Patent ID: 6272194
Filing Date: 2001-08-07
Classification: H04L

Abstract:
An apparatus for detecting data in a bit stream, wherein said bit stream contains a sequence of frames, wherein each frame has a predetermined number of bits and comprises a sync pattern and a data portion, and wherein said apparatus comprises:a detecting circuit which detects a first data pattern in said bit stream that equals said sync pattern and detects a second data pattern in said bit stream that equals said sync pattern;a counting circuit operably coupled to said detecting circuit, wherein said counting circuit begins counting bits in said bit stream to generate a count value when said first data pattern is detected by said detection circuit; anda synchronization signal generating circuit operably connected to said counting circuit, wherein said synchronization signal generating circuit receives said count value from said counting circuit and compares said count value with a predetermined value when said second data pattern is detected by said detecting circuit,wherein said synchronization signal generating circuit outputs a synchronization signal when said count value and said predetermined value have a predetermined relationship.