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1. 发明申请

WO2017132594A2 MULTI-CHANNEL AMPLIFIER WITH CONTINUOUS CLASS-D MODULATOR AND EMBEDDED PLD AND RESONANT FREQUENCY DETECTOR 审中-公开
公开(公告)号：WO2017132594A2
公开(公告)日：2017-08-03
申请号：PCT/US2017/015476
申请日：2017-01-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： HEALY, Andrew , VOGEL, Erich H. , POULAIN, Andrew M. , LONG, Gregory J. , BUTLER, Joel A. , LUCE, Angela S. , REVELLI, Luca , NURMUKHANOV, Dossym , COOK, Tanner , TRAVERSO M., Marcelo
IPC分类号： H03F3/217
CPC分类号： H04R5/04 , H03F1/301 , H03F3/183 , H03F3/2173 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2200/447 , H03F2200/468 , H03F2203/45512 , H03F2203/45522 , H03F2203/45528 , H03G3/3005 , H03G2201/208 , H03G2201/708 , H04R29/007 , H04R2420/05 , H04R2430/01 , H04S7/308 , H05B37/029
摘要： A continuous time Class-D modulator with an embedded programmable logic device in a forward path. The FPGA is configured to provide synchronization control by deriving a synchronization clock for the modulator and monitoring a 1-bit PWM signal for sync-lock status; monitoring the PWM duty cycle to detect overage conditions and lowering audio levels to eliminate hard-clipping events; implementing dead-band timing for subsequent output stages; dynamically controlling the net loop delay seen by the 1-bit PWM using programmable delay lines; monitoring amplifier output conditions to provide comparison with the 1-bit PWM or determine load characteristics; monitoring a front-end integrator to trim for optimal distortion (THD+N). An output circuit of an audio amplifier having an analog filter stage comprising an inductor/capacitor (LC) circuit, a physical connector for connecting a speaker, a tuned resonant circuit configured to provide a low-impedance load for the output circuit in the event of an open load on the output circuit by providing damping of a natural resonance of the LC circuit or of high-frequency oscillations in the output circuit, and a resonant frequency detection coupled to the output of the LCR circuit to detect one of a natural resonance oscillation or the high- frequency oscillation condition. The tuned resonant circuit provides modulation control to a closed-loop Class D amplifier with feedback after the output filter.

2. 发明申请

WO2017132583A2 MULTI-CHANNEL CINEMA AMPLIFIER WITH POWER-SHARING, MESSAGING AND MULTI-PHASE POWER SUPPLY 审中-公开
公开(公告)号：WO2017132583A2
公开(公告)日：2017-08-03
申请号：PCT/US2017/015459
申请日：2017-01-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： HEALY, Andrew , VOGEL, Erich H. , POULAIN, Andrew M. , LONG, Gregory J. , BUTLER, Joel A. , LUCE, Angela S. , REVELLI, Luca , NURMUKHANOV, Dossym , COOK, Tanner , TRAVERSO M., Marcelo
IPC分类号： H04R5/04
CPC分类号： H04R5/04 , H03F1/301 , H03F3/183 , H03F3/2173 , H03F3/45475 , H03F3/68 , H03F2200/03 , H03F2200/447 , H03F2200/468 , H03F2203/45512 , H03F2203/45522 , H03F2203/45528 , H03G3/3005 , H03G2201/208 , H03G2201/708 , H04R29/007 , H04R2420/05 , H04R2430/01 , H04S7/308 , H05B37/029
摘要： An integrated cinema amplifier a power supply stage that distributes power over a plurality of channels for rendering immersive audio content in a surround sound listening environment. The amplifier automatically detects maximum and net power availability and requirements based on audio content by decoding audio metadata and dynamically adjusts gains to each channel or sets of channels based on content and operational/environmental conditions. A power supply stage provides power to drive a plurality of channels corresponding to speaker feeds to a plurality of speakers. The amplifier has a front panel having an LED array with each LED associated with a respective channel or group of channels of the multi-channel amplifier, and a control unit configured to light the LEDs according to display patterns based on operating status or error conditions of the amplifier.

