公开(公告)号：US20070104338A1

公开(公告)日：2007-05-10

申请号：US10553096

申请日：2004-03-19

申请人： Stephen Privett

发明人： Stephen Privett

IPC分类号： H03F21/00 ,  H04R3/00

CPC分类号： H03F3/68 ,  H03F1/02 ,  H03F1/30 ,  H03F3/217 ,  H03F2200/03 ,  H03F2200/541

摘要： The invention relates to a distributed audio system, and an amplifier arrangement therefor, which is configured so that the remotely powered switching amplifier and power supply arrangement reduces heat dissipation and increase the efficiency when powered over, particularly but not exclusively, small gauge structured wiring cables.

摘要翻译： 本发明涉及一种分布式音频系统及其放大器装置，其被配置为使得远程供电的开关放大器和电源装置降低散热并提高上电时的效率，特别地但不排他地，小规格结构化布线电缆 。

公开(公告)号：US07194097B2

公开(公告)日：2007-03-20

申请号：US10441045

申请日：2003-05-20

申请人： Chu-Ting Su ,  Yi-Shu Chang ,  Jul-Cheng Huang ,  Wen-Chi Wang

发明人： Chu-Ting Su ,  Yi-Shu Chang ,  Jul-Cheng Huang ,  Wen-Chi Wang

IPC分类号： H03F21/00

CPC分类号： H03F3/68 ,  Y10T307/696

摘要： An Audio Codec which comprises a power selecting circuit an audio compiler circuit and a control amplifier circuit. The power selecting circuit receives at least a primary power source and an auxiliary power source and outputs a working power selected from the power sources. The auxiliary power source is selected and output to the control amplifier circuit only when the computer is at a power-off status. When the computer is power-on, the primary power source will be selected and output to both the audio compiler circuit and the control amplifier circuit. Therefore, the Audio Codec of the present invention only needs one set of internally furnished control amplifier circuit to both operate on the normal power-on status and perform the Power OFF CD function.

摘要翻译： 音频编解码器，其包括音频编译器电路和控制放大器电路的功率选择电路。 功率选择电路至少接收主电源和辅助电源，并输出从电源选择的工作电源。 只有当计算机处于断电状态时，辅助电源被选择并输出到控制放大器电路。 当计算机上电时，主电源将被选择并输出到音频编译器电路和控制放大器电路。 因此，本发明的音频编解码器仅需要一套内部布置的控制放大器电路，以在正常的开机状态下操作并执行断电CD功能。

公开(公告)号：US07123730B2

公开(公告)日：2006-10-17

申请号：US10041673

申请日：2002-01-10

申请人： Masao Gibo ,  Won-suk Son

发明人： Masao Gibo ,  Won-suk Son

IPC分类号： H03F21/00

CPC分类号： H03F1/0244

摘要： An audio power amplifying apparatus includes first through B-th power amplifying terminals, each of which power-amplifies an input alternating current (AC) audio input signal input and outputs the power amplified result as an audio output signal. A preamplifier of a b-th amplifying terminal divides the audio input signal into positive and negative portions to preamplify the positive and negative portions. A power supply supplies first through M-th positive and negative voltages having different levels. A power amplifier selects a positive supply voltage having a level proportional to a level of the preamplified positive portion and a negative supply voltage having a level proportional to a level of the preamplified negative portion and again amplifies the preamplified positive and negative portions using the selected positive and negative supply voltages to be combined by a signal synthesizer as the audio output signal.

