1
Rodney L Larson: Communication over power lines. Datran Systems Corporation, Schwegman Lundberg & Woessner, September 19, 1995: US05452344 (202 worldwide citation)

The present invention describes an FSK carrier communication systems for transmitting and receiving data on a electric utility line even in the presence of extreme noise. The present invention uses a unique FSK transmit and receive protocol to distinguish between noise and actual data. By careful se ...


2
Rodney L Larson, Donald L Meyer: Utility monitor communications systems. Datran Systems Corporation, Schwegman Lundberg and Woessner, January 10, 1995: US05381462 (109 worldwide citation)

A utility meter reading and communications system gathers data from utility meters and sends that data to a utility company's central data collection point (host computer) via phone lines. The system places a call on the user's telephone line at a specified time and date and transmits data using dua ...


3
Arthur J Winter, Rodney L Larson: Optical scanning reader system for loading computers. Databar Corporation, Peterson Wilks Nemer & Wamrath, October 29, 1985: US04550247 (15 worldwide citation)

Computer programs or other informational data are recorded on one or more sheets in the form of lines of optical bar code. At least one Control Array line containing characters which define the format for the program or other informational data to be transmitted to a specific digital computer is inc ...