Abstract: An automated waveform analyzer for designing, on a computer, a logic implementation of an interface circuit connected between a first digital device and one or more other digital devices. The analyzer identifies from the remaining input and output waveforms those waveforms that, when logically combined together, construct the waveform of a selected output waveform in order to provide the proper logic and timing compatibility between the devices.

Abstract: An instrument for use on a marine vehicle including a sensor for determining the concentration of carbon monoxide (COC) present on the vehicle, an LED indicator for visually displaying the concentration, a microprocessor using a mathematical formula for calculating the health hazard to a person on the vehicle occasioned by the level of carbon monoxhemoglobin %COHb in the blood of that person resulting from breathing concentrations of carbon monoxide over a period of time. The instrument also determines for determining the health hazard condition in terms of long term exposure to a low COC level, moderate term exposure to a moderate COC level, and short term exposure to a high COC level, and in addition visually and audibly indicates the health hazard conditions. A method for the operating instrument, and a method of testing operativeness of the instrument are also provided.

Abstract: A system for calibrating vector corrected electrical measurements to adjust for distortion due to reactance in the measuring circuit, particularly that caused by variable positioning of a circuit element, such as probe or coupling. Initial error factors for directivity, source match, and frequency response, respectively, normally calculated from assumed reflection coefficients of respective primary impedance standards, are adjusted to correct for such reactance. Reflection coefficient measurements (magnitude and phase) of a further impedance standard, different from the primary standards, are obtained at multiple frequencies and corrected by the initial error factors. The corrected magnitude and phase measurements of the further impedance standard are compared with theoretical magnitude and phase values which very linearly with frequency, and the initial error factors are adjusted so as to minimize any deviation of the corrected measurements from the linear values.

Abstract: A system and method for protecting against redundant mailings compile mail listings associated with, for example, refund promotion requests received during a given period of time for a number of different refund promotions. Each listing in the compilation is compared on an automated basis with one or more other listings in the compilation according to one or more rules defining a first statistically significant event to identify suspicious listings. Listings in the compilation are also compared on an automated basis to listings previously identified as suspicious and may also be compared to listings associated with known abusers and complainers. Listings identified as suspicious are thereafter compared on an automated basis according to one or more different rules defining a second statistically significant event to identify redundant mailings.

Abstract: This invention is directed to a digital wavelength calibration system for a spectrophotometer, which includes a photodiode array that forms an output detector for the spectrophotometer, a light source for generating at least one reference emission line of known peak wavelength, a computer controlled mechanism for causing the peak of said reference line to fall in close proximity to the center of a preselected pixel of said photodiode array, peak location computing apparatus for computing the exact position data of the peak relative to the pixel center in terms of the pixel spacing and the ordinal number of the preselected pixel and for retaining this position data for subsequent wavelength computation, wavelength identification computing apparatus for computing the numerical relationship data of the ordinate number of each pixel to the wavelength falling on that pixel and for retaining this relationship data for subsequent correlation with data generated by the pixel, and apparatus for computational processin

Abstract: Apparatus and methods for photocomposing as, for example, phototypesetting utilize photographic film on a moving member such as a rotatable cylinder with an array of multitudinous light emitting diodes movable along the length of the cylinder to project to the film an image of graphic information to be recorded on the film. The array moves to scan the film with overlap between one scan and the next to merge images of one scan into images of the next scan with a minimum of discontinuity. Overlapping exposures from individual LEDs further increase sharpness of image and substantially eliminate variations from non-uniformities of the individual LEDs.