公开(公告)号：US09204211B2

公开(公告)日：2015-12-01

申请号：US13419222

申请日：2012-03-13

申请人： Robert C. Proebstel ,  Patrick A. Quinn ,  Manpreet S. Kharia ,  Thomas Irrgang ,  Nigel D. Waites ,  Ian J. Myles

发明人： Robert C. Proebstel ,  Patrick A. Quinn ,  Manpreet S. Kharia ,  Thomas Irrgang ,  Nigel D. Waites ,  Ian J. Myles

IPC分类号： H04R1/02 ,  H05K5/00 ,  H04R1/28 ,  H04R3/00 ,  H04R29/00

CPC分类号： H04R1/20 ,  G06F1/1628 ,  G06F1/1632 ,  G06F2200/1633 ,  G06F2200/1634 ,  H04R1/026 ,  H04R1/28 ,  H04R1/2803 ,  H04R3/005 ,  H04R29/00 ,  H04R2205/021 ,  H04R2225/33 ,  H04R2400/03 ,  H04R2420/07

摘要： A soundskin for a pad-type device comprises a housing, at least one microphone, a signal processing device, at least one audio transducer, and an acoustic waveguide. The housing receives a pad-type device. The signal processing device receives a signal from a pad-type device when the pad-type device is received by the housing. The signal processing device provides a directive sound enhancement of the audio input signals based on room acoustics, such as reverberation, echo, noise, delay, frequency response, and/or speaker-positional information that is determined by the signal processing device. The audio transducer device generates an audible audio output in response to an audio signal output from the signal processing device. The acoustic waveguide receives the audible audio output and generates an enhanced bass audio output from the acoustic waveguide.

摘要翻译： 用于垫式装置的声音包括壳体，至少一个麦克风，信号处理装置，至少一个音频换能器和声波导。 壳体接收垫式装置。 信号处理装置在由壳体接收到垫型装置时从垫型装置接收信号。 信号处理装置基于由信号处理装置确定的诸如混响，回波，噪声，延迟，频率响应和/或扬声器位置信息的房间声学来提供音频输入信号的指令声音增强。 音频换能器装置响应于从信号处理装置输出的音频信号产生可听音频输出。 声波导接收可听音频输出，并从声波导产生增强的低音音频输出。

公开(公告)号：US08207788B2

公开(公告)日：2012-06-26

申请号：US12082081

申请日：2008-04-07

申请人： Wai L. Lee ,  Patrick A. Quinn ,  Garry N. Link ,  Adam C. Broun ,  Eric T. King

发明人： Wai L. Lee ,  Patrick A. Quinn ,  Garry N. Link ,  Adam C. Broun ,  Eric T. King

IPC分类号： H03F3/217

CPC分类号： H03F1/301 ,  H03F1/342 ,  H03F3/2173

摘要： A differential feedback amplifier is provided with a feedback network wherein that feedback network is adjustable so as to improve the PSRR of the amplifier. In another aspect of the present invention, a differential feedback amplifier is provided with a feedback network wherein that feedback network is adjustable so as to improve the CMRR of the amplifier. In a further aspect of the present invention, a Class D amplifier is provided with a passive differential feedback, summing with an input current at a differential virtual ground produced by an amplifier which is a sub-section of the Class D amplifier.

摘要翻译： 差分反馈放大器设置有反馈网络，其中反馈网络是可调节的，以便改善放大器的PSRR。 在本发明的另一方面，差分反馈放大器设置有反馈网络，其中反馈网络是可调节的，以便改善放大器的CMRR。 在本发明的另一方面，D类放大器被提供有无源差分反馈，与由作为D类放大器的子部分的放大器产生的差分虚拟接地处的输入电流相加。

公开(公告)号：US20080272842A1

公开(公告)日：2008-11-06

申请号：US12082081

申请日：2008-04-07

申请人： Wai L. Lee ,  Patrick A. Quinn ,  Garry N. Link ,  Adam C. Broun ,  Eric T. King

发明人： Wai L. Lee ,  Patrick A. Quinn ,  Garry N. Link ,  Adam C. Broun ,  Eric T. King

IPC分类号： H03F3/217 ,  H03F3/45

CPC分类号： H03F1/301 ,  H03F1/342 ,  H03F3/2173

摘要： A differential feedback amplifier is provided with a feedback network wherein that feedback network is adjustable so as to improve the PSRR of the amplifier. In another aspect of the present invention, a differential feedback amplifier is provided with a feedback network wherein that feedback network is adjustable so as to improve the CMRR of the amplifier. In a further aspect of the present invention, a Class D amplifier is provided with a passive differential feedback, summing with an input current at a differential virtual ground produced by an amplifier which is a sub-section of the Class D amplifier.

