Patent ID: 8126089
Filing Date: 2012-02-28
Classification: H04J

Abstract:
1. A method of frame synchronization in a digital communication receiver, comprising: (a) inverting one of a reference frame alignment sequence (FAS) and a digital stream (DS) including a FAS to produce a respective one of an inverted FAS and an inverted DS; (b) multiplexing the inverted FAS or DS with its corresponding non-inverted FAS or DS to produce a multiplexed FAS or DS; (c) comparing the other one of the reference FAS and DS to the multiplexed FAS or DS to detect thereby the FAS within the DS, wherein said comparing is performed by a framer comprising a first input node for inputting the DS, a first output node for outputting a frame-synchronized DS to a data processor, a second input node for inputting the multiplexed inverted reference FAS and non-inverted reference FAS, and a second output node for outputting frame synchronization status data; and (d) using the detected FAS to synchronize frames within the DS.