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21. 发明申请

US20180145763A1 COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM 审中-公开
公开(公告)号：US20180145763A1
公开(公告)日：2018-05-24
申请号：US15580135
申请日：2016-06-17
申请人： Sony Corporation
发明人： Hiroaki Fujita , Hiroaki Nakano , Uichiro Omae , Tetsuya Fujiwara
IPC分类号： H04B10/556 , H04W88/02 , H04W52/08 , H04W52/10 , H04W52/42
CPC分类号： H04B10/5563 , H04B5/0031 , H04B5/0081 , H04W52/08 , H04W52/10 , H04W52/42 , H04W88/021
摘要： A communication device of the disclosure includes a phase synchronizer, a modulator, and a controller. The phase synchronizer generates a second signal on a basis of a first signal received from a communication partner by selectively performing one of a closed loop operation and an open loop operation. The modulator is able to modulate the first signal on a basis of the second signal. The controller controls operations of the phase synchronizer and the modulator.

22. 发明授权

US09621266B2 Techniques for raster line alignment in light-based communication 有权
公开(公告)号：US09621266B2
公开(公告)日：2017-04-11
申请号：US14572130
申请日：2014-12-16
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/00 , H04B10/116
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Techniques are disclosed for providing proper raster line alignment of a camera or other light-sensing device of a receiver device relative to a transmitting light-based communication (LCom)-enabled luminaire to establish reliable LCom there between. In accordance with some embodiments, proper alignment can be provided automatically (e.g., by the receiver device and/or other suitable controller). In accordance with some embodiments, proper alignment can be provided by the user. In some instances in which a user is to be involved in the alignment process, the receiver device may be configured, for example, to instruct or otherwise guide the user in the process of properly aligning the receiver device relative to a given transmitting LCom-enabled luminaire.

23. 发明申请

US20160294470A1 Apparatus configured for visible-light communications (VLC) using under-sampled frequency shift on-off keying (UFSOOK) 审中-公开
标题翻译：使用欠采样频移开关键控（UFSOOK）配置用于可见光通信（VLC）的设备
公开(公告)号：US20160294470A1
公开(公告)日：2016-10-06
申请号：US15132612
申请日：2016-04-19
申请人： Intel Corporation
发明人： Richard D. Roberts , Mathys C. Walma , Praveen Gopalakrishnan
IPC分类号： H04B10/116 , H04B10/50 , H04L27/22 , H04L25/49 , H04L27/12 , H04L27/144 , H04B10/556 , H04B10/524
CPC分类号： H04B10/116 , H04B10/502 , H04B10/524 , H04B10/5563 , H04B10/60 , H04L25/4902 , H04L27/02 , H04L27/10 , H04L27/12 , H04L27/144 , H04L27/2096 , H04L27/223
摘要： Embodiments may provide a way of communicating via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode (LED) lighting and receivers or detectors that can determine data from light received from the amplitude modulated electromagnetic radiator. Some embodiments may provide a method of transmitting/encoding data via modulated LED lighting and other embodiments may provide receiving/decoding data from the modulated LED lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera (as might be found in a smart phone). Some embodiments are intended for indoor navigation via photogrammetry (i.e., image processing) using self-identifying LED light anchors. In many embodiments, the data signal may be communicated via the light source at amplitude modulating frequencies such that the resulting flicker is not perceivable to the human eye.
摘要翻译：实施例可以提供通过可以被调幅的电磁辐射器或光源（例如发光二极管（LED）照明）和可以从从调幅电磁辐射器接收的光确定数据的接收器或检测器进行通信的方式。一些实施例可以提供通过经调制的LED照明来发送/编码数据的方法，并且其他实施例可以通过具有低采样频率的设备（例如相对便宜的照相机）提供来自经调制的LED照明的数据的接收/解码在智能手机中）。一些实施例旨在通过使用自识别LED光锚的摄影测量（即，图像处理）进行室内导航。在许多实施例中，可以以幅度调制频率通过光源传送数据信号，使得所得到的闪烁对人眼不能察觉。

