公开(公告)号：US20070152750A1

公开(公告)日：2007-07-05

申请号：US11324132

申请日：2005-12-30

申请人： Jack Andersen ,  Peter Craven ,  Michael Kost ,  Daniel Chieng ,  Larry Hand ,  Wilson Taylor

发明人： Jack Andersen ,  Peter Craven ,  Michael Kost ,  Daniel Chieng ,  Larry Hand ,  Wilson Taylor

IPC分类号： H03G3/20

CPC分类号： H03F3/217 ,  H03F1/32 ,  H03F2200/331

摘要： Systems and methods for performance improvements in digital switching amplifiers using simulation-based feedback. In one embodiment, a digital pulse width modulation (PWM) amplifier includes a signal processing plant configured to receive and process an input audio signal. The amplifier also includes a simulator configured to model processing of audio signals by the plant. The outputs of the plant and the simulator are provided to a subtractor, the output of which is then added to the input audio signal as feedback. The plant may consist of a modulator and power switch, a noise shaper, or any other type of plant. An analog-to-digital converter (ADC) may be provided to convert the output audio signal to a digital signal for input to the subtractor. Filtering may be implemented before or after the ADC, and a decimator may be placed after the ADC if it is an oversampling ADC.

摘要翻译： 使用基于仿真的反馈数字开关放大器性能改进的系统和方法。 在一个实施例中，数字脉宽调制（PWM）放大器包括被配置为接收和处理输入音频信号的信号处理设备。 该放大器还包括一个模拟器，被配置为模拟工厂对音频信号的处理。 工厂和模拟器的输出被提供给减法器，然后将其输出作为反馈加到输入音频信号上。 该设备可以由调制器和电源开关，噪声整形器或任何其它类型的设备组成。 可以提供模数转换器（ADC）以将输出音频信号转换为数字信号以输入到减法器。 可以在ADC之前或之后实现滤波，如果ADC是过采样ADC，则可以在ADC之后放置抽取器。

公开(公告)号：US20070182486A1

公开(公告)日：2007-08-09

申请号：US11340139

申请日：2006-01-26

申请人： Daniel Chieng ,  Michael Kost ,  Jack Andersen ,  Larry Hand

发明人： Daniel Chieng ,  Michael Kost ,  Jack Andersen ,  Larry Hand

IPC分类号： H03F1/52

CPC分类号： H03F1/52 ,  H03F3/2173

摘要： Systems and methods for over-current protection in all-digital amplifiers using low-cost current sensing mechanisms. An over-current hard clipping unit receives a digital audio signal, clips the signal according to a clip level, and provides the signal to a modulator. The modulator modulates the signal to produce, e.g., a PWM signal and provides the modulated signal to an output stage which generates an output current to drive a speaker. An over-current sensing unit is compares the output current to a threshold value and generates a binary signal indicating whether the output current exceeds the threshold value. The hard clipping unit receives the binary signal and ramps down the clip level during time periods in which the binary signal indicates that the output current exceeds the threshold. When the binary signal indicates that the output current does not exceed the threshold value, the hard clipping unit ramps up the clip level.

公开(公告)号：US20070057720A1

公开(公告)日：2007-03-15

申请号：US11211765

申请日：2005-08-25

申请人： Larry Hand ,  Wilson Taylor

发明人： Larry Hand ,  Wilson Taylor

IPC分类号： H03F3/38

CPC分类号： H03F3/2173 ,  H03F1/523 ,  H03F3/2175 ,  H03F2200/331 ,  H03F2200/426

摘要： Systems and methods for detecting the impedance of an output load coupled to a digital amplifier and compensating for changes in the response of the amplifier. One embodiment of the invention is implemented in a Class D pulse width modulated (PWM) amplifier. In this embodiment, a digital PCM test signal is generated. This test signal is processed by the amplifier to produce a corresponding analog audio output signal that is used to drive a speaker. A sense resistor placed in series with the speaker is used to generate a test voltage that is compared to a reference voltage. When the test voltage reaches the reference voltage, the current through the sense resistor (hence the speaker) is at a known level, so the value of the digital test signal is noted. The impedance of the speaker is then determined from the test signal value and the speaker current.

