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    • 6. 外观设计
    • LED lamp
    • USD1015603S1
    • 2024-02-20
    • US29822342
    • 2022-01-07
    • Xiaojun Li
    • Xiaojun Li
    • FIG. 1 is a front, left, and top perspective view of a LED lamp, showing my design.
      FIG. 2 is a rear, right, and bottom perspective view thereof.
      FIG. 3 is a front elevation view thereof.
      FIG. 4 is a rear elevation view thereof.
      FIG. 5 is a left side elevation view thereof.
      FIG. 6 is a right side elevation view thereof.
      FIG. 7 is a top plan view thereof.
      FIG. 8 is a bottom plan view thereof.
      FIG. 9 is a partial enlarged view of an area labeled 9 in FIG. 2 comprising a light bar; and,
      FIG. 10 is a cross-sectional view of the LED lamp of FIG. 1, taken along section line 10-10 as depicted in FIG. 3.
      The broken lines shown in the drawings are included for the purpose of illustrating portions of the LED lamp that form no part of the claimed design.
    • 9. 发明授权
    • Method for correcting errors from a jamming signal in a frequency hopped
spread spectrum communication system
    • 用于在跳频扩频通信系统中从干扰信号中校正误差的方法
    • US5793795A
    • 1998-08-11
    • US760354
    • 1996-12-04
    • Xiaojun Li
    • Xiaojun Li
    • H04B1/713H04B1/715H04L1/00H04L27/10H04Q7/16H04B1/69
    • H04L1/0057H04B1/713H04B1/715H04L27/10
    • A selective call communication system (10) has a selective call device (100) for transmitting a frequency hopped spread spectrum signal (320) encoded as Reed Solomon code words and modulated as a four-level frequency shift keying (4FSK) signal. A base site transceiver (156) receives the signal on a plurality of narrow band channels. A digital signal processor (DSP)(152) performs a fast fourier transform on the signal to generate frequency samples. The DSP (152) has a comparator (342) that compares an 4FSK symbol to a predetermined threshold, a determinator (344), in response to the comparator (342), determines when there is an interference signal jamming the narrow band channel, an erasure marker (346) marks a position in the Reed Solomon symbol determined to be jammed as an erasure and an error correcting code (348) corrects errors in the Reed Solomon code words marked with erasures.
    • 选呼通信系统(10)具有用于发送被编码为里德所罗门码字的跳频扩频信号(320)的选呼通信装置(100),并被调制为四电平频移键控(4FSK)信号。 基站收发器(156)在多个窄带信道上接收信号。 数字信号处理器(DSP)(152)对信号执行快速傅立叶变换以产生频率采样。 DSP(152)具有比较器(342),其将4FSK符号与预定阈值进行比较,确定器(344)响应于比较器(342),确定何时存在干扰窄带信道的干扰信号, 擦除标记(346)标记被确定为被卡住的里德所罗门符号作为擦除的位置,并且纠错码(348)校正用擦除标记的里德所罗门码字中的错误。
    • 10. 发明授权
    • MBE synthesizer for very low bit rate voice messaging systems
    • 用于非常低比特率语音消息系统的MBE合成器
    • US5684926A
    • 1997-11-04
    • US592252
    • 1996-01-26
    • Jian-Cheng HuangXiaojun LiFloyd Simpson
    • Jian-Cheng HuangXiaojun LiFloyd Simpson
    • G10L11/04G10L19/02G10L19/14G10L5/02
    • G10L19/16G10L19/09G10L19/10
    • An MBE synthesizer (116) for generating a segment of speech from compressed speech data received by a receiver (2004). The compressed speech data includes one or more indexes (2240, 2242) and pitch data (2248). The MBE synthesizer (116) includes the following: an excitation generator (2222) utilizing a transform function for generating transformed excitation components responsive to the pitch data (2248). A memory (3006) for storing a table of predetermined spectral vectors (2205) and associated predetermined voicing vectors (2203). A harmonic amplitude estimator (2209) that is responsive to the one or more predetermined spectra/vectors identified by the indexes (2240, 2242) received, that generates harmonic amplitude control signals. The harmonic amplitude estimator (2209) which includes a peak detector (2503), a peak enhancer (2505), a valley detector (2507), a valley enhancer (2509). A multi-band voicing controller (2214), responsive to the predetermined voicing vectors which are associated with the one or more predetermined spectral vectors identified, for controlling a selection of the excitation components.
    • 一种用于从由接收机接收的压缩语音数据产生语音段的MBE合成器(116)。 压缩语音数据包括一个或多个索引(2240,2242)和音调数据(2248)。 MBE合成器(116)包括以下:利用变换函数的激励发生器(2222),用于响应于音调数据(2248)产生变换的激励分量。 一种用于存储预定光谱向量(2205)和相关联的预定发声矢量(2203)的表的存储器(3006)。 响应于由所接收的指标(2240,2242)所识别的一个或多个预定光谱/矢量的谐波振幅估计器(2209),其产生谐波幅度控制信号。 谐波振幅估计器(2209)包括峰值检测器(2503),峰值增强器(2505),谷值检测器(2507),谷值增强器(2509)。 多频带发声控制器(2214)响应于与所识别的一个或多个预定频谱矢量相关联的预定语音向量,用于控制激励分量的选择。