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1. 发明授权

US06195437B1 Method and apparatus for independent gain control of a microphone and speaker for a speakerphone mode and a non-speakerphone audio mode of a computer system 失效
标题翻译：用于独立增益控制用于计算机系统的扬声器电话模式和非扬声器音频模式的麦克风和扬声器的方法和装置
公开(公告)号：US06195437B1
公开(公告)日：2001-02-27
申请号：US08941580
申请日：1997-09-30
申请人： Mitchell A. Markow , Jeremy Ford , Ji-An Gong
发明人： Mitchell A. Markow , Jeremy Ford , Ji-An Gong
IPC分类号： H04B1500
CPC分类号： H04M1/6033 , H04M9/08
摘要： A method and apparatus for controlling acoustic gain during a non-speakerphone audio mode of computer system independent of acoustic gain during a speakerphone mode of the computer system is provided. The BIOS code of the computer system detects whether the computer system is in a speakerphone mode or a non-speakerphone audio mode. If the computer system is in a speakerphone mode, an upper gain limit is not applied to the microphone path of the computer system. If the computer system is in a non-speakerphone audio mode, a predetermined upper gain limit is applied to the microphone path of the computer system. The predetermined upper gain limit is preferably applied to the microphone path at either a microphone pre-amplifier or an audio mixer chip in the microphone path of the computer system.
摘要翻译：提供一种在计算机系统的免提电话模式期间独立于声学增益的用于控制计算机系统的非扬声器电话音频模式期间的声增益的方法和装置。计算机系统的BIOS代码检测计算机系统是扬声器模式还是非扬声器音频模式。如果计算机系统处于免提模式，则不会对计算机系统的麦克风路径应用较高的增益限制。如果计算机系统处于非扬声器音频模式，则将预定的上限增益限制应用于计算机系统的麦克风路径。优选地，在计算机系统的麦克风路径中的麦克风前置放大器或音频混合器芯片的麦克风路径处应用预定的上限增益限制。

2. 发明授权

US06459942B1 Acoustic coupling compensation for a speakerphone of a system 失效
标题翻译：系统扬声器的声耦合补偿
公开(公告)号：US06459942B1
公开(公告)日：2002-10-01
申请号：US08940928
申请日：1997-09-30
申请人： Mitchell A. Markow , Jeremy Ford , Ji-An Gong
发明人： Mitchell A. Markow , Jeremy Ford , Ji-An Gong
IPC分类号： G06F1700
CPC分类号： H04M9/082
摘要： A speakerphone of a system with a digital signal processor, such as a computer, uses a filter set or network to provide acoustic coupling loss at a microphone to offset acoustic coupling gain produced by sound reflections resulting from various conditions in the system. The filter network processes an acoustic signal before the signal is provided to a digital signal processor to eliminate acoustic coupling gain that the digital signal processor is unable to cancel or offset. The filter network detects when the acoustic coupling gain in the acoustic signal at the microphone exceeds the maximum amount of acoustic coupling loss supplied by the digital signal processor. Alternatively, if acoustic coupling gain is desirable at the frequency location of the anomaly caused by the sound reflections, the filter network is used to boost the acoustic coupling gain produced by the anomaly. Thus, the present speakerphone uses equalization at the microphone to boost or attenuate acoustic coupling gain caused by frequency anomalies before acoustic echo cancellation by the digital signal processor.
摘要翻译：具有诸如计算机的数字信号处理器的系统的扬声器使用滤波器组或网络来提供麦克风处的声耦合损耗，以补偿由系统中的各种条件导致的声音反射产生的声耦合增益。滤波器网络在将信号提供给数字信号处理器之前处理声信号，以消除数字信号处理器不能取消或抵消的声耦合增益。滤波器网络检测麦克风的声信号中的声耦合增益何时超过由数字信号处理器提供的最大声耦合损耗量。或者，如果在由声音反射引起的异常的频率位置期望声耦合增益，则使用滤波器网络来提高由异常产生的声耦合增益。因此，本发明的扬声器在麦克风上使用均衡来增强或减弱由数字信号处理器进行声学回波消除之前由频率异常引起的声耦合增益。

