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1. 发明申请

US20090203344A1 Methods and systems for stereo noise mitigation 有权
标题翻译：用于立体声噪声抑制的方法和系统
公开(公告)号：US20090203344A1
公开(公告)日：2009-08-13
申请号：US12313044
申请日：2008-11-17
申请人： Steve W. Hanawalt , Dana Taipale
发明人： Steve W. Hanawalt , Dana Taipale
IPC分类号： H04B1/10
CPC分类号： H04B1/1676
摘要： Methods and systems are disclosed that mitigate stereo noise in FM broadcast receivers by assessing L−R (left-minus-right) and L+R (left-plus-right) levels within tuned FM channels. These assessments are used to facilitate control of a blend from stereo output signals to mono output signals in order to reduce and mitigate stereo noise and distortion in the audio outputs. The side effects of the disclosed systems and methods are unobtrusive as compared to prior blend-to-mono techniques.
摘要翻译：公开了通过评估FM调频通道内的L-R（左 - 右 - 右）和L + R（左 - 右 - 右）电平来减轻FM广播接收机中的立体噪声的方法和系统。这些评估用于促进从立体声输出信号到单声道输出信号的混合控制，以减少和减轻音频输出中的立体声噪声和失真。所公开的系统和方法的副作用与以前的混合到单声道技术相比是不显眼的。

2. 发明授权

US08023918B2 Methods and systems for stereo noise mitigation 有权
标题翻译：用于立体声噪声抑制的方法和系统
公开(公告)号：US08023918B2
公开(公告)日：2011-09-20
申请号：US12313044
申请日：2008-11-17
申请人： Steve W. Hanawalt , Dana Taipale
发明人： Steve W. Hanawalt , Dana Taipale
IPC分类号： H04B1/10
CPC分类号： H04B1/1676
摘要： Methods and systems are disclosed that mitigate stereo noise in FM broadcast receivers by assessing L−R (left-minus-right) and L+R (left-plus-right) levels within tuned FM channels. These assessments are used to facilitate control of a blend from stereo output signals to mono output signals in order to reduce and mitigate stereo noise and distortion in the audio outputs. The side effects of the disclosed systems and methods are unobtrusive as compared to prior blend-to-mono techniques.
摘要翻译：公开了通过评估FM调频通道内的L-R（左 - 右 - 右）和L + R（左 - 右 - 右）电平来减轻FM广播接收机中的立体噪声的方法和系统。这些评估用于促进从立体声输出信号到单声道输出信号的混合控制，以减少和减轻音频输出中的立体声噪声和失真。所公开的系统和方法的副作用与以前的混合到单声道技术相比是不显眼的。

3. 发明申请

US20090247101A1 Auto-detection of broadcast channel spacing 审中-公开
标题翻译：广播信道间隔自动检测
公开(公告)号：US20090247101A1
公开(公告)日：2009-10-01
申请号：US12286315
申请日：2008-09-30
申请人： Ligang Zhang , Steve W. Hanawalt , Greg Hodgson , Liang Wu
发明人： Ligang Zhang , Steve W. Hanawalt , Greg Hodgson , Liang Wu
IPC分类号： H04B1/18
CPC分类号： H03J1/0091
摘要： Methods and systems are disclosed for automatic detection of channel spacing for broadcast bands in different regions that use different channel spacing. Using the described embodiments, channel spacing at a users' current location can be automatically detected so that manual settings by the user are not necessary, especially when a user travels with his/her radio across regions that use different channel spacing for radio broadcasting bands. This auto-detected channel spacing can then be used for later channel searching by the radio. More particularly, methods and systems are disclosed for auto-detection of channel spacing for AM broadcasts using different channel spacings, such as the standard 9 kHz and 10 kHz spacings, used today in different geographic regions of the world for AM broadcast bands.
摘要翻译：公开了用于自动检测使用不同信道间隔的不同区域中的广播频带的信道间隔的方法和系统。使用所描述的实施例，可以自动检测用户当前位置处的信道间隔，使得不需要用户的手动设置，特别是当用户使用他/她的无线电横跨用于无线电广播频带的不同信道间隔的区域行进时。然后，该自动检测的信道间隔可用于随后的无线电信道搜索。更具体地，公开了用于使用当今在AM广播频带的世界不同地理区域中使用的不同信道间隔（例如标准9kHz和10kHz间隔）的AM广播的信道间隔的自动检测的方法和系统。

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