会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 52. 发明授权
    • Echo canceller and echo cancellation method
    • 回波消除器和回波消除方法
    • US09282195B2
    • 2016-03-08
    • US14368953
    • 2012-03-15
    • Tao XueTao SunDongmei LiuJinjun WangQi ZhangXia Wang
    • Tao XueTao SunDongmei LiuJinjun WangQi ZhangXia Wang
    • H04M1/00H04M9/08G10K11/16
    • H04M9/082G10K11/16
    • An echo canceller and an echo cancellation method are provided. The echo canceller includes a self-adaptive filter, a voice signal detection portion and a path change detection portion; a far-end voice signal is propagated in an echo path through a speaker and is picked up by a microphone to form an echo signal. The self-adaptive filter is configured to receive the far-end voice signal as a training signal to simulate the echo path, and cancel the echo signal in a near-end signal. The voice signal detection portion is configured to detect a communication status, control the self-adaptive filter according to the communication status, and control startup of the path change detection portion according to the communication status. The path change detection portion is configured to detect whether a change occurs on the echo path, and control the self-adaptive filter according to whether the change occurs on the echo path.
    • 提供回声消除器和回声消除方法。 回波消除器包括自适应滤波器,语音信号检测部分和路径变化检测部分; 远端语音信号通过扬声器在回波路径中传播,并由麦克风拾取以形成回波信号。 自适应滤波器被配置为接收远端语音信号作为训练信号以模拟回波路径,并且消除近端信号中的回波信号。 语音信号检测部被配置为检测通信状态,根据通信状态来控制自适应滤波器,并且根据通信状态来控制路径变化检测部的启动。 路径变化检测部被配置为检测在回波路径上是否发生变化,并且根据在回波路径上是否发生变化来控制自适应滤波器。
    • 54. 发明授权
    • Stereo coding method and apparatus
    • 立体声编码方法和装置
    • US09105265B2
    • 2015-08-11
    • US13567982
    • 2012-08-06
    • Wenhai WuLei MiaoYue LangQi Zhang
    • Wenhai WuLei MiaoYue LangQi Zhang
    • H04R5/00G10L19/008
    • G10L19/008G10L25/06
    • A stereo coding method includes transforming a stereo left channel signal and a stereo right channel signal in a time domain to a frequency domain to form a left channel signal and a right channel signal in the frequency domain; down-mixing the left channel signal and the right channel signal in the frequency domain to generate a monophonic down-mix signal, and transmitting bits obtained after quantization coding is performed on the down-mix signal; extracting spatial parameters of the left channel signal and the right channel signal in the frequency domain; estimating a group delay and a group phase between stereo left and right channels by using the left channel signal and the right channel signal in the frequency domain; and performing quantization coding on the group delay, the group phase and the spatial parameters, so as to obtain a high-quality stereo coding performance at a low bit rate.
    • 立体声编码方法包括将时域中的立体声左声道信号和立体声右声道信号变换为频域,以在频域中形成左声道信号和右声道信号; 在频域中对左声道信号和右声道信号进行下混频以产生单声道降混信号,并且对缩小混音信号执行在量化编码之后获得的发送比特; 在频域中提取左声道信号和右声道信号的空间参数; 通过使用左声道信号和频域中的右声道信号来估计立体声左和右声道之间的组延迟和组相位; 对组延迟,组相位和空间参数进行量化编码,以便以低比特率获得高质量的立体声编码性能。
    • 55. 发明授权
    • Lamp ballast having filament heating apparatus for gas discharge lamp
    • 具有气体放电灯灯丝加热装置的灯具镇流器
    • US09013106B2
    • 2015-04-21
    • US13242170
    • 2011-09-23
    • Weiqiang ZhangQi ZhangYan ZhongChing-Ho ChouJianping Ying
    • Weiqiang ZhangQi ZhangYan ZhongChing-Ho ChouJianping Ying
    • H01J13/32H05B41/295
    • H05B41/295
    • Provided is a lamp ballast having a filament heating apparatus for gas discharge lamp, including a PFC converter for receiving an AC input voltage and converting the AC input voltage into a DC bus voltage; an inverter connected to an output end of the PFC converter for converting the DC bus voltage into an AC output voltage for driving gas discharge lamps; and a filament heating apparatus connected to the output end of the PFC converter. The filament heating apparatus includes an auxiliary heating circuit for converting the DC bus voltage into a heating power for pre-heating the filaments of the gas discharge lamps; and a control circuit connected to the inverter and the auxiliary heating circuit for generating an auxiliary voltage according to the heating power to activate the PFC converter. After the auxiliary heating circuit has been operating for a predetermined period of time, the auxiliary heating circuit is turned off first and then the inverter is turned on; or otherwise the inverter is turned on first and then the auxiliary heating circuit is turned off.
