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Adaptive digital filter
According to one aspect of the present invention there is provided a digital filter comprising a plurality of delay stages through which an input signal is fed ...
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Control store apparatus having dual mode operation handling mechanism
A data processing system comprising a central processing unit and a storage device, which device includes a control store for storing a plurality of control words used ...
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Piezoelectric ultrasonic apparatus and method for determining the distance from a predetermined point to a target
The invention comprises apparatus and method for determining the distance from a preselected point to a target. The apparatus directs an ultrasonic signal from a ...
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Method and apparatus for generating data and analyzing the same to determine fluid depth in a well
OF THE PREFERRED EMBODIMENT OF THE INVENTION Indicated generally at 10 in FIG. 1 is apparatus constructed in accordance with the instant invention. Included therein is ...
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Apparatus for remote distance measurement
The present invention provides an apparatus for remote distance measurement in which the decay time of the transducer is variable and is therefore suitable for detecting ...
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Ultrasonic detector
The present invention relates to various aspects of ultrasonic detectors of the type that are used to determine the location of the liquid level within a tank or the ...
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Detector with ringdown frequency matching
The present invention is directed to an ultrasonic detector of the type that may be used to determine the level of a liquid within a tank or the magnitude of liquid flow ...
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Seismic data imaging system
Seismic exploration uses information in an attempt to determine the character of the ground without actually drilling into the ground. Many seismic exploration systems ...
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Logic cell which can be configured as a latch without static one's problem
According to the present invention, a logic cell is provided in which sequential functions may be generated. Under control of a clock signal, an output signal can be fed ...
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Automatic voltage doubler switch
What is claimed is: 1. An automatic voltage doubler circuit comprising: rectifying means coupled to an AC line and selectively operable in either a diect mode or in a ...
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