公开(公告)号：US08351843B2

公开(公告)日：2013-01-08

申请号：US11896565

申请日：2007-09-04

申请人： Robert Michael Dillon ,  Harvey Chalmers ,  Thomas Joseph O'Brien ,  Gregory Nungester ,  Rodney Bernard Burke ,  Joseph F. D'Angelo

发明人： Robert Michael Dillon ,  Harvey Chalmers ,  Thomas Joseph O'Brien ,  Gregory Nungester ,  Rodney Bernard Burke ,  Joseph F. D'Angelo

IPC分类号： H04H20/71

CPC分类号： H04H20/71 ,  H04H20/28 ,  H04H20/93 ,  H04H60/27 ,  H04H60/33 ,  H04H60/74 ,  H04H60/82 ,  H04H2201/18

摘要： A method for specifying content of interest using a digital radio broadcast receiver is described. A digital radio broadcast signal includes first audio content and first program data, wherein the first program data includes information identifying a first item, and includes second audio content and second program data, wherein the second program data includes information identifying a second item. A user command entered at a user interface during reception of audio content is registered, indicating a user's interest in either the first or second audio content. It is determined whether there is an ambiguity in the content of interest. If there is an ambiguity, a first data structure is stored for the first audio content, and a second data structure is stored for the second audio content. The first data structure includes the information identifying the first item, and the second data structure includes the information identifying the second item.

公开(公告)号：US06107876A

公开(公告)日：2000-08-22

申请号：US291168

申请日：1999-04-13

申请人： Thomas Joseph O'Brien

发明人： Thomas Joseph O'Brien

IPC分类号： H03F3/217 ,  H03F3/38

CPC分类号： H03F3/217

摘要： A digital input switching audio power amplifier uses a simple logic circuit and/or software program for signal processing and, therefore, does not require an expensive DSP processor. The invention provides an approach that allows the integration of power level meters and volume controls in the logic circuit. In one embodiment of the invention, the amplifier accepts multiple inputs, an active one of which may be digitally selected. The invention uses this novel approach to signal processing to achieve high performance. The invention also provides lower system cost as a result of the higher levels of system integration provided by the logic circuit. Increased system versatility results from a modular design which allows the production of an amplifier having optimum cost-to-performance ratios. The amplifier is implemented in ASIC and FPGA circuitry, such that a designer using the invention is provided with flexibility in choosing the various operating parameters of the amplifier, e.g. the amplifier is capable of operating at various power levels and of implementing various output stage topologies.

摘要翻译： 数字输入开关音频功率放大器使用简单的逻辑电路和/或软件程序进行信号处理，因此不需要昂贵的DSP处理器。 本发明提供了一种允许在逻辑电路中集成功率电平表和音量控制的方法。 在本发明的一个实施例中，放大器接受多个输入，其中有效的一个可以被数字地选择。 本发明采用这种新颖的信号处理方法来实现高性能。 由于由逻辑电路提供的更高级别的系统集成，本发明还提供较低的系统成本。 增加的系统通用性来自模块化设计，允许生产具有最佳性价比的放大器。 放大器在ASIC和FPGA电路中实现，使得使用本发明的设计者在选择放大器的各种操作参数时具有灵活性，例如， 该放大器能够以各种功率水平运行并实现各种输出级拓扑。

公开(公告)号：US20090061763A1

公开(公告)日：2009-03-05

申请号：US11896565

申请日：2007-09-04

申请人： Robert Michael Dillon ,  Harvey Chalmers ,  Thomas Joseph O'Brien ,  Gregory Nungester ,  Rodney Bernard Burke ,  Joseph F. D'Angelo

发明人： Robert Michael Dillon ,  Harvey Chalmers ,  Thomas Joseph O'Brien ,  Gregory Nungester ,  Rodney Bernard Burke ,  Joseph F. D'Angelo

IPC分类号： H04H20/00

CPC分类号： H04H20/71 ,  H04H20/28 ,  H04H20/93 ,  H04H60/27 ,  H04H60/33 ,  H04H60/74 ,  H04H60/82 ,  H04H2201/18

摘要： A method for specifying content of interest using a digital radio broadcast receiver is described. A digital radio broadcast signal includes first audio content and first program data, wherein the first program data includes information identifying a first item, and includes second audio content and second program data, wherein the second program data includes information identifying a second item. A user command entered at a user interface during reception of audio content is registered, indicating a user's interest in either the first or second audio content. It is determined whether there is an ambiguity in the content of interest. If there is an ambiguity, a first data structure is stored for the first audio content, and a second data structure is stored for the second audio content. The first data structure includes the information identifying the first item, and the second data structure includes the information identifying the second item.

摘要翻译： 描述使用数字无线电广播接收机来指定感兴趣内容的方法。 数字无线电广播信号包括第一音频内容和第一节目数据，其中第一节目数据包括识别第一项目的信息，并且包括第二音频内容和第二节目数据，其中第二节目数据包括识别第二项目的信息。 在接收音频内容期间在用户界面处输入的用户命令被登记，指示用户对第一或第二音频内容的兴趣。 确定感兴趣的内容是否存在歧义。 如果存在歧义，则存储第一音频内容的第一数据结构，并存储第二音频内容的第二数据结构。 第一数据结构包括识别第一项目的信息，第二数据结构包括识别第二项目的信息。

公开(公告)号：US06429737B1

公开(公告)日：2002-08-06

申请号：US09611231

申请日：2000-07-06

申请人： Thomas Joseph O'Brien

发明人： Thomas Joseph O'Brien

IPC分类号： H03F338

CPC分类号： H03F3/68 ,  H03F3/2178 ,  H03F2200/351 ,  H03K7/08

摘要： The invention provides a method and apparatus for the modulation of more than one channel of audio in a digital amplification system. In the preferred embodiment of the invention, pulse width modulator outputs are staggered in time such that at idle only one channel switches states at a time. This is done to provide an even draw from the power supply, assuming that the same supply is used for the multiple channels. For example, in a two channel system, the idle state of the pulse width modulator for the first channel is 90 degrees out of phase with the pulse width modulator output of the second channel.

摘要翻译： 本发明提供一种用于在数字放大系统中调制多于一声道的音频的方法和装置。 在本发明的优选实施例中，脉冲宽度调制器输出在时间上交错，使得在空闲时，一个通道一次切换状态。 这样做是为了从电源提供均匀的电压，假设相同的电源用于多个通道。 例如，在双通道系统中，第一通道的脉宽调制器的空闲状态与第二通道的脉宽调制器输出相差90度。