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    • 41. 发明授权
    • Wide bandwidth circuits for high linearity optical modulators
    • 宽带宽电路用于高线性光学调制器
    • US06392464B1
    • 2002-05-21
    • US09395443
    • 1999-09-14
    • Jerome J. Tiemann
    • Jerome J. Tiemann
    • H03K508
    • H03F1/3276H04B10/588
    • Wide bandwidth compensating circuits are disclosed for compensating for the nonlinearity of other circuits placed in cascade therewith over a relatively wide bandwidth, particularly for high linearity optical modulators, in which first and second versions of a signal are generated having different gains and different nonlinear distortions. The first signal has a higher gain with a lower distortion. The second signal has a lower gain with a higher distortion, and is subtracted from the first larger amplitude signal to form an output signal having a desired nonlinear transfer characteristic over a relatively wide frequency range. A first exemplary circuit has a first higher gain path and a second lower gain path having a transfer characteristic with a substantially greater amount of negative cubic distortion. The first and second signals are subtracted in a wide band differential amplifier to form a resultant signal having a desired positive cubic distortion. Second and third exemplary circuits are also disclosed.
    • 公开了宽带宽补偿电路,用于补偿在相对宽的带宽上特别是对于高线性光学调制器级联的其它电路的非线性,其中产生具有不同增益和不同非线性失真的信号的第一和第二版本。 第一个信号具有较高的增益,失真度较低。 第二信号具有较低的增益,具有较高的失真,并且从第一较大振幅信号中减去,以在较宽的频率范围内形成具有期望的非线性传递特性的输出信号。 第一示例性电路具有第一较高增益路径和具有基本上更大量的负三次失真的传递特性的第二较低增益路径。 在宽带差分放大器中减去第一和第二信号以形成具有期望的正立方失真的合成信号。 还公开了第二和第三示例性电路。
    • 43. 发明授权
    • Electronic holographic apparatus
    • 电子全息装置
    • US4974920A
    • 1990-12-04
    • US338881
    • 1989-04-17
    • Joseph ChovanWilliam A. PennJerome J. TiemannWilliam E. Engeler
    • Joseph ChovanWilliam A. PennJerome J. TiemannWilliam E. Engeler
    • G03H1/04G03H1/00G03H1/08H04N13/02
    • G03H1/00
    • The invention relates to holography and more particularly to an electronic holographic apparatus whose electrical output represents the magnitude and phase of coherent light reflected from a three-dimensional object and distributed over the aperture of the apparatus. The apparatus provides a coherent beam which illuminates the object to create a speckle pattern in an aperture bounding an optical sensing arrangement. A reference beam derived from the same source as the illuminating beam illuminates the sensing aperture directly and creates fringes in the speckle pattern. The optical sensing arrangement consists of a charge injection device (CID) camera with plural optical detectors arranged in relation to the speckle pattern to sense the magnitude and spatial phase of each speckle (on the average). The sampled outputs of the CID detectors are processed to isolate the magnitude and phase information representing the complex optical wavefront of the hologram from irrelevent terms created by the interference process. The detected information may be used for such purposes as imaging, interferometry, matched filtering or correlation.
