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1. 发明申请

US20070281648A1 METHOD FOR CONTROLLING AUDIO SIGNALS TO AN FM TRANSMITTER AND A LOUDSPEAKER OF A HANDS-FREE ADAPTER 有权
标题翻译：用于控制音频信号到FM发射机的方法和无手机适配器的扬声器
公开(公告)号：US20070281648A1
公开(公告)日：2007-12-06
申请号：US11421837
申请日：2006-06-02
申请人： Daniel S. Rokusek , Sang Y. Oh , David A. Vanyek , Kevin L. Weirich
发明人： Daniel S. Rokusek , Sang Y. Oh , David A. Vanyek , Kevin L. Weirich
IPC分类号： H04B1/16
CPC分类号： H04M1/6041 , H04M1/6091
摘要： A method (200) for controlling audio signals to an FM transmitter and a loudspeaker of a hands-free adapter first sends a first audio signal to the loudspeaker (242) and measures and records a loudspeaker audible artifact such as echo return loss (244) and/or echo tail length (246). Next, the hands-free adapter sends a second audio signal to the FM transmitter and the loudspeaker (252) and measures and records an FM transmitter and loudspeaker audible artifact such as echo return loss (254) and/or echo tail length (256). If the FM transmitter and loudspeaker audible artifact minus the loudspeaker audible artifact is greater than a threshold (263, 266), the hands-free adapter sends a third audio signal to the FM transmitter only (270), and if the FM transmitter and loudspeaker audible artifact minus the loudspeaker audible artifact is not greater than the threshold, the hands-free adapter sends the third audio signal to both the FM transmitter and the loudspeaker (280).
摘要翻译：一种用于控制FM发射机和免提适配器的扬声器的音频信号的方法（200）首先向扬声器（242）发送第一音频信号，并测量和记录扬声器可听见的伪影，例如回波损耗（244）和/或回波尾长度（246）。接下来，免提适配器向FM发射器和扬声器（252）发送第二音频信号，并测量并记录FM发射器和扬声器诸如回波返回损耗（254）和/或回波尾长度（256）的可听见的伪影，。如果FM发射器和扬声器的声音伪影减去扬声器的声音伪像大于阈值（263,266），则免提适配器仅向FM发射器发送第三音频信号（270），如果FM发射器和扬声器可听见的人造物减去扬声器的声音伪影不大于阈值，免提适配器将第三音频信号发送到FM发射机和扬声器（280）。

2. 发明授权

US07986928B2 Method and apparatus for selecting a radio channel for transmitting an audio signal to a radio local receiver 有权
标题翻译：用于选择用于将音频信号发送到无线电本地接收机的无线电信道的方法和装置
公开(公告)号：US07986928B2
公开(公告)日：2011-07-26
申请号：US11952497
申请日：2007-12-07
申请人： Daniel S. Rokusek , Gary L. Christopher , Peter A. Kindinger , David A. Vanyek , Kevin L. Weirich
发明人： Daniel S. Rokusek , Gary L. Christopher , Peter A. Kindinger , David A. Vanyek , Kevin L. Weirich
IPC分类号： H04B1/18
CPC分类号： H04B1/034
摘要： A transmitter device (100) receives an audio signal from an audio source device (112), and transmits the audio signal at a low power over a commercial broadcast channel to a local receiver (120). The transmitter device selects an initial channel by scanning the available spectrum, partitioned into sub-bands (210-206), and measuring the received signal strength in each channel. The channel having the lowest strength is used to set a threshold. The sub-band with most channels meeting the threshold is initially selected, and the channel in the initially selected sub-band with the lowest received signal strength is selected for initial use. A context-based weighting factor may be applied in selecting the initial channel or in selecting subsequent channels when the initial channel conditions degrade.
摘要翻译：发射机设备（100）从音频源设备（112）接收音频信号，并且通过商业广播频道将低功率的音频信号发送到本地接收机（120）。发射机设备通过扫描分为子频带（210-206）的可用频谱，并测量每个频道中的接收信号强度来选择初始信道。具有最低强度的通道用于设定阈值。最初选择具有满足阈值的大多数信道的子带，并且选择具有最低接收信号强度的最初选择的子带中的信道用于初始使用。当初始信道条件降级时，可以应用基于上下文的加权因子来选择初始信道或选择随后的信道。

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