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    • 2. 发明授权
    • Audio crossfading
    • 音频交叉淡入淡出
    • US08473084B2
    • 2013-06-25
    • US12873924
    • 2010-09-01
    • Aram LindahlAlexander KanarisJoseph M. WilliamsRichard M. Powell
    • Aram LindahlAlexander KanarisJoseph M. WilliamsRichard M. Powell
    • G06F17/00
    • G11B20/10G11B2020/10546G11B2020/10759
    • Techniques are presented for dynamically controlling an audio crossfade from a first audio track to a second audio track. The first audio track may be decoded and buffered to a first buffer. A user may select a second audio track at some point during playback of the first audio track. The second audio track may be decoded, and a processor may access the decoded second audio track and the buffered first audio track and mix the two audio tracks. The mixed audio track may be inserted in the same first buffer near or at the read pointer of the first buffer, such that latency between the user selection and the crossfade into the selected audio track may be minimized. The insertion of the mixed audio track may depend on various factors, including the type of audio file and/or the decoder type used to decode the second audio track.
    • 提供了用于动态地控制从第一音频轨道到第二音频轨道的音频交叉渐变的技术。 第一音频轨道可以被解码并缓冲到第一缓冲器。 用户可以在第一音轨的播放期间的某一点选择第二音轨。 第二音频轨道可以被解码,并且处理器可以访问经解码的第二音频轨道和缓冲的第一音频轨道并混合两个音频轨道。 混合音频轨道可以被插入在第一缓冲器的读指针附近或其附近的相同的第一缓冲器中,使得用户选择和与所选音轨之间的交叉渐变的等待时间可以被最小化。 混合音轨的插入可以取决于各种因素,包括音频文件的类型和/或用于解码第二音轨的解码器类型。
    • 3. 发明申请
    • AUDIO CROSSFADING
    • 音频交叉
    • US20120053710A1
    • 2012-03-01
    • US12873924
    • 2010-09-01
    • Aram LindahlAlexander KanarisJoseph M. WilliamsRichard M. Powell
    • Aram LindahlAlexander KanarisJoseph M. WilliamsRichard M. Powell
    • G06F17/00G10L21/00
    • G11B20/10G11B2020/10546G11B2020/10759
    • Techniques are presented for dynamically controlling an audio crossfade from a first audio track to a second audio track. The first audio track may be decoded and buffered to a first buffer. A user may select a second audio track at some point during playback of the first audio track. The second audio track may be decoded, and a processor may access the decoded second audio track and the buffered first audio track and mix the two audio tracks. The mixed audio track may be inserted in the same first buffer near or at the read pointer of the first buffer, such that latency between the user selection and the crossfade into the selected audio track may be minimized. The insertion of the mixed audio track may depend on various factors, including the type of audio file and/or the decoder type used to decode the second audio track.
    • 提供了用于动态地控制从第一音频轨道到第二音频轨道的音频交叉渐变的技术。 第一音频轨道可以被解码并缓冲到第一缓冲器。 用户可以在第一音轨的播放期间的某一点选择第二音轨。 第二音频轨道可以被解码,并且处理器可以访问经解码的第二音频轨道和缓冲的第一音频轨道并混合两个音频轨道。 混合音频轨道可以被插入在第一缓冲器的读指针附近或其上的相同的第一缓冲器中,使得用户选择和与所选音轨之间的交叉渐变的等待时间可以被最小化。 混合音轨的插入可以取决于各种因素,包括音频文件的类型和/或用于解码第二音轨的解码器类型。
    • 4. 发明授权
    • Method and apparatus for monitoring pacemaker intervals
    • 用于监测起搏器间隔的方法和装置
    • US5372607A
    • 1994-12-13
    • US081721
    • 1993-06-23
    • Karen A. StoneRichard M. PowellMichael R. TollingerGary Berg
    • Karen A. StoneRichard M. PowellMichael R. TollingerGary Berg
    • A61N1/365A61N1/368A61N1/37
    • A61N1/36514A61N1/368A61N1/37
    • A method and apparatus for optimizing the performance of a rate-responsive cardiac pacemaker. A pacemaker is provided which is capable of obtaining and storing information about a patient's cardiac function and about a pacemaker's operation during a brief exercise interval. The data collected includes information about the number of cardiac events during each two-second interval of the exercise, as well as the percentage of paced events during each two-second interval. Data reflecting the output of the pacemaker's activity sensor output is also collected for each two second interval of the test. In addition, AV interval data for each cardiac cycle during the test is collected, this data being distinguished according to whether it reflects atrial-pace-to-ventricular-sense or atrial-sense-to-ventricular-sense AV intervals. The disclosed pacemaker is operable in conjunction with an external programming/processing unit, which receives the stored data after the exercise test is concluded. The data is processed and presented on the programmer screen in a manner which enables the clinician to readily assimilate it and observe the effects of hypothetical changes in rate-response programming in the pacemaker. Additionally, the clinician is able to observe the programmed AV rate adaption profiles in conjunction with the patient's actual AV performance, and compare this data with an AV profile from a typical healthy heart.
