Prime Computer Inc.

Inline Connection Corporation

Robert H Domnitz

David D Goodman

Terry G Mahn

An audio/video transmission system for facilitating transmission of video, hi-fi audio, digital, and control signals (such as infrared remote control signals) between different locations in a residence using existing and active telephone wiring. Simultaneous transmission of signals of each type over active telephone lines is achieved without interference with telephone communications or with the other signal types. Transmission succeeds without requiring special treatment of the video signals beyond RF conversion, despite signal attenuation inherent in transmission over the telephone line media. The fidelity of audio reproduction at the receiving locations is sufficiently high to support the transmission of signals from digital devices without significant loss of audio quality. Multiple video sources and high fidelity audio sources may be tied into the system and selected as desired. Remote control signals generated in one room may be utilized to control video and audio sources in another room without requiring a clear line of sight between the remote control device and the receiver.

RF broadcast system utilizing internal telephone lines

A high speed switching circuit is disclosed in which two cascode circuits are coupled and operated in push-pull operation. The cascode circuits are clamped to avoid slowing down of the transistors due to saturation.

Growing community of inventors

Lexington, MA, United States of America

Robert H Domnitz