Frame sync across multiple channels
US9088406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Apr 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and devices synchronize data streams by hashing received data frames to generate a sequence of hash values, comparing the generated hash value sequence to a hash value sequence received in a control stream, and processing data frames when the hash value sequences match. A source device and multiple receiver devices may synchronize audio data encoded in data frames, applying a hash function to each data frame to generate a first sequence of hash values, transmitting the data frames on a first channel and the first sequence of hash values on a control channel, receiving the data frames and the first sequence of hash values in the receiver devices, applying the hash algorithm to received data frames to generate a second sequence of hash values, comparing the first and second sequences of hash values, and processing data frames when the first and second sequences of hash values match.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.