This Dandy Gadget: Advanced Digital Broadcast is displaying its new Set-Top Box, ADB-4820C at CES 2009 which mounts behind flat TVs and requires no dedicated remote control.
Technically, ADB-4820C features a high-speed DOCSIS(R) return channel to support high-bandwidth two-way communications for Video on Demand (VoD), secure application download, and delivery of current and future generation advanced applications and services. The ADB-4820C supports HD and SD reception for MPEG-2, MPEG-4 (H.264) and SMPTE-421M (WM9-AP).
ADB-4820C has begun shipping some samples to Sony. And the commercialization will be decided later. [Dandy Gadget Source]