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    • 1. 发明申请
    • METHOD AND APPARATUS FOR VARIABLY ALLOCATING UPSTREAM AND DOWNSTREAM COMMUNICATION SPECTRA
    • 用于变更分配上游和下游通信频谱的方法和装置
    • WO1998028868A1
    • 1998-07-02
    • PCT/US1997024196
    • 1997-12-24
    • GTE GOVERNMENT SYSTEMS CORPORATION
    • GTE GOVERNMENT SYSTEMS CORPORATIONFURUKAWA, Neil, E.SALINGER, Sheldon
    • H04B15/00
    • H04J1/12H04L1/0001H04L1/0003H04L1/0026H04L1/206H04L5/143H04L27/3827
    • An improved digital bi-directional communications transceiver in which the upstream (24) and downstream (22) portions of the frequency spectrum are allocated different bandwidths and positioned at different locations on the frequency spectrum in response to transmission line conditions and impairments such as system provisioning, background noise, radio frequency interference (RFI), crosstalk and reflected signals. The movements of the upstream and downstream carrier frequencies are elastic in that they may be adjusted in near rear-time, involving methods for determining a signal quality parameter (SQP) of the received signal. The SQP is used to estimate the bit error rate (BER) of the received signal and also takes into account the total signal-to-interference ratio (SIR), where the interference includes, crosstalk, RFI and residual echo from the neighboring upstream (24) or downstream (22) channel. Because the carrier frequencies of the upstream (24) and downstream (22) channels are being dynamically allocated, it is necessary to implement a robust carrier acquisition, recovery and lock algorithm. The robust carrier algorithms allow carrier recovery of the transmitted upstream and downsteam signals independent of the particular modulation or symbol rates.
    • 改进的数字双向通信收发器,其中频谱的上行(24)和下游(22)部分被分配不同的带宽并且响应于传输线条件和诸如系统供应的损害而被定位在频谱上的不同位置 ,背景噪声,射频干扰(RFI),串扰和反射信号。 上游和下游载波频率的运动是弹性的,因为它们可以在近后期进行调整,包括用于确定接收信号的信号质量参数(SQP)的方法。 SQP用于估计接收信号的误码率(BER),并且还考虑了干扰包括来自邻近上游的串扰,RFI和残留回波的总信干比(SIR) 24)或下游(22)通道。 由于上行(24)和下行(22)信道的载波频率正在被动态分配,所以有必要实现鲁棒的载波采集,恢复和锁定算法。 鲁棒的载波算法允许载波恢复所发送的上行和下行信号,而与特定的调制或符号速率无关。
    • 2. 发明申请
    • ELECTROCHEMICAL CELL HAVING WOUND ELECTRODE STRUCTURES
    • 具有电极结构的电化学细胞
    • WO1986003889A1
    • 1986-07-03
    • PCT/US1985002562
    • 1985-12-20
    • GTE GOVERNMENT SYSTEMS CORPORATION
    • GTE GOVERNMENT SYSTEMS CORPORATIONGOEBEL, FranzHASKINS, Timothy, BrooksBATSON, David, Cameron
    • H01M06/10
    • H01M6/10H01M6/14
    • An electrochemical cell (10) has a cathode current collector (20), an anode electrode (21) and a porous insulating material (22) wound in a coil (17) and inserted in a sealed can (11). Cathode current collector (20) has a metal substrate (23) carrying a plurality of holes (24). The metal substrate (23) supports layer (25) of an electrode material such as porous carbon. Both edges (26A, 26B) and one end (28) of the substrate (23) is kept free of material. The bare end (28) of the substrate (23) is on the outside of the coil (17). The substrate (23) is wider than the anode electrode (21) and the cathode current collector (20) of the coil (17), so that when the coil (17) is inserted in the can (11), the substrate (23) makes contact with all the internal surfaces of the can (11).
    • 电化学电池(10)具有卷绕在线圈(17)中并插入密封罐(11)中的阴极集电器(20),阳极电极(21)和多孔绝缘材料(22)。 阴极集电体(20)具有承载多个孔(24)的金属基板(23)。 金属基板(23)支撑多孔碳等电极材料的层(25)。 衬底(23)的两个边缘(26A,26B)和一个端部(28)保持没有材料。 基板(23)的裸露端(28)位于线圈(17)的外侧。 基板(23)比线圈(17)的阳极电极(21)和阴极集电体(20)宽,使得当线圈(17)插入罐(11)时,基板(23) )与罐(11)的所有内表面接触。
    • 3. 发明申请
    • ADAPTIVE PREDISTORTION SYSTEM
    • 自适应预测系统
    • WO1998028888A1
    • 1998-07-02
    • PCT/US1997024194
    • 1997-12-24
    • GTE GOVERNMENT SYSTEMS CORPORATION
    • GTE GOVERNMENT SYSTEMS CORPORATIONSALINGER, Sheldon
    • H04L25/49
    • H04L27/368
    • A method and apparatus are described for adaptively predistorting a signal before it is transmitted by a transmitter (12, 14, 16, 18) in order to compensate for nonlinearities which are introduced. Statistical information regarding the received signal is accumulated at a receiver (24), and is preferably transmitted back to the transmitter for processing. The processing includes a constellation analysis to determine the distortion characteristics of the signal, which may includes bias, gain imbalance, lock and quad angle errors, and nonlinear distortions including AM-AM and AM-FM conversion effects, with all of these phenomena occurring anywhere in the transmitter-channel-receiver chain. From analysis of the statistics of the distortions in the received signal constellation, adjustments are made in the transmitter and/or receiver parameters. The positions of the signal symbols in the transmitted constellation are thereby correctively predistorted to compensate for and ameliorate the distortions in the received signal, thereby improving the fidelity of the said received signal.
