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公开(公告)号：US3662377A
公开(公告)日：1972-05-09
申请号：US3662377D
申请日：1970-04-30
Applicant: IBM
Inventor： DYM HERBERT , MAZZA ROBERT V , SEGAR LAWRENCE P
Abstract: An analog-to-digital converter that eliminates dynamic coupling errors in a system where the measured signal and the reference signal are subject to such variations. This device sequentially samples an analog unknown voltage and a reference voltage and converts the sampled signals into digital information representative of the unknown voltage. Sampling and conversion is achieved in a three step process which alternates the reference and unknown signal inputs to an integrator and level holding circuits. The integrator output controls the duration of a digital counter which runs until the integrator output crosses a zero value. The result in the digital counter provides the binary value representative of the analog unknown signal. Dynamic coupling errors which occur during the reference and unknown signal sample times are eliminated by dividing the sample time of the unknown signal in two segments, a first sampling segment prior to sampling the reference signal, and a second sampling segment after the reference signal.
Abstract translation: 一种模数转换器，消除了测量信号和参考信号受到这种变化的系统中的动态耦合误差。 该装置顺序采样模拟未知电压和参考电压，并将采样的信号转换成代表未知电压的数字信息。 采样和转换是通过将参考和未知信号输入交替到积分器和电平保持电路的三步骤过程来实现的。 积分器输出控制运行的数字计数器的持续时间，直到积分器输出跨越零值。 数字计数器的结果提供代表模拟未知信号的二进制值。 在参考和未知信号采样时间期间发生的动态耦合误差通过将未知信号的采样时间除以两个段，在对参考信号进行采样之前的第一采样段和参考信号之后的第二采样段来消除。
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Patent Agency Ranking
公开(公告)号：US3418481A
公开(公告)日：1968-12-24
申请号：US42146064
申请日：1964-12-28
Applicant: IBM
Inventor： HERBERT DYM , MAZZA ROBERT V
CPC classification number: G01J1/42 , G01N21/59 , G01N21/5911 , Y10T307/773
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公开(公告)号：US3593115A
公开(公告)日：1971-07-13
申请号：US3593115D
申请日：1969-09-10
Applicant: IBM
Inventor： DYM HERBERT , MAZZA ROBERT V
Abstract: A capacitive voltage divider arrangement for driving a position transducer. Individual ones of a first plurality of individual capacitor plates are respectively capacitively coupled to individual ones of a second like plurality of capacitance plate areas, the second plurality of capacitive areas being conductively connected together and varying in area from plate area to plate area. Individual ones of a third plurality of capacitance plate areas, which are conductively connected together, are likewise respectively capacitively coupled to individual ones of the first plurality of plates. The voltage distribution on a plurality of position sensing grid lines, individual ones of which are connected to respective individual ones of the first plurality of plates, varies in accordance with the varying in areas from plate area to plate area of the second plurality of plate areas.
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公开(公告)号：US3582962A
公开(公告)日：1971-06-01
申请号：US3582962D
申请日：1968-10-31
Applicant: IBM
Inventor： MAZZA ROBERT V
Abstract: A position measuring system of the writing tablet-stylus type employs a sampling control circuit which acts to sample tablet voltage in a manner to provide an output linearly representative of stylus position independent of the coupling admittance between the stylus and voltage carrying surface of the tablet. A first tablet voltage, which is a composite function of both the stylus position and the coupling admittance between the stylus and the voltage carrying surface of the tablet, is sampled and integrated over a set time interval. A second reference voltage, which is a function of only the coupling admittance, is integrated in time until it reaches the level of integration reached by the first integrated voltage. The time of integration of the second voltage is linearly related to stylus position independent of coupling admittance.
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公开(公告)号：US3055006A
公开(公告)日：1962-09-18
申请号：US8457061
申请日：1961-01-24
Applicant: IBM
Inventor： DREYFOOS JR ALEX W , MAZZA ROBERT V , RADKE WILLIAM A , STALEY ALAN A
CPC classification number: H04N5/82 , G03G5/022 , G03G15/18 , G03G16/00 , G11C13/048
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