摘要翻译： 差分反馈放大器设置有反馈网络，其中反馈网络是可调节的，以便改善放大器的PSRR。 在本发明的另一方面，差分反馈放大器设置有反馈网络，其中反馈网络是可调节的，以便改善放大器的CMRR。 在本发明的另一方面，D类放大器被提供有无源差分反馈，与由作为D类放大器的子部分的放大器产生的差分虚拟接地处的输入电流相加。

公开(公告)号：US4731588A

公开(公告)日：1988-03-15

申请号：US918412

申请日：1986-10-14

申请人： John L. Addis ,  Clifford E. Baker ,  Patrick A. Quinn

发明人： John L. Addis ,  Clifford E. Baker ,  Patrick A. Quinn

IPC分类号： H03F1/08 ,  H03F1/34 ,  H03F3/45 ,  H03G1/00 ,  H03G3/00 ,  H03G3/10

CPC分类号： H03G3/00 ,  H03G1/0088

摘要： A resonance compensated unity voltage gain amplifier comprises an input stage and an output stage connected in feedback to the input stage and a series resonance circuit for compensating for the resonance of the output and input stages created by the feedback. Reactance of the series resonance circuit is adjusted to be substantially zero at the resonant frequency of the amplifier. The resonance compensated amplifier is incorporated into a gain selectable amplifier. The resistance on the output stage of the amplifier across which the input voltage is applied via the output voltage may be selectively varied to change the current gain of the amplifier.

摘要翻译： 谐振补偿单位电压增益放大器包括输入级和连接到反馈到输入级的输出级和串联谐振电路，用于补偿由反馈产生的输出和输入级的谐振。 在放大器的谐振频率下，串联谐振电路的电抗被调整为基本为零。 谐振补偿放大器并入增益可选放大器。 通过输出电压施加输入电压的放大器的输出级上的电阻可以被选择性地改变，以改变放大器的电流增益。

公开(公告)号：US4692712A

公开(公告)日：1987-09-08

申请号：US917867

申请日：1986-10-14

申请人： Patrick A. Quinn

发明人： Patrick A. Quinn

IPC分类号： H03F1/14 ,  H03F1/32 ,  H03F3/26 ,  H03F3/45 ,  H03F1/26

CPC分类号： H03F1/3211 ,  H03F3/26 ,  H03F3/45071 ,  H03F2203/45176

摘要： An impedance neutralization circuit produces correction currents to compensate for the effects of parasitic impedance on the output voltage of an amplifier. In the described embodiment, the neutralization circuit includes a pair of emitter followers, one coupled to the collector of each transistor of a common base amplifier for sensing the output voltage at each collector. A pair of transistors are coupled one to each emitter follower for applying the sensed voltage across a neutralizing impedance proportional to the parasitic impedance seen at the collector of the opposite transistor of the common base amplifier. The voltage applied across the neutralizing impedances produces a correction current. The correction current is summed with a distortion current of proportional amount but opposite sign produced by the output voltage applied across the parasitic impedance to produce a substantially error-free output voltage.

摘要翻译： 阻抗中和电路产生校正电流以补偿寄生阻抗对放大器的输出电压的影响。 在所描述的实施例中，中和电路包括一对发射极跟随器，一对耦合到公共基极放大器的每个晶体管的集电极，用于感测每个集电极处的输出电压。 一对晶体管耦合到每个射极跟随器，用于将所感测的电压跨越与在公共基极放大器的相对晶体管的集电极处看到的寄生阻抗成比例的中和阻抗。 施加在中和阻抗上的电压产生校正电流。 校正电流与施加在寄生阻抗上的输出电压产生的成比例的失真电流相反，从而产生基本上无差错的输出电压。

