Entropy coding

US8947273B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Christian Bartnik · Berlin, DE
• Benjamin Bross · Berlin, DE
• Valeri George · Berlin, DE
• Anastasia Henkel · Berlin, DE
• Tobias Hinz · Berlin, DE
• Heiner Kirchhoffer · Berlin, DE
• Detlev Marpe · Berlin, DE
• Tung Nguyen · Berlin, DE
• Matthias Preiss · Berlin, DE
• Thomas SCHIERL · Berlin, DE
• Heiko Schwarz · Panketal, DE
• Mischa Siekmann · Berlin, DE
• Jan Stegemann · Berlin, DE
• Thomas Wiegand · Berlin, DE

Key dates

• Filing date: Mar 31, 2014
• Grant date: Feb 3, 2015
• Expiry date: Mar 31, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M7/4006
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An encoder for encoding a sequence of symbols is described which has an assigner configured to assign a number of parameters to each symbol of the sequence of symbols based on information contained within previous symbols of the sequence of symbols; a plurality of entropy encoders each of which is configured to convert the symbols forwarded to the respective entropy encoder into a respective bitstream; and a selector configured to forward each symbol to a selected one of the plurality of entropy encoders, the selection depending on the number of parameters assigned to the respective symbol.