System and method for processing object-based audiovisual information

US6079566A · kind A · utility

Assignees

• AT&T CORP. · US
• The Trustees of Columbia University in the City of New York · US

Inventors

• Alexandros Eleftheriadis · Tenafly, US
• Hari Kalva · Boca Raton, US
• Atul Puri · Redmond, US
• Robert Lewis Schmidt · Howell, US

Key dates

• Filing date: Apr 7, 1998
• Grant date: Jun 27, 2000
• Expiry date: Apr 7, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S707/99953
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

The invention provides a system and method for processing object-based audiovisual information which is capable of flexibly encoding, storing and accessing a variety of data objects. Audiovisual objects, illustratively prepared in MPEG-4 format, are stored onto physical media using file consisting of segments and access layer primary data units (PDUs), which are accessed using index information. The processes of encoding, storing and accessing audiovisual information are decoupled from monolithic storage in a strict linear order, and reordering and other editorial manipulations are possible.