3. 发明授权

US06359994B1 Portable computer expansion base with enhancement speaker 失效
标题翻译：带增强扬声器的便携式计算机扩展基座
公开(公告)号：US06359994B1
公开(公告)日：2002-03-19
申请号：US09086054
申请日：1998-05-28
申请人： Mitchell A. Markow , Ji-An Gong
发明人： Mitchell A. Markow , Ji-An Gong
IPC分类号： H04R102
CPC分类号： G06F1/1616 , G06F1/1632 , G06F1/1688 , H04R5/02 , H04R2205/021
摘要： An expansion base with a rearward-emitting expansion speaker for emitting low frequency audio and providing surround sound capability. The frequency response of the expansion speaker includes subwoofer frequencies, and is also extended to 600 Hz or higher, to enhance surround sound and spatial impression effects.
摘要翻译：一个具有向后发射扩展扬声器的扩展基座，用于发射低频音频并提供环绕声功能。扩展扬声器的频率响应包括重低音扬声器频率，并且还扩展到600Hz或更高，以增强环绕声和空间印象效果。

4. 发明授权

US06175489B1 Onboard speaker system for portable computers which maximizes broad spatial impression 失效
标题翻译：用于便携式计算机的车载扬声器系统，其最大化了广泛的空间印象
公开(公告)号：US06175489B1
公开(公告)日：2001-01-16
申请号：US09090689
申请日：1998-06-04
申请人： Mitchell A. Markow , David E. Gough , Jeremy Ford
发明人： Mitchell A. Markow , David E. Gough , Jeremy Ford
IPC分类号： H05K500
CPC分类号： H04R5/02
摘要： A stereo speaker system for portable computers which maximizes spatial impression by using rearward-firing speakers, mounted in the back of the display, in combination with forward-firing speakers mounted on the chassis or in the front side of the display.
摘要翻译：一种用于便携式计算机的立体声扬声器系统，其通过使用安装在显示器背面的向后发射扬声器与安装在底盘上或正面显示器的前方发射扬声器相结合，使空间印象最大化。

5. 发明授权

US6028944A Signal processing apparatus with selective power amplification 失效
标题翻译：具有选择性功率放大的信号处理装置
公开(公告)号：US6028944A
公开(公告)日：2000-02-22
申请号：US810431
申请日：1997-03-04
申请人： Mitchell A. Markow , Rabah S. Hamdi
发明人： Mitchell A. Markow , Rabah S. Hamdi
IPC分类号： H03F3/217 , H03G5/00 , H03G7/00 , H03F21/00
CPC分类号： H03G5/005 , H03F3/2173 , H03G5/165 , H03G7/007
摘要： A signal processing apparatus for processing data digital signals is disclosed. The signal processing apparatus includes a high-efficiency power switching amplifier that optimizes processing during low-power applications. A signal equalizer is further coupled to the power switching amplifier and has a plurality of signal bands for defining equalization characteristic desired for the signal processing system. A gain control unit is coupled to the signal equalizer for adjusting gain of the equalized input signal handled by the signal equalizer. Lastly, a digital amplitude compressor is coupled to the gain controller and the power switching amplifier and is programmable so as to compress only those signals having an amplitude greater than a first threshold level without compressing those signals that fall below that first threshold level. Typically, low-power applications cover wattage ranging from two to seven watts of power.
摘要翻译：公开了一种用于处理数据数字信号的信号处理装置。该信号处理装置包括一个在低功率应用中优化处理的高效率功率开关放大器。信号均衡器还耦合到功率开关放大器，并且具有用于定义信号处理系统所需的均衡特性的多个信号频带。增益控制单元耦合到信号均衡器，用于调整由信号均衡器处理的均衡输入信号的增益。最后，数字幅度压缩器耦合到增益控制器和功率开关放大器，并且是可编程的，以便只压缩具有大于第一阈值电平的幅度的那些信号，而不压缩那些低于第一阈值电平的信号。通常，低功耗应用覆盖功率从2到7瓦的功率。

6. 发明授权

US06671171B1 Portable electronic device having chassis reinforcement system 有权
标题翻译：具有底盘加强系统的便携式电子设备
公开(公告)号：US06671171B1
公开(公告)日：2003-12-30
申请号：US09717830
申请日：2000-11-21
申请人： Steve S. Homer , Mitchell A. Markow , David E. Gough
发明人： Steve S. Homer , Mitchell A. Markow , David E. Gough
IPC分类号： G06F116
CPC分类号： G06F1/1656 , G06F1/1616 , G06F1/1688
摘要： A portable electronic device having a rigid chassis. The portable electronic device utilizes a reinforcement structure within the chassis. The structure is designed for application in a space constrained area by incorporating one or more speaker mounts and speakers for audio output.
摘要翻译：具有刚性底盘的便携式电子设备。便携式电子设备利用底盘内的加强结构。该结构设计用于在空间受限区域中应用，通过结合一个或多个扬声器安装座和扬声器用于音频输出。

