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51. 发明授权

US06988063B2 System and method for accurate grammar analysis using a part-of-speech tagged (POST) parser and learners' model 有权
标题翻译：使用部分语音标签（POST）解析器和学习者模型进行准确语法分析的系统和方法
公开(公告)号：US06988063B2
公开(公告)日：2006-01-17
申请号：US10072973
申请日：2002-02-12
申请人： Naoyuki Tokuda , Liang Chen , Hiroyuki Sasai
发明人： Naoyuki Tokuda , Liang Chen , Hiroyuki Sasai
IPC分类号： G06F17/27
CPC分类号： G06F17/274
摘要： An accurate grammar analyzer that works effectively even with error-ridden sentences input by learners, based on a context-free probabilistic statistical POST (part-of-speech tagged) parser, for a template-automation-based computer-assisted language learning system. For any keyed-in sentence, the parser finds a closest correct sentence to the keyed-in sentence from among the embedded template paths exploiting a highest similarity value, and generates a grammar tree for the correct sentence where some ambiguous words are preassigned by expert language teachers. The system marks the errors under the leaves of the grammar tree by identifying the differences between the keyed-in sentence and the grammar tree of the correct sentence as errors committed by learners. By identifying most frequently recurring grammatical errors of each student, the system sets up a learner's model, providing a unique level of contingent remediation most appropriate to each learner involved.
摘要翻译：基于模板自动化的计算机辅助语言学习系统，基于无上下文的概率统计POST（部分语音标记）解析器，准确的语法分析器可以有效地工作，甚至由学习者输入的错误语句。对于任何键入句子，解析器从使用最高相似度值的嵌入式模板路径中找到与键入句子最接近的正确句子，并为正确的句子生成语法树，其中一些歧义词由专家语言预先分配教师。系统通过将正确句子的键入句和语法树之间的差异识别为学习者所犯的错误，来标记语法树叶下的错误。通过确定每个学生最常见的语法错误，系统建立了一个学习者的模型，为每个学习者提供了最适合的或有补救措施。

52. 发明授权

US06598019B1 Evaluation method, apparatus, and recording medium using optimum template pattern determination method, apparatus and optimum template pattern 有权
标题翻译：评估方法，装置和记录介质，使用最佳模板图案确定方法，装置和最佳模板图案
公开(公告)号：US06598019B1
公开(公告)日：2003-07-22
申请号：US09597269
申请日：2000-06-20
申请人： Naoyuki Tokuda , Hiroyuki Sasai
发明人： Naoyuki Tokuda , Hiroyuki Sasai
IPC分类号： G10L1528
CPC分类号： G10L15/26
摘要： To improve the precision in correction of an input sentence by using a template pattern for model sentence. A plurality of template patterns for the model sentence are provided beforehand. Each of the template patterns is regarded as a plurality of templates of words/phrases based on expertise of language teachers with scores assigned to the words according to their importance. The scores and subsequently the input sentence are read and analyzed in comparison with each of the template patterns and the total of scores of matching words is calculated. A template pattern having the highest total score is selected as an optimum template pattern and the input sentence is corrected using the optimum template pattern. This method improves the likelihood that a template pattern containing a larger number of important words is selected as the optimum template pattern.
摘要翻译：通过使用模型句子的模板模式来提高输入句的校正精度。预先提供用于模型句子的多个模板模式。每个模板模式被视为基于语言教师的专业知识的单词/短语的多个模板，其具有根据其重要性分配给单词的分数。与每个模板模式相比较，分析和随后的输入句被读取和分析，并计算匹配词的总分数。选择具有最高总分数的模板图案作为最佳模板图案，并且使用最佳模板图案校正输入句子。该方法提高了包含更多数量的重要单词的模板模式被选择为最佳模板模式的可能性。

