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公开(公告)号：US07339628B2
公开(公告)日：2008-03-04
申请号：US10964547
申请日：2004-10-13
申请人： Daniel Gudmondson , John L. Melanson , Rahul Singh , James A. Antone , Ahsan Habib Chowdhury , Krishnan Subramoniam
发明人： Daniel Gudmondson , John L. Melanson , Rahul Singh , James A. Antone , Ahsan Habib Chowdhury , Krishnan Subramoniam
IPC分类号： H03M1/12
CPC分类号： H04N5/4401 , H04N5/602 , H04N5/76 , H04N5/781 , H04N9/8042 , H04N11/20 , H04N21/4147 , H04N21/4305
摘要： Video decoder systems in which both the analog-to-digital converter and the composite decoder are driven by the stable sample clock, such as a crystal source. The outputs of the composite decoder are provided to a source rate converter, having an output that is provided to a digital output formatter. The digital output formatter is driven by the output clock, which may be locked to the source clock if desired. The output clock is developed by a clock generator which may be one of several different types, including a fractional N synthesizer, a direct digital synthesizer or a puncture clock.
摘要翻译： 视频解码器系统，其中模数转换器和复合解码器均由诸如晶体源的稳定采样时钟驱动。 复合解码器的输出被提供给源速率转换器，其具有提供给数字输出格式器的输出。 数字输出格式化器由输出时钟驱动，如果需要，可以将其锁定到源时钟。 输出时钟由时钟发生器开发，时钟发生器可以是几种不同类型之一，包括分数N合成器，直接数字合成器或穿孔时钟。
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2.发明授权Method and apparatus to interface video signals to a decoder to compensate for droop 有权将视频信号连接到解码器以补偿下垂的方法和装置公开(公告)号：US07400362B1
公开(公告)日：2008-07-15
申请号：US11015756
申请日：2004-12-16
CPC分类号： H04N5/21
摘要： A system in which drooping of the video levels due to leakage currents and proper DC bias level is addressed by providing a charge into the video signal to offset the leakage currents and to provide DC bias. To determine the leakage current level, measurements are made measuring the voltages of the syncs and the blanking intervals. To determine the DC bias, a measurement is made of the sync. Over a series of video lines these measurements are averaged. If the average is below the desired level, a charge is provided via a current source to the incoming signal. By having the current source provide charge during each video line, droop is reduced and the proper DC bias is provided.
摘要翻译： 通过向视频信号中提供电荷来补偿泄漏电流并提供DC偏压来解决由泄漏电流和适当的DC偏置电平引起的视频电平下降的系统。 为了确定泄漏电流电平，可以测量同步电压和消隐间隔。 为了确定直流偏置，测量同步。 通过一系列视频线对这些测量进行平均。 如果平均值低于所需的电平，则通过电流源向输入信号提供电荷。 通过使电流源在每个视频行期间提供电荷，降低下降并提供适当的DC偏压。
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3.发明授权Video quality adaptive variable-rate buffering method and system for stabilizing a sampled video signal 有权用于稳定采样视频信号的视频质量自适应可变速率缓冲方法和系统公开(公告)号：US07471340B1
公开(公告)日：2008-12-30
申请号：US11088447
申请日：2005-03-24
CPC分类号： H03L7/1974 , H03L7/08 , H03L7/0805 , H03L2207/50 , H04N5/12 , H04N5/213 , H04N5/765 , H04N5/85 , H04N7/0132 , H04N9/8042 , H04N9/896 , H04N21/4325 , H04N21/44004
摘要： A video quality adaptive variable-rate buffering method and system for stabilizing a sampled video signal reduces the buffer size required to compensate for line-to-line variations in an unstable video source. A video signal is sampled at a predetermined rate and decimated by a selectable decimation factor prior to buffering. By selecting different decimation factors, the effective length of the buffer is changed from short duration for stable input signals and to longer duration for unstable input signals. A video signal quality detector is employed to provide a selection input that adjusts the decimation factor and also the loop bandwidth of a clock generator that provides the output clock for the buffer, which is generated from the input signal via a phase-lock loop (PLL). The operation of the system automatically varies from highly responsive for stable video input signals to less responsive for unstable video input signals, providing improved stability in the video output.
