-
公开(公告)号：US09178553B2
公开(公告)日：2015-11-03
申请号：US13362277
申请日：2012-01-31
申请人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
发明人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
CPC分类号： H04B1/1676 , H03G3/345 , H04B1/04 , H04B1/1661 , H04B1/7183 , H04S1/007 , H04S2400/09
摘要： Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, a stop band noise signal is extracted from an L+R or L−R signal produced by an FM stereo decoder. A channel quality measure is calculated based on the stop band noise signal and is used to control whether a pop suppression technique is applied to the L+R signal. The channel quality measure and the stop band noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on the L−R signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.
摘要翻译： 描述了用于增强FM接收机的音频质量的系统和方法。 在本文所描述的实施例中，从由FM立体声解码器产生的L + R或L-R信号中提取阻带噪声信号。 基于阻带噪声信号计算信道质量度量，并且用于控制是否对L + R信号应用流行抑制技术。 信道质量测量和阻带噪声信号也被用于在L-R信号和L + R信号的频域中进行单信道噪声抑制。 信道质量测量还用于控制快速衰落补偿过程的应用，其中替换了通过波形外推产生的替换波形的L-R和L + R信号的噪声段。
-
公开(公告)号：US09130643B2
公开(公告)日：2015-09-08
申请号：US13362244
申请日：2012-01-31
申请人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
发明人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
CPC分类号： H04B1/1661 , H03G3/345 , H04B1/04 , H04B1/7183
摘要： Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L−R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L−R noise signal. A channel quality measure is calculated based on the L−R noise signal and is used to control whether a pop suppression technique is applied to an L+R signal obtained from the composite baseband signal to detect and remove noise pulses therefrom. The channel quality measure and the L−R noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on an L−R signal obtained from the composite baseband signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.
摘要翻译： 描述了用于增强FM接收机的音频质量的系统和方法。 在本文描述的实施例中，正交L-R解调被应用于由FM解调器输出的复合基带信号以获得L-R噪声信号。 基于L-R噪声信号计算信道质量度量，并且用于控制是否将弹出抑制技术应用于从复合基带信号获得的L + R信号，以从其检测和去除噪声脉冲。 信道质量测量和L-R噪声信号也被用于在从复合基带信号和L + R信号获得的L-R信号上对频域执行单信道噪声抑制。 信道质量测量还用于控制快速衰落补偿过程的应用，其中替换了通过波形外推产生的替换波形的L-R和L + R信号的噪声段。
-
3.发明授权Methods for improving the efficiency of clock gating within low power clock trees 有权提高低功率时钟树中时钟门控效率的方法公开(公告)号：US06434704B1
公开(公告)日：2002-08-13
申请号：US09375118
申请日：1999-08-16
申请人： Alvar Dean , David C. Garrett , Mircea Stan
发明人： Alvar Dean , David C. Garrett , Mircea Stan
IPC分类号： G06F132
CPC分类号： G06F17/5045 , G06F1/10
摘要： Methods are provided for improving the efficiency of clock gating within low power clock trees. In a first aspect, a correlation level between a plurality of clock gating signals and their corresponding gates which gate a source clock is determined. The clock gating signals and their corresponding gates are combined into a single clock gating signal and a single corresponding gate if a preselected level of correlation exists therebetween. In a second aspect, an area overlap is determined for a plurality of sinks, and one of the gated drovers of the sinks is removed. The sinks of the removed gated driver then are connected to a remaining gated driver driven by a single clock gating signal and a single corresponding gate. In a third aspect, physically proximate sink clusters are rewired to generate a pure clock gating group within each sink cluster if rewiring the clusters increases wiring length by less than a predetermined amount. In a fourth aspect, a clock gating group is selected and the power dissipation is computed for all sinks within the selected group assuming all the sinks therein are wired without clock gating. The power dissipation also is computed assuming all the sinks therein are gated. If the power dissipation for all sinks within the selected group is reduced by individually wiring the sinks therein, the group is ungated. A computer program product also is provided having a computer readable medium with means for performing the first, second, third and/or fourth aspects of the invention.