摘要翻译： 音频功率放大装置包括第一至第B功率放大端子，每个功率放大端子对输入的交流（AC）音频输入信号进行功率放大，并输出功率放大结果作为音频输出信号。 第b放大端子的前置放大器将音频输入信号分为正和负部分，以对正和负部分进行预放大。 电源首先提供具有不同电平的第M个正和负电压。 功率放大器选择具有与前置放大正极部分的电平成比例的电平的正电源电压和具有与前置放大负极部分的电平成比例的电平的负电源电压，并且使用选择的正值再次放大前置放大的正和负部分 和由信号合成器组合的负电源电压作为音频输出信号。

公开(公告)号：US07123729B2

公开(公告)日：2006-10-17

申请号：US09973264

申请日：2001-10-09

申请人： Gene Karl Sendelweck

发明人： Gene Karl Sendelweck

IPC分类号： H03G3/00 ,  H03F21/00 ,  H02B1/00 ,  G06F1/08 ,  G05F1/10

CPC分类号： H03K19/1732 ,  H01L2924/0002 ,  H03G1/007 ,  H01L2924/00

摘要： In a signal processing system with an IC having an intrinsic signal provided at a pin of the IC, a first operational function (de-emphasis) for the signal is provided at the pin, and further along in the signal flow path, a second operational function (variable attenuation) for the signal is provided within the IC. An extrinsic signal is switchably coupled to the pin so that the second operational function can be used to operate on the extrinsic signal. The second signal is coupled to the pin at a low source impedance so that when the second signal is switched to be operational, the first operational function is defeated, and the first signal is severely attenuated. When the circuit is switched to not couple the second signal to the pin, the coupling path for the second signal and the low source impedance are both removed, thus restoring the first operational function and the first signal at the pin of the IC.

公开(公告)号：US07106135B2

公开(公告)日：2006-09-12

申请号：US10927351

申请日：2004-08-26

申请人： Jun Makino ,  Boon Ghee Ting

发明人： Jun Makino ,  Boon Ghee Ting

IPC分类号： H03F3/45 ,  H03F21/00

CPC分类号： H03F1/025 ,  H03F3/211 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/432 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2200/78

摘要： An amplifier system comprises an amplifier, a comparator connectable to the amplifier to compare an incoming signal with a number of reference potentials. A switching stage is controlled by the output of the comparator and arranged to select a voltage level to be applied to one side of a load, such as a loudspeaker system. A subtractor is included to subtract from the incoming signal a percentage of the selected voltage level to be applied to the load. The amplifier receives the output signal of the subtractor, amplifies that signal and applies it to a second side of the load. There is also disclosed a method for amplifying a signal.

公开(公告)号：US07085389B1

公开(公告)日：2006-08-01

申请号：US10677160

申请日：2003-09-30

申请人： Richard T. Modafferi

发明人： Richard T. Modafferi

IPC分类号： H03G3/00 ,  H03F21/00

CPC分类号： H04R3/14

摘要： An improvement to inventor's prior art loudspeaker crossover filter invention is described. A substantially flat network input-impedance characteristic across the audible frequency range is provided by the addition of at least one series connected constant resistance network at the input terminals of the crossover filter system. By relaxing certain infinite slope filter parameters, more uniform acoustic polar response of the loudspeaker system is obtained. Specifically, infinite slope methods are used for the upper (higher frequency) band-edge of low-pass and band-pass filters, and optionally, for high-pass filters. Infinite slope characteristics, however, are relaxed for the lower frequency slope of band-pass filters and, optionally, for high-pass filters. In addition, the crossover network uses fewer components than infinite slope crossovers of the prior art.

摘要翻译： 描述了发明人的现有技术的扬声器交叉滤波器发明的改进。 通过在交叉滤波器系统的输入端处添加至少一个串联连接的恒定电阻网络来提供可听频率范围内的基本平坦的网络输入阻抗特性。 通过放松某些无限斜率滤波器参数，获得了更均匀的扬声器系统的声极化响应。 具体来说，无穷大的斜率方法用于低通和带通滤波器的上（较高频）带边缘，并且可选地用于高通滤波器。 然而，对于带通滤波器的较低频率斜率，并且可选地，对于高通滤波器，无限斜率特性被放宽。 此外，交叉网络使用比现有技术的无限斜率分频更少的分量。

