Sharp-tuned filter-combiner for combining adjacent TV channels (US Patent 7224400)

Patent number: 7224400 Kind code: B2 Granted: 2007-05-29 Filed: 2001-04-05 Inventors: Robert J. Plonka (Quincy, IL, US) Assignees: Harris Corporation (Melbourne, FL, US)

Abstract

A filter-combiner for combining television signals from adjacent channels is presented herein. The combiner has two inputs that respectively receive an NTSC combined visual and aural signal and a DTV signal wherein the NTSC signal and the DTV signal are in adjacent channels. The DTV signal is of greater frequency than the NTSC