Engineering topics
Publications and source records attributed to Marchman, Robert H..
Proposed optoelectronic coupling circuit used to insert signal in transmission line and to isolate transmission line from ground of circuit in which signal originates. Made from commercially available components, reduces susceptibility to interference along transmission path.
Proposed digitally sampled scan-conversion scheme for color television reduces unwanted interactions between chrominance and luminance signals. New scheme reduces luminance and chrominance bandwidth to increase frequency separation between signals. To avoid proportionally reducing horizontal brightness resolution and horizontal color resolution, horizontal interlace of luminance signal and two color-difference signals used.