1
Ronald Carter: Automated audio video messaging and answering system. Revolutionary Concepts, Tillman Wright PLLC, Chad D Tillman, James D Wright, March 20, 2007: US07193644 (82 worldwide citation)

The invention is an audio-video communication and answering system that synergistically improves communication between an exterior and an interior of a business or residence and a remote location, enables messages to be stored and accessed from both locally and remotely, and enables viewing, listeni ...


2
Ronald Carter: Automated audio video messaging and answering system. Dougherty Clements Hofer Bernard & Walker, December 29, 2005: US20050285934-A1

The invention is an audio-video communication and answering system, where system's properties make it particularly suitable as a Digital Video Messaging System for, amongst other things, answering the door. The elements of the system are a DVMS outside module that is a wireless pocket PC with a prox ...