公开(公告)号：US08228111B2

公开(公告)日：2012-07-24

申请号：US12154285

申请日：2008-05-20

申请人： Patrick A. Quinn

发明人： Patrick A. Quinn

IPC分类号： H03K17/56

CPC分类号： H03F3/2173 ,  H03F1/0211 ,  H03F1/523

摘要： A circuit architecture, or topology, that provides a level shifter substantially independent of the duty cycle of an input signal includes an H-bridge arrangement of field effect transistors, a pair of capacitively coupled input terminals connected to the gates of the high-side transistors and circuitry to set the bias voltage at the gates of the high-side transistors, wherein the bias voltage generation circuitry receives at least information indicative of both the H-bridge power supply voltage and the modulation of the input signal. Various embodiments include a switchable element coupled in series with a voltage divider portion in the bias voltage generation circuitry. The ratio of on to off time of the switchable element determines the average current through the voltage divider and thus the bias voltage. To prevent excessive short-circuit current flow through the high-side transistors, the switchable elements are turned off responsive to detection of a short-circuit condition.

摘要翻译： 提供基本上独立于输入信号的占空比的电平移位器的电路架构或拓扑结构包括场效应晶体管的H桥布置，连接到高侧晶体管的栅极的一对电容耦合输入端 以及用于在高侧晶体管的栅极处设置偏置电压的电路，其中偏置电压产生电路至少接收表示H桥电源电压和输入信号的调制的信息。 各种实施例包括与偏置电压产生电路中的分压器部分串联耦合的可切换元件。 可切换元件的导通到关断时间的比率决定了通过分压器的平均电流，从而确定了偏置电压。 为了防止通过高侧晶体管的过大的短路电流流过，可切换元件响应于短路状况的检测而被关断。

公开(公告)号：US07433377B2

公开(公告)日：2008-10-07

申请号：US10444460

申请日：2003-05-22

申请人： Patrick A. Quinn ,  Chung-Chieh Yu

发明人： Patrick A. Quinn ,  Chung-Chieh Yu

IPC分类号： H01S3/00

CPC分类号： H01S5/042 ,  H01S5/0427

摘要： A laser diode is employed to output light. A laser driver is employed to drive the laser diode. A laser driver control unit is employed to control the driving, such that carrier concentration of the laser is substantially forced to a desired concentration as photon level of the laser initially arrives at a desired level. In one embodiment, the laser driver outputs a drive pulse to drive the laser diode, with the drive pulse having a complex waveform. In one embodiment, the complex waveform includes different transition time periods, and transient rates to raise the drive pulse from an initial level to a peak level. In another embodiment, the complex waveform includes different transition time periods and transient rates to raise the drive pulse from an initial level to a transition peak level and then drop the drive pulse back to an intermediate low level and then finally transition to a final peak level.

摘要翻译： 采用激光二极管输出光。 采用激光驱动器驱动激光二极管。 使用激光驱动器控制单元来控制驱动，使得激光的载流子浓度基本上被迫到期望的浓度，因为激光的光子水平最初到达期望的水平。 在一个实施例中，激光驱动器输出驱动脉冲以驱动激光二极管，其中驱动脉冲具有复杂波形。 在一个实施例中，复波形包括不同的转变时间段，以及将驱动脉冲从初始电平升高到峰值电平的瞬态速率。 在另一个实施例中，复波形包括不同的转变时间段和瞬态速率，以将驱动脉冲从初始电平升高到转变峰值电平，然后将驱动脉冲降低回中间低电平，然后最终转变到最终峰值电平 。

公开(公告)号：US4146844A

公开(公告)日：1979-03-27

申请号：US846743

申请日：1977-10-31

申请人： Patrick A. Quinn

发明人： Patrick A. Quinn

IPC分类号： H03F1/32 ,  H03F3/45 ,  H03F1/26

CPC分类号： H03F1/32 ,  H03F1/3211 ,  H03F1/3229 ,  H03F3/45103

摘要： A high-precision amplifier employs a feed-forward technique to provide a first order correction of amplifier distortion. A second amplifier is utilized to sense the base-to-emitter distortion of a main amplifier and develop an error output which is injected into an output node to provide cancellation of distortion from the output of the main amplifier. The feed-forward distortion-correction technique is particularly applicable to high-precision wideband differential amplifiers; however, the technique may be used in other amplifiers as well.