专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

101. 发明授权

US06917241B2 Amplifier circuit, transmission device, amplification method, and transmission method 有权
标题翻译：放大电路，传输装置，放大方法及传输方式
公开(公告)号：US06917241B2
公开(公告)日：2005-07-12
申请号：US10435784
申请日：2003-05-12
申请人： Toru Matsuura , Hisashi Adachi
发明人： Toru Matsuura , Hisashi Adachi
IPC分类号： H03F1/02 , H03F3/38
CPC分类号： H03F1/0222 , H03F2200/331
摘要： An amplifier circuit has: a delta-sigma modulator which delta-sigma modulates a signal; and an amplifier which is connected to an output of the delta-sigma modulator. In the amplifier circuit, an output voltage of the delta-sigma modulator is controlled in accordance with an output power of the amplifier. When the output power of the amplifier is reduced, the output voltage of the delta-sigma modulator is lowered.
摘要翻译：放大器电路具有：Δ-Σ调制器，Δ-Σ调制信号; 以及连接到Δ-Σ调制器的输出的放大器。在放大器电路中，根据放大器的输出功率来控制Δ-Σ调制器的输出电压。当放大器的输出功率减小时，Δ-Σ调制器的输出电压降低。

102. 发明授权

US06590449B2 Predistortion circuit, low-distortion power amplifier, and control methods therefor 有权
标题翻译：预失真电路，低失真功率放大器及其控制方法
公开(公告)号：US06590449B2
公开(公告)日：2003-07-08
申请号：US09865692
申请日：2001-05-29
申请人： Toru Matsuura , Kaoru Ishida , Makoto Sakakura , Seiji Fujiwara
发明人： Toru Matsuura , Kaoru Ishida , Makoto Sakakura , Seiji Fujiwara
IPC分类号： H03F126
CPC分类号： H03F1/3241 , H03F1/3229 , H03F1/3247 , H03F1/3276 , H03F1/3282
摘要： An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by the amplitude frequency characteristic adjustment circuit 106, and then their amplitudes and phases are adjusted by a vector adjustment circuit 107. This configuration makes it possible to suppress simultaneously both of low-frequency-side and high-frequency-side distortion voltages of a distortion generated by a wide-band class-AB power amplifier even if they are different in amplitude and phase.
摘要翻译：振幅频率特性调整电路106设置在失真发生电路105的下游并连接到失真发生电路105.通过振幅频率特性调整电路106调整低频侧和高频侧失真电压之间的振幅差，然后它们的幅度和相位由矢量调整电路107调整。这种配置使得可以同时抑制由宽带AB类功率放大器产生的失真的低频侧和高频侧失真电压两者即使它们的幅度和相位不同。

103. 发明授权

US6048986A Method for preparing aromatic compounds 失效
标题翻译：芳香族化合物的制备方法
公开(公告)号：US6048986A
公开(公告)日：2000-04-11
申请号：US98605
申请日：1998-06-17
申请人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
发明人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
IPC分类号： G02B6/12 , C07C51/08 , C07C63/68 , C07C65/24 , C07C65/28 , C07C255/54 , C07D209/48 , C07D307/89 , C07D487/04 , C07D493/04 , C08G73/10 , G02B1/04 , G02B6/00
CPC分类号： C07D209/48 , C07C255/54 , C07C51/08 , C07C51/56 , C07C63/68 , C07C65/24 , C07C65/28 , C07D307/89 , C07D487/04 , C07D493/04 , C08G73/1039 , C08G73/1064 , C08G73/1067 , C08G73/1071
摘要： A method for preparing aromatic compounds including 1,4-difluoropyromellitic dianhydride represented by formula (12): ##STR1## and 1,4-difluoropyromellitic acid represented by formula (15): ##STR2## by dehydrating or hydrolyzing and dehydrating precursors.
摘要翻译：一种制备芳族化合物的方法，包括由式（12）表示的1,4-二氟苯
二甲酸二酐和由式（15）表示的1,4-二氟佛蒙特酸：通过脱水或水解和脱水前体。

104. 发明授权

US5849934A Method for preparing aromatic compounds 失效
标题翻译：芳香族化合物的制备方法
公开(公告)号：US5849934A
公开(公告)日：1998-12-15
申请号：US20573
申请日：1998-01-28
申请人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
发明人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
IPC分类号： G02B6/12 , C07C51/08 , C07C63/68 , C07C65/24 , C07C65/28 , C07C255/54 , C07D209/48 , C07D307/89 , C07D487/04 , C07D493/04 , C08G73/10 , G02B1/04 , G02B6/00
CPC分类号： C07D209/48 , C07C255/54 , C07C51/08 , C07C51/56 , C07C63/68 , C07C65/24 , C07C65/28 , C07D307/89 , C07D487/04 , C07D493/04 , C08G73/1039 , C08G73/1064 , C08G73/1067 , C08G73/1071
摘要： A perfluorinated polyimide comprising a repeating unit represented by general formula (1): ##STR1## and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6): ##STR2## wherein R.sub.1 is a tetravalent organic group; and R.sub.2 is a divalent organic group, provided that chemical bonds between carbon atoms and monovalent elements contained in R.sub.1 and R.sub.2 are exclusively carbon-to-fluorine bonds; methods for preparing them; and optical material including the perfluorinated polyimide. 1,4-Bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene dianhydride, 1,4-difluoropyromellitic anhydride, 1,4-bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene, 1,4-difluoropyromellitic acid, and 1,4-bis(3,4-dicyanotrifluorophenoxy)-tetrafluorobenzene as well as methods preparing them. The perfluorinated polyimide has a thermal stability and has a low optical loss in an optical communication wavelength region (0.8 to 1.7 .mu.m).
摘要翻译：一种全氟化聚酰亚胺，其包含由通式（1）表示的重复单元：（IMAG）（1）和包含由通式（6）表示的重复单元的全氟化聚（酰胺酸）：其中R1是四价有机基团; 并且R2是二价有机基团，条件是R1和R2中包含的碳原子和一价元素之间的化学键仅为碳 - 氟键; 制备方法和包括全氟化聚酰亚胺的光学材料。 1,4-二（3,4-二羧基三氟苯氧基） - 四氟苯二酸酐，1,4-二氟苯
二甲酸酐，1,4-双（3,4-二羧基三氟苯氧基） - 四氟苯，1,4-二氟苯甲酸酐，双（3,4-二氰基三氟苯氧基） - 四氟苯以及制备它们的方法。全氟聚酰亚胺具有热稳定性，并且在光通信波长区域（0.8-1.7μm）中具有低光损耗。

