Patent ID: 8234684
Filing Date: 2012-07-31
Classification: H04N

Abstract:
1. Apparatus comprising: a transceiver for communicating with a wireless network over one of a number of channels; and an Advanced Television Systems Committee (ATSC) signal detector for use in forming a supported channel list comprising those ones of the number of channels upon which an ATSC signal was not detected, wherein the ATSC signal detector is a threshold-based detector and detects an ATSC signal as a function of at least one threshold with respect to at least one of a carrier tracking loop lock signal, a symbol timing recovery lock signal and a synchronization (sync) lock signal, the ATSC signal detector including a state machine having at least an out of lock state, a check lock state, a lock state and a check out of lock state, wherein transitions between states are threshold-based and wherein the state machine can transition from the check lock state to the out of lock state without first transitioning through the lock or check out of lock states.