53. 发明授权

US5850303A Optical transmission system and optical transmission device used therefor 失效
标题翻译：光传输系统及其使用的光传输设备
公开(公告)号：US5850303A
公开(公告)日：1998-12-15
申请号：US775247
申请日：1996-12-30
申请人： Hiroaki Yamamoto , Hiroyuki Sasai , Susumu Morikura , Katsuyuki Fujito
发明人： Hiroaki Yamamoto , Hiroyuki Sasai , Susumu Morikura , Katsuyuki Fujito
IPC分类号： H04B10/155 , H04J14/02 , H04B10/04
CPC分类号： H04J14/02 , H04B10/504 , H04B10/506 , H04J14/0224
摘要： A signal processing circuit 113 subjects a transmission signal outputted from a signal source 111 and a carrier outputted from a carrier generation circuit 112 to predetermined signal processing, to generate a modulation signal amplitude-modulated by the transmission signal and so adapted that its envelop on the high level side (or on the low level side) has a shape analogous to the waveform of the transmission signal and its envelope on the low level side (or on the high level side) is at an approximately constant level. A light source 114 converts the modulation signal into a light intensity modulation signal, and outputs the light intensity modulation signal to an optical coupler 120. The above-mentioned signal processing is performed by the signal processing circuit 113, whereby the spectrum distribution of the light signal outputted from the light source 114 is dispersed, and the peak value of light spectra is decreased. The peak value of beat noise produced after receiving is proportional to the peak value of the light spectra, whereby the peak value of the beat noise is also decreased.
摘要翻译：信号处理电路113对从信号源111输出的发送信号和从载波生成电路112输出的载波进行规定的信号处理，生成由发送信号进行了幅度调制的调制信号，高电平侧（或低电平侧）具有与发送信号的波形类似的形状，并且其低电平侧（或高电平侧）的包络处于大致恒定的水平。光源114将调制信号转换为光强度调制信号，并将光强度调制信号输出到光耦合器120.由信号处理电路113进行上述信号处理，由此光的频谱分布从光源114输出的信号被分散，光谱的峰值减小。接收后产生的拍噪噪声的峰值与光谱的峰值成比例，从而峰值噪声也降低。

54. 发明授权

US07912379B2 Optical transmitter circuit 失效
标题翻译：光发射机电路
公开(公告)号：US07912379B2
公开(公告)日：2011-03-22
申请号：US12280076
申请日：2007-02-20
申请人： Kazutoshi Hase , Hiroyuki Sasai , Tomoaki Ieda
发明人： Kazutoshi Hase , Hiroyuki Sasai , Tomoaki Ieda
IPC分类号： H04B10/20
CPC分类号： H04B10/502 , H04B10/564
摘要： A peaking current generating section generates a spire-shaped peaking current that is in synchronism with the transitions of the digital signal, at the rising edge and the falling edge. A light emitting element driving section produces a driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal and the peaking current. Then, the light emitting element driving section drives a light emitting element by using the driving current. A signal analysis section analyzes the digital signal so as to set a control signal based on the pulse width of the digital signal. A clipping section clips the peaking current of the driving current according to the control signal set by the signal analysis section.
摘要翻译：峰值电流产生部分在上升沿和下降沿产生与数字信号的转变同步的尖峰形峰值电流。发光元件驱动部产生通过根据数字信号的振幅和峰值电流组合信号幅度电流而获得的驱动电流。然后，发光元件驱动部通过使用驱动电流来驱动发光元件。信号分析部分分析数字信号，以便根据数字信号的脉冲宽度来设置控制信号。剪辑部分根据由信号分析部分设置的控制信号剪切驱动电流的峰值电流。

55. 发明授权

US07885547B2 Optical wireless transmission system for performing optical space transmission, and optical transmitter used therein 失效
标题翻译：用于执行光空间传输的光无线传输系统及其中使用的光发射机
公开(公告)号：US07885547B2
公开(公告)日：2011-02-08
申请号：US11934925
申请日：2007-11-05
申请人： Mariko Nakaso , Hiroyuki Sasai
发明人： Mariko Nakaso , Hiroyuki Sasai
IPC分类号： H04B10/00
CPC分类号： H04B10/116 , H04B10/1143
摘要： An optical transmitter for performing high-rate data communication by means of optical space transmission is provided, which can reliably perform optical axis adjustment manually and visually, and can prevent a device from being made large in size and manufacturing cost of the device from being increased by using an simply-constructed optical transmitter. Thus, the optical transmitter of the present invention comprises an incident beam restriction section operable to allow only a visible beam which is emitted by a terminal located within a range in which an infrared beam is emitted and incident thereon to pass therethrough, a reflection section operable to reflect the visible beam which has passed through the incident beam restriction section, and a light source operable to emit the infrared beam to pass through the reflection section according to a data transmission request signal from the terminal.
摘要翻译：提供了一种通过光学空间传输进行高速率数据通信的光发射机，其可以可靠地可靠地执行光轴调节，并且可以防止设备尺寸变大并且使设备的制造成本增加通过使用简单构造的光发射机。因此，本发明的光发射器包括入射光束限制部分，其可操作以仅允许位于发射红外光束并入射到其上的入射范围内的终端发射的可见光束通过其中;可反射部分，其可操作以反射已经通过入射光束限制部分的可见光束，以及可操作以根据来自终端的数据传输请求信号发射红外光束以通过反射部分的光源。