24. 发明申请

US20150280822A1 TECHNIQUES FOR ENHANCING BAUD RATE IN LIGHT-BASED COMMUNICATION 有权
标题翻译：在光通信中提高波特率的技术
公开(公告)号：US20150280822A1
公开(公告)日：2015-10-01
申请号：US14575450
申请日：2014-12-18
申请人： Christian Breuer , Anant Aggarwal , Bernhard Siessegger
发明人： Christian Breuer , Anant Aggarwal , Bernhard Siessegger
IPC分类号： H04B10/116 , H04N5/353 , G06K9/46 , H04B10/50 , H04B10/556
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Techniques are disclosed for coding light-based communication (LCom) data in a manner that allows for detection thereof, for example, via a standard low-speed (e.g., 30 frames per second) smartphone camera. In accordance with some embodiments, the disclosed techniques can be used, for example, in encoding and decoding LCom data in a manner that: (1) prevents or otherwise minimizes perceivable flicker of the light output by a transmitting LCom-enabled luminaire; and/or (2) avoids or otherwise reduces a need for additional, specialized receiver hardware at the receiver computing device including the camera. In some cases, the disclosed techniques can be used, for example, to enhance the baud rate between a transmitting LCom-enabled luminaire and a receiver device.
摘要翻译：公开了以允许例如经由标准低速（例如，30帧/秒）智能相机的检测方式对基于光的通信（LCom）数据进行编码的技术。根据一些实施例，所公开的技术可以用于例如以下方式对LCom数据进行编码和解码：（1）防止或以其他方式最小化由发射LCom启用的照明器的光输出的感知闪烁; 和/或（2）避免或以其他方式减少在包括相机的接收机计算设备处对附加的专用接收机硬件的需求。在一些情况下，所公开的技术可以用于例如增强发射LCom能够照明的照明装置和接收装置之间的波特率。

25. 发明申请

US20150270904A1 Transmitter Apparatus and Method 有权
标题翻译：变送器装置及方法
公开(公告)号：US20150270904A1
公开(公告)日：2015-09-24
申请号：US14219799
申请日：2014-03-19
申请人： FutureWei Technologies, Inc.
发明人： Zhiping Jiang , Chen Chen , Zhuhong Zhang , Chuandong Li
IPC分类号： H04B10/532 , H04J14/02
CPC分类号： H04B10/532 , H04B10/506 , H04B10/548 , H04B10/5561 , H04B10/5563 , H04J14/02
摘要： An apparatus comprises a digital signal processing module configured to receive a data stream and generate a plurality of digital multiple tones, a plurality of digital-to-analog converters coupled to the digital signal processing module, a plurality of drivers coupled to respective digital-to-analog converters, an electro-optic modulator having inputs coupled to the drivers and outputs coupled to a fiber and a multi-wavelength light source coupled to the electro-optic modulator.
摘要翻译：一种装置包括数字信号处理模块，被配置为接收数据流并产生多个数字多音调，多个数模转换器耦合到数字信号处理模块，多个驱动器耦合到相应的数字 - - 光谱调制器，其具有耦合到驱动器的输入和耦合到光纤的输出和耦合到电光调制器的多波长光源的电光调制器。

26. 发明授权

US08498543B2 Dispersion tolerant optical system and method 有权
标题翻译：色散容忍光学系统及方法
公开(公告)号：US08498543B2
公开(公告)日：2013-07-30
申请号：US13296530
申请日：2011-11-15
申请人： Marco Romagnoli , Paola Galli
发明人： Marco Romagnoli , Paola Galli
IPC分类号： H04B10/04
CPC分类号： H04B10/5563 , G02F2/00 , G02F2001/212 , G02F2202/20 , H04B10/25073 , H04B10/504
摘要： An optical communication system and method of use are described. The system comprises an optical source adapted to receive a digitally encoded data signal comprising sequences of data at a data rate (B) and comprising two signal levels representing a first state and a second state of the data signal, the optical source being adapted to produce an optical signal substantially frequency modulated with frequency excursion Δν comprising a first instantaneous frequency (ν0) associated to the first state and a second instantaneous frequency (ν1) associated to the second state; an optical converter adapted to receive the substantially frequency modulated optical signal, the optical converter having an optical transfer function varying with frequency and including at least one pass band, the at least one pass band having a peak transmittance and at least a low-transmittance region.
摘要翻译：描述了光通信系统和使用方法。该系统包括适于接收数字编码的数据信号的光源，该数字信号包括数据速率（B）的数据序列，并且包括表示数据信号的第一状态和第二状态的两个信号电平，光源适于产生频率偏移Deltanu基本上频率调制的光信号包括与第一状态相关联的第一瞬时频率（nu0）和与第二状态相关联的第二瞬时频率（nu1）; 光转换器，其适于接收基本上频率调制的光信号，所述光转换器具有随着频率变化并且包括至少一个通带的光传递函数，所述至少一个通带具有峰值透射率和至少低透射率区域。

