Scalable encoder and decoder for scaled stream

US6980143B2 · kind B2 · utility

Assignee

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

Inventors

• Karsten Linzmeier · Nuremberg, DE
• Nikolaus Rettelbach · Nuremberg, DE
• Eric A. Allamanche · Nuremberg, DE
• Bernhard Grill · Lautenbächle, DE

Key dates

• Filing date: Dec 11, 2002
• Grant date: Dec 27, 2005
• Expiry date: Dec 11, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/66
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A scalable encoder having a first encoder, a decoder and a second encoder includes, above that, a phase distorter to reduce a non-linear frequency-dependent phase distortion introduced by the first encoder or by the decoder, which results in an increased difference signal of a comparator. Thus, a difference signal with less energy is obtained that the second encoder can encode with less bits, that is with a higher bit efficiency.