摘要翻译： 用于稳定采样视频信号的视频质量自适应可变速率缓冲方法和系统降低了补偿不稳定视频源中的线间变化所需的缓冲器大小。 以预定的速率对视频信号进行采样，并在缓冲之前用可选择的抽取因子进行抽取。 通过选择不同的抽取因子，缓冲器的有效长度从稳定输入信号的短持续时间改变为不稳定输入信号的持续时间。 采用视频信号质量检测器来提供选择输入，其调节抽取因子以及时钟发生器的环路带宽，该时钟发生器提供缓冲器的输出时钟，该时钟发生器通过锁相环（PLL）从输入信号产生 ）。 系统的操作自动变化，从稳定的视频输入信号的高度响应到对不稳定的视频输入信号的响应不足，提高了视频输出的稳定性。
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公开(公告)号：US07310119B1
公开(公告)日：2007-12-18
申请号：US10862685
申请日：2004-06-07
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： An adaptive circuit and method for separating luminance and chrominance components from a composite video signal by deriving three input lines from the composite video signal, determining whether any luminance similarity exists among the three input lines, and then selectively enabling a component filter based on any luminance similarity. If no luminance similarity exists among all three of the input lines, then a subtractive comb filter is enabled to maintain high vertical luminance resolution. If luminance similarity exists among all three of the input lines, then an additive comb filter is enabled. The additive comb filter performs three-line averaging when a high degree of similarity exists among all three consecutive input lines to minimize cross-chroma artifacts on lines that are similar. Chrominance similarity among the three input lines can also be determined by generating first and second chrominance values using different pairs of the three input lines, computing a difference of the first and second chrominance values, and comparing the chroma difference to a threshold value. If no luminance similarity exists between any of the three input lines or no chrominance similarity exists (i.e., there is vertical chroma transition), then a notch filter incorporated into the subtractive comb filter can be enabled.
摘要翻译： 一种通过从复合视频信号中导出三条输入线从复合视频信号中分离亮度和色度分量的自适应电路和方法，确定在三条输入线之间是否存在任何亮度相似度，然后基于任何亮度选择性地使能分量滤波器 相似。 如果在所有三条输入线之间不存在亮度相似性，则使减法梳状滤波器能够保持高的垂直亮度分辨率。 如果在所有三条输入线之间存在亮度相似性，则启用加性梳状滤波器。 当所有三条连续的输入线之间存在高度相似度时，加法梳状滤波器进行三线平均，以使相似线上的交叉色度伪影最小化。 也可以通过使用三条输入线的不同对产生第一和第二色度值，计算第一和第二色度值的差异以及将色度差与阈值进行比较来确定三条输入线之间的色度相似度。 如果在三条输入线中的任何一条线之间不存在亮度相似性，或者不存在色度相似性（即存在垂直色度转换），则可以启用并入减法梳状滤波器的陷波滤波器。
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5.发明授权公开(公告)号：US07423697B1
公开(公告)日：2008-09-09
申请号：US11015728
申请日：2004-12-16
IPC分类号： H04N7/18
摘要： A system in which drooping of the video levels due to leakage currents and proper DC bias level is addressed by providing a charge into the video signal to offset the leakage currents and to provide DC bias. To determine the leakage current level, measurements are made measuring the voltages of the syncs and the blanking intervals. To determine the DC bias, a measurement is made of the sync. Over a series of video lines these measurements are averaged. If the average is below the desired level, a charge is provided via a current source to the incoming signal. By having the current source provide charge during each video line, droop is reduced and the proper DC bias is provided.
