专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2017066879A1 LASER SPECKLE REDUCTION METHODS AND APPARATUSES 审中-公开
标题翻译：激光散斑减少方法和设备
公开(公告)号：WO2017066879A1
公开(公告)日：2017-04-27
申请号：PCT/CA2016/051218
申请日：2016-10-20
申请人： MA, Qianli , XU, Changqing
发明人： MA, Qianli , XU, Changqing
IPC分类号： G02B27/00 , G02B27/18 , G02B27/48 , H01S5/00
CPC分类号： G02B27/48 , G02B27/102 , H01S5/005 , H01S5/4012 , H01S5/4087
摘要： Systems and methods for reducing speckle effects are described herein. An example system includes a set of light sources to produce light; a decoherence component to adjust the received light to provide an adjusted light having a reduced level of coherence than the received light; a homogenization component to refine the adjusted light to provide a refined light; and an output component to direct the refined light towards an object. The described systems and methods can apply wavelength blending to reduce speckle effects when multiple laser sources with different wavelengths are used.
摘要翻译：这里描述了用于减少斑点效应的系统和方法。示例系统包括用于产生光的一组光源; 退相干组件，用于调节所接收的光以提供与所接收的光相比具有降低的相干水平的调节光; 均化组件，用于细化调整后的光以提供精致的光; 和输出部件以将精制光导向物体。所描述的系统和方法可以应用波长混合来减少当使用具有不同波长的多个激光源时的散斑效应。

2. 发明申请

US20080062029A1 APPARATUS AND METHOD FOR DEMODULATING A MODULATED SIGNAL 有权
标题翻译：用于调制调制信号的装置和方法
公开(公告)号：US20080062029A1
公开(公告)日：2008-03-13
申请号：US11836138
申请日：2007-08-08
申请人： Xu Changqing , Li Zhiping , Hu Saigui , Tan Kai Ren , Wang Tingwu , Tomisawa Masayuki
发明人： Xu Changqing , Li Zhiping , Hu Saigui , Tan Kai Ren , Wang Tingwu , Tomisawa Masayuki
IPC分类号： H03M1/12
CPC分类号： H04L27/2075 , H04L27/0014
摘要： An apparatus for demodulating a modulated signal comprises an analog to digital converter (2, 12) for converting an analog modulated input signal to a digital signal. The analog to digital converter is arranged to sample the input signal at a predetermined sampling rate. A digital down converter (4, 14) then receives the digital signal at the sampling rate. The digital down converter has an associated digital intermediate frequency and reduces the frequency of the digital signal to one quarter of the sampling rate. A low pass filter (6, 16) filters selected frequencies from the digital signal. A frequency offset stage (8, 18) applies a modification to the frequency of the filtered signal to reduce frequency offset therein, and a differential demodulator (10, 20) demodulates the signal after modifying the frequency to reduce the frequency offset. There is also disclosed a method for demodulating a signal.
摘要翻译：用于解调调制信号的装置包括用于将模拟调制输入信号转换为数字信号的模数转换器（2,12）。模数转换器被布置成以预定的采样速率对输入信号进行采样。数字降压转换器（4,14）然后以采样速率接收数字信号。数字下变频器具有相关的数字中频，并将数字信号的频率降低到采样率的四分之一。低通滤波器（6,16）从数字信号滤波所选择的频率。频率偏移级（8,18）对经滤波的信号的频率进行修改以减少其中的频率偏移，并且差分解调器（10,20）在修改频率之后对该信号进行解调以降低频率偏移。还公开了一种解调信号的方法。

3. 发明授权

US07541966B2 Apparatus and method for demodulating a modulated signal 有权
标题翻译：用于解调调制信号的装置和方法
公开(公告)号：US07541966B2
公开(公告)日：2009-06-02
申请号：US11836138
申请日：2007-08-08
申请人： Xu Changqing , Li Zhiping , Hu Saigui , Tan Kai Ren , Wang Tingwu , Tomisawa Masayuki
发明人： Xu Changqing , Li Zhiping , Hu Saigui , Tan Kai Ren , Wang Tingwu , Tomisawa Masayuki
IPC分类号： G08C19/12
CPC分类号： H04L27/2075 , H04L27/0014
摘要： An apparatus for demodulating a modulated signal comprises an analog to digital converter (2, 12) for converting an analog modulated input signal to a digital signal. The analog to digital converter is arranged to sample the input signal at a predetermined sampling rate. A digital down converter (4, 14) then receives the digital signal at the sampling rate. The digital down converter has an associated digital intermediate frequency and reduces the frequency of the digital signal to one quarter of the sampling rate. A low pass filter (6, 16) filters selected frequencies from the digital signal. A frequency offset stage (8, 18) applies a modification to the frequency of the filtered signal to reduce frequency offset therein, and a differential demodulator (10, 20) demodulates the signal after modifying the frequency to reduce the frequency offset. There is also disclosed a method for demodulating a signal.
摘要翻译：用于解调调制信号的装置包括用于将模拟调制输入信号转换为数字信号的模数转换器（2,12）。模数转换器被布置成以预定的采样速率对输入信号进行采样。数字降压转换器（4,14）然后以采样速率接收数字信号。数字下变频器具有相关的数字中频，并将数字信号的频率降低到采样率的四分之一。低通滤波器（6,16）从数字信号滤波所选择的频率。频率偏移级（8,18）对经滤波的信号的频率进行修改以减少其中的频率偏移，并且差分解调器（10,20）在修改频率之后解调该信号以减少频率偏移。还公开了一种解调信号的方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式