27. 发明申请

US20130108279A1 LASER COMMUNICATION SYSTEM 有权
标题翻译：激光通信系统
公开(公告)号：US20130108279A1
公开(公告)日：2013-05-02
申请号：US13287555
申请日：2011-11-02
申请人： Alexandre M. Bratkovski , Jacob Khurgin
发明人： Alexandre M. Bratkovski , Jacob Khurgin
IPC分类号： H04B10/06
CPC分类号： H04B10/69 , H01S5/0427 , H01S5/18302 , H01S5/18358 , H04B10/5563 , H04B10/676
摘要： A laser communication system and method are disclosed. The laser communication system includes a laser receiver system to receive a frequency-shift keyed (FSK) optical signal encoded with a plurality of data signals. The laser receiver system including an FSK differential detection system that includes a plurality of differential detection filters that can each receive the FSK optical signal and generate an output. The FSK differential detection system can demodulate the FSK optical signal into a multi-bit digital code corresponding to a frequency of the FSK optical signal based on the output of each of the plurality of differential detection filters.
摘要翻译：公开了一种激光通信系统和方法。激光通信系统包括用于接收用多个数据信号编码的频移键控（FSK）光信号的激光接收机系统。该激光接收机系统包括一个FSK差分检测系统，该系统包括多个差分检测滤波器，每个差分检测滤波器可接收FSK光信号并产生输出。 FSK差分检测系统可以基于多个差分检测滤波器的输出，将FSK光信号解调为与FSK光信号的频率对应的多位数字码。

28. 发明授权

US08401398B2 Modulator for frequency-shift keying of optical signals 有权
标题翻译：用于光信号频移键控的调制器
公开(公告)号：US08401398B2
公开(公告)日：2013-03-19
申请号：US12530660
申请日：2008-03-06
申请人： Bryan S. Robinson , Don M. Boroson , Scott A. Hamilton , Shelby J. Savage
发明人： Bryan S. Robinson , Don M. Boroson , Scott A. Hamilton , Shelby J. Savage
IPC分类号： H04B10/04
CPC分类号： H04B10/5563 , H04B10/5051 , H04B10/548
摘要： Described are an FSK modulator and a method for large-alphabet FSK modulation. The FSK modulator and the method are based on filtering of a multi-tone optical source such as a mode-locked laser which provides a comb distribution of tones. A frequency-selective component selects for transmission a subset of the tones. In various embodiments the frequency-selective component is a Mach-Zehnder interferometer filter or a microring resonator filter. A second frequency-selective component selects a subset of the tones from the comb distribution provided by the first frequency-selective component. Still more frequency-selective components can be used according to the number of tones supplied by the multi-tone optical source to the FSK modulator. The optical signal exiting the last frequency-selective component includes only a single tone which corresponds to the symbol to be transmitted.
摘要翻译：描述了FSK调制器和用于大字母FSK调制的方法。 FSK调制器和方法基于滤波多色调光源，例如提供色调的梳状分布的锁模激光器。频率选择分量选择传输音调的子集。在各种实施例中，频率选择部件是马赫 - 曾德干涉仪滤波器或微环谐振器滤波器。第二频率选择分量从由第一频率选择分量提供的梳状分布中选择音调的子集。根据由多音调光源向FSK调制器提供的音调数量，可以使用更多的频率选择性组件。离开最后频率选择分量的光信号仅包括对应于待传输的符号的单个音调。