7. 发明授权

US06633647B1 Method of custom designing directional responses for a microphone of a portable computer 失效
标题翻译：为便携式计算机的麦克风定制方向响应的方法
公开(公告)号：US06633647B1
公开(公告)日：2003-10-14
申请号：US08885984
申请日：1997-06-30
申请人： Mitchell A. Markow , David E. Gough
发明人： Mitchell A. Markow , David E. Gough
IPC分类号： H04R300
CPC分类号： H04R1/406
摘要： Custom designed polar patterns for a microphone of a portable computer are achieved. A custom designed polar pattern permits a microphone in a portable computer to suppress sources of spatially-dependent noise internal and external to a portable computer system. A custom designed polar pattern is generated by specially configuring the boot of a microphone by varying the hole sizes of the boot and/or varying location of the microphone element in the boot. In addition, the shape of a particular polar pattern may be adjusted by inserting acoustic absorption material into the boot, forming enclosed walls into the boot, or rotating the top shell of the portable computer which contains the microphone relative to the bottom shell of the portable computer. Thus, a directional response of a microphone may be form-fitted to a particular portable computer configuration.
摘要翻译：实现了用于便携式计算机的麦克风的定制设计的极坐标图案。定制设计的极性图案允许便携式计算机中的麦克风抑制便携式计算机系统内部和外部的与空间相关的噪声源。通过改变靴子的孔尺寸和/或靴子中的麦克风元件的变化位置来专门配置麦克风的引导件来产生定制设计的极坐标图案。此外，特定极性图形的形状可以通过将吸声材料插入靴子中来调节，将封闭的壁形成靴子，或者使包含麦克风的便携式计算机的顶壳相对于便携式的底部壳体旋转电脑。因此，麦克风的定向响应可以形成为特定的便携式计算机配置

8. 发明授权

US06314010B1 Slope-based primary feedback to control the off-time of a power supply 失效
标题翻译：基于斜率的主要反馈来控制电源的关闭时间
公开(公告)号：US06314010B1
公开(公告)日：2001-11-06
申请号：US09513678
申请日：2000-02-25
申请人： Mitchell A. Markow , Stephen K. Gustafson
发明人： Mitchell A. Markow , Stephen K. Gustafson
IPC分类号： H02M3335
CPC分类号： H02M3/33507 , H02M2001/009
摘要： A high voltage flyback power supply provides slope-based primary feedback to control the off-time of the power supply. When a negative slope is detected at a low side of a primary winding of the power supply, an off-time cycle is terminated and a next on-time cycle is initiated. The slope-based off-time primary feedback helps to keep the off-time of the power supply in sync with ringing of the primary leakage inductance and the primary-side capacitance of the power supply. Such a power supply is particularly useful for battery-powered systems with low voltage rails. The power supply can also include on-time feedback to shorten the on-time of the power supply after the secondary-side voltage rises beyond a certain relatively high voltage level. In this way, the transformer of the power supply is charged less when the power supply is driving relatively light loads.
摘要翻译：高电压回扫电源提供基于斜率的初级反馈来控制电源的关闭时间。当在电源的初级绕组的低侧检测到负斜率时，停止关闭时间循环并且开始下一个接通时间周期。基于斜率的关断时间主反馈有助于保持电源的关闭时间与主要漏电感和电源的初级侧电容的振铃同步。这种电源对于具有低电压轨的电池供电的系统特别有用。电源还可以包括准时反馈，以在次级侧电压升高超过某个相对高的电压电平之后缩短电源的接通时间。这样，当电源驱动相对较轻的负载时，电源的变压器充电较少。