56. 发明授权

US07813055B2 Light receiver and Fresnel lens used therein 有权
标题翻译：光接收器和菲涅耳透镜
公开(公告)号：US07813055B2
公开(公告)日：2010-10-12
申请号：US12143872
申请日：2008-06-23
申请人： Hideo Yasumoto , Hiroyuki Sasai
发明人： Hideo Yasumoto , Hiroyuki Sasai
IPC分类号： G02B3/08
CPC分类号： G02B3/08 , G02B3/10
摘要： A light receiver comprises a Fresnel lens for collecting light signals, and a light receiving element disposed closer to the Fresnel lens than the focal point of the Fresnel lens for receiving the light signals collected by the Fresnel lens. The Fresnel lens comprises a lens surface group having a plurality of lens surfaces, and a back cut surface group having a plurality of back cut surfaces connecting the lens surfaces. The back cut surfaces are inclined with respect to the center axis of the Fresnel lens. Thus, the light receiver has a high light collection efficiency of light signals incident within a certain acceptance angle.
摘要翻译：光接收器包括用于收集光信号的菲涅尔透镜，以及靠近菲涅耳透镜的光接收元件，其比用于接收由菲涅尔透镜收集的光信号的菲涅尔透镜的焦点更靠近菲涅尔透镜。菲涅耳透镜包括具有多个透镜表面的透镜表面组，以及具有连接透镜表面的多个后表面的后切面组。后切面相对于菲涅耳透镜的中心轴线倾斜。因此，光接收器具有在一定接受角内入射的光信号的高的光收集效率。

57. 发明授权

US07756522B2 Dynamic traffic control method and device for the same 失效
标题翻译：动态流量控制方法和设备相同
公开(公告)号：US07756522B2
公开(公告)日：2010-07-13
申请号：US10566545
申请日：2003-08-29
申请人： Mitsugi Nomiya , Hiroyasu Taguchi , Kazuyoshi Nakajima , Miya Inami , Yayoi Itoh , Kiyomi Hasesaka , Hiroyuki Sasai
发明人： Mitsugi Nomiya , Hiroyasu Taguchi , Kazuyoshi Nakajima , Miya Inami , Yayoi Itoh , Kiyomi Hasesaka , Hiroyuki Sasai
IPC分类号： H04L12/42 , H04L12/403
CPC分类号： H04W16/06
摘要： A dynamic traffic control method is disclosed that controls traffic in a radio network system where a radio network controller causes plural radio base stations to change radio outputs. The method comprises a step of measuring a channel utilization rate of each of cells of the radio base stations every predetermined period, a step of predicting whether the rate of a first cell of the cells reaches an implementation level, at which radio output control over the first cell is required, in a next period based on a movement of the rate in the past if the channel utilization rate of the first cell is at a warning level, and a step of reducing the radio output of the first cell and increasing the radio output of a second cell adjacent to the first cell if the rate of the first cell is predicted to reach the implementation level.
摘要翻译：公开了一种控制无线电网络系统中无线电网络控制器使多个无线电基站改变无线电输出的业务的动态业务控制方法。该方法包括以下步骤：每隔预定周期测量无线基站的每个小区的信道利用率;步骤，预测小区的第一小区的速率是否达到实现级别，在该级别上进行无线电输出控制如果第一小区的信道利用率处于警告级，则基于过去的速率的移动在下一个周期中需要第一小区，以及减少第一小区的无线电输出并增加无线电的步骤如果预测第一小区的速率达到实现级别，则与第一小区相邻的第二小区的输出。

