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    • 92. 发明授权
    • Electroimpedance tomograph with common-mode signal suppression
    • 具有共模信号抑制的电阻断层扫描
    • US07941210B2
    • 2011-05-10
    • US11427516
    • 2006-06-29
    • Hans MatthiessenDieter WeismannJianhua LiYvo GärberArndt PöcherMarkus Steeger
    • Hans MatthiessenDieter WeismannJianhua LiYvo GärberArndt PöcherMarkus Steeger
    • A61B5/05G01R27/00G01R27/08
    • A61B5/0536A61B5/0809H03F3/45475H03F3/45928H03F2200/261H03F2203/45138
    • An electroimpedance tomograph with a plurality of electrodes (1) is provided, which can be placed on the body of a patient and are connected via a selector switch (60) with a control and evaluating unit (20). The control and evaluating unit (20) cooperates with the selector switch (60) such that two electrodes each are supplied with an alternating current from an AC power source (22) and the detected analog voltage signals of the other electrodes are processed in order to reconstruct therefrom the impedance distribution of the body in the plane of the electrodes, wherein a symmetrical AC power source is used to reduce common-mode signals. To further suppress interferences due to common-mode signals, provisions are made for the control and evaluating unit (20) to be set up, furthermore, for detuning the common-mode signal of the alternating current on the body against the ground by means of a common-mode signal measuring electrode (4) and, based on this, the symmetry of the symmetrical AC power source such that the common-mode signal on the body is minimized, and the corresponding detuning parameters are stored for each electrode pair.
    • 提供具有多个电极(1)的电阻抗断层摄影机,其可以放置在患者体上,并经由选择器开关(60)与控制和评估单元(20)连接。 控制和评估单元(20)与选择器开关(60)配合使得两个电极各自被提供有来自AC电源(22)的交流电,并且处理其它电极的检测到的模拟电压信号,以便 从而重建在电极的平面中的主体的阻抗分布,其中使用对称的AC电源来减少共模信号。 为了进一步抑制由于共模信号引起的干扰,为控制和评估单元(20)进行设置,此外,为了使身体上的交流电的共模信号与地面相互抵消,借助于 共模信号测量电极(4),并且基于此,对称AC电源的对称性使得主体上的共模信号最小化,并且针对每个电极对存储相应的失谐参数。
    • 97. 发明申请
    • INDICIA READING TERMINAL PROCESSING PLURALITY OF FRAMES OF IMAGE DATA RESPONSIVELY TO TRIGGER SIGNAL ACTIVATION
    • INDICIA读取终端处理图像数据帧的多项式响应于触发信号激活
    • US20090026267A1
    • 2009-01-29
    • US12132462
    • 2008-06-03
    • Ynjiun P. WangEdward C. BremerChen FengColleen P. GannonWilliam H. HavensJianhua LiTimothy P. Meier
    • Ynjiun P. WangEdward C. BremerChen FengColleen P. GannonWilliam H. HavensJianhua LiTimothy P. Meier
    • G06K7/00G06K7/10
    • G06K7/10722G06K7/10G06K7/10732G06K7/1096G06K7/14G06K7/1465H04N1/00331H04N1/00334
    • There is described a decodable indicia reading terminal which in one embodiment can capture and process a certain (e.g., a first) and a subsequent (e.g., a second) frame of image data, wherein the certain and the subsequent frames have different imaging attributes. In one embodiment the attributes between certain and subsequent frames are differentiated in that the certain frame represents light incident on pixels of a first image sensor and the subsequent frame of image data represents light incident on pixels of a second image sensor spaced apart from the first image sensor. Additionally, or in the alternative, the attributes between certain and subsequent frames can be differentiated in that the first frame represents light incident on an image sensor under a first illumination profile and the subsequent frame represents light incident on pixels of an image sensor under a second illumination profile. In one embodiment imaging attributes of a frame subject to decoding are maintained constant for each frame subject to processing during a time that a trigger signal remains active. In one embodiment the certain and subsequent frames can be processed to yield partial decoding results and the partial decoding results can be combined to form a complete decoding result.
    • 描述了可解码的标记读取终端,其在一个实施例中可以捕获和处理图像数据的某个(例如,第一)和后续(例如,第二)帧,其中特定和后续帧具有不同的成像属性。 在一个实施例中,区分特定帧和后续帧之间的属性,因为特定帧表示入射到第一图像传感器的像素上的光,并且后续帧的图像数据表示入射到与第一图像间隔开的第二图像传感器的像素上的光 传感器。 另外,或者替代地,可以区分某些帧和后续帧之间的属性,因为第一帧表示在第一照明轮廓下入射到图像传感器上的光,并且后续帧表示在第二个像素下的入射到图像传感器的像素上的光 照明轮廓。 在一个实施例中,经过解码的帧的成像属性在触发信号保持活动的时间内被处理的每个帧保持恒定。 在一个实施例中,可以处理某些和后续帧以产生部分解码结果,并且可以组合部分解码结果以形成完整的解码结果。
    • 99. 发明授权
    • Electroimpedance tomograph with common-mode signal suppression
    • 具有共模信号抑制的电阻断层扫描
    • US07288943B2
    • 2007-10-30
    • US11419318
    • 2006-05-19
    • Hans MatthiessenDieter WeismannJianhua LiYvo Gärber
    • Hans MatthiessenDieter WeismannJianhua LiYvo Gärber
    • G01R27/04G01R27/08A61B5/04A61B5/05
    • A61B5/0536
    • An electroimpedance tomograph is provided with a plurality of electrodes (1), which can be placed on the body of a patient and are connected to a control and evaluating unit (20) via a selector switch (60). The control and evaluating unit (20) cooperates with the selector switch (60) such that two electrodes each are supplied with alternating current from an AC power source (22). The detected analog voltage signals of the other electrodes are sent into the control and evaluating unit (20) via a measuring amplifier (62) and AD converter (64) and are processed there in order to reconstruct the impedance distribution of the body in the plane of the electrodes therefrom. A symmetrical AC power source (22) is used to reduce common-mode signals. To make it possible to suppress errors due to common-mode signals, provisions are made for the control and evaluating unit (20) to be set up for making available an additional common-mode signal at an output during an adjusting mode of operation and to send it to the body via common-mode signal electrodes (4, 90) that can be placed on the body. The control and evaluating unit (20) is prepared, furthermore, to adjust the measuring amplifier (62) according to value and phase for each electrode pair connected by the selector switch (60) such that the common-mode signal at the output of the measuring amplifier (62) is minimized, and the adjusted parameters are stored for each electrode pair.
    • 电阻断层摄影机设置有多个电极(1),其可以放置在患者的身体上,并且经由选择器开关(60)连接到控制和评估单元(20)。 控制和评估单元(20)与选择器开关(60)配合,使得两个电极各自由AC电源(22)提供交流电。 检测出的其他电极的模拟电压信号通过测量放大器(62)和AD转换器(64)发送到控制和评估单元(20),并在那里进行处理,以便重建在平面内的主体的阻抗分布 的电极。 使用对称的交流电源(22)来减少共模信号。 为了能够抑制由于共模信号引起的误差,为了使控制和评估单元(20)被设置成在调节操作模式期间在输出端提供额外的共模信号,并且 通过可以放置在身体上的共模信号电极(4,90)将其发送到身体。 此外,准备控制和评估单元(20)根据由选择器开关(60)连接的每个电极对的值和相位来调节测量放大器(62),使得在输出端的共模信号 测量放大器(62)被最小化,并且为每个电极对存储调整的参数。