    • 一种用于优化速率响应心脏起搏器的性能的方法和装置。 提供了起搏器,其能够获得和存储关于患者的心脏功能的信息以及在短暂的运动间隔期间关于起搏器的操作。 收集的数据包括关于运动的每两秒间隔期间的心脏事件的数量以及每两秒间隔期间的起搏事件的百分比的信息。 也可以每两个测试间隔收集反映起搏器活动传感器输出信号的数据。 此外,收集测试期间每个心动周期的AV间隔数据,根据它是否反映心房心室感觉或心房感觉到心室感觉AV间隔来区分该数据。 所公开的起搏器可与外部编程/处理单元结合操作,外部编程/处理单元在运动测试结束之后接收存储的数据。 数据在编程器屏幕上被处理和呈现,使得临床医生能够容易地吸收它并且观察起搏器中速率响应编程中假设变化的影响。 此外,临床医生能够结合患者的实际AV性能观察编程的AV速率适应曲线,并将该数据与来自典型健康心脏的AV图像进行比较。
    • 5. 发明授权
    • Program testing apparatus
    • 程序测试仪器
    • US4236524A
    • 1980-12-02
    • US958064
    • 1978-11-06
    • Richard M. PowellKatherine H. Anderson
    • Richard M. PowellKatherine H. Anderson
    • A61N1/362A61N1/372G06Q50/00A61N1/36
    • A61N1/37235A61N1/37247
    • A programmer is disclosed for transmitting encoded signals to a pacing generator to effect the programming of a mode and/or parameter of the pacering generator's operation. The pacing generator applies stimulating pulses to the patient's heart in accordance with the programmed parameters and/or mode and includes a memory for storing the encoded signals and means therein for detecting the successful storage of the parameters in the memory to provide an indication thereof, whereby a generating circuit of the pacing generator generates a test or PIP pulse of given characteristics and within a defined interval after the pacing pulse. The programming apparatus of this invention includes means coupled to the patient's body for sensing his heart activity signals including the stimulating pulses and the PIP pulses, a keyboard for entering the parameters and/or mode of operation to be programmed within the pacing generator, a transmitter for encoding and transmitting the parameters and/or mode of operation to the pacing generator, and a measuring means for measuring the characteristics of the detected PIP pulse and the interval of time between the occurrence of the stimulating pulse and the PIP pulse, for determining whether the measured interval and characteristics are within a predetermined set of limits and if so, for providing a manifestation that the pacing generator has been successfully programmed.
