WHEN IT COMES TO consumer electronics of late, the digital set top box has been one of the hottest sellers worldwide. Strong demand from free-to-air satellite service, coupled with the expanding availability of digital cable TV and IPTV services, fueled a record-setting number of digital set top box unit shipments, says market research company In-Stat. Worldwide digital set top box unit shipments reached 143 million in 2007, up 18% over 2006. Satellite set top box unit shipments accounted for just over half of all global digital set top box unit shipments last year, while digital cable set top boxes made...