公开(公告)号：US20100246367A1

公开(公告)日：2010-09-30

申请号：US12720151

申请日：2010-03-09

申请人： Hideaki OKANO ,  Takashi Usui

发明人： Hideaki OKANO ,  Takashi Usui

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G03H1/16 ,  G03H1/265 ,  G11B7/0065 ,  G11B7/00781

摘要： An optical information recording method includes the following steps. A converting step is converting a light beam into an information beam carrying information by using a spatial beam modulator. A focusing step is focusing the information beam on an optical information recording medium including an information recording layer. An irradiating step is irradiating the optical information recording medium with a reference beam and the information beam so that the reference beam and the information beam intersect with each other on the information recording layer by using an optical component. A rotating step is rotating the optical information recording medium or the optical component by using a drive unit for performing angle-multiplex recording. A management information recording step is recording management information at two or more relative angles having an angle interval smaller than twice at least a first null angle.

摘要翻译： 光信息记录方法包括以下步骤。 A转换步骤是通过使用空间光束调制器将光束转换为携带信息的信息光束。 聚焦步骤将信息光束聚焦在包括信息记录层的光学信息记录介质上。 照射步骤是用参考光束和信息光束照射光学信息记录介质，使得参考光束和信息光束通过使用光学部件在信息记录层上彼此相交。 旋转步骤通过使用用于执行角度多路复用记录的驱动单元旋转光学信息记录介质或光学部件。 管理信息记录步骤是将角度间隔小于两倍至少第一空角的两个或多个相对角度记录管理信息。

公开(公告)号：US20100228768A1

公开(公告)日：2010-09-09

申请号：US12714932

申请日：2010-03-01

申请人： Hiroyuki YAMASUGE ,  Shinichiro Abe ,  Shigeru Arisawa ,  Takashi Usui ,  Seiji Esaka ,  Shuhei Sonoda ,  Masayuki Takada

发明人： Hiroyuki YAMASUGE ,  Shinichiro Abe ,  Shigeru Arisawa ,  Takashi Usui ,  Seiji Esaka ,  Shuhei Sonoda ,  Masayuki Takada

IPC分类号： G06F15/16 ,  G06F17/30

CPC分类号： G06F16/273 ,  G06F16/275

摘要： An information providing server of present invention including a state information acquiring unit for acquiring state information related to a state of a user using a client terminal detected at the client terminal connected through a communication network, a database for accumulating data of a content to be used by the user, a selection unit for selecting a part of the data accumulated in the database based on the state information, and a transmission unit for transmitting the data selected by the selection unit to the client terminal.

摘要翻译： 本发明的信息提供服务器包括：状态信息获取单元，用于使用在通过通信网络连接的客户终端处检测到的客户终端获取与用户的状态相关的状态信息，用于累积要使用的内容的数据的数据库 由用户根据状态信息选择存储在数据库中的部分数据的选择单元，以及用于将由选择单元选择的数据发送给客户终端的发送单元。

公开(公告)号：US20090225910A1

公开(公告)日：2009-09-10

申请号：US12426733

申请日：2009-04-20

申请人： Mitsuhiro SUZUKI ,  Chihiro Fujita ,  Takashi Usui

发明人： Mitsuhiro SUZUKI ,  Chihiro Fujita ,  Takashi Usui

IPC分类号： H04L27/06

CPC分类号： H04L27/2605

摘要： Multi-carrier transmission is performed without inserting a repetitive signal into guard interval periods. A transmitter provides guard interval periods by using a null signal to save transmission power and prevent the deterioration of the SN ratio. Delayed waves at the head of each received symbol cause high-frequency waves to occur and carriers to interfere with one another. Accordingly, a receiver adds a component following each received symbol to a delayed-wave component at the head of the received symbol. As a result, the delayed-wave component at the head of the received symbol and the added component become continuous in wave form and subcarriers do not interfere with each other.

公开(公告)号：US20090109815A1

公开(公告)日：2009-04-30

申请号：US12260920

申请日：2008-10-29

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, an optical disc device includes a light source portion which applies laser light to an optical disc, a drive portion which supplies a drive current to the light source portion so as to cause the light source portion to apply laser light of light pulses having relaxation oscillation, and a controller which controls the drive portion to supply a drive current so as to cause the light source portion to emit laser light of (n−1)×N (N is an integral number) light pulses having relaxation oscillation with respect to a mark with recording mark length nT (n: integral number, T: channel clock) to be recorded on the optical disc.