    • 描述了一种方法和装置,用于在被发射机(12,14,16,18)发送之前自适应地预失真信号,以便补偿引入的非线性。 关于接收信号的统计信息在接收机(24)处被累积,并且优选地被发送回发送机进行处理。 该处理包括用于确定信号的失真特性的星座分析,其可以包括偏置,增益不平衡,锁定和四角度误差以及包括AM-AM和AM-FM转换效应的非线性失真,所有这些现象发生在任何地方 在发射机 - 信道 - 接收机链中。 从对接收信号星座中的失真统计的分析,在发射机和/或接收机参数中进行调整。 因此,传输星座中的信号符号的位置被校正地预失真以补偿和改善接收信号中的失真,从而改善所述接收信号的保真度。
    • 6. 发明公开
    • BIOMETRIC CERTIFICATES
    • 生物统计证书
    • EP0980559A2
    • 2000-02-23
    • EP98922259.1
    • 1998-05-08
    • GTE GOVERNMENT SYSTEMS CORPORATIONGTE SERVICE CORPORATION
    • DULUDE, RobertMUSGRAVE, Clyde
    • G06K1/00
    • G06Q20/4014G06Q20/04G07C9/00158H04L9/3231H04L9/3247H04L9/3263H04L2209/56
    • A biometric certification system includes a biometric certificates extractor system (64) for extracting biometric certificates (68) which may be used for authentication in any electronic transaction having biometric database (66) for pre-storing the obtained biometric data corresponding to physical characteristics of registered users throughout a biometric input device. Subsequent transaction to be conducted over the network (60) have digital signatures (58) generated from the physical characteristics of a current user and from the electronic transaction. The electronic transaction is authenticated by comparing the hash values in the digital signature with re-created hash values. The user is authenticated by comparison against the pre-stored biometric certificates of the physical characteristics of the users in the biometric database.
    • 生物认证系统包括用于提取可用于具有生物测定数据库(66)的任何电子交易中的生物测定证书(68)的生物测定证书提取器系统(64),生物测定数据库(66)用于预存所获得的与所注册的身体特征相对应的生物测定数据 用户遍布生物识别输入设备。 通过网络(60)进行的后续交易具有根据当前用户的物理特性和电子交易生成的数字签名(58)。 通过将数字签名中的散列值与重新创建的散列值进行比较来认证电子交易。 通过与预先存储的生物特征数据库中的用户的身体特征的生物特征证书进行比较来对用户进行认证。
    • 9. 发明公开
    • Telecommunication system with burst and continuous audio signals
    • 电信系统和无线电通信系统。
    • EP0288890A2
    • 1988-11-02
    • EP88106335.8
    • 1988-04-20
    • GTE SERVICE CORPORATIONGTE LABORATORIES INCORPORATEDGTE GOVERNMENT SYSTEMS CORPORATION
    • Lin, Eric C.W.Tweedy, Ernest P.Beriont, Walter P.Mustafa, Mehmet
    • H04N1/00H04N7/087H04N7/00H04N7/173
    • H04N7/088H04N1/00098H04N7/084H04N7/17354
    • A telecommunication system (10) for transmitting video and plural audio information on a transmission medium (13) includes a facility (11) and an addressable terminal (12). The facility (11) includes arrangements for providing addressed video frames containing information corresponding to still images and for providing addressed audio frames containing information corresponding to audio bursts. There is also means for providing non-addressed signals containing information corresponding to a least one channel of continuous audio. The addressed video frames, addressed audio frames, and non-addressed signals are coupled to the transmission medium (13) and sent to the terminal (12). The addressable terminal (12) includes means for detecting said addressed video frames, addressed audio frames, and non-addressed signals on said transmission medium (13). Circuits select video frames and audio frames in response to their corresponding addresses. Arrangements are made for storing still images contained by selected video frames and for storing and playing audio bursts contained by selected audio frames. Circuits provide continuous audio signals contained by said non-addressed signals. A circuit attenuates the continuous audio signals in response to playing of an audio burst.
    • 一种用于在传输介质(13)上传输视频和多个音频信息的电信系统(10)包括设施(11)和可寻址终端(12)。 设备(11)包括用于提供包含与静止图像相对应的信息的寻址视频帧并且提供包含对应于音频脉冲串的信息的寻址音频帧的布置。 还提供了用于提供包含对应于至少一个连续音频信道的信息的非寻址信号的装置。 寻址的视频帧,寻址的音频帧和非寻址信号被耦合到传输介质(13)并发送到终端(12)。 可寻址终端(12)包括用于在所述传输介质(13)上检测所述寻址视频帧,寻址音频帧和非寻址信号的装置。 电路响应于它们对应的地址选择视频帧和音频帧。 进行安排,用于存储所选择的视频帧所包含的静止图像以及用于存储和播放所选音频帧所包含的音频突发。 电路提供由所述非寻址信号包含的连续音频信号。 响应于音频突发的播放,电路衰减连续的音频信号。