Since I've never encountered IVT before, I don't have anything witty to say about them. Instead, I'll just pull from this press release:
Interactive Video Technologies, IVT, the premier supplier of scalable software for webcasting, is pleased to announce our latest module for Digital Signage: MediaPlatform Television, or MPTV. MPTV is an optional module of MediaPlatform that gives clients the ability to create and manage "channels" of scheduled content for display on HDTVs or computer screens. These channels can be viewed on plasma screens at full screen and high resolution. Scheduled content can include playlists of content with set durations or at set times. Additionally MPTV includes the ability to preempt a channel with "urgent" content, messages or live video. Organizations wishing to deploy digital signage applications at corporate, retail, manufacturing or branch sites may want to tap into the expertise provided by a webcasting company with a uniquely long heritage, Interactive Video Technologies. With many years of experience and a feature rich, easy to use product, clients can rely on a system that is fully supported by a well-known organization. MPTV can be centrally managed and supported with screens at any location worldwide.So from what I can make of it, it's basically another Scala-model digital signage software package with a designer tool that builds out channels.