Caption data delivery apparatus and methods
US9414111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Oct 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/84
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for efficiently and flexibly providing caption data (e.g., closed captioning) to subscribers of a content-based network, such as for example Internet protocol television (IPTV) subscribers. In one exemplary embodiment, the apparatus includes a server performing real-time extraction and encapsulation of caption data, transport of caption data to client devices over the network, and use of one or more applications running on the client devices to decode and display the caption data consistent with the multimedia (audio/video) content with which it is associated. In one variant, instant messaging (IM) infrastructure is used to authenticate clients and receive and display the caption data via a separate transport process. Server and client-side apparatus adapted for caption data receipt, decoding and display are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.