9. 发明授权

US5796854A Thin film speaker apparatus for use in a thin film video monitor device 失效
标题翻译：用于薄膜视频监视器的薄膜扬声器装置
公开(公告)号：US5796854A
公开(公告)日：1998-08-18
申请号：US810432
申请日：1997-03-04
申请人： Mitchell A. Markow
发明人： Mitchell A. Markow
IPC分类号： G06F1/16 , H04R1/02 , H04R5/02 , H04R7/04 , H04R7/06 , H04R17/00 , H04R25/00
CPC分类号： G06F1/1616 , G06F1/1688 , H04R5/02 , H04R1/028 , H04R17/00 , H04R2205/022 , H04R2499/15 , H04R7/04 , H04R7/06
摘要： A speaker system for use in a thin film video monitor apparatus is disclosed. The video monitor apparatus includes a thin film video display panel as well as a stiffening panel adjacent to the thin film video display panel. Next, a plurality of piezo speaker transducers are attached to one of the sides of the stiffening panel. The stiffening panel typically is composed of a material such as aluminum honeycomb sheets or a polycarbonate sheet. Other materials for use as the stiffener may include magnesium shells or ABS plastic. The speakers are defined so that a first sound channel and a second sound channel are provided, and these sound channels can define a left and right channel for proper stereo imaging. Between the video monitor and the stiffening panel is located an electromagnetic interference (EMI) shield. Further, a transmission line is provided to connect a first piezo transducer to a second piezo transducer in such a way so that frequency overlap can occur between the two transducers based upon the transmission line distance defined for the first piezo transducer and for the second piezo transducer. Further, the transmission line may have the same distance between both speakers where frequency overlap is not a concern. The stiffening panel is provided to increase the mobile energy in the lower frequencies during operation.
摘要翻译：公开了一种用于薄膜视频监视器装置的扬声器系统。视频监视器装置包括薄膜视频显示面板以及与薄膜视频显示面板相邻的加强板。接下来，多个压电扬声器换能器附接到加强板的一侧。加强板通常由铝蜂窝片或聚碳酸酯片等材料构成。用作加强筋的其它材料可包括镁壳或ABS塑料。扬声器被定义为使得提供第一声道和第二声道，并且这些声道可以定义用于正确立体声成像的左右声道。在视频监视器和加强板之间设有电磁干扰（EMI）屏蔽。此外，传输线被提供以将第一压电换能器连接到第二压电换能器，使得基于为第一压电换能器和第二压电换能器定义的传输线距离，两个换能器之间可能发生频率重叠。此外，传输线可以在两个扬声器之间具有相同的距离，其中不重视频率重叠。提供加强板以在操作期间增加较低频率下的移动能量。

10. 发明授权

US07142683B1 Computer with acoustic driver built into acoustically leaky chassis 失效
标题翻译：具有声学驱动器的计算机内置在声学泄漏的底盘中
公开(公告)号：US07142683B1
公开(公告)日：2006-11-28
申请号：US09259852
申请日：1999-03-01
申请人： Mitchell A. Markow , David E. Gough
发明人： Mitchell A. Markow , David E. Gough
IPC分类号： H04R1/02 , H04R9/06
CPC分类号： H04R1/025 , H04R2499/15
摘要： A desktop computer which has a driver mounted in the back wall of the chassis. The chassis is acoustically a very leaky box, so the driver is designed as if it were a free-space driver (using large cone area and long throw). In one class of embodiments, a single driver is used, and is centered in the back of the box so that there is an equal left-right split, although not true stereo. The front of the box may be made more acoustically leaky to move the acoustic image forward. The treatment of the box as being acoustically leaky means that the airflow required for thermal management has not been restricted. The use of a long-throw driver permits the volume-velocity of the driver to be increased. Treatment of the box as very leaky also means that no user changes or custom configurations will significantly disturb the expected acoustic environment. An audio system incorporating a free-space driver with an equalizer designed for use with a free-space driver further improves acoustic quality. Gain staging may also be used to improve acoustic quality of the audio system.
摘要翻译：一种台式计算机，其具有安装在底盘的后壁中的驱动器。底盘在声学上是一个非常泄漏的盒子，所以驱动程序的设计就像是一个自由空间的驱动程序（使用大的锥面积和长的投掷）。在一类实施例中，使用单个驱动器，并且在盒的后部居中，使得存在相同的左右分割，尽管不是真正的立体声。盒子的前部可能会使声音泄漏，以使声像向前移动。盒子的声学泄漏处理意味着热管理所需的气流没有受到限制。使用长投掷驱动器可以增加驾驶员的体积 - 速度。处理盒子非常泄漏也意味着没有用户更改或定制配置将显着打扰预期的声学环境。包含设计用于自由空间驱动器的均衡器的自由空间驱动器的音频系统进一步提高了声音质量。增益分级也可用于改善音频系统的声学质量。

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