Harmonic Inc.
Cable Television Equipment with UPS to Address Cable Service Interruptions Due to Short Power Interruptions

Abstract:

Cable television (CATV) equipment having a specialized Uninterruptible Power Supply (UPS). The CATV equipment comprises a coaxial cable power input, one or more Remote PHY (R-PHY) devices, a main power supply designed to supply an entirety of the CATV equipment with power continuously while there is AC power supplied to the CATV equipment over the coaxial cable power input, and an internal UPS for supplying power to either the entirety of the CATV equipment or a set of subcomponents thereof when the CATV equipment is not supplied power over the coaxial cable power input. An energy storage element of the internal UPS includes one or more capacitors but not a battery. The internal UPS adjusts how power is supplied in response to determining that a configurable amount of time has passed since the interruption in power to the CATV equipment.