-- Worldwide set-top box revenue dropped 6% in 3Q09 from 2Q09, due to lower subscriber growth, a decrease in purchases of add-on STBs by subscribers with multiple televisions, and operators looking to replenish their inventories -- Motorola is the worldwide set-top box market share leader, followed by Cisco and Pace -- Worldwide revenue for all video infrastructure segments declined quarter-over-quarter, including VOD and streaming content servers, video encoders, IPTV middleware/content delivery platforms, video content protection software, edge QAMs, digital cable middleware, and satellite video middleware -- However, combined revenue for all video infrastructure segments is up 90% year-over-year, and quarterly growth is expected to pick up, led by VOD and streaming content servers, video encoders, and edge QAMs -- Worldwide revenue derived by service providers and cable companies for IPTV, cable video, and satellite video services is forecast to grow to $234 billion in 2013 -- The biggest threat to revenue growth will be online (or "over-the-top") viewing, which allows users to stream programming delivered over the Internet via sites like Hulu and YouTube, and to aggregate programming via services such as Boxee