摘要翻译： 提供了用于提高低功率时钟树中时钟门控效率的方法。 在第一方面，确定多个时钟选通信号与其对源时钟的相应门之间的相关电平。 时钟选通信号及其对应的门被组合成单个时钟门控信号和单个相应的门，如果它们之间存在预选的相关级别。 在第二方面，确定了多个接收器的区域重叠，并且去除了接收器的门控拖动中的一个。 然后，去除的门控驱动器的接收器连接到由单个时钟门控信号和单个相应门驱动的剩余门控驱动器。 在第三方面，重新布线物理上靠近的宿簇，以在每个宿簇内产生纯时钟选通组，如果重新布线，群集将布线长度增加小于预定量。 在第四方面中，选择时钟门控组，并且对于所选择的组中的所有接收器，计算所有接收器的功耗，假定其中的所有接收器没有时钟选通而被连接。 假定其中的所有汇槽均为门控，则计算功耗。 如果通过单独接线其中的接收器来降低所选组内的所有接收器的功耗，则该组是非门控的。 还提供了一种具有计算机可读介质的计算机程序产品，该计算机可读介质具有用于执行本发明的第一，第二，第三和/或第四方面的装置。
-
公开(公告)号：US20130195164A1
公开(公告)日：2013-08-01
申请号：US13362277
申请日：2012-01-31
申请人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
发明人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
CPC分类号： H04B1/1676 , H03G3/345 , H04B1/04 , H04B1/1661 , H04B1/7183 , H04S1/007 , H04S2400/09
摘要： Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, a stop band noise signal is extracted from an L+R or L−R signal produced by an FM stereo decoder. A channel quality measure is calculated based on the stop band noise signal and is used to control whether a pop suppression technique is applied to the L+R signal. The channel quality measure and the stop band noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on the L−R signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.
摘要翻译： 描述了用于增强FM接收机的音频质量的系统和方法。 在本文所描述的实施例中，从由FM立体声解码器产生的L + R或L-R信号中提取阻带噪声信号。 基于阻带噪声信号计算信道质量度量，并且用于控制是否对L + R信号应用流行抑制技术。 信道质量测量和阻带噪声信号也被用于在L-R信号和L + R信号的频域中进行单信道噪声抑制。 信道质量测量还用于控制快速衰落补偿过程的应用，其中替换了通过波形外推产生的替换波形的L-R和L + R信号的噪声段。
-
公开(公告)号：US20130195163A1
公开(公告)日：2013-08-01
申请号：US13362244
申请日：2012-01-31
申请人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
发明人： Juin-Hwey Chen , Thomas F. Baker , Evan S. McCarthy , Jes Thyssen , Walter J. Wihardja , David C. Garrett
CPC分类号： H04B1/1661 , H03G3/345 , H04B1/04 , H04B1/7183
摘要： Systems and methods are described for enhancing the audio quality of an FM receiver. In embodiments described herein, quadrature L−R demodulation is applied to a composite baseband signal output by an FM demodulator to obtain an L−R noise signal. A channel quality measure is calculated based on the L−R noise signal and is used to control whether a pop suppression technique is applied to an L+R signal obtained from the composite baseband signal to detect and remove noise pulses therefrom. The channel quality measure and the L−R noise signal are also leveraged to perform single-channel noise suppression in the frequency domain on an L−R signal obtained from the composite baseband signal and on the L+R signal. The channel quality measure is also used to control the application of a fast fading compensation process that replaces noisy segments of the L−R and L+R signal with replacement waveforms generated via waveform extrapolation.
摘要翻译： 描述了用于增强FM接收机的音频质量的系统和方法。 在本文描述的实施例中，正交L-R解调被应用于由FM解调器输出的复合基带信号以获得L-R噪声信号。 基于L-R噪声信号计算信道质量度量，并且用于控制是否将弹出抑制技术应用于从复合基带信号获得的L + R信号，以从其检测和去除噪声脉冲。 信道质量测量和L-R噪声信号也被用于在从复合基带信号和L + R信号获得的L-R信号上对频域执行单信道噪声抑制。 信道质量测量还用于控制快速衰落补偿过程的应用，其中替换了通过波形外推产生的替换波形的L-R和L + R信号的噪声段。
-
公开(公告)号：US07398446B2
公开(公告)日：2008-07-08
申请号：US10447113
申请日：2003-05-29
申请人： David C. Garrett , Chris J. Nicol
发明人： David C. Garrett , Chris J. Nicol
IPC分类号： H04M13/00
CPC分类号： H03M13/2789 , H03M13/2714 , H03M13/2764
摘要： A first interleaved address generator is configured to generate a first interleaved address, and a second interleaved address generator is configured to generate a second interleaved address substantially concurrently with the first interleaved address generator generating the first interleaved address. A controller is configured to disable the second interleaved address generator from generating the second interleaved address if the second interleaved address is not needed to produce a continuous stream of interleaved addresses.
摘要翻译： 第一交错地址发生器被配置为产生第一交错地址，并且第二交织地址发生器被配置为基本上与产生第一交错地址的第一交错地址生成器同时地产生第二交织地址。 如果不需要第二交错地址来产生连续的交错地址流，则控制器被配置为禁止第二交错地址生成器生成第二交错地址。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.024 秒)
