Stromberg-carlson Corporation

Adam A Jorgensen

Norman L Rose

Thomas F Lewis

A digital circuit for converting a delta modulated signal to a binary coded signal without producing an interim analog signal. The principal portions of the circuit are an up-down counter, a read-only memory the instantaneous output of which is controlled by the up-down counter, logic for driving the up-down counter in response to an incoming delta modulated signal, and a scanner for producing time-spaced pulses in response to the instantaneous outputs of the memory. A comparator is also included for driving the up-down counter relatively slowly to compensate for drift by ensuring that, over relatively long periods such as a few seconds, the output of the up-down counter oscillates around its mid-value.

All digital delta to PCM converter

A printed circuit card adapter for mounting on an elongated stud comprises a bar-like member having at least one surface area having a contour substantially conforming to the surface of the elongated stud upon which it is mounted. Guide means are disposed on the member for receiving an edge of a printed circuit board. The longitudinal axis of the guide means is disposed substantially parallel to the longitudinal axis of the member. An embodiment of the adapter employs a web to join together pairs of members to produce a strip comprising a plurality of adapters. Means are provided in the web for enabling one to readily divide the strip into one or more adapters as required.

Adapter for mounting printed circuit cards

An asynchronous, regenerative, digital repeater for use in bipolar digital signalling systems includes an amplifier for receiving and amplifying incoming signals, a first monostable multivibrator for producing regenerated pulses responsively to the output of the amplifier, an output circuit for producing a bipolar pulse train responsively to the output of the multivibrator, and a second multivibrator for inhibiting the first multivibrator for a predetermined interval following the trailing edge of each output pulse to prevent the first multivibrator from responding to the electrical overshoot at the trailing edges of the incoming pulses.

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Rochester, NY, United States of America

Adam A Jorgensen