29. 发明申请

US20130051804A1 OFDM OPTICAL TRANSMITTER AND TRANSMISSION METHOD, AND OFDM OPTICAL RECEIVER AND RECEPTION METHOD 审中-公开
标题翻译： OFDM光学发射机和传输方法，以及OFDM光接收机和接收方法
公开(公告)号：US20130051804A1
公开(公告)日：2013-02-28
申请号：US13589436
申请日：2012-08-20
申请人： Hwan Seok CHUNG , Sun Hyok CHANG
发明人： Hwan Seok CHUNG , Sun Hyok CHANG
IPC分类号： H04J14/00
CPC分类号： H04B10/5563 , H04L27/2697
摘要： Disclosed is an orthogonal frequency division multiplexing (OFDM) optical transmitter including a signal size adjustor for amplifying plural data signals modulated based on an OFDM scheme with different amplification rates so that each data signal is amplified according to a size of the corresponding data signal. Accordingly, it is possible to reduce a peak-to-average power ratio, and thus a nonlinear phenomenon generated in an optical line can be reduced and the quality of an OFDM optical signal can be improved.
摘要翻译：公开了一种正交频分复用（OFDM）光发射机，其包括信号尺寸调整器，用于放大根据具有不同放大率的OFDM方案调制的多个数据信号，使得每个数据信号根据相应数据信号的大小进行放大。因此，能够降低峰均功率比，能够降低光线路中产生的非线性现象，提高OFDM光信号的质量。

30. 发明授权

US08111993B2 Methods and apparatus for optical transmission of digital signals 有权
标题翻译：数字信号光传输的方法和装置
公开(公告)号：US08111993B2
公开(公告)日：2012-02-07
申请号：US12089571
申请日：2006-10-12
申请人： Arthur James Lowery , Jean Armstrong
发明人： Arthur James Lowery , Jean Armstrong
IPC分类号： H04J14/02 , H04J1/00
CPC分类号： H04N7/22 , H04B10/2513 , H04B10/5165 , H04B10/541 , H04B10/548 , H04B10/556 , H04B10/5561 , H04B10/5563 , H04B10/6971
摘要： A system (100) for transmitting digital information includes a transmitting apparatus (102) for generating an optical signal bearing digital information, a dispersive optical channel (104), and a receiving apparatus (110) for receiving the optical signal. The dispersive optical channel (104) is disposed to convey the optical signal from the transmitting apparatus (102) to the receiving apparatus (110). The transmitting apparatus includes an encoder (114) for encoding digital information into a series of blocks, each including a plurality of data symbols corresponding with one or more bits of digital information. A signal generator (118) generates a time-varying signal corresponding with each of said blocks. An optical transmitter (136) is arranged to apply the time-varying signal to an optical source (138) to produce an optical signal which includes an optical carrier and substantially only a single information bearing optical sideband in an optical frequency domain, the sideband corresponding with the time-varying signal. The receiving apparatus (110) includes an optical detector (146) for detecting the optical signal to produce a corresponding received time-varying electrical signal. The receiver further includes means (166) for generating a series of received data blocks from the time-varying electrical signal. An equalizer (168) performs an equalization of received data symbols included in each data block to mitigate the effect of dispersion of the optical channel, thereby enabling the transmitted data symbols to be recovered.
摘要翻译：用于发送数字信息的系统（100）包括用于产生承载数字信息的光信号的发射装置（102），分散光信道（104）和用于接收光信号的接收装置（110）。色散光通道（104）被布置成将来自发送装置（102）的光信号传送到接收装置（110）。发送装置包括用于将数字信息编码成一系列块的编码器（114），每个块包括与数字信息的一个或多个比特相对应的多个数据符号。信号发生器（118）产生与每个所述块对应的时变信号。光发射器（136）被布置成将时变信号施加到光源（138）以产生包括光载波的光信号，并且基本上仅在光频域中具有单个信息承载光边带，所述边带对应具有时变信号。接收装置（110）包括用于检测光信号以产生相应的接收到的时变电信号的光检测器（146）。接收机还包括用于从时变电信号产生一系列接收数据块的装置（166）。均衡器（168）执行包括在每个数据块中的接收数据符号的均衡以减轻光信道的色散的影响，从而使得能够恢复发送的数据符号。

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