摘要翻译： 通过向视频信号中提供电荷来补偿泄漏电流并提供DC偏压来解决由泄漏电流和适当的DC偏置电平引起的视频电平下降的系统。 为了确定泄漏电流电平，可以测量同步电压和消隐间隔。 为了确定直流偏置，测量同步。 通过一系列视频线对这些测量进行平均。 如果平均值低于所需的电平，则通过电流源向输入信号提供电荷。 通过使电流源在每个视频行期间提供电荷，降低下降并提供适当的DC偏压。
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公开(公告)号：US5602505A
公开(公告)日：1997-02-11
申请号：US603702
申请日：1996-02-20
申请人： James A. Antone
发明人： James A. Antone
IPC分类号： H03K17/06 , H03K17/687
CPC分类号： H03K17/063
摘要： In one aspect of the present invention a gate drive circuit is disclosed. The gate drive circuit includes a high voltage and low voltage energy source, a power transistor, a switching transistor, and a charging capacitor. The charging capacitor stores energy from the low voltage energy source. The gate drive circuit further includes a circuit that biases the switching transistor OFF which causes the low voltage energy stored in the capacitor to bias the power transistor ON to transfer high voltage energy to the load. The circuit additionally biases the switching transistor ON which biases the power transistor OFF to block the transfer of high voltage energy. Finally, a protection device is included to limit the power transistor voltage to a maximum voltage level in response to the power transistor being biased ON.
摘要翻译： 在本发明的一个方面，公开了一种栅极驱动电路。 栅极驱动电路包括高电压和低电压能量源，功率晶体管，开关晶体管和充电电容器。 充电电容器存储来自低电压能量源的能量。 栅极驱动电路还包括偏置开关晶体管截止的电路，其使得存储在电容器中的低电压能量偏置功率晶体管导通以将高电压能量传递到负载。 电路另外偏置开关晶体管ON，偏置功率晶体管关闭，以阻止高压能量的传输。 最后，包括保护装置以将功率晶体管电压限制在最大电压电平，以响应于功率晶体管被偏置导通。
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公开(公告)号：US5809957A
公开(公告)日：1998-09-22
申请号：US662173
申请日：1996-06-12
申请人： James A. Antone , Martin L. Willi
发明人： James A. Antone , Martin L. Willi
CPC分类号： F02P19/021 , F02P19/026
摘要： A method of prolonging the life of glow plugs comprises the steps of providing a variable displacement pump rotatably connected to a internal combustion engine; driving a hydraulic motor at a generally constant speed with the hydraulic output of the variable displacement pump and directly connecting an alternator to the hydraulic motor to energize the glow plugs with an AC current and voltage and controlling the AC current to maintain a generally constant glow plug temperature from startup and throughout the entire operating range of the internal combustion engine.
摘要翻译： 延长电热塞寿命的方法包括以下步骤：提供可旋转地连接到内燃机的可变排量泵; 以可变容量泵的液压输出以大致恒定的速度驱动液压马达，并将交流发电机直接连接到液压马达，以交流电流和电压为电热塞供能，并控制交流电流以维持大体上恒定的电热塞 内燃机起动和整个工作范围内的温度。
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公开(公告)号：US5361014A
公开(公告)日：1994-11-01
申请号：US150706
申请日：1993-11-10
申请人： James A. Antone , Fred C. Lee , Wojciech A. Tabisz
发明人： James A. Antone , Fred C. Lee , Wojciech A. Tabisz
CPC分类号： F02D41/2096 , H02N2/067
摘要： An apparatus that drives a piezoelectric actuator in response to charging and discharging command signals is disclosed. The apparatus includes an energy source that supplies electrical energy to the piezoelectric actuator. A charging circuit includes: a charging transistor connected to the energy source to control the amount energy supplied to the piezoelectric actuator, a charging inductor connected to the charging transistor to limit the rate of change of energy supplied to the piezoelectric actuator, and a charging thyristor disposed between the charging circuit and the piezoelectric actuator. A selecting circuit receives the charging command signal and responsively biases the charging thyristor ON to connect the piezoelectric actuator to the charging circuit. A comparator determines the magnitude of voltage applied to the piezoelectric actuator. A control circuit receives the charging command signal, and responsively biases the charging transistor alternately ON and OFF to control the amount of energy supplied to the piezoelectric actuator in response to the piezoelectric actuator voltage being less than an upper desired voltage value. Finally, the selecting circuit biases the charging thyristor OFF to disconnect the piezoelectric actuator from the charging circuit in response to the piezoelectric actuator voltage being greater than or equal to the upper desired voltage value.
