专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5532858A Optical radio transmission system and a method for adjusting optical axes thereof 失效
标题翻译：光无线传输系统及其光轴的调整方法
公开(公告)号：US5532858A
公开(公告)日：1996-07-02
申请号：US136848
申请日：1993-10-18
申请人： Kazutoshi Hirohashi , Teruhiko Shinomiya , Manabu Sakane , Keishi Ushijima , Takaaki Takeda , Masamichi Satou , Michio Kikuta , Motoyasu Nagashima
发明人： Kazutoshi Hirohashi , Teruhiko Shinomiya , Manabu Sakane , Keishi Ushijima , Takaaki Takeda , Masamichi Satou , Michio Kikuta , Motoyasu Nagashima
IPC分类号： H04B10/114 , H04B10/10 , H04B10/24
CPC分类号： H04B10/1143
摘要： An optical radio communication system comprising a first light transmitting system and a second light transmitting system. Each of said first and second light transmitting system comprising a transmitting means and a receiving means. Said transmitting means comprising a light emitting element positioned in a region including and surrounding a focal point of a first parabolic reflector for emitting light beams, said first parabolic reflector having an inner reflective surface for reflecting said light beams emitted from said light emitting element, and a means for driving said light emitting element with a signal to be transmitted. Said receiving means comprising a second parabolic reflector having an inner reflective surface for reflecting incident light beams, a light receiving element positioned in a region including and surrounding a focal point of said second parabolic reflector for receiving light beams reflected by said second parabolic reflector to output signals, and means for taking out information from said signals outputted from said light receiving element. In this optical radio communication system, broadband signals such as Manchester coded signals are directly transmitted on optical radio.
摘要翻译：一种包括第一光发射系统和第二光发射系统的光无线电通信系统。所述第一和第二光发射系统中的每一个包括发射装置和接收装置。所述发送装置包括位于包括并围绕第一抛物面反射器的焦点以发射光束的区域中的发光元件，所述第一抛物面反射器具有用于反射从所述发光元件发射的所述光束的内反射表面，以及用于用要发送的信号驱动所述发光元件的装置。所述接收装置包括具有用于反射入射光束的内部反射表面的第二抛物面反射器，位于包括并围绕所述第二抛物面反射器的焦点的区域中的光接收元件，用于接收由所述第二抛物面反射器反射的光束以输出信号以及从所述光接收元件输出的信号中取出信息的装置。在该光无线通信系统中，诸如曼彻斯特编码信号的宽带信号在光无线电上直接发送。

2. 发明授权

US5289306A Repeater system 失效
标题翻译：中继系统
公开(公告)号：US5289306A
公开(公告)日：1994-02-22
申请号：US858292
申请日：1992-03-26
申请人： Kazutoshi Hirohashi , Akio Yoshikawa , Takaaki Takeda , Takeshi Nomoto , Keishi Ushijima
发明人： Kazutoshi Hirohashi , Akio Yoshikawa , Takaaki Takeda , Takeshi Nomoto , Keishi Ushijima
IPC分类号： H04B10/11 , H04B10/16
CPC分类号： H04B10/1149
摘要： A repeater for packet data optical communication between terminal devices includes a first section and a second section. The first section includes a first device for receiving a first optical signal transmitted from a terminal device and for converting the first optical signal into a first electric signal, a second device for frequency-converting the first electric signal to a second electric signal, and a third device for converting the second electric signal into a second optical signal and for transmitting the second optical signal. The second section includes a fourth device for receiving a third optical signal and for converting the third optical signal into a third electric signal, a fifth device for frequency-converting the third electric signal to a fourth electric signal, and a sixth device for converting the fourth electric signal into a fourth optical signal and for transmitting the fourth optical signal to a terminal device.
摘要翻译：用于终端设备之间的分组数据光通信的中继器包括第一部分和第二部分。第一部分包括用于接收从终端装置发送的第一光信号并将第一光信号转换为第一电信号的第一装置，用于将第一电信号频率转换为第二电信号的第二装置，以及第三装置，用于将第二电信号转换成第二光信号并用于发送第二光信号。第二部分包括用于接收第三光信号并将第三光信号转换为第三电信号的第四装置，用于将第三电信号频率转换为第四电信号的第五装置，以及用于转换第三电信号的第六装置第四电信号转换成第四光信号，并将第四光信号发送到终端装置。