摘要翻译： 根据一个实施例，光盘装置包括向光盘施加激光的光源部分，向光源部分提供驱动电流以使光源部分施加光的激光的驱动部分 具有弛豫振荡的脉冲和控制驱动部分提供驱动电流以使光源部分发出具有弛豫振荡的（n-1）×N（N为整数）光脉冲的激光的控制器， 相对于要记录在光盘上的具有记录标记长度nT（n：整数，T：通道时钟）的标记。

公开(公告)号：US20090109808A1

公开(公告)日：2009-04-30

申请号：US12208658

申请日：2008-09-11

申请人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

发明人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  H01S5/0428

摘要： According to one embodiment, a laser drive circuit which supplies a drive current to a laser element which outputs light at a predetermined wavelength, and a laser control circuit which supplies a predetermined timing pulse for generation of relaxation oscillation in a laser drive current supplied to the laser drive circuit, the laser control circuit supplying a laser drive current higher than a threshold value which is supplied from the laser drive circuit to the laser element to enable laser light to be output from the laser element, the laser control circuit setting the laser drive current to a level lower than the threshold value on the basis of the timing pulse.

摘要翻译： 根据一个实施例，提供驱动电流到激光元件的激光驱动电路，激光元件输出预定波长的光;以及激光控制电路，其提供预定的定时脉冲，以产生提供给 激光驱动电路，激光控制电路提供高于从激光驱动电路提供给激光元件的阈值的激光驱动电流，以使激光能够从激光元件输出，激光控制电路设置激光驱动 基于定时脉冲将电流电流降至低于阈值的电平。

公开(公告)号：US20080101205A1

公开(公告)日：2008-05-01

申请号：US11928123

申请日：2007-10-30

申请人： Takashi Usui ,  Kazuto Kuroda

发明人： Takashi Usui ,  Kazuto Kuroda

IPC分类号： G11B7/00

CPC分类号： G11B7/1263

摘要： An optical disc apparatus includes a laser-light emitting element configured to emit laser light onto a writable and readable optical disc, a power detecting unit configured to detect a light power of the laser light emitted from the laser-light emitting element, and a power control unit configured to control a driving amount for the laser-light emitting element by feedback control so that the detected light power coincides with a target light power. The power control unit holds a driving amount obtained during a previous recording period until a current recording period, and uses the held driving amount as an initial driving amount for the feedback control in the current recording period when the current recording period starts.

摘要翻译： 一种光盘装置，包括：激光发光元件，被配置为向可写和可读光盘发射激光;功率检测单元，被配置为检测从激光发射元件发射的激光的光功率;以及功率 控制单元，被配置为通过反馈控制来控制激光发光元件的驱动量，使得检测到的光功率与目标光功率一致。 功率控制单元保持在前一个记录周期中获得的驱动量，直到当前记录周期，并且在当前记录周期开始的当前记录周期中，将保持的驱动量用作反馈控制的初始驱动量。

公开(公告)号：US20060171276A1

公开(公告)日：2006-08-03

申请号：US11328263

申请日：2006-01-10

申请人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

发明人： Takashi Usui ,  Yutaka Kashihara ,  Chosaku Noda ,  Akihito Ogawa

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B7/00736 ,  G11B27/034 ,  G11B27/24

摘要： An attempt is made to make it possible to efficiently perform the finalizing process and closing process in a short period of time. When the border closing or finalizing process is performed after user data is recorded, latest recording management data (RMD) is recorded in a recording management data duplication zone (RDZ) of a data lead-in area, latest recording management data (RMD) is recorded in an unrecorded area of a present recording management zone (RMZ) and R physical format information (R-PFI) is recorded in an R physical format information zone (R-PFIZ) in a first step and a padding process is performed for at least a discontinuous area in the data area and a border-out is lastly recorded in a second step.

摘要翻译： 尝试使其能够在短时间内有效地执行最终处理和结束处理。 当在记录用户数据之后执行边界关闭或完成处理时，最新记录管理数据（RMD）被记录在数据导入区的记录管理数据复制区（RDZ）中，最新的记录管理数据（RMD）是 记录在当前记录管理区域（RMZ）的未记录区域中，并且R物理格式信息（R-PFI）被记录在R物理格式信息区域（R-PFIZ）中，并且执行填充处理 在第二步骤中最后记录数据区域中的不连续区域和边界输出。

