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21. 发明授权

US5056116A Data demodulation apparatus 失效
标题翻译：数据解调装置
公开(公告)号：US5056116A
公开(公告)日：1991-10-08
申请号：US357737
申请日：1989-05-26
申请人： Toshiyuki Shimada , Kazuhiro Aoki , Akira Kurahashi , Noboru Kikuchi
发明人： Toshiyuki Shimada , Kazuhiro Aoki , Akira Kurahashi , Noboru Kikuchi
IPC分类号： G11B20/14 , H03H17/08 , H04L7/027 , H04L25/40
CPC分类号： G11B20/10037 , G11B20/1426
摘要： A data demodulation apparatus applicable to a playback input signal from a digital recording apparatus, which executes A/D conversion of the input signal with a sampling period that is equal to the bit separation of that signal, and obtains phase data for reproducing the phase of the clock signal component of the input signal each time that a "1" state bit is detected in a sampling period. For each sampling period, or set of successive sampling periods, data values are derived which respectively represent a number of bit positions of the input signal within that period and the presence or absence of "1" state bits in the period, and these data values are converted to serial form to respectively constitute a reproduced clock signal and a detected data signal.

22. 发明申请

US20080117924A1 DATA RELAY UNIT 审中-公开
标题翻译：数据继电器
公开(公告)号：US20080117924A1
公开(公告)日：2008-05-22
申请号：US11942850
申请日：2007-11-20
申请人： Takayoshi Nakamura , Hiroshi Matsuda , Katsuhiko Furuta , Katsutoshi Haruna , Akira Kurahashi , Keiichi Aoyama , Daisuke Manabe
发明人： Takayoshi Nakamura , Hiroshi Matsuda , Katsuhiko Furuta , Katsutoshi Haruna , Akira Kurahashi , Keiichi Aoyama , Daisuke Manabe
IPC分类号： H04L12/66
CPC分类号： H04L12/66
摘要： A data relay unit capable of relaying data communication between first and second networks interchanging different structures of data, a gateway (GW) and a method are provided. An identifier is assigned to transmission data and reception data exchanged in a GW unit. A data conversion section specifies a conversion process using reception data for generating transmission data for each transmission data piece identified by an identifier and uses a conversion table to store conversion processes. The data conversion section can generate intended transmission data based on an identifier of the transmission data to be transmitted by selecting and executing a necessary conversion process from the conversion table. Even when a method of generating transmission data is added or changed, it is only necessary to add or change a conversion process in the conversion table.
摘要翻译：提供能够中继第一和第二网络之间的数据通信交换数据的不同结构的数据中继单元，网关（GW）和方法。将标识符分配给在GW单元中交换的发送数据和接收数据。数据转换部分使用用于产生由标识符识别的每个发送数据片段的发送数据的接收数据来指定转换处理，并使用转换表来存储转换处理。数据转换部可以通过从转换表中选择并执行必要的转换处理，基于要发送的发送数据的标识符来生成预期的发送数据。即使添加或改变生成传输数据的方法，只需要在转换表中添加或更改转换处理。

23. 再颁专利

USRE40312E1 Digital data transmitting method 有权
标题翻译：数字数据传输方式
公开(公告)号：USRE40312E1
公开(公告)日：2008-05-13
申请号：US10785864
申请日：2004-02-25
申请人： Tadashi Kojima , Koichi Hirayama , Hisashi Yamada , Yoshiaki Moriyama , Fumihiko Yokogawa , Takao Arai , Toshifumi Takeuchi , Shinichi Tanaka , Akira Kurahashi , Toshiyuki Shimada
发明人： Tadashi Kojima , Koichi Hirayama , Hisashi Yamada , Yoshiaki Moriyama , Fumihiko Yokogawa , Takao Arai , Toshifumi Takeuchi , Shinichi Tanaka , Akira Kurahashi , Toshiyuki Shimada
IPC分类号： H04B14/04
CPC分类号： H03M5/145 , G11B20/1426 , H04L7/041 , H04L25/4906
摘要： A transmitting method of digital data whereby information data can be reproduced at a high precision. In order to retain digital data in sectors comprising a plurality of sync frames and sequentially transmit, the sync frame is comprised of the sync signal and the run length limited code which satisfies the limitations of the minimum run length and the maximum run length, and the sync signal includes the sync pattern constituted by a bit pattern of a run length that is longer than the maximum run length by only 3T and addition bit patterns which are arranged before and after the bit pattern and each of which has a urn length that is longer than the minimum run length. The sync signal includes a specific code which indicates a position in the sector and which enables the DC control to be performed.
摘要翻译：数字数据的发送方法，可以高精度地再现信息数据。为了在包括多个同步帧的扇区中保留数字数据并顺序地发送，同步帧包括满足最小游程长度和最大游程长度的限制的同步信号和游程长度限制码，并且同步信号包括由游程长度比最大游程长度仅3T的位模式构成的同步模式，以及排列在位模式之前和之后的相加位模式，并且每个模式的urn长度为长于最小游程长度。同步信号包括指示扇区中的位置并且能够执行DC控制的特定代码。

