Metadata transfer in audio video systems
US9769417B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Oct 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects relate to transmission of metadata from a source to a sink device, and optionally through one or more intermediaries. A source device encodes metadata into what would have been a blanking area of a field to be transmitted, according to a current video format. The source device encodes a timing for an active video data signal that is modified from a timing that would be used only for transmission of video data at a current resolution. A separate indicator from the source, or a negotiation between source and sink allows the sink to determine what part of the data indicated as being active video data is metadata, and to use that metadata for controlling aspects of the video display, and to use other parts of the received video data as video data for display. A sink can signal supported capabilities to a source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.