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

US20100106269A1 METHOD AND APPARATUS FOR SIGNAL PROCESSING USING TRANSFORM-DOMAIN LOG-COMPANDING 审中-公开
标题翻译：使用变换域日志控制进行信号处理的方法和装置
公开(公告)号：US20100106269A1
公开(公告)日：2010-04-29
申请号：US12428336
申请日：2009-04-22
申请人： Harinath Garudadri , Yen-Liang Shue , Somdeb Majumdar
发明人： Harinath Garudadri , Yen-Liang Shue , Somdeb Majumdar
IPC分类号： G06F17/00 , H04R1/10 , H04B1/034 , H03M7/00 , G04B47/00 , G10L19/00
CPC分类号： H03M7/50 , G10L19/0204 , G10L19/0212 , G10L19/032
摘要： A method and apparatus for audio signal processing by applying log companding on spectral domain or time domain representations of the audio signals to provide an encoded audio signal, which is decoded upon receipt. A frequency domain representation or time domain representation of the audio signal is computed by separating the audio signal into specific frequency bands, each having a coefficient. Log companding with different compression ratios is performed on each coefficient to provide an encoded signal. Upon receipt of the encoded signal, inverse log companding and time frequency or time scale reconstruction are performed to provide the audio signal.
摘要翻译：一种用于音频信号处理的方法和装置，其通过在音频信号的频域或时域表示上应用对数压缩，以提供编码的音频信号，其在接收时被解码。通过将音频信号分离成各自具有系数的特定频带来计算音频信号的频域表示或时域表示。对每个系数执行具有不同压缩比的对数压扩比以提供编码信号。在接收到编码信号时，执行逆对数压缩和时间频率或时标重建以提供音频信号。

2. 发明授权

US08917798B2 Method and apparatus for distributed processing for wireless sensors 有权
标题翻译：无线传感器分布式处理方法和装置
公开(公告)号：US08917798B2
公开(公告)日：2014-12-23
申请号：US12777740
申请日：2010-05-11
申请人： Harinath Garudadri , Pawan K. Baheti , Somdeb Majumdar
发明人： Harinath Garudadri , Pawan K. Baheti , Somdeb Majumdar
IPC分类号： H03K9/00 , H04J3/06 , G01D21/00 , A61B5/00 , G06F19/00
CPC分类号： H04W52/0209 , A61B5/0002 , A61B5/002 , A61B5/0024 , A61B5/7232 , A61B2560/0209 , G01D21/00 , G16H40/63 , H04J3/0658 , H04W4/70
摘要： Certain aspects of the present disclosure relate to a method for compressed sensing (CS). The CS is a signal processing concept wherein significantly fewer sensor measurements than that suggested by Shannon/Nyquist sampling theorem can be used to recover signals with arbitrarily fine resolution. In this disclosure, the CS framework is applied for sensor signal processing in order to support low power robust sensors and reliable communication in Body Area Networks (BANs) for healthcare and fitness applications.
摘要翻译：本公开的某些方面涉及压缩感测（CS）的方法。 CS是一种信号处理概念，其中可以使用比香农/奈奎斯特采样定理所建议的传感器测量少得多的传感器测量来以任意精细的分辨率恢复信号。在本公开中，CS框架被应用于传感器信号处理，以便支持用于医疗保健和健身应用的身体局域网（BAN）中的低功率鲁棒传感器和可靠的通信。

3. 发明授权

US08781822B2 Audio and speech processing with optimal bit-allocation for constant bit rate applications 有权
标题翻译：用于恒定比特率应用的最佳比特分配的音频和语音处理
公开(公告)号：US08781822B2
公开(公告)日：2014-07-15
申请号：US12698534
申请日：2010-02-02
申请人： Somdeb Majumdar , Amin Fazeldehkordi , Harinath Garudadri
发明人： Somdeb Majumdar , Amin Fazeldehkordi , Harinath Garudadri
IPC分类号： G10L19/12 , G10L21/00 , G10L19/00 , G10L19/002 , G10L19/02 , G10L19/035
CPC分类号： G10L19/002 , G10L19/0212 , G10L19/035
摘要： Methods and apparatus for audio and speech processing including generating a plurality of frames, each of the frames comprising a plurality of transform coefficients, and allocating bits to the transform coefficients in each of the frames such that at least two of the transform coefficients in the same frame have different bit allocations and the total number of the bits allocated to the transform coefficients in at least two of the frames is equal.
摘要翻译：用于音频和语音处理的方法和装置，包括生成多个帧，每个帧包括多个变换系数，以及将位分配给每个帧中的变换系数，使得相同的变换系数中的至少两个帧具有不同的比特分配，并且分配给至少两个帧中的变换系数的比特的总数相等。