公开(公告)号：US20060133625A1

公开(公告)日：2006-06-22

申请号：US11018010

申请日：2004-12-20

申请人： Charles Adams ,  Dale Curtis ,  Jerry Hubbard ,  Eric Miller

发明人： Charles Adams ,  Dale Curtis ,  Jerry Hubbard ,  Eric Miller

IPC分类号： H03F21/00 ,  H04R1/02

CPC分类号： H04R1/02 ,  H04R1/06 ,  H04R2420/03

摘要： An audio amplifier and speaker system are stacked and magnetically coupled together. The audio amplifier is coupled for receiving an audio signal. A first securing assembly is provided on a bottom surface of the amplifier. The first securing assembly may be a foot formed on the bottom surface of the audio amplifier. The speaker is electrically coupled to the amplifier. A second securing assembly is provided on a top surface of the speaker. The second securing assembly may be a receptacle formed in top surface of the speaker. The foot is inserted into the receptacle. The foot and receptacle are magnetically coupled to attach the amplifier to the speaker. The foot has a first electrical connector, and the receptacle has a second electrical connector mated to the first electrical connector to route the audio signal from the amplifier to the speaker.

摘要翻译： 音频放大器和扬声器系统被堆叠并磁耦合在一起。 音频放大器被耦合用于接收音频信号。 第一固定组件设置在放大器的底表面上。 第一固定组件可以是形成在音频放大器的底表面上的脚。 扬声器电耦合到放大器。 第二固定组件设置在扬声器的顶表面上。 第二固定组件可以是形成在扬声器的顶表面中的插座。 脚插入插座。 脚和插座磁耦合以将放大器连接到扬声器。 脚具有第一电连接器，并且插座具有与第一电连接器配合的第二电连接器以将音频信号从放大器路由到扬声器。

公开(公告)号：US07043033B1

公开(公告)日：2006-05-09

申请号：US10098227

申请日：2002-03-15

申请人： Zabih Toosky

发明人： Zabih Toosky

IPC分类号： H03F21/00

CPC分类号： H03F3/68 ,  H03F1/52 ,  H03F3/72

摘要： An audio amplifier system includes two amplifiers that are configured to drive loads through either DC or AC coupling. A third amplifier provides an AC ground return when the system is configured in the DC coupled mode, and is disabled when the system is configured in the AC coupled mode. A bypass circuit charges a bypass capacitor to provide a reference voltage level for the amplifiers. A mode detection circuit monitors the reference voltage level and the output of the third amplifier to determine the current operating mode. The third amplifier is disabled when the reference voltage exceeds the output of the third amplifier or when a shutdown condition is activated, such that the third amplifier is protected from short circuit conditions. The charge and discharge times of the bypass capacitor relate to the detected operating mode minimize click and pop in the amplified signals.

摘要翻译： 音频放大器系统包括两个放大器，其配置为通过直流或交流耦合来驱动负载。 当系统配置为直流耦合模式时，第三个放大器提供交流接地返回，当系统配置为交流耦合模式时，第三个放大器被禁用。 旁路电路为旁路电容充电，为放大器提供参考电压电平。 模式检测电路监视参考电压电平和第三放大器的输出以确定当前操作模式。 当参考电压超过第三放大器的输出或关闭条件被激活时，第三放大器被禁止，使得第三放大器受到短路条件的保护。 旁路电容器的充放电时间与检测到的工作模式有关，使得放大信号中的点击和点击最小化。

