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    • 3. 发明授权
    • Systems and methods for time division multiple access communication with automatic repeat request error control
    • 用于具有自动重复请求错误控制的时分多址通信的系统和方法
    • US08693363B2
    • 2014-04-08
    • US13187559
    • 2011-07-21
    • Daniel W. EricsonJun NiAlbert J. Bruso
    • Daniel W. EricsonJun NiAlbert J. Bruso
    • G06F11/00
    • H04L1/1825H04L1/1835H04L1/1887H04L1/20H04L2001/0097
    • Systems (100, 200) and methods for providing TDMA communication. The methods involve determining a channel quality of an uplink channel. A communication delay is set equal to an integer value “K”. “K” is selected based on the channel quality. “K”≦“N”. “N” is a total number of frames of a time slot of a TDMA signal (400). Thereafter, First Message Data (FMD) is communicated over the uplink channel in a first time slot (A1) of an uplink signal (1000, 1100, 1200, 1400, 1500, 1600). An Error Control Process (ECP) is performed using FMD to at least identify First Error Free Message Data (FEFMD). Filler data and/or at least a portion of FEFMD is communicated over a downlink channel in a last “N−K” frames of a time slot (A1) of a downlink signal (1050, 1150, 1250, 1450, 1550, 1650), when “K”
    • 系统(100,200)以及用于提供TDMA通信的方法。 该方法涉及确定上行链路信道的信道质量。 通信延迟被设置为等于整数值“K”。 基于信道质量选择“K”。 “K”&nlE;“N”。 “N”是TDMA信号(400)的时隙的总帧数。 此后,在上行链路信号(1000,1100,1200,1400,1500,1600)的第一时隙(A1)中,通过上行链路信道传送第一消息数据(FMD)。 使用FMD执行错误控制过程(ECP)以至少识别第一错误空闲消息数据(FEFMD)。 在下行链路信号(1050,1150,1250,1450,1550,1650)的时隙(A1)的最后“N-K”个帧中,通过下行链路信道来传送填充数据和/或FEFMD的至少一部分, 当“K”<“N”时。
    • 8. 发明授权
    • Multi-degree-of-freedom geometric error measurement system
    • 多自由度几何误差测量系统
    • US5418611A
    • 1995-05-23
    • US77302
    • 1993-06-14
    • Peisen HuangJun Ni
    • Peisen HuangJun Ni
    • G01B11/26
    • G01B11/26
    • A high resolution, compact size and low cost multi-degree-of-freedom geometric error measurement system for simultaneously measuring four geometric errors, horizontal straightness, vertical straightness, pitch and yaw. The pitch and yaw error measurements are based on a new method of angle measurement in turn based on the internal reflection effect at an air/glass boundary. The method uses a differential detection scheme to largely reduce the inherent non-linearity of the reflectance versus the angle of incidence in internal reflection. With non-linearity reduced, the displacement of the angle of incidence can be determined accurately by measuring the reflectance. The resolution and measurement range are determined by the initial angle of incidence, the polarization state of light, and the number of reflections. Compared with interferometers and autocollimators, this method has the advantage of a simple sensor design for applications ranging from very wide measurement range to extremely high resolution. Apparatus for accomplishing the method comprises a beamsplitter, a pair of critical angle prisms and a pair of photodiodes. Each photodiode measures change in reflectance and with the application of suitable computation means produces an angle measurement of the beam incident to the beamsplitter. The horizontal and vertical straightness are based on a laser alignment technique utilizing a reference beam input through a single-mode fiber beam delivery system. The pointing stability of the beam is thereby significantly improved. As an illustrative example the system is applied to a machine tool slide.
    • 高分辨率,紧凑的尺寸和低成本的多自由度几何误差测量系统,用于同时测量四个几何误差,水平直线度,垂直平直度,俯仰和偏航。 基于在空气/玻璃边界处的内部反射效应,俯仰和偏航误差测量依次基于角度测量的新方法。 该方法使用差分检测方案大大降低反射率与内部反射中入射角的固有非线性关系。 随着非线性的降低,可以通过测量反射率来准确地确定入射角的位移。 分辨率和测量范围由初始入射角,光的偏振状态和反射次数决定。 与干涉仪和自动准直仪相比,该方法具有传感器设计简单的优点,适用范围从非常宽的测量范围到极高的分辨率。 用于实现该方法的装置包括分束器,一对临界角棱镜和一对光电二极管。 每个光电二极管测量反射率的变化,并且适用的计算装置的应用产生入射到分束器的光束的角度测量。 水平和垂直平直度基于利用通过单模光纤束输送系统输入的参考光束的激光对准技术。 因此,光束的指向稳定性显着提高。 作为说明性示例,该系统被应用于机床滑块。
    • 9. 发明授权
    • TDMA voice communication method and apparatus
    • TDMA语音通信方法和装置
    • US08837512B2
    • 2014-09-16
    • US12693014
    • 2010-01-25
    • Daniel Wayne EricsonJun Ni
    • Daniel Wayne EricsonJun Ni
    • H04B7/212H04B7/26H04L1/18H04L1/00
    • H04B7/2656H04L1/0003H04L1/1816H04L1/1845
    • In accordance with a first aspect, a method, apparatus and system is disclosed for communicating within a TDMA communication system comprising receiving data from a plurality of transmitters in a stream of TDMA super-frames, wherein each transmitter transmits payload data in one particular frame within a defined super-frame, each super-frame comprising M frames, where M is a positive integer greater than one, determining, using a processor, a quality of received data from said transmitters, and if the quality of received data from one of said transmitters is below a quality threshold, granting said one of said transmitters the right to transmit data within a second frame in said super-frames, and collectively processing in a processor said data in both frames of said super-frame assigned to said one of said transmitters to reconstruct said data from said one of said transmitters Also, a method, apparatus and system for processing data received in a TDMA communication system utilizing a stream of TDMA super-frames, each super-frame having a structure comprising M frames, each frame designed to carry data of a duration of Y time units, from a different communication channel, where Y is a positive integer, said method comprising dividing said super-frame into N/M hyper-frames, where N is a factor of M, and partitioning said data from each of said transmitters into mini-frames of duration Y/N and interleaving said mini-frames of data from each of said transmitters into a TDMA transport stream comprising super-frames of M*N mini-frame.
    • 根据第一方面,公开了用于在TDMA通信系统内进行通信的方法,装置和系统,包括在TDMA超帧流中从多个发射机接收数据,其中每个发射机在一个特定帧内发送有效载荷数据, 定义的超帧,每个超帧包括M帧,其中M是大于1的正整数,使用处理器确定来自所述发射机的接收数据的质量,以及如果从所述多个帧中的一个接收到的数据的质量 发射机低于质量阈值,允许所述发射机之一在所述超帧中在第二帧内发送数据的权利,并且在处理器中处理所述超帧中的所述两帧的所述数据的所述数据,分配给所述超帧中的所述一个 发射机,用于从所述发射机之一重构所述数据。另外,一种用于处理在TDMA通信系统中接收的数据的方法,装置和系统, TDMA超帧的流,每个超帧具有包括M个帧的结构,每个帧被设计为从不同的通信信道携带Y个时间单元的持续时间的数据,其中Y是正整数,所述方法包括将所述 超帧到N / M超帧,其中N是M的因子,并且将来自每个所述发射机的所述数据分割成具有持续时间Y / N的迷你帧,并且将来自每个所述发射机的所述微帧数据进行交织 转换成包括M * N个迷你帧的超帧的TDMA传输流。