Method and apparatus for data recovery
US6901127B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2000 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Apr 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for recovering data by a digital audio interface, where the data may be transmitted over a single transmission path in accordance with the AES3-1992 standard, begins by receiving a stream of biphase encoded data. The biphase encoded data is organized as a series of data block that each include a plurality of frames. The processing continues by determining whether a next transition of a frame of the plurality of frames occurs during a first, second, or third time window after a preceding transition of the frame. When the next transition occurs during the second predetermined time, the digital audio interface synchronizes to a data rate of the stream of biphase encoded data based on the next transition and the preceding transition. In other words, the transitions of the data within the frame are occurring at the data rate. (Note that biphase encoding encodes a logic zero as no transition during a clock interval, encodes a logic one as a transition during a clock interval, and provides a transition at the next clock interval to indicate a new bit). If, the next transition occurs during the first or third predetermined windows, the digital audio interface synchro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.