Method and apparatus for synchronizing frames within a continuous stream of digital data
US5956377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1996 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | May 31, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0608
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus is disclosed for synchronizing frames in a continuous stream of digital data consisting of a plurality of master frames (M-bits long) containing data and a constant synchronization word and having an associated bit clock. The apparatus includes a FIFO buffer, a synchronization word register (containing the constant synchronization word) and a comparator operably connected to the FIFO buffer and the synchronization word register to generate a sync detect signal representing whether the portion of the continuous stream of data contained in the FIFO matches the constant synchronization word. The apparatus further includes a frame bit counter controlled by the sync detect signal and the associated bit clock, which generates a frame sync signal every M-bits, a counter connected to a first comparator that generates a sync achieved signal upon the counter output value equaling a first predetermined value and means for incrementing the counter upon coincidence of the sync detect and frame sync signals. The disclosure also discloses a method for synchronizing frames in a continuous stream of digital data while minimizing delay in processing the audio data in a radio communicati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.