    • 本发明涉及全息术,更具体地涉及一种电子全息装置,其电输出表示从三维物体反射并分布在装置的孔径上的相干光的大小和相位。 该装置提供照射物体的相干光束,以在限定光学感测装置的光圈中产生散斑图案。 源自与照明光束相同的源的参考光直接照射感测孔并在散斑图案中产生条纹​​。 光学感测装置由电荷注入装置(CID)相机组成,多个光学检测器相对于散斑图案布置,以感测每个散斑的大小和空间相位(平均)。 对CID检测器的采样输出进行处理,以将表示全息图的复杂光波阵面的幅度和相位信息与由干扰过程产生的不相干项隔离开来。 检测到的信息可以用于成像,干涉测量,匹配滤波或相关等目的。
    • 45. 发明授权
    • Pressure transducer
    • 压力传感器
    • US4823230A
    • 1989-04-18
    • US164300
    • 1988-03-04
    • Jerome J. Tiemann
    • Jerome J. Tiemann
    • G01L9/00G01L9/12H01G7/00
    • G01L9/0072Y10T29/435
    • A pressure transducer has a first electrode fabricated with a predetermined shape upon a substrate surface. A first insulator encloses that portion of the first electrode not enclosed by the substrate; a second insulator forms a wall to a predetermined height above the substrate surface, and outwardly adjacent to the entire periphery of the first electrode. The wall has a base in pressure-tight connection to the substrate and a top opposite to the base. A deflectable second electrode is fabricated in pressure-tight connection across the wall top to enclose, at a reference pressure, a cavity between the first and second electrodes and the wall; the height of the wall, the shape of the first and second electrodes and the deflection characteristics of said second electrode, with respect to pressure, are all predeterminately selected to provide a desired relationship of the capacitance between the first and second electrodes and the pressure incident upon that surface of the second electrode opposite to the cavity.
    • 压力传感器具有在基板表面上以预定形状制造的第一电极。 第一绝缘体包围第一电极的不被衬底包围的部分; 第二绝缘体形成壁至基板表面上方的预定高度,并且与第一电极的整个周边相邻。 该壁具有与基底压力连接的基部和与基部相对的顶部。 可偏转的第二电极以压紧连接的方式跨越壁顶制造,以在参考压力下包围第一和第二电极与壁之间的空腔; 相对于压力,壁的高度,第一和第二电极的形状以及所述第二电极的偏转特性都是预先选择的,以提供第一和第二电极之间的电容的预期关系和压力入射 在第二电极的与腔相对的表面上。
    • 47. 发明授权
    • System for encoding and decoding video signals
    • 视频信号编码和解码系统
    • US4533960A
    • 1985-08-06
    • US435792
    • 1982-10-21
    • Jerome J. TiemannScott E. CutlerKenneth B. Welles, II
    • Jerome J. TiemannScott E. CutlerKenneth B. Welles, II
    • H04N7/08H04N7/12H04N11/02H04N5/782H04N9/32
    • H04N7/12H04N11/02H04N7/0806
    • A system is described which makes use of the fact that in a raster scanned television system a high degree of correlation exists both in the luminance and in the chrominance signals of a pair of adjacent lines. Because of this correlation, the difference between the luminance signals of the two lines is usually much smaller than luminance signal of either line alone, and requires less bandwidth. The present invention takes advantage of the natural correlation in a television picture in the horizontal and vertical directions for bandwidth reduction without significant impairment of the reproduced picture. This is accomplished by processing the television signal for bandwidth reduction in particular ways and transmitting it entirely in the analog domain. The bandwidth requirement is reduced for the transmission of the video signals over a transmission channel such as a cable television channel, a broadcast channel or a storage medium.
    • 描述了一种系统,其利用在光栅扫描电视系统中在一对相邻线的亮度和色度信号中存在高度相关性的事实。 由于这种相关性,两行的亮度信号之间的差异通常远小于任一行的亮度信号,并且需要更少的带宽。 本发明利用电视图像在水平和垂直方向上的自然相关性,以减少带宽,而不会对再现的图像造成显着的损害。 这是通过以特定方式处理电视信号以实现带宽降低而实现的,并且在模拟域中完全发送它。 通过诸如有线电视频道,广播频道或存储介质的传输信道传输视频信号,带宽要求降低。
    • 48. 发明授权
    • Low loss wide band front end for NMR receiver
    • NMR接收机的低损耗宽带前端
    • US4450408A
    • 1984-05-22
    • US329791
    • 1981-12-11
    • Jerome J. Tiemann
    • Jerome J. Tiemann
    • A61B10/00A61B5/055G01R27/02G01R33/36H03H7/38G01R33/08
    • G01R33/3621H03H7/38G01R33/3628
    • An inductive element of a multipole impedance transforming bandpass network of classical design such as Butterworth or Chebyshev, for example, is employed as a pick-up coil for sensing NMR signals. The network matches the high input impedance of an NMR receiver preamplifier to the low impedance of the pick-up coil. Simultaneously, and as a consequence of the impedance matching, the high preamplifier input impedance appears as a band width broadening element at the pick-up coil. By virtue of the multipole design of transformer, a bandwidth broader than the natural bandwidth of the pick-up coil is obtained and the transfer of the energy of the detected NMR signal to the preamplifier is maximized.