58. 发明授权

US07751722B2 Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US07751722B2
公开(公告)日：2010-07-06
申请号：US10537171
申请日：2004-02-06
申请人： Hiroyuki Sasai
发明人： Hiroyuki Sasai
IPC分类号： H04B10/00
CPC分类号： H04B10/25758
摘要： To provide an optical transmission system which cancels out noise components and whose construction cost is lower than that of the conventional system, the present invention is an optical transmission system for transmitting an optical signal from an optical transmitter to an optical receiver and outputting an output electrical signal after a noise canceling process is performed. The optical receiver and transmitter are connected by one optical fiber, through which an optical signal is transmitted before being intensity-modulated. The optical receiver includes; a first processing unit receiving an optical signal, intensity-modulating the received optical signal, and splitting the intensity-modulated optical signal into two optical signals whose respective intensity-modulated components are in antiphase; first and second optical transmission fibers transmitting the two optical signals respectively; and a second processing unit converting the two optical signals into electrical signals respectively, and generating an output electrical signal by performing differential amplification.
摘要翻译：为了提供消除噪声成分并且其结构成本低于常规系统的光传输系统，本发明是一种用于将光信号从光发射机发送到光接收机的光传输系统，并输出输出电执行噪声消除处理后的信号。光接收机和发射机通过一个光纤连接，通过该光纤在被强度调制之前传输光信号。光接收机包括：接收光信号的第一处理单元，对所接收的光信号进行强度调制，以及将强度调制的光信号分解成其强度调制分量反相的两个光信号; 第一和第二光传输光纤分别传输两个光信号; 以及第二处理单元，分别将两个光信号转换为电信号，并通过执行差分放大来产生输出电信号。

59. 发明授权

US07603693B2 CATV uplink optical transmission system 失效
标题翻译： CATV上行光传输系统
公开(公告)号：US07603693B2
公开(公告)日：2009-10-13
申请号：US10437175
申请日：2003-05-14
申请人： Kouichi Masuda , Hiroyuki Sasai , Shinichi Kido , Hideyuki Sogabe
发明人： Kouichi Masuda , Hiroyuki Sasai , Shinichi Kido , Hideyuki Sogabe
IPC分类号： H04N7/173
CPC分类号： H04B10/272 , H04B10/2537 , H04B10/27
摘要： A CATV station apparatus subjects received optical signals to processes such as optical-electrical conversion, signal separation, coupling, and demodulation for obtaining an uplink signal. A received photocurrent monitoring section compares a received photocurrent at a optical receiving section with a predetermined reference current. If the received photocurrent is equal to or higher than the reference current, an amplifying section amplifies a signal output from a signal separating section at a predetermined level. If the received photocurrent is lower than the reference current, on the other hand, it is determined that a non-linear phenomenon, such as stimulated Brillouin scattering, has occurred in an optical fiber. The amplifying section then outputs a signal at a level which does not affect, even after being coupled with other signals, communications performed by other optical transmission systems.
摘要翻译： CATV站装置接收光信号以进行光电转换，信号分离，耦合和解调等处理，以获得上行链路信号。接收光电流监测部分将光接收部分的接收光电流与预定参考电流进行比较。如果所接收的光电流等于或高于参考电流，则放大部分将从信号分离部分输出的信号放大到预定电平。另一方面，如果接收到的光电流低于参考电流，则确定在光纤中发生诸如受激布里渊散射之类的非线性现象。然后，放大部分即使在与其他信号耦合之后也以不影响其他光传输系统执行的通信的电平输出信号。

60. 发明申请

US20090097856A1 RECEIVER APPARATUS FOR USE IN OPTICAL SPACE TRANSMISSION SYSTEM 审中-公开
标题翻译：用于光学空间传输系统的接收装置
公开(公告)号：US20090097856A1
公开(公告)日：2009-04-16
申请号：US12295792
申请日：2007-04-03
申请人： Hiroyuki Sasai , Tsutomu Niiho , Mariko Nakaso
发明人： Hiroyuki Sasai , Tsutomu Niiho , Mariko Nakaso
IPC分类号： H04B10/10
CPC分类号： H04B10/1141
摘要： There included are a plurality of light receiving sections (121, 122) for receiving a plurality of optical signals (R1, R2) and respectively converting the received optical signals to a plurality of electrical signals (r1, r2); a first calculating section (130) for subjecting the plurality of electrical signals (r1, r2) to a process of canceling interference components occurring due to propagation of the plurality of optical signals through space; and a second calculating section (140) for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a distortion occurring due to optical beat interference has a value less than or equal to a predetermined permissible value.
摘要翻译：包括多个光接收部分（121,122），用于接收多个光信号（R1，R2）并分别将所接收的光信号转换成多个电信号（r1，r2）; 第一计算部分，用于对多个电信号（r1，r2）进行消除由于多个光信号通过空间传播而产生的干扰分量的处理; 以及第二计算部分，用于针对由第一计算部分消除了干扰分量的多个电信号中的每一个，计算由于光学差拍干扰而产生的失真是否具有小于或等于的值，等于预定的允许值。

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