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1.发明申请Method and System For Synchronising an Optical Transmitter With an Optical Modulator 审中-公开用于使光发射机与光学调制器同步的方法和系统公开(公告)号：US20080247764A1
公开(公告)日：2008-10-09
申请号：US12090743
申请日：2006-10-19
IPC分类号： H04B10/04
CPC分类号： H04L7/0091 , H04B10/2587 , H04L7/0075
摘要： A method of synchronising an optical transmitter and modulator comprising transmitting a calibration sequence of pulses from the transmitter to the modulator; varying a control timing drawn from the set comprising the transmit interval timings and the modulator transmission interval timings; monitoring the resulting pulses transmitted by the modulator and selecting a preferred control timing; controlling the optical transmitter and/or modulator responsive to the selected control timing. Corresponding apparatus, systems, signals and programs for computers to implement or control the arrangement are also provided.
摘要翻译： 一种同步光发射机和调制器的方法，包括从所述发射机向所述调制器发射校准脉冲序列; 改变从包括发射间隔定时和调制器传输间隔定时的集合中抽出的控制定时; 监视由调制器发送的所得到的脉冲并选择优选的控制定时; 响应于所选择的控制定时来控制光发射机和/或调制器。 还提供了用于计算机实现或控制该装置的相应装置，系统，信号和程序。
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2.发明授权Method of providing duplex optical communications and optical modulator therefor 有权提供双工光通信及其光调制器的方法公开(公告)号：US08135286B2
公开(公告)日：2012-03-13
申请号：US12090317
申请日：2006-10-19
CPC分类号： H04B10/1125
摘要： Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting —received TSK pulses so as to transmit an on-off keying (OOK) signal wherein modulation is achieved by operating a micro-opto-electronic mechanical system (MOEMS) device having a oscillation period, the difference in timing between logic 1 and logic 0 pulses of the TSK encoded signal being such that each pulse arrives at a time within a single MOEMS device oscillation period chosen to ensure high or low transmissivity through the MOEMS device independent of incident TSK encoded signal pulse value (0 or 1).
摘要翻译： 提供双工自由空间光学，通信的方法包括接收时移键控（TSK）编码信号，并选择性地重新调制和可选地反向反射接收的TSK脉冲，以便发送开 - 关键控（OOK）信号 其中通过操作具有振荡周期的微光电子机械系统（MOEMS）装置来实现调制，TSK编码信号的逻辑1和逻辑0脉冲之间的定时差使得每个脉冲到达一个 选择单个MOEMS器件振荡周期，以确保通过MOEMS器件的高或低透射率，独立于入射的TSK编码信号脉冲值（0或1）。
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3.发明申请Method of Providing Duplex Optical Communications and Optical Modulator Therefor 有权提供双工光通信及其光调制器的方法公开(公告)号：US20080260380A1
公开(公告)日：2008-10-23
申请号：US12090317
申请日：2006-10-19
CPC分类号： H04B10/1125
摘要： Methods of providing duplex free-space optical, communication comprising receiving a time-shift keying (TSK) encoded signal and selectively re-modulating—and optionally retro-reflecting—received TSK pulses so as to transmit an on-off keying (OOK) signal. Related apparatus and signals are also provided.
摘要翻译： 提供双工自由空间光学，通信的方法包括接收时移键控（TSK）编码信号并选择性地重新调制并且可选地反向反射接收的TSK脉冲，以便发送开 - 关键控（OOK）信号 。 还提供了相关的装置和信号。
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公开(公告)号：US20080266553A1
公开(公告)日：2008-10-30
申请号：US12090537
申请日：2006-10-19
CPC分类号： G01B11/26
摘要： Apparatus and methods for detecting angle of incidence of an optical beam. The apparatus employs two optical detectors, the first of which has placed in front of it a coating or layer which exhibits an angle-dependent optical transmission characteristic distinct from that of the light path in front of the second detector. The difference in a characteristic of the light received at the respective detectors therefore provides an indication of the angle of incidence of the light beam. The angle detector may be used particularly, though not exclusively, in conjunction with free space optical communications systems.
