Richard J Potetz

54815606, Jan 2, 1996

Apr 28, 1994

8/234315

Richard J. Potetz - West Granby CT
William B. Adamec - Natick MA

United Technologies Corporation - Hartford CT

H03K 708
H03K 908

375238

A digital-to-analog converter includes a digital-to-pulse width converter that converts a desired digital set-point value to a corresponding signal having a pulse width indicative of the desired set-point value. The desired set-point value is fed to a comparator which compares that value to the current count value from a counter that is counting up in ascending integer order. However, instead of presenting the counter output signal lines to the comparator in a normal conventional manner wherein the count value of the counter is presented to the comparator in the conventional ascending integer order, the current value of the counter is presented to the comparator in other than a conventional ascending order. The result is a comparator output signal that transitions more than one time between binary logic levels. This effectively increases the frequency of the comparator output signal.

52688470, Dec 7, 1993

Dec 17, 1990

7/628268

Richard J. Potetz - West Granby CT
Barry J. Male - West Granby CT

United Technologies Corporation - Hartford CT

G06F 102
G06G 716

364607

An apparatus and method for synthesizing waveforms includes digital circuitry (12) designed to provide a predetermined pulse train of data over a serial line (16), such that, when the pulse train is filtered, a synthesized waveform is produced which approaches an ideal analog waveform.