公开(公告)号：US09526258B2

公开(公告)日：2016-12-27

申请号：US13180206

申请日：2011-07-11

申请人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

发明人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

IPC分类号： A23B4/01 ,  A22C11/00 ,  A23B4/03 ,  A23L3/01

摘要： A process for manufacturing dry sausage. The process includes preparing a dry sausage meat mixture, stuffing the mixture into a casing or mold, fermenting the mixture, heat treating the mixture, cooling the mixture to a temperature sufficiently low to permit slicing, slicing the sausage, placing the sausage onto a conveyor, and passing the conveyor and sausage through a chamber. The process also includes introducing a supply of conditioned air into the chamber, the air having a relative humidity below about 60% and a temperature in the range of at least about 40° F. to 130° F., and introducing a supply of microwaves into the chamber. The air supply and microwaves are selected to reduce the moisture content of the meat to a predetermined moisture to protein ratio.

公开(公告)号：US09713335B2

公开(公告)日：2017-07-25

申请号：US13180206

申请日：2011-07-11

申请人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

发明人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

IPC分类号： A23B4/01 ,  A22C11/00 ,  A23B4/03 ,  A23L3/01

CPC分类号： A22C11/00 ,  A22C5/00 ,  A22C11/008 ,  A22C17/0026 ,  A22C17/0033 ,  A22C17/0073 ,  A23B4/01 ,  A23B4/03 ,  A23L3/01 ,  A23V2002/00

摘要： A process for manufacturing dry sausage. The process includes preparing a dry sausage meat mixture, stuffing the mixture into a casing or mold, fermenting the mixture, heat treating the mixture, cooling the mixture to a temperature sufficiently low to permit slicing, slicing the sausage, placing the sausage onto a conveyor, and passing the conveyor and sausage through a chamber. The process also includes introducing a supply of conditioned air into the chamber, the air having a relative humidity below about 60% and a temperature in the range of at least about 40° F. to 130° F., and introducing a supply of microwaves into the chamber. The air supply and microwaves are selected to reduce the moisture content of the meat to a predetermined moisture to protein ratio.

公开(公告)号：US20120282372A1

公开(公告)日：2012-11-08

申请号：US13180206

申请日：2011-07-11

申请人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

发明人： James Roberds ,  Larry Hand ,  Dave Taylor ,  Paul Kafer ,  Dan Glowski

IPC分类号： A23B4/01

CPC分类号： A22C11/00 ,  A22C5/00 ,  A22C11/008 ,  A22C17/0026 ,  A22C17/0033 ,  A22C17/0073 ,  A23B4/01 ,  A23B4/03 ,  A23L3/01 ,  A23V2002/00

摘要： A process for manufacturing dry sausage. The process includes preparing a dry sausage meat mixture, stuffing the mixture into a casing or mould, fermenting the mixture, heat treating the mixture, cooling the mixture to a temperature sufficiently low to permit slicing, slicing the sausage, placing the sausage onto a conveyor, and passing the conveyor and sausage through a chamber. The process also includes introducing a supply of conditioned air into the chamber, the air having a relative humidity below about 60% and a temperature in the range of at least about 40° F. to 130° F., and introducing a supply of microwaves into the chamber. The air supply and microwaves are selected to reduce the moisture content of the meat to a predetermined moisture to protein ratio.

摘要翻译： 制造干肠的方法。 该方法包括制备干香肠肉混合物，将混合物填充到套管或模具中，发酵混合物，对混合物进行热处理，将混合物冷却至足够低的温度以允许切片，切片香肠，将香肠置于输送机上 ，并将输送机和香肠通过一个室。 该方法还包括向室中引入调节空气的供应，空气的相对湿度低于约60％，温度在至少约40°F至130°F的范围内，并引入微波炉 进入房间 选择供气和微波来将肉的水分含量降低至预定的水分与蛋白质的比率。