摘要翻译： 用于检测光束入射角的装置和方法。 该装置采用两个光学检测器，其中第一个在其前方放置了一个涂层或层，其表现出与第二检测器前面的光路的角度相关的光传输特性。 因此，在各个检测器处接收的光的特性的差异提供了光束的入射角的指示。 角度检测器可以特别地使用，但不排他地结合自由空间光通信系统。
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公开(公告)号：US20130019084A1
公开(公告)日：2013-01-17
申请号：US13498458
申请日：2010-09-28
申请人： David Arthur Orchard , Rebecca Anne Wilson , Jonathan Alexander Skoyles Pritchard , Martin James Cooper , Terence John Shepherd , Andrew Charles Lewin , Paul Richard Tapster , Charlotte Rachel Helen Bennett
发明人： David Arthur Orchard , Rebecca Anne Wilson , Jonathan Alexander Skoyles Pritchard , Martin James Cooper , Terence John Shepherd , Andrew Charles Lewin , Paul Richard Tapster , Charlotte Rachel Helen Bennett
CPC分类号： G06K9/74 , G06F7/02 , G06F2207/025
摘要： Apparatus (100) is provided which is arranged to accept an input data stream. In some embodiments, the apparatus (100) comprises a sampler arranged to sample the input data stream to provide k samples thereof, wherein each of the samples is n bits long and a string selector arranged to select m binary strings n bits long from at least a chosen subset of all random binary strings of a predetermined length. The apparatus (100) may further comprise a logical operator arranged to perform a logical function for each of the k samples with each of the selected binary strings to provide a vector, a memory arranged to store a matrix of the vectors generated from k samples, and an address generator arranged to generate RAM address segments from the matrix. In embodiments, the apparatus (100) may comprise a processor for, for example, pattern matching; feature detection, image recognition.
摘要翻译： 提供了被设置为接受输入数据流的装置（100）。 在一些实施例中，装置（100）包括采样器，其被配置为对输入数据流进行采样以提供其k个采样，其中每个采样为n位长，并且串选择器布置成从至少选择n位长的m个二进制串 具有预定长度的所有随机二进制串的选定子集。 所述设备（100）还可以包括逻辑运算符，所述逻辑运算符被布置为对所选择的二进制串中的每一个为k个样本中的每一个执行逻辑函数以提供向量;布置成存储从k个样本生成的向量的矩阵的存储器， 以及布置成从矩阵生成RAM地址段的地址发生器。 在实施例中，设备（100）可以包括用于例如模式匹配的处理器; 特征检测，图像识别。
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公开(公告)号：US08285138B2
公开(公告)日：2012-10-09
申请号：US12518767
申请日：2007-12-17
CPC分类号： G06K9/74 , G06E3/00 , H04Q11/0005 , H04Q2011/003 , H04Q2011/0032 , H04Q2011/0035
摘要： An optical correlation apparatus is described which forms first and second parallel optical signals in response to a serial input data stream. The first parallel optical signal is arranged to have bright pulses represent binary 1 and the second parallel optical signal is arranged to have bright pulses represent binary 0. A channel select means, such as an optical switch or amplitude modulator, deselects or blocks channels in the first parallel optical signal which correspond to binary 1 in a reference data string and also deselects or blocks channels in the second parallel optical signal which correspond to binary 0 in the reference data string. The remaining optical signals are combined at one or more detectors. Where the input data matches the reference data string each bright pulse in the first and second parallel optical signals is deselected and the detector registers zero intensity. However when there is any mismatch at least one channel will pass a bright pulse to the detector. An instance of zero intensity can therefore be used as an indication of pattern match.
摘要翻译： 描述了一种光学相关装置，其响应于串行输入数据流而形成第一和第二并行光信号。 第一并行光信号被布置成具有表示二进制1的亮脉冲，并且第二并行光信号被布置为具有表示二进制0的亮脉冲。诸如光开关或幅度调制器的通道选择装置在...中取消选择或阻止通道 第一并行光信号对应于参考数据串中的二进制1，并且还取消选择或阻止在参考数据串中对应于二进制0的第二并行光信号中的信道。 剩余的光信号在一个或多个检测器处组合。 在输入数据与参考数据串匹配的情况下，取消选择第一和第二并行光信号中的每个亮脉冲，并且检测器记录零强度。 然而，当存在任何失配时，至少一个通道将通过明亮的脉冲到检测器。 因此，零强度的实例可以用作模式匹配的指示。
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公开(公告)号：US20100027087A1
公开(公告)日：2010-02-04
申请号：US12519005
申请日：2007-12-17
IPC分类号： G06E3/00
CPC分类号： G06E3/00
摘要： An optical correlation apparatus is taught which provides a parallel optical signal having a phase modulation representing input data to which a parallel phase modulation based on reference data is applied. In the event of correlation the resulting wavefront is planar and can be interferometrically coupled to give a high intensity signal. The invention involves use of parallel amplitude modulation means for selectively blocking the optical signal in one or more of the channels of the parallel optical signal which allows different sized reference data strings to be searched more easily and also aids in calibration.
