Audio encoding method and system for generating a unified bitstream decodable by decoders implementing different decoding protocols
US9378743B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 5, 2012 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Nov 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/167
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a class of embodiments, an audio encoding system (typically, a perceptual encoding system that is configured to generate a single (“unified”) bitstream that is compatible with (i.e., decodable by) a first decoder configured to decode audio data encoded in accordance with a first encoding protocol (e.g., the multichannel Dolby Digital Plus, or DD+, protocol) and a second decoder configured to decode audio data encoded in accordance with a second encoding protocol (e.g., the stereo AAC, HE AAC v1, or HE AAC v2 protocol). The unified bitstream can include both encoded data (e.g., bursts of data) decodable by the first decoder (and ignored by the second decoder) and encoded data (e.g., other bursts of data) decodable by the second decoder (and ignored by the first decoder). In effect, the second encoding format is hidden within the unified bitstream when the bitstream is decoded by the first decoder, and the first encoding format is hidden within the unified bitstream when the bitstream is decoded by the second decoder. The format of the unified bitstream generated in accordance with the invention may eliminate the need for transcoding elements throughout an entire media chain and/o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.