24. 发明授权

US06597007B2 Optical position detection device and distance measurement device 失效
公开(公告)号：US06597007B2
公开(公告)日：2003-07-22
申请号：US10005844
申请日：2001-12-07
申请人： Seiichiro Mizuno , Akira Kurahashi , Izumi Adachi
发明人： Seiichiro Mizuno , Akira Kurahashi , Izumi Adachi
IPC分类号： G01C306
CPC分类号： G01S17/08 , G01C3/06 , G01S3/781 , G01S7/4912 , G01S17/48
摘要： A signal current I1 that is output from output terminal of semiconductor position detection element is converted to a signal voltage V1 by a current/voltage conversion unit and a signal current I2 that is output from output terminal is converted to a signal voltage V2 by a current/voltage conversion unit. Signal voltages V1 and V2 are compared in magnitude by a comparison circuit and a comparison signal is output so that maximum signal Vmax and minimum signal Vmin are selected. In A/D conversion circuit, the A/D conversion range is set using maximum signal Vmax, and minimum signal Vmin is converted to a digital signal and output. The position of beam incidence on semiconductor position detection element is found by incidence position calculating unit using the comparison signal and digital signal.

25. 发明授权

US5742232A Glass breaking detection device 失效
标题翻译：玻璃破碎检测装置
公开(公告)号：US5742232A
公开(公告)日：1998-04-21
申请号：US503047
申请日：1995-07-17
申请人： Akira Kurahashi , Toshio Hayashi
发明人： Akira Kurahashi , Toshio Hayashi
IPC分类号： G01M17/007 , B60R25/00 , B60R25/34 , G08B13/04 , G08B21/00 , G08B13/00
CPC分类号： G08B13/04 , G08B13/1672
摘要： A first wave of a glass breaking sound has a sharp peak due to an impact sound and thereafter it attenuates rapidly. The attenuating characteristics of the first wave is measured with an attenuating time or a magnitude of attenuation thereof so that whether or not glass breaking has occurred is determined. Since an original waveform obtained by a microphone includes noise, low frequency components are eliminated by a high pass filter. The characteristics of the first wave of the glass breaking sound is almost stable. Therefore, by detecting the characteristics from the first wave, the glass breaking can be detected without errors. Further, since the glass breaking is detected by attenuation of the first wave, the detection can be carried out quickly.
摘要翻译：玻璃破裂声的第一波由于撞击声而具有尖锐的峰值，此后其迅速衰减。以衰减时间或衰减量来测量第一波的衰减特性，以确定是否发生玻璃破裂。由于由麦克风获得的原始波形包括噪声，所以通过高通滤波器消除低频分量。玻璃破碎声的第一波特点几乎是稳定的。因此，通过检测来自第一波的特性，可以无错误地检测玻璃破碎。此外，由于通过第一波的衰减来检测玻璃破裂，因此能够快速地进行检测。

26. 发明授权

US5276665A Magneto-optical disk recording and reproducing apparatus capable of reproducing a plurality of disk types 失效
标题翻译：能够再现多种磁盘类型的磁光盘记录和再现装置
公开(公告)号：US5276665A
公开(公告)日：1994-01-04
申请号：US920094
申请日：1992-07-24
申请人： Kazuhiro Aoki , Akinobu Soneda , Akira Kurahashi
发明人： Kazuhiro Aoki , Akinobu Soneda , Akira Kurahashi
IPC分类号： G11B7/00 , G11B7/004 , G11B7/005 , G11B7/0055 , G11B7/12 , G11B7/125 , G11B7/13 , G11B11/10 , G11B11/105 , G11B3/90
CPC分类号： G11B7/126 , G11B11/10545 , G11B11/10597 , G11B7/005 , G11B7/13
摘要： An optical magnetic disk recording/reproducing apparatus is capable of reproducing address data when recording data signals on a magneto-optical disk and when deleting data signals from a magneto-optical disk. The reproduction of address data is performed with a high degree of stability. The apparatus includes an optical head, photoelectric voltage converters, various adders, a differential device and several switches. A first switch switches between a first position in which an output of the first switch is connected to the output of the differential device and a second position in which the output of the first switch is connected to a reference voltage. A second switch includes a first position in which an output of the second switch is connected to the output of one of the adders and a second position in which an output of the second switch is connected to the output of the first switch. Several control signal generators control the switches. Thus, the first switch outputs a signal from a differential amplifier during data reproduction and outputs a reference voltage during data recording and erasing.
摘要翻译：当在磁光盘上记录数据信号时和当从磁光盘中删除数据信号时，光盘记录/重放装置能够再现地址数据。以高度的稳定性进行地址数据的再现。该装置包括光头，光电压转换器，各种加法器，差动装置和若干开关。第一开关在其中第一开关的输出连接到差分装置的输出的第一位置和第一开关的输出连接到参考电压的第二位置之间切换。第二开关包括第一位置，其中第二开关的输出连接到一个加法器的输出，第二位置中第二开关的输出连接到第一开关的输出端。几个控制信号发生器控制开关。因此，第一开关在数据再现期间输出来自差分放大器的信号，并且在数据记录和擦除期间输出参考电压。

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