Patent ID: 8862921
Filing Date: 2014-10-14
Classification: G06F,H02J

Abstract:
1. An apparatus for remote wake-up during dedicated charging mode comprising: a USB transceiver port; a USB connector port; a switch network selectively coupling said USB transceiver port to said USB connector port; control logic coupled to said switch network and operative to control said switch network to disconnect said USB transceiver port from said USB connector port during a dedicated charger operational mode and to connect said USB transceiver port to said USB connector port upon detection of a potential remote wake-up condition to exit a sleep, standby or hibernate mode when a USB remote wake-up device is connected to said USB connector port; and signature detection circuitry between said USB connector port and said control logic to differentiate between USB devices to be charged and USB remote wake-up devices, said signature detection circuitry including a plurality of series connections of a comparator and a debouncer comprising