4. 发明授权

US08780786B2 Method and apparatus for denoising of physiological signals 有权
标题翻译：用于去除生理信号的方法和装置
公开(公告)号：US08780786B2
公开(公告)日：2014-07-15
申请号：US13484105
申请日：2012-05-30
申请人： Mohammed Shoaib , Gene Wesley Marsh , Harinath Garudadri , Somdeb Majumdar
发明人： Mohammed Shoaib , Gene Wesley Marsh , Harinath Garudadri , Somdeb Majumdar
IPC分类号： H04B7/185
CPC分类号： A61B5/7203 , A61B5/0024 , A61B5/0245 , A61B5/0428 , A61B5/0452 , A61B5/721 , G06K9/0051 , G06K9/624
摘要： Certain aspects of the present disclosure relate to techniques for denoising of physiological signals. A signal (e.g., physiological signal) comprising at least two signal channels can be decomposed (e.g., using independent component analysis (ICA)) into at least two independent components. Then, independent component (IC) denoising can be applied to estimate which of the at least two independent components belong to a signal space and which of the at least two independent components belong to a noise space using a statistical metric associated with the at least two signal channels. A de-noised version of the signal can be generated by preserving in the signal only one or more independent components of the at least two independent components belonging to the signal space.
摘要翻译：本公开的某些方面涉及用于去除生理信号的技术。可以将包括至少两个信号通道的信号（例如，生理信号）分解为（例如，使用独立分量分析（ICA））至少两个独立分量。然后，可以应用独立分量（IC）去噪来估计至少两个独立分量中的哪一个属于信号空间，以及至少两个独立分量中的哪一个属于噪声空间，使用与至少两个独立分量相关的统计度量信号通道。可以通过在信号中保留属于信号空间的至少两个独立分量中的一个或多个独立分量来产生信号的去噪声版本。

5. 发明授权

US08589720B2 Synchronizing timing mismatch by data insertion 有权
标题翻译：通过数据插入同步定时不匹配
公开(公告)号：US08589720B2
公开(公告)日：2013-11-19
申请号：US12118469
申请日：2008-05-09
申请人： Harinath Garudadri , Somdeb Majumdar , Rouzbeh Kashef , Chinnappa K. Ganapathy
发明人： Harinath Garudadri , Somdeb Majumdar , Rouzbeh Kashef , Chinnappa K. Ganapathy
IPC分类号： G06F1/04
CPC分类号： H04L7/0016 , G10L19/005 , H04L7/0029 , H04L7/005 , H04L25/05
摘要： The rate at which data is provided by one device and the rate at which that data is processed by another device may differ. For example, a transmitting device may transmit data according to a transmit clock while a receiving device that receives the transmitted data may process the data according to a receive clock. If there is a timing mismatch between the transmit and receive clocks, the receiving device may receive data faster or slower than it processes the data. In such a case, there may be errors relating to the processing of the received data. To address timing mismatches such as this, the receiving device may delete data from or insert data into the received data. In conjunction with these operations, the receiving device may modify the received data at or near the insertion point or the deletion point in a manner that mitigates any adverse effect the insertion or deletion may have on a resulting output signal.
摘要翻译：一个设备提供数据的速率和另一个设备处理该数据的速率可能不同。例如，发送装置可以根据发送时钟发送数据，而接收发送的数据的接收装置可以根据接收时钟处理数据。如果在发送和接收时钟之间存在定时不匹配，则接收设备可能比处理数据更快或更慢地接收数据。在这种情况下，可能存在与接收到的数据的处理有关的错误。为了解决诸如此的定时不匹配，接收设备可以从接收到的数据中删除数据或将数据插入到数据中。结合这些操作，接收设备可以以减轻插入或删除对结果输出信号可能产生的任何不利影响的方式在插入点或删除点处或附近修改接收到的数据。