公开(公告)号：US06515960B1

公开(公告)日：2003-02-04

申请号：US09139892

申请日：1998-08-25

申请人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

发明人： Takashi Usui ,  Hisaki Hiraiwa ,  Takehiro Sugita

IPC分类号： H04J1100

CPC分类号： H04L5/023

摘要： A radio communication system is formed of a plurality of radio communication terminals and a radio communication control terminal for controlling radio communication. Data communication is performed between each radio communication terminal and the radio communication control terminal by the orthogonal frequency division multiplexing (OFDM) method. Data is multiplexed with a frame structure having the specified number of symbols by the TDMA method. The radio communication control terminal transmits a synchronization acquisition code to the plurality of radio communication terminals in each frame. Each radio communication terminal receives the synchronization acquisition code, sets a timer according to the receiving timing of the synchronization acquisition code, and sets the transmission timing and the receiving timing with the timer being used as the reference. With the use of the OFDM method, demodulation is performed without an error even if jitter occurs. Since the timing of transmission and receiving is set with an M sequence at the top of a frame being used as a reference, the timer of each radio communication terminal is set to the same time. With the use of this time information, only necessary symbols in a frame are demodulated to reproduce the data at receiving.

摘要翻译： 无线电通信系统由多个无线电通信终端和用于控制无线电通信的无线电通信控制终端形成。 通过正交频分复用（OFDM）方法在各无线通信终端与无线通信控制终端之间进行数据通信。 数据通过TDMA方法与具有指定数目的符号的帧结构复用。 无线通信控制终端在各帧中向多个无线通信终端发送同步捕获码。 每个无线电通信终端接收同步捕获码，根据同步捕获码的接收定时设置定时器，并且将定时器用作基准来设置发送定时和接收定时。 通过使用OFDM方式，即使发生抖动也能够进行解调。 由于以作为参考的帧的顶部的M序列来设置发送和接收的定时，因此每个无线电通信终端的定时器被设置为相同的时间。 通过使用这个时间信息，仅解码帧中必需的符号以在接收时再现数据。

公开(公告)号：US06453118B2

公开(公告)日：2002-09-17

申请号：US08968118

申请日：1997-11-12

申请人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

发明人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

IPC分类号： H04N591

CPC分类号： H04N5/913 ,  H04N2005/91314 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/9135

摘要： The level of the spectrally spread anti-duplication control signal to be superimposed on an information signal such as a video signal is changed by using a random number RD generated by a random number generation unit 163. Since it is difficult to follow after the change of the level of the spectrally spread anti-duplication control signal, elimination of the anti-duplication control signal from the information signal is made further difficult. This can reliably provide the anti-duplication control signal to the receiving side.

摘要翻译： 通过使用由随机数生成单元163产生的随机数RD来改变要叠加在诸如视频信号的信息信号上的频谱扩展的反复制控制信号的电平。由于在随机数生成单元163的改变之后难以遵循 频谱扩展的反复制控制信号的电平，信息信号的反复制控制信号的消除进一步困难。 这可以可靠地将反复制控制信号提供给接收侧。

公开(公告)号：US06389137B1

公开(公告)日：2002-05-14

申请号：US08951027

申请日：1997-10-15

申请人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

发明人： Takehiro Sugita ,  Akira Ogino ,  Takashi Usui

IPC分类号： H04K110

CPC分类号： H04N5/913 ,  H04N2005/91314 ,  H04N2005/91321 ,  H04N2005/91328 ,  H04N2005/9135

摘要： A playback device generates a Pseudo-random noise (PN) code sequence repeatedly with a predetermined period in synchronism with a video sync signal. An anti-duplication control signal is spectrally spread using this generated PN code sequence, is superimposed on the video signal, and is output. A PN code sequence having the same timing and code pattern as the PN code sequence used in the playback device is similarly generated based on the video sync signal on the receiving side which receives the output video signal. Using this PN code sequence, reverse spectral spread is performed, the anti-duplication control signal superimposed on the video signal is extracted, and anti-duplication control is performed according to the extracted anti-duplication control signal.

摘要翻译： 重放装置与视频同步信号同步地以预定周期重复产生伪随机噪声（PN）码序列。 使用该生成的PN码序列对反复制控制信号进行频谱扩展，叠加在视频信号上并被输出。 基于接收到输出视频信号的接收侧的视频同步信号，类似地产生具有与重放装置中使用的PN码序列相同的定时和码型的PN码序列。 使用该PN码序列，执行反向频谱扩展，提取叠加在视频信号上的反复制控制信号，并根据提取的反复制控制信号进行反复制控制。