摘要翻译： 公开了一种响应于充电和放电命令信号驱动压电致动器的装置。 该装置包括向压电致动器提供电能的能量源。 充电电路包括：连接到能量源的充电晶体管，以控制提供给压电致动器的能量;连接到充电晶体管的充电电感器，以限制供应给压电致动器的能量的变化率;以及充电晶闸管 设置在充电电路和压电致动器之间。 选择电路接收充电命令信号并响应于偏置充电晶闸管导通以将压电致动器连接到充电电路。 比较器确定施加到压电致动器的电压的大小。 控制电路接收充电命令信号，并且响应于交替地开启和关闭充电晶体管而响应于压电致动器电压小于上限期望电压值来控制提供给压电致动器的能量的量。 最后，选择电路将充电晶闸管偏置，以响应于压电致动器电压大于或等于上限期望电压值，将压电致动器与充电电路断开。
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公开(公告)号：US5828261A
公开(公告)日：1998-10-27
申请号：US747854
申请日：1996-11-13
申请人： James A. Antone , Paul C. Gottshall
发明人： James A. Antone , Paul C. Gottshall
IPC分类号： H03K17/082 , H03K17/687 , H03K17/16
CPC分类号： H03K17/0822 , H03K17/6877
摘要： In one aspect of the present invention a gate drive circuit is disclosed. The gate drive circuit includes a first voltage source, a power transistor, a first and second switching device, and a controller. The power transistor has a drain connected to the first voltage source and a source connected to a load. The first switching device is connected to the power transistor gate and biases the power transistor ON to transfer energy from the first voltage source to the load. The second switching device is connected to the power transistor gate and biases the power transistor OFF to block the transfer of energy from the first voltage source to the load. The controller is connected to the first and second switching device and controls the power transistor at a first state where the first switching device biases the power transistor ON, controls the power transistor at a second state where the second switching device biases the power transistor OFF and provides a signal path from the power transistor gate to ground, and controls the power transistor at a third state where the second switching device biases the power transistor OFF to protect the second switching device from short circuit voltages in response to the controller detecting a short circuit condition in the power transistor.
摘要翻译： 在本发明的一个方面，公开了一种栅极驱动电路。 栅极驱动电路包括第一电压源，功率晶体管，第一和第二开关器件以及控制器。 功率晶体管具有连接到第一电压源的漏极和连接到负载的源极。 第一开关器件连接到功率晶体管栅极，并且将功率晶体管接通以将能量从第一电压源传输到负载。 第二开关器件连接到功率晶体管栅极并且将功率晶体管偏置为截止以阻止从第一电压源到负载的能量传递。 控制器连接到第一和第二开关装置，并且在第一开关装置将功率晶体管导通的位置处于第一状态的情况下控制功率晶体管，在第二状态下将功率晶体管控制在第二状态，在第二状态下，第二开关器件将功率晶体管偏置， 提供从功率晶体管栅极到地的信号路径，并且在第二状态下控制功率晶体管，在第三状态下，第二开关器件将功率晶体管偏置，以响应于控制器检测短路而保护第二开关器件免于短路电压 功率晶体管的状态。
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公开(公告)号：US5717562A
公开(公告)日：1998-02-10
申请号：US720994
申请日：1996-10-15
CPC分类号： H01H47/325 , F02D41/20 , F02D2041/2003 , F02D2041/2006 , F02D2041/2017 , F02D2041/2058 , H01F7/1844
摘要： A solenoid driver circuit is controlled by an electronic control module ("ECM") and eliminates many components required for a high voltage power supply required by the prior art. The solenoid driver circuit includes a high voltage select switch, a select switch and a modulation switch that are controlled by the ECM. The ECM causes the switches to be opened and closed so that the back EMF created by the solenoid coil when the modulation switch is opened can be recaptured by charging a capacitor. That energy can then be used to energize the solenoid coil.
摘要翻译： 螺线管驱动电路由电子控制模块（“ECM”）控制，并消除了现有技术所需的高压电源所需的许多部件。 螺线管驱动电路包括由ECM控制的高电压选择开关，选择开关和调制开关。 ECM使开关打开和关闭，使得当调制开关打开时由螺线管线圈产生的反电动势可以通过对电容器充电来重新捕获。 然后可以使用该能量来激励螺线管线圈。
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