FIR filter of DS-CDMA UWB modem transmitter and control method thereof
    32.
    发明授权
    FIR filter of DS-CDMA UWB modem transmitter and control method thereof 有权
    DS-CDMA UWB调制解调器发射机的FIR滤波器及其控制方法

    公开(公告)号:US07436915B2

    公开(公告)日:2008-10-14

    申请号:US11137468

    申请日:2005-05-26

    IPC分类号: H04B1/10

    摘要: An FIR filter of a DS-CDMA UWB modem transmitter and a control method thereof are disclosed. The FIR filter includes an LUT control device for outputting a resultant value of “0” to all adders if data values corresponding to upper three chips H2, M2 and L2 and lower three chips H, M and L are “000000”, and discriminating which group between a first group and a second group the upper/lower data values belong to if the upper/lower data values are not“000000”. The LUT control device provides upper or lower LUT values to the adders using the upper or lower LUT values as they are, or converts the upper or lower LUT values into 2's complements and provides the converted values to the adders according to the discriminated first or second group.

    摘要翻译: 公开了DS-CDMA UWB调制解调发射机的FIR滤波器及其控制方法。 如果对应于上三个码片H 2,M 2和L 2以及较低的三个码片H,M和L的数据值为“000000”,则FIR滤波器包括LUT控制装置,用于向所有加法器输出结果值“0” 并且如果所述上/下数据值不是“000000”,则鉴别所述上/下数据值属于第一组和第二组之间的组。 LUT控制装置使用上下LUT值向加法器提供上或下LUT值,或者将上或下LUT值转换为2的补码,并根据所识别的第一或第二值向加法器提供转换的值 组。

    Method for controlling power level of received signal in ultra wide band transmission system
    33.
    发明授权
    Method for controlling power level of received signal in ultra wide band transmission system 失效
    控制超宽带传输系统接收信号功率电平的方法

    公开(公告)号:US07260374B2

    公开(公告)日:2007-08-21

    申请号:US10841591

    申请日:2004-05-06

    IPC分类号: H04B1/06

    摘要: Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

    摘要翻译: 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法,包括预增益控制器(PGC)和电压增益放大器(VGA)。 用于控制接收信号的功率电平的方法包括以下步骤:a)在PGC检测在传输系统的发射机中使用哪个多频带; b)在PGC处,由于接收到的信号的功率电平的差异而获得电压增益; 和c)在PGC处,基于电压增益来补偿功率损耗。

    Parallel equalizer for DS-CDMA UWB system and method thereof
    34.
    发明申请
    Parallel equalizer for DS-CDMA UWB system and method thereof 失效
    DS-CDMA UWB系统的并行均衡器及其方法

    公开(公告)号:US20070133670A1

    公开(公告)日:2007-06-14

    申请号:US11635937

    申请日:2006-12-08

    IPC分类号: H03H7/30

    摘要: A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.

    摘要翻译: 提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。 并行均衡器包括:滤波器块,用于以“训练模式”对训练输入信号进行滤波,并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块,并且以“符号判定模式”为每个输入信号估计发送符号,获得误差 估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块,用于基于训练输入信号或符号误差计算输入信号和符号误差来更新滤波器块的滤波器抽头系数,并将更新的滤波器抽头系数发送到滤波器块。

    Rake receiver for DS-CDMA UWB system and DS-CDMA receiver having the same
    35.
    发明申请
    Rake receiver for DS-CDMA UWB system and DS-CDMA receiver having the same 失效
    用于DS-CDMA UWB系统的Rake接收机和具有相同功能的DS-CDMA接收机

    公开(公告)号:US20070133662A1

    公开(公告)日:2007-06-14

    申请号:US11636049

    申请日:2006-12-08

    IPC分类号: H04B1/00

    摘要: A rake receiver for DS-CDMA UWB system and a DS-CDMA receiver having the same are provided. The rake receiver includes: a channel estimator for estimating a channel having a predetermined chip duration by using a synchronization acquisition sequence; a tracking module for detecting a channel variation and adjusting a synchronization position value when the channel variation is detected; a first switch for selecting one of an output value of an analog-to-digital converter and an output value of a correlator and outputting the selected value; a second switch for selecting one of the output value of the analog-to-digital converter and the output value of the correlator; and a plurality of demodulators having a parallel processing structure to demodulate received signals by using the channel estimation value inputted from the channel estimator, the synchronization position value stored by the tracking module, and an output value of the second switch.

