Data structure and methods for providing an interactive program guide
US6584153B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1999 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Apr 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data structure suited to efficiently representing a plurality of image streams including common and non-common portions. Specifically, a plurality of similar group of picture (GOP) data structures representing the corresponding plurality of image streams including common and non-common portions is adapted to provide a first encoded stream comprising only P-picture and B-picture access units of one of the similar GOP data structures, and a corresponding plurality of encoded streams comprising only respective I-picture access units of the similar GOP data structures. In this manner, the redundant P-picture and B-picture access units within the encoded streams are eliminated, thereby greatly reducing the bandwidth or memory resources needed to transmit or store the plurality of image streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.