    • 采用经典设计的多极阻抗变换带通网络(例如巴特沃斯或切比雪夫)的电感元件作为检测核磁共振信号的拾取线圈。 网络将NMR接收机前置放大器的高输入阻抗与拾波线圈的低阻抗匹配。 同时,作为阻抗匹配的结果,高的前置放大器输入阻抗在拾取线圈处呈现为带宽增宽元件。 凭借变压器的多极设计,获得比拾波线圈的自然带宽更宽的带宽,并将检测到的NMR信号的能量向前置放大器的传输最大化。
    • 49. 发明授权
    • Charge domain filter with single transmission zero
    • 带单个传输零点的电荷域滤波器
    • US4284908A
    • 1981-08-18
    • US153687
    • 1980-05-27
    • Jerome J. Tiemann
    • Jerome J. Tiemann
    • H01L27/105H03H15/02G11C19/28H01L29/78
    • H03H15/02H01L27/1057
    • A filter is described utilizing charge transfer devices for providing exponential smoothing of sampled data signals with a transmission zero at a predetermined frequency. A first shift register is provided having N serially coupled stages to each of which is coupled a respective accumulator stage. A second shift register is provided having N serially coupled stages. A sequence of packets of charge is provided, each packet representing a respective sample of an input signal. Each packet of the sequence is divided into a first part and a second part, the ratio of the first part to the second part being equal to a first fixed value. Each of the first parts of the packets of the sequence is applied to the first shift register and is sequentially processed in successive stages thereof to provide an output. Each of the second parts of the packets of the sequence is applied to the second shift register and transferred from stage to stage to provide another output. The frequency response of each of the stages of the first shift register with associated accumulator stage decreases with increase in frequency of the input signal, and the shift in phase of the frequency response increases with increase in frequency of the input signal. Each stage of the first shift register is set to provide a phase shift at a predetermined angular frequency .omega..sub.z which is equal to .omega. radians divided by N, the number of stages in the first shift registers. The aforementioned first fixed value is set so that the amplitude of the frequency response of the cascaded stages of the first shift register at the predetermined frequency .omega..sub.z is equal to the amplitude of the frequency response of second shift register at the frequency .omega..sub.z. The outputs of the first and second shift registers are combined thereby providing a resultant output in which the signal component of the frequency .omega..sub.z is zero.
    • 使用电荷转移装置描述滤波器,用于以预定频率提供具有传输零点的采样数据信号的指数平滑。 提供具有N个串联耦合的级的第一移位寄存器,其中每一个耦合到相应的累加器级。 提供具有N个串联耦合级的第二移位寄存器。 提供一组电荷分组,每个分组表示输入信号的相应样本。 序列的每个分组被分成第一部分和第二部分,第一部分与第二部分的比率等于第一固定值。 序列的分组的第一部分中的每一个被施加到第一移位寄存器,并且在其连续的阶段中被依次处理以提供输出。 序列的分组的第二部分中的每一个被施加到第二移位寄存器并从一个阶段传送到另一个输出。 具有相关联的累加器级的第一移位寄存器的每个级的频率响应随着输入信号的频率的增加而减小,并且频率响应的相位偏移随着输入信号的频率的增加而增加。 第一移位寄存器的每个级被设置为在预定的角频率ωz处提供等于ω弧度除以N的第一移位寄存器中的级数。 上述第一固定值被设置为使得在预定频率ωz处的第一移位寄存器的级联级的频率响应的幅度等于频率ωz处的第二移位寄存器的频率响应的幅度。 组合第一和第二移位寄存器的输出,从而提供其中频​​率ωz的信号分量为零的合成输出。