3. 发明授权

US5959754A Optical wireless communication system 失效
标题翻译：光无线通信系统
公开(公告)号：US5959754A
公开(公告)日：1999-09-28
申请号：US781678
申请日：1997-01-10
申请人： Yoshitaka Sakurai , Kazutoshi Hirohashi , Kazuo Ichihara , Takaaki Takeda , Takeshi Nomoto
发明人： Yoshitaka Sakurai , Kazutoshi Hirohashi , Kazuo Ichihara , Takaaki Takeda , Takeshi Nomoto
IPC分类号： H04B10/11 , H04B10/114 , H04B10/272 , H04L12/28 , H04B10/10 , H04J14/08
CPC分类号： H04B10/11 , H04W28/10 , H04W4/06 , H04W8/26
摘要： Interference between adjacent sections is prevented in an optical wireless communication system, in which a center device is capable of concurrently communicating through lines with a plurality of parent devices each disposed in one of the sections into which a communication area of the system is divided and each of the parent devices communicates with a plurality of child devices disposed in the same section where said parent device is disposed. The sections is grouped into some groups of sections which do not adjoin each other. Optical wireless communications are done only within one group of sections in each communication period. Some techniques for improving the effect of communication are disclosed.
摘要翻译：在光学无线通信系统中防止相邻部分之间的干扰，其中中心设备能够通过线路同时通过多个父设备进行通信，每个母设备设置在系统的通信区域被划分到的区段之一中，并且每个的父设备与设置在所述父设备所在的同一部分中的多个子设备通信。这些部分被分组成一些不相邻的部分组。在每个通信周期中，光无线通信仅在一组部分内完成。公开了一些改善通信效果的技术。

4. 发明授权

US5349463A Optical radio repeater with signal quality detection 失效
标题翻译：具有信号质量检测的光无线电中继器
公开(公告)号：US5349463A
公开(公告)日：1994-09-20
申请号：US68572
申请日：1993-05-28
申请人： Kazutoshi Hirohashi , Hiroshi Horii , Hideo Koike , Yoshiaki Yunoki , Tetsuo Fukasawa , Susumu Katayama , Akio Yoshikawa , Keishi Ushijima , Takaaki Takeda , Takeshi Nomoto , Michio Kikuta , Shunichi Shichijo , Yoshiki Iwasaki
发明人： Kazutoshi Hirohashi , Hiroshi Horii , Hideo Koike , Yoshiaki Yunoki , Tetsuo Fukasawa , Susumu Katayama , Akio Yoshikawa , Keishi Ushijima , Takaaki Takeda , Takeshi Nomoto , Michio Kikuta , Shunichi Shichijo , Yoshiki Iwasaki
IPC分类号： H04B10/10 , H04B10/00 , H04B10/16
CPC分类号： H04B10/1149
摘要： An optical radio system includes a host device, an end device, and a repeater. The host device and the end device communicate with each other via the repeater by use of optical radio. The repeater includes a section for receiving a first light signal from one of the host device and the end device, a section for converting the received first light signal into a first electric signal, a section for frequency-converting the first electric signal into a second electric signal, and a section for generating a second light signal in response to the second electric signal and transmitting the generated second light signal. The repeater also includes a section for demodulating one of the first electric signal and the second electric signal into a baseband signal, a section for detecting a quality of the baseband signal, and a section for enabling transmission of the second light signal only when the detected quality of the baseband signal is equal to or greater than a predetermined quality.
摘要翻译：光无线电系统包括主机设备，终端设备和中继器。主机设备和终端设备通过中继器通过使用光无线电相互通信。中继器包括用于从主机设备和终端设备之一接收第一光信号的部分，用于将接收的第一光信号转换为第一电信号的部分，用于将第一电信号频率转换为第二电信号的部分电信号和用于响应于第二电信号产生第二光信号并发送所生成的第二光信号的部分。中继器还包括用于将第一电信号和第二电信号中的一个解调为基带信号的部分，用于检测基带信号的质量的部分，以及仅在检测到的基带信号时能够传输第二光信号的部分基带信号的质量等于或大于预定质量。

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