How to Wake up Cable TV Set-Top Boxes to Send Emergency Broadcast

摘要

Cable TV Set-top box is one of major home electronics which can receive public broadcast signals in an emergency situation. The set-top boxes stay in standby mode while not being used. In the standby mode, the set-top boxes cannot receive information broadcasted for emergency. To receive the emergency information, the set-top boxes in the standby mode should be transited to operation mode. WOL (Wake On LAN) based 2 step wakeup scheme can be applied to transfer Cable STBs from standby mode into operation mode.