的BD（蓝光光盘）-R执行跟踪伺服处理时，适用于基于统计信息的统计信息暂时确定陆地或凹槽的痕迹，该统计信息表示统计量的结果，以查看在陆地轨道上记录信息的BD-R中哪一个以及记录关于陆地轨道上的信息的BD-R 凹槽轨道更频繁地使用。基于极性的跟踪误差信号，驱动光学拾取器执行跟踪伺服。

9. 发明申请

US20070177468A1 Access unit, access method, access program, and control unit 有权
标题翻译：访问单元，访问方式，访问程序和控制单元
公开(公告)号：US20070177468A1
公开(公告)日：2007-08-02
申请号：US10591327
申请日：2005-10-21
申请人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
发明人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
IPC分类号： G11B21/08
CPC分类号： G11B7/1267 , G11B7/00736
摘要： An access unit, an access method, an access program and a control unit are provided which are capable of shortening the seek time of an optical head for a test record and a test regeneration. A record medium 200 includes a user area for recording user data which can be recorded and regenerated based on an instruction given by a user; a recording-system circuit section 120 records test data based on a predetermined test condition in the user area; a regeneration-system circuit section 130 reads the test data recorded in the user area by the recording-system circuit section 120; and a system control circuit 102 refers to the test data read by the regeneration-system circuit section 130 and adjusts an access parameter for accessing the record medium 200.
摘要翻译：提供一种存取单元，访问方法，访问程序和控制单元，其能够缩短用于测试记录和测试再生的光学头的寻道时间。记录介质200包括用于记录可以基于用户给出的指令来记录和再生的用户数据的用户区域; 记录系统电路部分120根据用户区域中的预定测试条件记录测试数据; 再生系统电路部分130通过记录系统电路部分120读取记录在用户区域中的测试数据; 并且系统控制电路102参考由再生系统电路部分130读取的测试数据，并调整用于访问记录介质200的访问参数。

10. 发明授权

US07193941B2 Optical disc drive with clock synchronization and rotational speed detection 失效
标题翻译：具有时钟同步和转速检测的光盘驱动器
公开(公告)号：US07193941B2
公开(公告)日：2007-03-20
申请号：US10401449
申请日：2003-03-28
申请人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
发明人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
IPC分类号： G11B27/10
CPC分类号： G11B7/0053 , G11B7/08517 , G11B19/28 , G11B20/10 , G11B20/1258 , G11B27/24 , G11B2020/10916 , G11B2020/1239 , G11B2020/1267 , G11B2020/1287 , G11B2020/1288 , G11B2220/216 , G11B2220/2537 , G11B2220/2541 , G11B2220/2562 , G11B2220/2575
摘要： An optical disc drive includes: a motor for rotating an optical disc thereon; a photoelectric transducer for converting a light beam, reflected from or transmitted through the disc, into an electric signal; a clock sync signal reader for extracting and outputting a read signal, representing a clock synchronization mark, from the electric signal; a clock generator for generating a clock signal having a variable frequency; a phase locking controller for controlling the clock generator to synchronize the clock signal in phase with the output signal of the clock sync signal reader; and a mechanism for displacing a light beam spot toward a target track on the disc. During a seek operation of displacing the light beam spot toward the target track, the clock generator is controlled to obtain a frequency to be expected on the target track and output a clock signal having the expected frequency.
摘要翻译：光盘驱动器包括：用于在其上旋转光盘的马达; 用于将从光盘反射或透过光盘的光束转换为电信号的光电传感器; 时钟同步信号读取器，用于从电信号中提取并输出表示时钟同步标记的读取信号; 时钟发生器，用于产生具有可变频率的时钟信号; 相位锁定控制器，用于控制时钟发生器，使时钟信号同步于时钟同步信号读取器的输出信号; 以及用于将光束点移向盘上的目标轨道的机构。在将光束点移向目标轨道的寻道操作期间，控制时钟发生器以获得目标轨道上预期的频率并输出具有预期频率的时钟信号。

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