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    Coarse timing estimation system and methodology for wireless symbols
    5.
    发明授权
    Coarse timing estimation system and methodology for wireless symbols 有权
    无线符号的粗定时估计系统和方法

    公开(公告)号：US07860193B2

    公开(公告)日：2010-12-28

    申请号：US11020411

    申请日：2004-12-22

    申请人： Alok Kumar Gupta

    发明人： Alok Kumar Gupta

    IPC分类号： H04L27/06

    CPC分类号： H04L27/2665 ,  H04L27/2607 ,  H04L27/2662

    摘要： A system that facilitates obtaining a coarse estimation of a boundary of symbol with respect to time comprises a peak detector that detects a peak energy of an energy distribution output by a correlator, and an estimating component that adaptively estimates a boundary of the symbol based as a function of the detected peak energy. A parameter defined as a function of the magnitude to create a threshold value, the estimate obtained as a function of a comparison of the threshold with the energy distribution.

    摘要翻译： 有助于获得关于时间的符号边界的粗略估计的系统包括检测由相关器输出的能量分布的峰值能量的峰值检测器，以及估计部件，其自适应地将符号的边界估计为 检测到的峰值能量的功能。 定义为产生阈值的幅度的函数的参数，作为阈值与能量分布的比较的函数获得的估计。

    Heat treatment process for aluminum alloy sheet
    7.
    再颁专利
    Heat treatment process for aluminum alloy sheet 失效
    铝合金板材热处理工艺

    公开(公告)号：USRE36692E

    公开(公告)日：2000-05-16

    申请号：US113619

    申请日：1998-07-10

    申请人： Alok Kumar Gupta ,  Michael J. Wheeler ,  Michael Jackson Bull ,  Pierre Henri Marois

    发明人： Alok Kumar Gupta ,  Michael J. Wheeler ,  Michael Jackson Bull ,  Pierre Henri Marois

    IPC分类号： C22F1/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/14 ,  C22C21/16 ,  C22F1/04 ,  C22F1/043 ,  C22F1/05 ,  C22F1/057

    CPC分类号： C22F1/043 ,  C22C21/02 ,  C22C21/08 ,  C22C21/14 ,  C22C21/16 ,  C22F1/04 ,  C22F1/05 ,  C22F1/057

    摘要： A process of producing solution heat treated aluminum alloy sheet material comprises subjecting hot- or cold-rolled aluminum alloy sheet to solution heat treatment followed by quenching and, before substantial age hardening has taken place, subjecting the alloy sheet material to one or more subsequent heat treatments involving heating the material to a peak temperature in the range of 100.degree. to 300.degree. C. (preferably 130.degree.-270.degree. C.), holding the material at the peak temperature for a period of time less than about 1 minute, and cooling the alloy from the peak temperature to a temperature of 85.degree. C. or less. The sheet material treated in this way can be used for automotive panels and has good a good "paint bake response", i.e. an increase in yield strength from the T4 temper to the T8X temper upon painting and baking of the panels.

    摘要翻译： 制备固溶热处理的铝合金板材的方法包括将热轧或冷轧铝合金板材进行固溶热处理，然后淬火，并且在大量时效硬化之前，对合金板材进行一个或多个随后的热处理 包括将材料加热到100℃至300℃（优选130℃-270℃）的峰值温度的处理，将材料保持在峰值温度下时间小于约1分钟，以及 将合金从峰值温度冷却至85℃以下的温度。 以这种方式处理的片材可以用于汽车面板，并且具有良好的“烤漆响应”，即在面漆的涂漆和烘烤时从T4回火到T8X回火的屈服强度的增加。

    Air purification system
    8.
    发明授权
    Air purification system 有权

    公开(公告)号：US11673147B2

    公开(公告)日：2023-06-13

    申请号：US17045198

    申请日：2019-03-04

    申请人： Praful Ramachandra Naik ,  Alok Kumar Gupta

    发明人： Praful Ramachandra Naik ,  Alok Kumar Gupta

    IPC分类号： B03C3/41 ,  B03C3/019 ,  B03C3/36 ,  B03C3/47 ,  B03C3/49 ,  A61L9/22

    CPC分类号： B03C3/41 ,  B03C3/019 ,  B03C3/368 ,  B03C3/47 ,  B03C3/49 ,  A61L9/22 ,  A61L2209/14

    摘要： The present disclosure envisages an air purification system. The system comprises includes a shell, a blower, an electrode and a plurality of spikes. The shell has electrically-grounded wall(s), an inlet, and an outlet. The blower generates flow of air through the shell. The electrode is fitted within the shell between the inlet and the outlet and is electrically isolated from the shell body. The spikes extend from the electrode. The spikes have tips spaced apart from the inner surfaces of the walls and generate a corona between the tips and the inner surface of the walls when an high voltage electric current is passed through the electrode and thereby ionize gases and charge particles present in the air resulting in the particles being deposited on the inner surface of the walls of the shell.

