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. 发明授权

US06681192B2 Systems and methods for fast timer calibration 失效
标题翻译：快速定时器校准的系统和方法
公开(公告)号：US06681192B2
公开(公告)日：2004-01-20
申请号：US09961785
申请日：2001-09-24
申请人： Joseph Cox Ballantyne
发明人： Joseph Cox Ballantyne
IPC分类号： G01D1800
CPC分类号： G06F1/12
摘要： Systems and methods for efficiently and accurately determining a speed of a faster clock having unknown frequency using a slower clock having a known frequency. A series of measurement pairs are taken from the clocks; each measurement pair including one measurement from the slower clock and one measurement—at the same time—from the faster clock. A lower bound and an upper bound for the measurement pairs are determined. The lower bound and the upper bound are averaged to derive a calibration variable that indicates a number of clock cycles that occur on the faster clock during one cycle of the slower clock. The calibration variable is used to time various processes in a computer system.
摘要翻译：使用具有已知频率的较慢时钟来有效且准确地确定具有未知频率的较快时钟的速度的系统和方法。从时钟中取出一系列测量对; 每个测量对包括来自较慢时钟的一个测量和一个测量 - 同时 - 从更快的时钟。确定测量对的下限和上限。平均下限和上限以导出校准变量，其指示在较慢时钟的一个周期期间在更快的时钟上发生的时钟周期数。校准变量用于计算计算机系统中的各种进程。

2. 发明授权

US07120259B1 Adaptive estimation and compensation of clock drift in acoustic echo cancellers 有权
标题翻译：声回波消除器中时钟漂移的自适应估计和补偿
公开(公告)号：US07120259B1
公开(公告)日：2006-10-10
申请号：US10159075
申请日：2002-05-31
申请人： Joseph Cox Ballantyne , Jack Wilson Stokes, III , Henrique S. Malvar
发明人： Joseph Cox Ballantyne , Jack Wilson Stokes, III , Henrique S. Malvar
IPC分类号： A61F11/06 , G10K11/16 , H03B29/00
CPC分类号： H04B3/493 , H04M9/082
摘要： A system and method for adaptive estimation and compensation of clock drift in echo cancellers is provided. The invention includes an acoustic echo cancellation system with a built in adaptive clock drift compensation system. The acoustic echo cancellation system has an AEC component that performs acoustic echo cancellation on data from a capture buffer, by also using information derived from a render buffer. The clock drift compensation system has access to this capture buffer and render buffer. The clock drift compensation system includes a clock drift compensator that calculates, based on the current location of the capture data being processed by the AEC component as well as additional information, the ideal location in the render buffer from which the AEC component should process data. The clock drift compensator further adjusts the current location in the render buffer from which the AEC component processes data based, at least in part, upon this ideal location. The clock drift compensator can further detect and correct for glitches in the hardware positions received from the render and capture devices.
摘要翻译：提供了一种用于回波消除器中的时钟漂移的自适应估计和补偿的系统和方法。本发明包括具有内置自适应时钟漂移补偿系统的声学回波消除系统。声学回声消除系统具有通过也使用从渲染缓冲器导出的信息来执行来自捕获缓冲器的数据的声学回声消除的AEC分量。时钟漂移补偿系统可以访问此捕获缓冲区和渲染缓冲区。时钟漂移补偿系统包括时钟漂移补偿器，其基于由AEC组件处理的捕获数据的当前位置以及附加信息计算AEC组件应从其处理数据的渲染缓冲区中的理想位置。时钟漂移补偿器进一步调整渲染缓冲器中的当前位置，AEC组件至少部分地基于该理想位置处理数据。时钟漂移补偿器可以进一步检测和纠正从渲染和捕获设备接收的硬件位置的毛刺。

3. 发明授权

US07680285B2 Adaptive estimation and compensation of clock drift in acoustic echo cancellers 有权
标题翻译：声回波消除器中时钟漂移的自适应估计和补偿
公开(公告)号：US07680285B2
公开(公告)日：2010-03-16
申请号：US11465098
申请日：2006-08-16
申请人： Joseph Cox Ballantyne , Jack Wilson Stokes, III , Henrique Malvar
发明人： Joseph Cox Ballantyne , Jack Wilson Stokes, III , Henrique Malvar
IPC分类号： A61F11/06
CPC分类号： H04B3/493 , H04M9/082
摘要： A system and method for adaptive estimation and compensation of clock drift in echo cancellers is provided. The invention includes an acoustic echo cancellation system with a built in adaptive clock drift compensation system. The acoustic echo cancellation system has an AEC component that performs acoustic echo cancellation on data from a capture buffer, by also using information derived from a render buffer. The clock drift compensation system has access to this capture buffer and render buffer. The clock drift compensation system includes a clock drift compensator that calculates, based on the current location of the capture data being processed by the AEC component as well as additional information, the ideal location in the render buffer from which the AEC component should process data. The clock drift compensator further adjusts the current location in the render buffer from which the AEC component processes data based, at least in part, upon this ideal location. The clock drift compensator can further detect and correct for glitches in the hardware positions received from the render and capture devices.
摘要翻译：提供了一种用于回波消除器中的时钟漂移的自适应估计和补偿的系统和方法。本发明包括具有内置自适应时钟漂移补偿系统的声学回波消除系统。声学回声消除系统具有通过也使用从渲染缓冲器导出的信息来执行来自捕获缓冲器的数据的声学回声消除的AEC分量。时钟漂移补偿系统可以访问此捕获缓冲区和渲染缓冲区。时钟漂移补偿系统包括时钟漂移补偿器，其基于由AEC组件处理的捕获数据的当前位置以及附加信息计算AEC组件应从其处理数据的渲染缓冲区中的理想位置。时钟漂移补偿器进一步调整渲染缓冲器中的当前位置，AEC组件至少部分地基于该理想位置处理数据。时钟漂移补偿器可以进一步检测和纠正从渲染和捕获设备接收的硬件位置的毛刺。

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