1
Michael V Bartulis, Edwin J Smura, Richard P Dunn, Herbert B Bebb, Anthony J Ciuffini, Lionel W Mosing: Interactive user-machine interface method and apparatus for copier/duplicator. Xerox Corporation, Robert E Cunha, June 1, 1982: US04332464 (161 worldwide citation)

This patent describes a user interface device (UI device) used for machine control. The UI device is comprised of a video display capable of presenting desired images to the machine operator and a touch sensitive device capable of detecting operator requests by means of the operator touching the sur ...


2
Mark J Stefik, J Courtenay Heater: Ultrasound position input device. Xerox Corporation, Robert E Cunha, March 21, 1989: US04814552 (129 worldwide citation)

This invention is an input device, or stylus, for entering hand drawn forms into a computer comprising a writing instrument, a pressure switch for determining whether the instrument is in contact with the writing surface, an acoustic transmitter for triangulating the position of the stylus on the su ...


3
Joseph M Camarata: Baseband local area network using ordinary telephone wiring. Xerox Corporation, Robert E Cunha, January 15, 1991: US04985892 (99 worldwide citation)

A Local Area Network (LAN) is disclosed which enables a generalized data communication facility to be established over ordinary telephone wiring. The disclosed technique provides a completely general LAN architecture with any access protocol and is well suited to CSMA/CD (carrier sense, multiple acc ...


4
Abdul M Elhatem, Steven A Buhler: On chip heater element and temperature sensor. Xerox Corporation, Robert E Cunha, February 6, 1990: US04899180 (69 worldwide citation)

This bubblejet device has integrated into it a number of heater resistors and a temperature sensor which operate in conjunction with a temperature regulating circuit to heat the chip to its optimum operating temperature within seconds of turn-on, and thereafter maintain that temperature regardless o ...


5
Abdul M ElHatem, Steven A Buhler: On chip conductive fluid sensing circuit. Xerox Corporation, Robert E Cunha, August 1, 1989: US04853718 (66 worldwide citation)

The ink in an ink jet is sensed by a capacitor, one plate of which is coupled to ground through the ink. The absence of ink will appear as a decreased amount of capacitance. In this case the charge of the capacitor will leak off faster, and a sample and hold circuit can sense this to output a signal ...


6
Amitabh Saran: Data decompressor circuit. Xerox Corporation, Robert E Cunha, June 8, 1982: US04334246 (64 worldwide citation)

A circuit and method for decompressing video subsequent to its prior compression for transmission or storage. The circuit assumes that the original video generated by a raster input scanner was operated on by a two line one shot predictor, coded using run length encoding into code words of four, eig ...


7
Stanley G Froyd, Theodore R Wootton, Wai S Szeto: Computer numerically controlled threadcutting machine tool. McDonnell Douglas Corporation, Robert E Cunha, W J Jason, D L Royer, March 14, 1978: US04079235 (60 worldwide citation)

A computer numerical control system for controlling a lathe or similar machine tool in the cutting of threads. One computer is used as an interpolator to produce speed commands in real time for producing a smooth cutting tool motion. A second computer is used as an axis controller for receiving said ...


8
Jean Michel Guerin, Melvin E Swanberg: Multiple beam optical modulation system. Xerox Corporation, Robert E Cunha, October 5, 1993: US05251057 (49 worldwide citation)

In a raster output scanner, a system for using one original beam and one facet of a rotating polygon to generate two consecutive scan lines. The original beam is first separated into two beams in a beam splitter. The resultant beams are polarized ninety degrees apart, and directed to the modulator. ...


9
Stephen J Bespalko: Token editor architecture. Xerox Corporation, Robert E Cunha, June 29, 1993: US05224038 (48 worldwide citation)

A method of representing the text in a document in a way that enables very fast text processing on digital computers. More specifically, each word of text is represented as a number (or token) that refers to an information packet describing the word's characteristics. Operations then process each to ...


10
Vladimir Blatin: Algorithm for filling an image outline. Xerox Corporation, Robert E Cunha, March 21, 1989: US04815009 (46 worldwide citation)

A method of converting an outine defined by a plurality of vectors into an optimum set of trapezoids which can be filled in using standard printer techniques. The process is to determine all points in the outline where two vectors intersect, and the location of all scan lines that intersect these po ...