    • 公开了一种编程器,用于将编码信号发送到起搏发生器,以实现安抚发生器操作的模式和/或参数的编程。 起搏发生器根据编程的参数和/或模式将刺激脉冲施加到患者的心脏,并且包括用于存储编码信号的存储器及其中的装置,用于检测在存储器中成功存储参数以提供其指示,由此 起搏发生器的发生电路产生给定特性的测试或PIP脉冲,并且在起搏脉冲之后的确定的间隔内产生。 本发明的编程设备包括耦合到患者身体的装置,用于感测其心脏活动信号,包括刺激脉冲和PIP脉冲,用于输入要在起搏发生器内编程的参数和/或操作模式的键盘,发射器 用于将参数和/或操作模式编码和发送到起搏发生器;以及测量装置,用于测量检测到的PIP脉冲的特性以及刺激脉冲和PIP脉冲发生之间的时间间隔,以便确定是否 所测量的间隔和特性在预定的一组限度内,如果是,则提供起搏发生器已被成功编程的表现。
    • 7. 发明授权
    • Steam generating method and apparatus for simulation test chambers
    • 用于模拟试验室的蒸汽发生方法和装置
    • US07213541B2
    • 2007-05-08
    • US10651050
    • 2003-08-29
    • Richard M. PowellBruce W. Hess
    • Richard M. PowellBruce W. Hess
    • F22G1/28
    • F22B1/284
    • A method and apparatus for providing steam for a test chamber is provided. The apparatus includes a heating element contained within a vessel which is fluid communication with an exterior reservoir wherein the heating element provides heat to generate steam from the water entering the vessel from the reservoir. The method for generating steam includes providing a chamber configured to contain a fluid insetting water into the chamber from a reservoir external from the chamber, controlling an amount of water inlet into the reservoir substantially equalizing the water level in the reservoir with the water level in the chamber. The method also includes heating the water in the chamber to turn at least some of the water into steam and venting at least some of the steam out of the chamber.
    • 提供了一种用于为测试室提供蒸汽的方法和设备。 该装置包括容纳在容器内的加热元件,其与外部储存器流体连通,其中加热元件提供热量以从储存器进入容器的水产生蒸汽。 用于产生蒸汽的方法包括提供一个室,该室被配置成从腔室外部的储存器容纳流体入口水,控制进入储存器的进水量基本上使贮存器中的水位达到等于 房间。 该方法还包括加热室中的水以将至少一些水转化成蒸汽并将至少一些蒸汽排出室外。
    • 8. 发明授权
    • Pacemaker which adapts to minimize current drain and provide desired
capture safety margin
    • 起搏器适应最小化电流消耗并提供所需的捕获安全裕度
    • US5447525A
    • 1995-09-05
    • US122258
    • 1993-09-15
    • Richard M. PowellSteven L. Jensen
    • Richard M. PowellSteven L. Jensen
    • A61N1/37A61N1/365
    • A61N1/3712A61N1/3708
    • A cardiac pacemaker improves battery longevity by automatically providing a safe threshold and an associated pulse width leading to minimum current drain. The pacemaker stores a matrix of current drain characteristics for all of the possible pulse width-voltage pairs, and a revisable strength-duration curve for a patient. Either periodically or as a result of a loss-of-capture episode--whichever occurs first--the pacemaker calculates for each possible pulse width, a new threshold value based upon a measured rheobase and a derived chronaxie. Each threshold is multiplied by a predetermined safety margin. The pacemaker chooses as the pacing stimulation signal, the voltage-pulse width pair having the lowest associated current drain, and satisfying the desired safety margin.
