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    • 15. 发明授权
    • Method for adjusting the power level of an infrared signal
    • 调整红外信号功率电平的方法
    • US6104512A
    • 2000-08-15
    • US12444
    • 1998-01-23
    • Charles E. Batey, Jr.Carlos M. RodriguezJohn B. Van Zile
    • Charles E. Batey, Jr.Carlos M. RodriguezJohn B. Van Zile
    • H04B10/114H04B10/00
    • H04B10/1143
    • An electronic device (50) includes an infrared transceiver (510) having adjustable infrared signal intensity capability. The electronic device (50) commences to establish communications with a secondary device (420 and/or 430) at a first power level, if the communication link is not established, the electronic device (50) increases the IR power level and tries again to establish communications. In an alternate embodiment, the electronic device (50) includes a power level table which keeps the power level which has been established for each secondary device (420, 430) using the method described above. The electronic device (50) before communicating with each of the secondary devices determines the proper power level to use depending on the secondary device (420, 430) it wants to communicate with. In still a further embodiment, instead of determining the power level to use at the start of the communications, an ongoing exchange of signal quality information is sent between the communicating devices in order to adjust the power level of the devices during the communication session.
    • 电子设备(50)包括具有可调节的红外信号强度能力的红外收发器(510)。 电子设备(50)开始以第一功率电平建立与辅助设备(420和/或430)的通信,如果通信链路未建立,则电子设备(50)增加IR功率电平并再次尝试 建立沟通。 在替代实施例中,电子设备(50)包括功率电平表,其使用上述方法保持已经为每个辅助设备(420,430)建立的功率电平。 在与每个次级装置通信之前的电子装置(50)根据其想要通信的辅助装置(420,430)确定要使用的适当功率电平。 在又一实施例中,代替确定在通信开始时使用的功率电平,在通信设备之间发送信号质量信息的持续交换,以便在通信会话期间调整设备的功率电平。
    • 18. 发明授权
    • Particle analyzer for measuring the resistance and reactance of a
particle
    • 用于测量颗粒的电阻和电抗的粒子分析仪
    • US4791355A
    • 1988-12-13
    • US921654
    • 1986-10-21
    • Wallace H. CoulterCarlos M. Rodriguez
    • Wallace H. CoulterCarlos M. Rodriguez
    • G01N15/12G01N33/48G01N27/00
    • G01N15/1227G01N2015/129
    • A circuit, which is useful to provide data needed to measure the electrical opacity of a particle, for instance a blood cell, passing through a Coulter type transducer, includes a current source for providing a conventional d.c. current through the sensing aperture of the transducer, as well as an oscillator for providing a high frequency current through the aperture. The oscillator includes an active device and a resonant circuit, and the aperture is coupled in parallel with the resonant circuit of the oscillator. The oscillator can be any type of oscillator, such as a Hartley oscillator. As a particle passes through the aperture, the resistance of the aperture increases, which in turn, increases the Q of the oscillator circuit, whereby the oscillator output signal is amplitude modulated in accordance with the increased Q. This amplitude modulated signal can be detected to provide a value based on the high frequency reactance of the particle being detected. The change in d.c. resistance due to a particle passing through the aperture is detected in a conventional manner. The detected amplitudes of the a.c. and d.c. signals then can be compared to determine the opacity of each particle. Multiple oscillators of different frequencies can be coupled in parallel with the transducer through a coupling circuit, which connects each oscillator to the transducer through a low impedance path and isolates each oscillator from signals having frequencies of the other oscillators.
    • 用于提供测量通过Coulter型换能器的颗粒(例如血细胞)的电气不透明度所需的数据的电路包括用于提供常规直流电流的电流源。 通过传感器的感测孔径的电流,以及用于提供通过孔径的高频电流的振荡器。 振荡器包括有源器件和谐振电路,并且该孔与振荡器的谐振电路并联耦合。 振荡器可以是任何类型的振荡器,例如Hartley振荡器。 当颗粒通过孔径时,孔径的电阻增加,这又增加了振荡器电路的Q,由此根据增加的Q对振荡器输出信号进行幅度调制。该幅度调制信号可以被检测为 提供基于所检测的粒子的高频电抗的值。 d.c.的变化 以常规方式检测通过孔径的颗粒的电阻。 检测到的a.c.的振幅。 和d.c. 然后可以比较信号来确定每个粒子的不透明度。 不同频率的多个振荡器可以通过耦合电路与传感器并联耦合,该耦合电路通过低阻抗路径将每个振荡器连接到换能器,并将每个振荡器与具有其他振荡器频率的信号隔离开来。