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1. 发明授权

US08890608B2 Digital input class-D audio amplifier 有权
标题翻译：数字输入D类音频放大器
公开(公告)号：US08890608B2
公开(公告)日：2014-11-18
申请号：US13408400
申请日：2012-02-29
申请人： Farzad Sahandiesfanjani , Peter Kavanagh
发明人： Farzad Sahandiesfanjani , Peter Kavanagh
IPC分类号： H03F3/38 , H03F3/217 , H03F99/00
CPC分类号： H03F1/30 , H03F3/181 , H03F3/2175 , H03F3/45475 , H03F2200/405 , H03F2203/45512 , H03F2203/45528 , H03F2203/45594
摘要： An audio amplifier receiving a digital input audio signal and generating an output audio signal for driving a speaker includes a digital input class D amplifier configured to receive the digital input audio signal and to generate the output audio signal. The digital input class D amplifier includes a first modulator configured to receive the digital input audio signal and to generate a quasi-digital signal in n-bit, and a class D modulator configured to receive the n-bit quasi-digital signal and to generate the output audio signal, the class D modulator implementing an analog feedback loop. In some embodiments, the class D modulator is implemented using a PWM modulator. In other embodiments, the PWM modulator incorporates enhanced features to improve the output noise characteristics.
摘要翻译：接收数字输入音频信号并产生用于驱动扬声器的输出音频信号的音频放大器包括配置成接收数字输入音频信号并产生输出音频信号的数字输入D类放大器。数字输入D类放大器包括：第一调制器，被配置为接收数字输入音频信号并产生n位的准数字信号，以及D类调制器，被配置为接收n位准数字信号并产生输出音频信号，D类调制器实现模拟反馈回路。在一些实施例中，使用PWM调制器来实现D类调制器。在其他实施例中，PWM调制器包含增强特征以改善输出噪声特性。

2. 发明申请

US20130223652A1 Digital Input Class-D Audio Amplifier 有权
标题翻译：数字输入D类音频放大器
公开(公告)号：US20130223652A1
公开(公告)日：2013-08-29
申请号：US13408400
申请日：2012-02-29
申请人： Farzad Sahandiesfanjani , Peter Kavanagh
发明人： Farzad Sahandiesfanjani , Peter Kavanagh
IPC分类号： H03F99/00
CPC分类号： H03F1/30 , H03F3/181 , H03F3/2175 , H03F3/45475 , H03F2200/405 , H03F2203/45512 , H03F2203/45528 , H03F2203/45594
摘要： An audio amplifier receiving a digital input audio signal and generating an output audio signal for driving a speaker includes a digital input class D amplifier configured to receive the digital input audio signal and to generate the output audio signal. The digital input class D amplifier includes a first modulator configured to receive the digital input audio signal and to generate a quasi-digital signal in n-bit, and a class D modulator configured to receive the n-bit quasi-digital signal and to generate the output audio signal, the class D modulator implementing an analog feedback loop. In some embodiments, the class D modulator is implemented using a PWM modulator. In other embodiments, the PWM modulator incorporates enhanced features to improve the output noise characteristics.
摘要翻译：接收数字输入音频信号并产生用于驱动扬声器的输出音频信号的音频放大器包括配置成接收数字输入音频信号并产生输出音频信号的数字输入D类放大器。数字输入D类放大器包括：第一调制器，被配置为接收数字输入音频信号并产生n位的准数字信号，以及D类调制器，被配置为接收n位准数字信号并产生输出音频信号，D类调制器实现模拟反馈回路。在一些实施例中，使用PWM调制器来实现D类调制器。在其他实施例中，PWM调制器包含增强特征以改善输出噪声特性。

3. 外观设计

USD505716S1 Gutter system 失效
标题翻译：沟槽系统
公开(公告)号：USD505716S1
公开(公告)日：2005-05-31
申请号：US29196823
申请日：2004-01-07
申请人： Peter Kavanagh
设计人： Peter Kavanagh

4. 发明授权

US5621821A Apparatus and method for detecting distortions in processed image data 失效
标题翻译：用于检测经处理的图像数据中的失真的装置和方法
公开(公告)号：US5621821A
公开(公告)日：1997-04-15
申请号：US365057
申请日：1994-12-28
申请人： James B. Pearman , Peter Kavanagh
发明人： James B. Pearman , Peter Kavanagh
IPC分类号： G09G5/06 , G06T5/00 , H04N1/40 , H04N1/407 , H04N1/62 , G06K9/00
CPC分类号： H04N1/4072 , H04N1/622
摘要： A system for the analysis of image data 48 that has been subject to one or more processing operations is described. The image data is displayed using a display palette 30 which maps pixel values PV to displayable appearances RGB, I. Under user control, a sub-section of the pixel values are mapped to enhanced displayable appearances so as to make small variations in the pixel values more visible. A palette scale 54 illustrating the mapping being performed by the palette 30 is displayed adjacent to the image 48 being analyzed. In addition, a graph 60 of the variation of pixel value along a given analysis line 62 is displayed to assist quantative analysis.
摘要翻译：描述用于分析已经经历一个或多个处理操作的图像数据48的系统。使用将像素值PV映射到可显示外观RGB，I的显示调色板30显示图像数据。在用户控制下，将像素值的子部分映射到增强的可显示外观，以便使像素值变小更明显示出了由调色板30执行的映射的调色板刻度54与被分析的图像48相邻地显示。此外，显示沿着给定分析线62的像素值的变化的曲线图60以辅助定量分析。

5. 发明授权

US5499373A Apparatus and methods for designing, analyzing or simulating signal processing functions 失效
标题翻译：用于设计，分析或模拟信号处理功能的装置和方法
公开(公告)号：US5499373A
公开(公告)日：1996-03-12
申请号：US337150
申请日：1994-11-09
申请人： John W. Richards , Jonathan J. Stone , Alan Turner , Carl W. Walters , Mukesh Chouhan , Peter Kavanagh
发明人： John W. Richards , Jonathan J. Stone , Alan Turner , Carl W. Walters , Mukesh Chouhan , Peter Kavanagh
IPC分类号： H04N9/00 , G06F17/50 , H04N5/765 , H04N5/926 , G06F15/00
CPC分类号： G06F17/5009 , H04N5/9265 , H04N5/765
摘要： Data to be processed is stored within data files 20. Associated with each data file 20 is a header file 18. The header files 18 store data specifying a wide range of attributes of the data within the data files 20. A user selects a particular signal processing function 14 that he desires to use and this then accesses one or mope selected data files 20 and associated header files 18. The selected signal processing tool 14 only needs a set of the attributes stored within the header files 18. The signal processing tool 14 reads those attributes it requires and then manipulates the data within the data file 20. The provision of this structure allows a wide range of signal processing function tools to be integrated into a single system which may also be simply expanded.
摘要翻译：要处理的数据被存储在数据文件20中。与每个数据文件20相关联的是头文件18.头文件18存储指定数据文件20内数据的宽范围属性的数据。用户选择特定信号处理功能14，然后它访问一个或者选择的数据文件20和相关的头文件18.所选择的信号处理工具14仅需要存储在头文件18内的一组属性。信号处理工具14 读取它需要的属性，然后操纵数据文件20内的数据。提供这种结构允许将广泛的信号处理功能工具集成到单个系统中，这也可以简单地扩展。

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