    • 心脏起搏器通过自动提供安全阈值和相关联的脉冲宽度来提高电池寿命,从而实现最小的电流消耗。 起搏器存储所有可能的脉冲宽度 - 电压对的电流漏极特性的矩阵,以及患者的可修改的强度 - 持续时间曲线。 定期或作为捕获事件丢失的结果 - 以先到者为准 - 起搏器计算每个可能的脉冲宽度,基于测量的流变酶和衍生的时间序列的新阈值。 每个阈值乘以预定的安全裕度。 起搏器选择起搏刺激信号,电压脉冲宽度对具有最低的相关电流消耗,并满足期望的安全裕度。
    • 9. 发明授权
    • Pacing generator programmer with transmission checking circuit
    • 起搏发电机编程器带有发射检查电路
    • US4305397A
    • 1981-12-15
    • US173261
    • 1980-07-28
    • Stephen P. WeisbrodBobby L. SmithRichard M. Powell
    • Stephen P. WeisbrodBobby L. SmithRichard M. Powell
    • A61N1/372A61N1/00
    • A61N1/37223
    • A programmer is disclosed for programming with encoded signals selected parameters and modes of operation for the control of a pacing generator including a memory for receiving and storing the encoded signals for the control of its operation. The programmer includes a keyboard for receiving upon selected of its keys the designation of the parameter or the mode of operation, as well as the value of the parameter to be so encoded, a display for indicating the mode or parameter to be programmed as well as the value thereof, a transmitter for encoding and transmitting signals via an antenna or coil to the pacing generator which has a receiving coil therein for detecting the transmitted signal. In accordance with the teachings of this invention, there is included a secondary coil inductively coupled to the antenna to sense the generation of signals therein. The secondary coil is coupled to an amplitude detection circuit for determining whether the amplitude of the detected signal in the secondary coil is equal to or greater than a predetermined minimum level. If so, a signal is generated indicating that a successful transmission of the program parameter or mode of operation was made from the primary coil to the pacing generator.
    • 公开了一种编程器,用编程信号编程所选择的参数和操作模式,用于控制起搏发生器,该起搏发生器包括用于接收和存储用于控制其操作的编码信号的存储器。 编程器包括一个键盘,用于在其选择的键上接收参数或操作模式的指定以及要被编码的参数的值,用于指示要编程的模式或参数的显示以及 其值,用于经由天线或线圈将信号编码和发送到起搏发生器的发射器,其中具有用于检测发射信号的接收线圈。 根据本发明的教导,包括感应耦合到天线以感测其中的信号的产生的次级线圈。 次级线圈耦合到振幅检测电路,用于确定次级线圈中的检测信号的振幅是否等于或大于预定最小电平。 如果是,则产生指示从初级线圈到起搏发生器成功地传送程序参数或操作模式的信号。
    • 10. 发明授权
    • Apparatus for and method of programming the minimum energy threshold for
pacing pulses to be applied to a patient's heart
    • 用于编程应用于患者心脏的起搏脉冲的最小能量阈值的装置和方法
    • US4250884A
    • 1981-02-17
    • US958066
    • 1978-11-06
    • Jerome T. HartlaubBobby L. SmithRichard M. Powell
    • Jerome T. HartlaubBobby L. SmithRichard M. Powell
    • A61N1/372A61N1/36
    • A61N1/37235A61N1/37247
    • A method and apparatus is disclosed for programming a threshold mode of operation into a pacing generator whereby the minimum level of energy of the stimulating pulse as generated by the pacing generator is determined. First, the original level of energy of the stimulating pulses is determined when this mode is commenced. The original energy level and in particular the pulse width is decremented by a predetermined incremental amount, and an encoded signal indicative of the new reduced pulse width is transmitted to the pacing generator, whereby the pacing generator applies the pulses of the reduced pulse width to the patient's heart. Further, there is included means for counting the number of pulses of reduced pulse width and after the application of a given number of pulses by the pacing generator to the patient's heart, the programming apparatus programs a new energy level decremented from the previously programmed value to be then transmitted to the pacing generator.
    • 公开了用于将阈值操作模式编程到起搏发生器中的方法和装置,由此确定由起搏发生器产生的刺激脉冲的最小能量水平。 首先,当该模式开始时确定刺激脉冲的原始能级。 原始能量水平,特别是脉冲宽度递减预定的增量,并且表示新的减小的脉冲宽度的编码信号被发送到起搏发生器,由此起搏发生器将减小的脉冲宽度的脉冲施加到 病人的心。 此外,包括用于计数减小的脉冲宽度的脉冲数的装置,并且在由起搏发生器施加给患者心脏的给定数量的脉冲之后,编程装置对从先前编程的值递减的新的能级进行编程, 然后发送到起搏发生器。