    Dual-loop automatic frequency control for wireless communication
    9.
    发明授权
    Dual-loop automatic frequency control for wireless communication 有权
    双回路自动频率控制用于无线通信

    公开(公告)号：US08401503B2

    公开(公告)日：2013-03-19

    申请号：US11358996

    申请日：2006-02-21

    申请人： Seong Taek Chung ,  Vinay Murthy ,  Alok Kumar Gupta ,  Fuyun Ling

    发明人： Seong Taek Chung ,  Vinay Murthy ,  Alok Kumar Gupta ,  Fuyun Ling

    IPC分类号： H04B1/18

    CPC分类号： H03J7/04 ,  H03J1/0083

    摘要： Techniques for performing frequency control using dual-loop automatic frequency control (AFC) are described. The dual-loop AFC includes an inner loop that corrects short-term frequency variations (e.g., due to Doppler effect) and an outer loop that corrects long-term frequency variations (e.g., due to component tolerances and temperature variations). In one design, a first inner loop is implemented for frequency control of a first system (e.g., a broadcast system), a second inner loop is implemented for frequency control of a second system (e.g., a cellular system), and at least one outer loop is implemented for adjusting a reference frequency used to receive signals from the first and second systems. Each inner loop estimates and corrects the frequency error in an input signal for the associated system and may be enabled when receiving the input signal from the system. The reference frequency may be used for frequency downconversion, sampling and/or other purposes.

    摘要翻译： 描述了使用双回路自动频率控制（AFC）进行频率控制的技术。 双回路AFC包括校正短期频率变化（例如，由于多普勒效应引起的）的内部循环和校正长期频率变化（例如由于部件公差和温度变化）的外部回路。 在一种设计中，为第一系统（例如，广播系统）的频率控制实现第一内环，为第二系统（例如，蜂窝系统）的频率控制实现第二内环，并且至少一个 实现外部环路，用于调整用于从第一和第二系统接收信号的参考频率。 每个内循环估计和校正相关系统的输入信号中的频率误差，并且当从系统接收输入信号时可以使能频率误差。 参考频率可用于下变频，采样和/或其他目的。

    Heat treatment process for aluminum alloy sheet
    10.
    发明授权
    Heat treatment process for aluminum alloy sheet 失效
    铝合金板材热处理工艺

    公开(公告)号：US5728241A

    公开(公告)日：1998-03-17

    申请号：US764983

    申请日：1996-12-13

    申请人： Alok Kumar Gupta ,  Michael J. Wheeler ,  Michael J. Bull ,  Pierre H. Marois

    发明人： Alok Kumar Gupta ,  Michael J. Wheeler ,  Michael J. Bull ,  Pierre H. Marois

    IPC分类号： C22F1/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/14 ,  C22C21/16 ,  C22F1/04 ,  C22F1/043 ,  C22F1/05 ,  C22F1/057

    CPC分类号： C22F1/043 ,  C22C21/02 ,  C22C21/08 ,  C22C21/14 ,  C22C21/16 ,  C22F1/04 ,  C22F1/05 ,  C22F1/057

    摘要： A process of producing solution heat treated aluminum alloy sheet material comprises subjecting hot- or cold-rolled aluminum alloy sheet to solution heat treatment followed by quenching and, before substantial age hardening has taken place, subjecting the alloy sheet material to one or more subsequent heat treatments involving heating the material to a peak temperature in the range of 100.degree. to 300.degree. C. (preferably 130.degree.-270.degree. C.), holding the material at the peak temperature for a period of time less than about 1 minute, and cooling the alloy from the peak temperature to a temperature of 85.degree. C. or less. The sheet material treated in this way can by used for automotive panels and has good a good "paint bake response", i.e. an increase in yield strength from the T4 temper to the T8X temper upon painting and baking of the panels.

    摘要翻译： 制备固溶热处理的铝合金板材的方法包括将热轧或冷轧铝合金板材进行固溶热处理，然后淬火，并且在大量时效硬化之前，对合金板材进行一个或多个随后的热处理 包括将材料加热到100℃至300℃（优选130℃-270℃）的峰值温度的处理，将材料保持在峰值温度下时间小于约1分钟，以及 将合金从峰值温度冷却至85℃以下的温度。 以这种方式处理的片材可以用于汽车面板，并且具有良好的“烤漆响应”，即在面漆的涂漆和烘烤时从T4回火到T8X回火的屈服强度的增加。