    摘要翻译: 提供了一种用于DS-CDMA UWB系统的瑞克接收机和具有该接收机的DS-CDMA接收机。 耙式接收机包括:信道估计器,用于通过使用同步获取序列来估计具有预定码片持续时间的信道; 跟踪模块,用于在检测到信道变化时检测信道变化并调整同步位置值; 用于选择模数转换器的输出值之一和相关器的输出值并输出所选值的第一开关; 用于选择模数转换器的输出值之一和相关器的输出值的第二开关; 以及具有并行处理结构的多个解调器,通过使用从信道估计器输入的信道估计值,由跟踪模块存储的同步位置值和第二开关的输出值来解调接收信号。

    Organic electroluminescent display and driving method thereof
    37.
    发明授权
    Organic electroluminescent display and driving method thereof 有权
    有机电致发光显示及其驱动方法

    公开(公告)号:US07187354B2

    公开(公告)日:2007-03-06

    申请号:US10503026

    申请日:2002-09-19

    IPC分类号: G09G3/10

    摘要: The present invention relates to an organic electroluminescent display and a driving method thereof, which divides one frame into a plurality of subframes. Since the present invention divides one frame into several subframes, and drives an organic EL device with the subframes assigned to the upper bits and with the corrected gray data for representing the detailed grays between the basic grays during the subframes assigned to the lower bits, it is possible to represent sufficient number of grays regardless of the unstable luminescence characteristics of an organic EL device.

    摘要翻译: 本发明涉及将一帧分割为多个子帧的有机电致发光显示器及其驱动方法。 由于本发明将一帧划分成几个子帧,并且驱动具有分配给高位的子帧的有机EL器件,并且使用经校正的灰度数据表示在分配给较低位的子帧期间的基本灰度之间的详细灰度, 可以代表足够数量的灰度,而不管有机EL器件的不稳定发光特性如何。

    Virtual reality cell phone
    39.
    发明授权

    公开(公告)号:US11294190B2

    公开(公告)日:2022-04-05

    申请号:US16904979

    申请日:2020-06-18

    申请人: Sang Kyu Min

    发明人: Sang Kyu Min

    摘要: A virtual reality cell phone includes: a main body including a display; an ocular plate configured to maintain a variable distance from the rear surface of the main body; and a screen and distance adjustment member interposed between the main body and the ocular plate, and configured to move the ocular plate between a retracted state in which the ocular plate comes into close contact with the main body and an extended state in which the ocular plate maintains a predetermined distance from the main body. The screen and distance adjustment member includes a plurality of screen boxes configured to slide backward and be fixed while being laid over each other.

    Virtual reality dual use mobile phone case

    公开(公告)号:US10948727B2

    公开(公告)日:2021-03-16

    申请号:US16303854

    申请日:2017-05-23

    申请人: Sang Kyu Min

    发明人: Sang Kyu Min

    IPC分类号: G02B27/01 A45C13/02 H04M1/05

    摘要: A combined virtual reality and cell phone case can include: a casing fixing a cell phone body; an ocular plate configured to maintain a variable distance from the rear surface of the casing; and a screen and distance adjustment member interposed between the casing and the ocular plate, and configured to move the ocular plate between a retracted state in which the ocular plate comes into close contact with the casing and an extended state in which the ocular plate maintains a predetermined distance from the casing, thereby facilitating implementation of virtual reality.