Abstract: A programmable transversal filter employig two charge transfer delay lines one for sampling a reference function, the samples providing the weighting factors for the transversal filter; the other for sampling an input signal to the filter. Each sample of the input signal is then multiplied by the appropriate weighting factor obtained from the sampling of the reference signal and all products are summed to obtain a sample of the filter output.

Abstract: A range measurement system wherein range accuracies of fractions of a meter may be obtained. Nanosecond pulses, one triggered by the transmitter trigger with an appropriate delay and the other triggered by a received echo pulse, are launched from opposite ends of a transmission line. The location on the transmission line at which the two short pulses coalesce and the delay time of the transmitter triggered short pulse establish the range to the echoing object to an accuracy determined by the short pulse, pulse width.

Abstract: A digital processor for extracting data from a binary image in which the image is divided into an array of sample areas, each sample area containing an array of binary data spaces. Patterns formed by adjacent data spaces within the sample sample represent local line orientations from which the image characteristics are determined. Sample areas linearly arrayed in the direction in which the image is scanned are simultaneously processed to extract the line orientation information contained therein.

Abstract: An a.c. potentiometer wherein the gain of a variable gain circuit is controlled by a d.c. reference signal and a d.c. input signal, the gain being adjusted to be proportional to the ratio of the d.c. input signal to the d.c. reference signal. An a.c. reference is added to the d.c. reference. Since the gain of the circuit is equal for both a.c. and d.c. input voltages, the a.c. signal at the circuit a.c. output terminals is proportional to the a.c. reference signal and the ratio of the d.c. input signal to the d.c. reference signal which defines the gain. Desired electrical isolation of the a.c. circuitry from the d.c. circuitry is achieved by means of input and output coupling transformers for the a.c. signals.

Abstract: A cathode ray tube linear beam deflection system capable of operation over a wide range of beam deflection rates providing automatic power supply voltage switching to maintain linear operation and provide minimum power dissipation. Information for the automatic switching is obtained by continuously monitoring the yoke voltage, the power supply voltage being switched to a voltage of higher magnitude when the yoke voltage exceeds a predetermined level and returned to the power supply voltage of lower magnitude when the higher magnitude voltage is no longer required.

Abstract: An oscillating apparatus allowing for synchronization to an external sinusoidal source, and in which a unidirectional element is so located that the oscillating device may be replaced without the necessity of altering circuit elements to maintained synchronization and the desired nominal frequency of operation.

Abstract: An electrical connector, having a multiplicity of electrical conductors, in which pressure, to establish electrical contact between conductors, is generated by means of a single external force. Maintenance of adequate contact pressure, for all contacts, is determined by incorporating a single pressure sensing device which monitors the pressure applied to the contacts.