3. 发明申请

WO2017132594A3 MULTI-CHANNEL AMPLIFIER WITH CONTINUOUS CLASS-D MODULATOR AND EMBEDDED PLD AND RESONANT FREQUENCY DETECTOR 审中-公开
标题翻译：具有连续D类调制器和嵌入式PLD和谐振频率检测器的多通道放大器
公开(公告)号：WO2017132594A3
公开(公告)日：2017-08-03
申请号：PCT/US2017/015476
申请日：2017-01-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： HEALY, Andrew , VOGEL, Erich H. , POULAIN, Andrew M. , LONG, Gregory J. , BUTLER, Joel A. , LUCE, Angela S. , REVELLI, Luca , NURMUKHANOV, Dossym , COOK, Tanner , TRAVERSO M., Marcelo
IPC分类号： H03F3/217 , H04S7/00 , H04R5/00 , H04R29/00 , H03G3/30 , H03G3/00 , H03F3/68 , H04R5/04 , H02M1/32 , H02M1/42 , H05B37/02 , H02M1/00 , H03F3/181
摘要： A continuous time Class-D modulator with an embedded programmable logic device in a forward path. The FPGA is configured to provide synchronization control by deriving a synchronization clock for the modulator and monitoring a 1-bit PWM signal for sync-lock status; monitoring the PWM duty cycle to detect overage conditions and lowering audio levels to eliminate hard-clipping events; implementing dead-band timing for subsequent output stages; dynamically controlling the net loop delay seen by the 1-bit PWM using programmable delay lines; monitoring amplifier output conditions to provide comparison with the 1-bit PWM or determine load characteristics; monitoring a front-end integrator to trim for optimal distortion (THD+N). An output circuit of an audio amplifier having an analog filter stage comprising an inductor/capacitor (LC) circuit, a physical connector for connecting a speaker, a tuned resonant circuit configured to provide a low-impedance load for the output circuit in the event of an open load on the output circuit by providing damping of a natural resonance of the LC circuit or of high-frequency oscillations in the output circuit, and a resonant frequency detection coupled to the output of the LCR circuit to detect one of a natural resonance oscillation or the high- frequency oscillation condition. The tuned resonant circuit provides modulation control to a closed-loop Class D amplifier with feedback after the output filter.
摘要翻译：具有嵌入式可编程逻辑器件的连续时间D类调制器在前向路径中。 FPGA配置为通过为调制器派生同步时钟并监视1位PWM信号以实现同步锁定状态来提供同步控制; 监测PWM占空比以检测过量状况并降低音频电平以消除硬限幅事件; 为后续输出阶段实现死区定时; 使用可编程延迟线动态控制由1位PWM看到的网络环路延迟; 监视放大器的输出条件，以提供与1位PWM进行比较或确定负载特性; 监视前端积分器进行调整以获得最佳失真（THD + N）。一种音频放大器的输出电路，具有包括电感器/电容器（LC）电路的模拟滤波器级，用于连接扬声器的物理连接器，被配置为在输出电路通过提供LC电路的固有谐振或输出电路中的高频振荡的阻尼来减小输出电路上的开路负载，以及耦合到LCR电路的输出以检测自然谐振振荡中的一个的谐振频率检测或高频振荡条件。调谐谐振电路向输出滤波器后面的带有反馈的闭环D类放大器提供调制控制。

4. 发明申请

WO2017132583A3 MULTI-CHANNEL CINEMA AMPLIFIER WITH POWER-SHARING, MESSAGING AND MULTI-PHASE POWER SUPPLY 审中-公开
标题翻译：多通道电影放大器，带有功率共享，消息传输和多相电源
公开(公告)号：WO2017132583A3
公开(公告)日：2017-08-03
申请号：PCT/US2017/015459
申请日：2017-01-27
申请人： DOLBY LABORATORIES LICENSING CORPORATION
发明人： HEALY, Andrew , VOGEL, Erich H. , POULAIN, Andrew M. , LONG, Gregory J. , BUTLER, Joel A. , LUCE, Angela S. , REVELLI, Luca , NURMUKHANOV, Dossym , COOK, Tanner , TRAVERSO M., Marcelo
IPC分类号： H04R5/04 , H03G3/30 , H03G3/00 , H05B37/02 , H02M1/32 , H04S7/00 , H04R29/00 , H03F3/68 , H02M1/42 , H02M1/00
摘要： An integrated cinema amplifier a power supply stage that distributes power over a plurality of channels for rendering immersive audio content in a surround sound listening environment. The amplifier automatically detects maximum and net power availability and requirements based on audio content by decoding audio metadata and dynamically adjusts gains to each channel or sets of channels based on content and operational/environmental conditions. A power supply stage provides power to drive a plurality of channels corresponding to speaker feeds to a plurality of speakers. The amplifier has a front panel having an LED array with each LED associated with a respective channel or group of channels of the multi-channel amplifier, and a control unit configured to light the LEDs according to display patterns based on operating status or error conditions of the amplifier.
摘要翻译：集成电影放大器电源级，其在多个通道上分配电力以在环绕声收听环境中呈现沉浸式音频内容。放大器通过对音频元数据进行解码，自动检测基于音频内容的最大和净功率可用性和要求，并根据内容和操作/环境条件动态调整每个通道或一组通道的增益。电源级提供电力以驱动对应于扬声器馈送的多个通道到多个扬声器。该放大器具有：具有LED阵列的前面板，其中每个LED与多通道放大器的相应通道或通道组相关联;以及控制单元，被配置为根据基于操作状态或错误条件的显示模式来点亮LED 放大器。

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