摘要翻译： 提供了一种光学相关装置，其提供具有相位调制的并行光信号，该相位调制表示基于参考数据的并行相位调制的输入数据。 在相关的情况下，所得到的波前是平面的，并且可以被干涉地耦合以产生高强度信号。 本发明涉及使用并行幅度调制装置来选择性地阻挡并行光信号的一个或多个信道中的光信号，其允许更容易地搜索不同大小的参考数据串并且还有助于校准。
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公开(公告)号：US07589825B2
公开(公告)日：2009-09-15
申请号：US10534498
申请日：2003-11-11
IPC分类号： G01C3/08
摘要： This invention relates to a ranging apparatus capable of ranging simultaneously to a three dimensional scene. An illumination means (22) illuminates a scene with a two dimensional array of spots (12). A detector (6) is located near to the illumination means (22) and arranged to look toward the scene. A processor (7) responds to the output from the detector (6) and, from the location of a spot in the image of the scene, determines the range to that spot. A variety of techniques are used to resolve ambiguity in determining which projected spot is being considered.
摘要翻译： 本发明涉及一种同时测量三维场景的测距装置。 照明装置（22）用点二维阵列（12）照亮场景。 检测器（6）位于照明装置（22）附近并被布置成朝向场景。 处理器（7）响应来自检测器（6）的输出，并且从场景图像中的点的位置确定到该位置的范围。 使用各种技术来确定正在考虑哪个投影点的模糊性。
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公开(公告)号：US20090224801A1
公开(公告)日：2009-09-10
申请号：US12300723
申请日：2007-05-21
申请人： Andrew Charles Lewin
发明人： Andrew Charles Lewin
CPC分类号： G06F7/02 , G06F2207/025
摘要： A pattern matching apparatus for matching input data to a reference data string, wherein: it is implemented in electronic hardware and can be implemented using commercially available FPGAs using all digital processing; it is capable of very fast correlation; input data is received by a 1:N demultiplexer which reduces the clock speed and produces an N channel parallel data signal which is passed to an N wide, M stage shift register; the shift register has an output at each intermediate stage to produce an N by M parallel data signal, each representing a different bit of the input data; the input data is compared with reference data by combining each channel with an appropriate reference data channel using an XOR combination; the results of the bit level XOR comparisons are then combined using OR combinations, conveniently at byte level and then at string level; and the result is a simple match/no match signal.
摘要翻译： 一种用于将输入数据与参考数据串匹配的模式匹配装置，其中：其以电子硬件实现，并且可以使用所有数字处理的市售FPGA实现; 它具有非常快的相关性; 输入数据由1：N解复用器接收，降低时钟速度并产生N沟道并行数据信号，该信号被传送到N宽M级移位寄存器; 移位寄存器在每个中间级具有一个输出，以产生N×M个并行数据信号，每个代表输入数据的不同位; 通过使用XOR组合将每个信道与适当的参考数据信道组合，将输入数据与参考数据进行比较; 然后使用OR组合来比较级别XOR比较的结果，方便地在字节级然后在字符串级; 结果是一个简单的匹配/不匹配信号。
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公开(公告)号：US20100040380A1
公开(公告)日：2010-02-18
申请号：US12518767
申请日：2007-12-17
IPC分类号： H04B10/00
CPC分类号： G06K9/74 , G06E3/00 , H04Q11/0005 , H04Q2011/003 , H04Q2011/0032 , H04Q2011/0035
摘要： An optical correlation apparatus is described which forms first and second parallel optical signals in response to a serial input data stream. The first parallel optical signal is arranged to have bright pulses represent binary 1 and the second parallel optical signal is arranged to have bright pulses represent binary 0. A channel select means, such as an optical switch or amplitude modulators deselects or blocks channels in the first parallel optical signal which correspond to binary 1 in a reference data string and also deselects or blocks channels in the second parallel optical signal which correspond to binary 0 in the reference data string. The remaining optical signals are combined at one or more detectors. Where the input data matches the reference data string each bright pulse in the first and second parallel optical signals is deselected and the detector registers zero intensity. However when there is any mismatch at least one channel will pass a bright pulse to the detector. An instance of zero intensity can therefore be used as an indication of pattern match.
摘要翻译： 描述了一种光学相关装置，其响应于串行输入数据流而形成第一和第二并行光信号。 第一并行光信号被布置成具有表示二进制1的亮脉冲，并且第二并行光信号被布置为具有表示二进制0的亮脉冲。诸如光开关或幅度调制器之类的通道选择装置在第一 平行光信号，其对应于参考数据串中的二进制1，并且还取消选择或阻止与参考数据串中的二进制0对应的第二并行光信号中的信道。 剩余的光信号在一个或多个检测器处组合。 在输入数据与参考数据串匹配的情况下，取消选择第一和第二并行光信号中的每个亮脉冲，并且检测器记录零强度。 然而，当存在任何失配时，至少一个通道将通过明亮的脉冲到检测器。 因此，零强度的实例可以用作模式匹配的指示。
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