105. 发明授权

US5539781A Combining diversity apparatus with squelch function 失效
标题翻译：将分集装置与静噪功能相结合
公开(公告)号：US5539781A
公开(公告)日：1996-07-23
申请号：US351021
申请日：1994-12-07
申请人： Toru Matsuura
发明人： Toru Matsuura
IPC分类号： H04B1/10 , H04B7/08 , H04L1/06 , H04B7/02 , H04L1/02
CPC分类号： H04B7/084 , H04L1/06 , H04B1/1027
摘要： In a combining diversity apparatus for a digital multi-valued modulation RF signal, at least first and second receiving antenna units having a space diversity relationship, first and second frequency conversion units for converting the RF signal into first and second IF signals, a combining unit for phasing-combining the first IF signal with the second IF signal, and determination units for determining whether or not the first and second IF signals are interference signals, are provided. When the first or second IF signal is an interference signal, the first or second IF signal is shut off or attenuated by a first switching unit or a second switching unit.
摘要翻译：在用于数字多值调制RF信号的组合分集装置中，具有空间分集关系的至少第一和第二接收天线单元，用于将RF信号转换为第一和第二IF信号的第一和第二频率转换单元，组合单元用于将第一IF信号与第二IF信号进行相位合并，以及用于确定第一和第二IF信号是否为干扰信号的确定单元。当第一或第二IF信号是干扰信号时，第一或第二IF信号被第一切换单元或第二切换单元切断或衰减。

106. 发明授权

US5449741A Polyimide optical material 失效
标题翻译：聚酰亚胺光学材料
公开(公告)号：US5449741A
公开(公告)日：1995-09-12
申请号：US140982
申请日：1993-10-25
申请人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
发明人： Shinji Ando , Toru Matsuura , Shigekuni Sasaki , Fumio Yamamoto
IPC分类号： C07C63/68 , C07C65/24 , C07C65/28 , C07C255/54 , C07D209/48 , C07D487/04 , C07D493/04 , C08G73/10 , C08G69/26
CPC分类号： C07D209/48 , C07C255/54 , C07C65/24 , C07C65/28 , C07D487/04 , C07D493/04 , C08G73/1039 , C08G73/1064 , C08G73/1067 , C08G73/1071
摘要： A polyimide optical material, composed of a perfluorinated polyimide having a perfluorinated repeating unit represented by general formula (1) ##STR1## wherein R.sub.1 is a tetravalent perfluorinated organic group; and R.sub.2 is a divalent perfluorinated organic group.
摘要翻译：一种聚酰亚胺光学材料，由具有通式（1）表示的全氟化重复单元的全氟化聚酰亚胺组成，其中R1是四价全氟化有机基团; R2是二价全氟化有机基团。

107. 发明授权

US4835483A QAM demodulator with rapid resynchronization function 失效
标题翻译： QAM解调器具有快速重新同步功能
公开(公告)号：US4835483A
公开(公告)日：1989-05-30
申请号：US222665
申请日：1988-07-21
申请人： Toru Matsuura
发明人： Toru Matsuura
IPC分类号： H03H15/00 , H04B3/06 , H04B7/005 , H04L27/01 , H04L27/38
CPC分类号： H04L27/38 , H04L27/01
摘要： In order to rapidly resynchronize a QAM demodulator by effectively operating a transversal equalizer, when the demodulator remains in synchronism, a transversal filter forming part of the equalizer is allowed to operate normally. On the other hand, in the event that the demodulator falls into asynchronism, (a) the transversal filter intermittently operates and receives a first constant voltage during the discontinuous operations if a deviated message point is detected within a predetermined region and (b) the transversal filter is alternately supplied with the first constant voltage and a second constant voltage if a deviated message point is outside the predetermined of the region.
摘要翻译：为了通过有效地操作横向均衡器来快速地重新同步QAM解调器，当解调器保持同步时，允许形成均衡器的一部分的横向滤波器正常工作。另一方面，在解调器处于异步状态的情况下，如果在预定区域内检测到偏移的消息点，则横向滤波器在间歇操作期间间歇地操作并接收第一恒定电压，并且（b）横向如果偏离的消息点在该区域的预定值之外，则交替地提供第一恒定电压和第二恒定电压。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式