6. 发明授权

US08493145B2 Switching power amplifier for quantized signals 有权
标题翻译：用于量化信号的开关功率放大器
公开(公告)号：US08493145B2
公开(公告)日：2013-07-23
申请号：US13112232
申请日：2011-05-20
申请人： Harinath Garudadri , Somdeb Majumdar , Daniel Keyes Butterfield , Yi Tang , Sanjay Marthanda
发明人： Harinath Garudadri , Somdeb Majumdar , Daniel Keyes Butterfield , Yi Tang , Sanjay Marthanda
IPC分类号： H03F21/00
CPC分类号： H03F3/2173
摘要： An apparatus and method for communications are disclosed. The apparatus may include an a quantizer having three levels, and a switching power amplifier configured to drive a load having first and second terminals, wherein the switching power amplifier is further configured to switch the first and second terminals between first and second power rails only if the output from the quantizer is at one of the three levels.
摘要翻译：公开了一种用于通信的装置和方法。该装置可以包括具有三个电平的量化器和被配置为驱动具有第一和第二端子的负载的开关功率放大器，其中开关功率放大器还被配置为仅在第一和第二电力轨之间切换第一和第二端子量化器的输出处于三个级别之一。

7. 发明授权

US08423852B2 Channel decoding-based error detection 有权
标题翻译：基于信道解码的错误检测
公开(公告)号：US08423852B2
公开(公告)日：2013-04-16
申请号：US12146301
申请日：2008-06-25
申请人： Harinath Garudadri , Somdeb Majumdar , David Jonathan Julian , Chinnappa K. Ganapathy
发明人： Harinath Garudadri , Somdeb Majumdar , David Jonathan Julian , Chinnappa K. Ganapathy
IPC分类号： H04L1/00 , G06F11/00
CPC分类号： H04L1/0045 , G10L19/005 , H04L1/0057
摘要： Low latency and computationally efficient techniques may be employed to account for errors in data such as low bit-width, oversampled data. In some aspects these techniques may be employed to mitigate audio artifacts associated with sigma-delta modulated audio data. In some aspects an error may be detected in a set of encoded data based on an outcome of a channel decoding process. Upon determining that a set of data may contain at least one error, the set of data may be replaced with another set of data that is based on one or more neighboring data sets. For example, in some aspects a set of data including at least one bit in error may be replaced with data that is generated by applying a cross-fading operation to neighboring data sets. In some aspects a given data bit may be flipped as a result of a linear prediction operation that is applied to PCM equivalent data that is associated with the given data bit and its neighboring data bits. In some aspects a set of data including at least one bit in error may be replaced with data that is generated by performing linear interpolation operations on PCM equivalent data that is associated with neighboring data sets.
摘要翻译：可以采用低延迟和计算有效的技术来解决数据中的错误，例如低位宽度，过采样数据。在一些方面，可以采用这些技术来减轻与Σ-Δ调制音频数据相关联的音频伪影。在一些方面，可以基于信道解码过程的结果在一组编码数据中检测到错误。在确定一组数据可能包含至少一个错误时，可以用基于一个或多个相邻数据集的另一组数据替换该数据集。例如，在一些方面，包括至少一个错误位的一组数据可以由通过对相邻数据集应用交叉衰落操作而产生的数据代替。在一些方面，作为施加到与给定数据位及其相邻数据位相关联的PCM等效数据的线性预测操作的结果，可以翻转给定数据位。在一些方面，包括至少一个错误位的一组数据可以由通过对与相邻数据集相关联的PCM等效数据执行线性内插操作而产生的数据代替。