公开(公告)号：US20060050901A1

公开(公告)日：2006-03-09

申请号：US10540070

申请日：2004-01-09

申请人： Arthur Cohen ,  John Glissman

发明人： Arthur Cohen ,  John Glissman

IPC分类号： H03F21/00 ,  G10H1/00

CPC分类号： H03F1/02 ,  G10H2240/211 ,  H03F1/305 ,  H03F3/181 ,  H04B1/04

摘要： A circuit and method of providing an auto-on and/or auto-off capability for an audio device, of a type having an audio plug which mates with the output jack of an audio source. The portable transmitter modulates audio signals from the audio source onto a carrier and transmits them to a receiver. The auto-on and auto-off capability is provided to prolong battery life and degradation of the transmitter circuit and comprises pinching off a FET when the circuit is in an “off” state. This occurs when a pre-determined threshold in a capacitor is reached by not discharging that capacitor. The capacitor is discharged by dropping a comparator input below a pre-determined threshold limit when presented with an audio peak and wherein the drop in value causes the comparator output to go low, causing the capacitor to discharge and causing the FET to supply power to the regulator.

摘要翻译： 一种为音频设备提供自动启动和/或自动关闭功能的电路和方法，其具有与音频源的输出插孔相配合的音频插头的类型。 便携式发射机将来自音频源的音频信号调制到载波上并将其发送到接收机。 提供自动启动和自动关闭功能，以延长电池寿命和发射机电路的劣化，并且包括当电路处于“关闭”状态时夹紧FET。 当通过不释放该电容器来达到电容器中的预定阈值时，会发生这种情况。 当呈现音频峰值时，通过将比较器输入降低到预定阈值极限以下来使电容器放电，并且其中该下降值使比较器输出变低，使得电容器放电并且使FET向 调节器

公开(公告)号：US6028945A

公开(公告)日：2000-02-22

申请号：US851329

申请日：1997-05-05

申请人： Charles H. Gayle

发明人： Charles H. Gayle

IPC分类号： H05K7/14 ,  H03F21/00

CPC分类号： H05K7/1427

摘要： An interchangeable amplifier device includes an amplifier cabinet. The amplifier cabinet has a bottom side, a top side and enclosing side walls for housing the amplifier electronics. The enclosing side walls have a front wall and a back wall. The front wall of the cabinet has a volume control and a power switch. The back wall of the amplifier cabinet has an audio port and an AC power supply cord. The audio port has a plurality of speaker terminals and a plurality of input jacks for receiving audio input for transmission to the stereo speakers. An upgradable power board with at least four flat leads may be plugged into an upgrade slot connector found along the back wall of the amplifier cabinet. The upgradable power board receives a first voltage of input from a transformer when plugged into the upgrade slot connector. The upgradable power board, when plugged in, will resupplying the amplifier with a second voltage of a magnitude greater than the magnitude of the first voltage. Further provided is a sliding bracket assembly to which the upgrade slot connector is coupled. The sliding bracket assembly has a first orientation with the upgrade slot connector situated adjacent a plurality of openings formed in the cabinet for allowing access thereto and a second orientation with the upgrade slot connector positioned distant the openings adjacent the front wall of the cabinet for storing the upgradable power board entirely within the cabinet.

摘要翻译： 可互换的放大器装置包括放大器柜。 放大器柜具有底侧，顶侧和封闭的侧壁，用于容纳放大器电子设备。 封闭的侧壁具有前壁和后壁。 机柜的前壁具有音量控制和电源开关。 放大器机柜的后壁有一个音频端口和一个交流电源线。 音频端口具有多个扬声器端子和用于接收音频输入以传输到立体声扬声器的多个输入插孔。 具有至少四个扁平引线的可升级电源板可以插入沿着放大器机柜的后壁发现的升级插槽连接器。 可升级的电源板在插入升级插槽连接器时，从变压器接收第一个输入电压。 可升级的电源板在插入时将以大于第一电压的幅度的第二电压对放大器供电。 进一步提供了一种滑动支架组件，升降槽连接器连接到该支架组件。 滑动支架组件具有第一定向，其中升级槽连接器位于形成在机柜中的多个开口附近，用于允许进入其中，并且第二定位与升级槽连接器位于远离柜的前壁的开口处，用于存储 可升级电源板完全在柜内。