Not sure it is right to call Bridge Crossing LLC a patent troll. A significant portion of the funding for this came from ARM. The same was true for the Nortel patents acquired by Apple and Microsoft. Are they suddenly trolls?
British company Imagination bought MIPS engineers for 300k$ per each one, plus 80+ core MIPS patents. The remaining 500 patents were sold for 350M$ to another company that's pure IP aka patent trolls. http://www.zdnet.com/chip-designer-mips-acquired-for-60m-patents-sold-for-350m-7000006969/
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.