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    • 33. 发明授权
    • Apparatus and method for analysis of motion of a dynamic structure
    • 用于分析动态结构运动的装置和方法
    • US4295473A
    • 1981-10-20
    • US42247
    • 1979-05-24
    • George DiamondJames ForresterMichael HirschRan Vas
    • George DiamondJames ForresterMichael HirschRan Vas
    • A61B5/11G01H9/00
    • A61B5/1126A61B5/1128G01H9/00
    • An apparatus and method in which the amount of movement of a boundary in one or more dimensions on a dynamically movable structure or a series of sequential visual representations of said structure is measured. The boundary movement is measured by the degree of shiftable movement between light and dark areas. The motion may be analyzed and quantified in terms of linear motion or area change and an electrical analog of such motion is generated in format suitable for recordation by conventional reproducing or display mechanisms, as for example, a conventional chart recorder. In one embodiment, movement in one dimension, e.g. a linear dimension, is detected but not necessarily quantified. In another embodiment, the movement in the linear dimension is detected and measured so as to provide a quantification thereof. In a further embodiment the movement is measured in at least two dimensions to provide quantification of area changes. With suitable mathematical calculation, the area change with respect to an object of generally known shape can be converted for volume analysis. The apparatus comprises an electro-optical system including a plurality of photocells such as silicon photocells, and appropriate analog computation circuitry produces an electrical signal, as an analog of such dynamic motion, which when applied to a display screen, as for example a television tube, may display an ultrasonogram or a videofluoroscopic image.
    • 测量在一个或多个维度上的动态移动结构上的边界的移动量或所述结构的一系列连续视觉表示的装置和方法。 边界运动是通过明暗区域之间的可移动运动程度来测量的。 可以根据线性运动或面积变化来分析和量化运动,并且通过传统的再现或显示机构(例如常规的图表记录器)以适合于记录的格式产生这种运动的电模拟。 在一个实施例中,一维的运动,例如, 检测线性尺寸,但不一定量化。 在另一个实施例中,检测和测量线性尺寸的运动,以提供其定量。 在另一实施例中,以至少两个维度来测量运动以提供面积变化的量化。 通过适当的数学计算,相对于通常已知形状的对象的面积变化可以被转换用于体积分析。 该装置包括包括诸如硅光电池的多个光电池的电光系统,并且合适的模拟计算电路产生作为这种动态运动的模拟的电信号,当应用于显示屏时,例如电视管 ,可以显示超声波图像或视频荧光图像。
    • 35. 发明授权
    • Method and system for deleting data
    • 删除数据的方法和系统
    • US08862876B2
    • 2014-10-14
    • US12942445
    • 2010-11-09
    • Michael Hirsch
    • Michael Hirsch
    • G06F21/00G06F21/62G06F17/30G06F3/06G06F11/14
    • G06F21/62G06F3/0641G06F11/1453G06F17/3015G06F17/30156G06F2221/2143
    • A computer system having at least first and second documents, a plurality of decryption keys, and a plurality of data segments stored therein, is provided. Each of the plurality of data segments is decryptable by a selected one of the decryption keys. The decryption keys include a first set of decryption keys associated with the first document and not associated with the second document, a second set of decryption keys associated with the second document and not associated with the first document, and a third set of decryption keys associated with the first document and the second document. The first document is deleted, and in response, the first set of decryption keys is rendered unusable, and the second set of decryption keys and the third set of decryption keys are not rendered unusable.
    • 提供一种具有至少第一和第二文档,多个解密密钥以及存储在其中的多个数据段的计算机系统。 多个数据段中的每一个可由所选择的一个解密密钥解密。 解密密钥包括与第一文档相关联并且不与第二文档相关联的第一组解密密钥,与第二文档相关联并且不与第一文档相关联的第二组解密密钥,以及与第一文档相关联的第三组解密密钥 与第一个文件和第二个文件。 第一个文档被删除,并且作为响应,第一组解密密钥变得不可用,并且第二组解密密钥和第三组解密密钥不会变得不可用。