8. 发明授权

US08879643B2 Data substitution scheme for oversampled data 有权
标题翻译：过采样数据的数据替代方案
公开(公告)号：US08879643B2
公开(公告)日：2014-11-04
申请号：US12146324
申请日：2008-06-25
申请人： Harinath Garudadri , Somdeb Majumdar , David Jonathan Julian , Chinnappa K. Ganapathy
发明人： Harinath Garudadri , Somdeb Majumdar , David Jonathan Julian , Chinnappa K. Ganapathy
IPC分类号： H04B14/04
CPC分类号： H04L1/0045 , G10L19/005 , H04L1/0057
摘要： Low latency and computationally efficient techniques may be employed to account for errors in data such as low bit-width, oversampled data. In some aspects these techniques may be employed to mitigate audio artifacts associated with sigma-delta modulated audio data. In some aspects an error may be detected in a set of encoded data based on an outcome of a channel decoding process. Upon determining that a set of data may contain at least one error, the set of data may be replaced with another set of data that is based on one or more neighboring data sets. For example, in some aspects a set of data including at least one bit in error may be replaced with data that is generated by applying a cross-fading operation to neighboring data sets. In some aspects a given data bit may be flipped as a result of a linear prediction operation that is applied to PCM equivalent data that is associated with the given data bit and its neighboring data bits. In some aspects a set of data including at least one bit in error may be replaced with data that is generated by performing linear interpolation operations on PCM equivalent data that is associated with neighboring data sets.
摘要翻译：可以采用低延迟和计算有效的技术来解决数据中的错误，例如低位宽度，过采样数据。在一些方面，可以采用这些技术来减轻与Σ-Δ调制音频数据相关联的音频伪影。在一些方面，可以基于信道解码过程的结果在一组编码数据中检测到错误。在确定一组数据可能包含至少一个错误时，可以用基于一个或多个相邻数据集的另一组数据替换该数据集。例如，在一些方面，包括至少一个错误位的一组数据可以由通过对相邻数据集应用交叉衰落操作而产生的数据代替。在一些方面，作为施加到与给定数据位及其相邻数据位相关联的PCM等效数据的线性预测操作的结果，可以翻转给定数据位。在一些方面，包括至少一个错误位的一组数据可以由通过对与相邻数据集相关联的PCM等效数据执行线性内插操作而产生的数据代替。

9. 发明申请

US20120263082A1 METHOD AND APPARATUS FOR DISTRIBUTED PROCESSING FOR WIRELESS SENSORS 审中-公开
标题翻译：无线传感器分布式处理方法与装置
公开(公告)号：US20120263082A1
公开(公告)日：2012-10-18
申请号：US13532078
申请日：2012-06-25
申请人： Harinath Garudadri , Pawan Kumar Baheti , Somdeb Majumdar
发明人： Harinath Garudadri , Pawan Kumar Baheti , Somdeb Majumdar
IPC分类号： H04L29/02
CPC分类号： H04W52/0209 , A61B5/0002 , A61B5/002 , A61B5/0024 , A61B5/7232 , A61B2560/0209 , G01D21/00 , G16H40/63 , H04J3/0658 , H04W4/70
摘要： Certain aspects of the present disclosure relate to a method for compressed sensing (CS). The CS is a signal processing concept wherein significantly fewer sensor measurements than that suggested by Shannon/Nyquist sampling theorem can be used to recover signals with arbitrarily fine resolution. In this disclosure, the CS framework is applied for sensor signal processing in order to support low power robust sensors and reliable communication in Body Area Networks (BANs) for healthcare and fitness applications.
摘要翻译：本公开的某些方面涉及压缩感测（CS）的方法。 CS是一种信号处理概念，其中可以使用比香农/奈奎斯特采样定理所建议的传感器测量少得多的传感器测量来以任意精细的分辨率恢复信号。在本公开中，CS框架被应用于传感器信号处理，以便支持用于医疗保健和健身应用的身体局域网（BAN）中的低功率鲁棒传感器和可靠的通信。

10. 发明申请

US20120130645A1 METHOD AND APPARATUS FOR MEASURING BODY IMPEDANCE BASED ON BASEBAND SIGNAL DETECTION 审中-公开
标题翻译：基于基带信号检测测量身体阻抗的方法和装置
公开(公告)号：US20120130645A1
公开(公告)日：2012-05-24
申请号：US13110066
申请日：2011-05-18
申请人： Harinath Garudadri , Pawan K. Baheti , Somdeb Majumdar
发明人： Harinath Garudadri , Pawan K. Baheti , Somdeb Majumdar
IPC分类号： G01N27/02
CPC分类号： A61B5/0531 , A61B5/0022 , A61B5/0024 , A61B5/02416 , A61B5/0402 , A61B5/0536 , A61B5/0816 , A61B5/14551 , A61B5/7232 , G16H40/67 , H03M7/30
摘要： Certain aspects of the present disclosure relate to techniques for measuring body impedance based on baseband signal detection in analog domain. Proposed methods and apparatus are able to measure an impedance of human body based on sub-Nyquist sampling of signals. The proposed techniques can be particularly beneficial for reducing overall sensor power when an actuation signal generates electrical signals corresponding to vital signs in humans.
摘要翻译：本公开的某些方面涉及基于模拟域中的基带信号检测来测量身体阻抗的技术。提出的方法和装置能够基于子奈奎斯特信号采样来测量人体的阻抗。当致动信号产生对应于人类生命体征的电信号时，所提出的技术可以特别有利于降低总传感器功率。

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