    • 提供一种具有用于气体放电灯的灯丝加热装置的灯镇流器,包括用于接收AC输入电压并将AC输入电压转换成DC总线电压的PFC转换器; 连接到PFC转换器的输出端的逆变器,用于将DC总线电压转换成用于驱动气体放电灯的AC输出电压; 以及连接到PFC转换器的输出端的灯丝加热装置。 灯丝加热装置包括辅助加热电路,用于将直流母线电压转换成用于对气体放电灯的细丝进行预热的加热功率; 以及连接到逆变器和辅助加热电路的控制电路,用于根据加热功率产生辅助电压以激活PFC转换器。 在辅助加热电路已经运行预定时间段之后,首先关闭辅助加热电路,然后使逆变器接通; 否则逆变器首先接通,然后辅助加热电路关闭。
    • 57. 发明申请
    • ECHO CANCELLER AND ECHO CANCELLATION METHOD
    • ECHO CANCELLER和ECHO CANCELLATION方法
    • US20140329568A1
    • 2014-11-06
    • US14368953
    • 2012-03-15
    • Tao XueTao SunDongmei LiuJinjun WangQi ZhangXia Wang
    • Tao XueTao SunDongmei LiuJinjun WangQi ZhangXia Wang
    • H04M9/08G10K11/16
    • H04M9/082G10K11/16
    • An echo canceller and an echo cancellation method are provided. The echo canceller includes a self-adaptive filter, a voice signal detection portion and a path change detection portion; a far-end voice signal is propagated in an echo path through a speaker and is picked up by a microphone to form an echo signal. The self-adaptive filter is configured to receive the far-end voice signal as a training signal to simulate the echo path, and cancel the echo signal in a near-end signal. The voice signal detection portion is configured to detect a communication status, control the self-adaptive filter according to the communication status, and control startup of the path change detection portion according to the communication status. The path change detection portion is configured to detect whether a change occurs on the echo path, and control the self-adaptive filter according to whether the change occurs on the echo path.
    • 提供回声消除器和回声消除方法。 回波消除器包括自适应滤波器,语音信号检测部分和路径变化检测部分; 远端语音信号通过扬声器在回波路径中传播,并由麦克风拾取以形成回波信号。 自适应滤波器被配置为接收远端语音信号作为训练信号以模拟回波路径,并且消除近端信号中的回波信号。 语音信号检测部被配置为检测通信状态,根据通信状态来控制自适应滤波器,并且根据通信状态来控制路径变化检测部的启动。 路径变化检测部被配置为检测在回波路径上是否发生变化,并且根据在回波路径上是否发生变化来控制自适应滤波器。
    • 60. 发明授权
    • Telescopic loudspeaker
    • 伸缩式扬声器
    • US08600092B2
    • 2013-12-03
    • US13505208
    • 2009-10-30
    • Javier Parraga GimenoQi Zhang
    • Javier Parraga GimenoQi Zhang
    • H04R1/02H04R1/28
    • H04R1/2803H04R1/02H04R1/021H04R1/026H04R2420/07
    • A telescopic loudspeaker includes an extendable telescopic body (1) responsible for housing a loudspeaker (2) for generating sound from a input audio signal and for creating a inner resonance chamber (2) of volume V0 when the telescopic body (1) is retracted and of volume V1 when the telescopic body (1) is extended, V1>V0 being met. The telescopic body (1) includes a support base (15); of hollow bodies (11,12,13) with decreasing transversal sections and coupleable to one another, the section decreasing progressively from the body (11) closest to the base (15) up to the body (13) furthest from the base (15); and a gasket (8) between each pair of consecutive bodies (11,12,13) of the telescopic body (1) for sealing the air chamber inside the enclosure of the telescopic loudspeaker.
    • 伸缩式扬声器包括伸缩式伸缩体(1),其负责容纳用于从输入音频信号产生声音的扬声器(2),并且当伸缩主体(1)缩回时用于产生体积V0的内共振室(2) 当伸缩体(1)伸长时达到V1> V0。 伸缩体(1)包括支撑基座(15); 具有减小横截面且可彼此连接的中空体(11,12,13),该部分从最靠近基部(15)的主体(11)逐渐减小到离基部(15)最远的主体(13) ); 以及在伸缩体(1)的每对连续主体(11,12,13)之间的密封件(8),用于密封伸缩扬声器的外壳内的空气室。