Method and apparatus for scalable encoding and method and apparatus for scalable decoding

US7343287B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Ralf Geiger · Erlangen, DE
• Thomas Sporer · Ergolding, DE
• Karlheinz Brandenburg · Erlangen, DE
• Juergen Herre · Erlangen, DE
• Juergen Koller · Erlangen, DE
• Gerald Schuller · Erfurt, DE

Key dates

• Filing date: Aug 7, 2003
• Grant date: Mar 11, 2008
• Expiry date: Feb 15, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G10L19/24
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for scalable encoding a spectrum of a signal including audio and/or video information, with the spectrum comprising binary spectral values, includes a means for generating a first sub-scaling layer and a second sub-scaling layer in addition to a means for forming the encoded signal, with the means for forming being implemented so as to include the first sub-scaling layer and the second sub-scaling layer into the encoded signal that the first and the second sub-scaling layer are separately decodable from each other. In contrast to a full-scaling layer, a sub-scaling layer includes only the bits of a certain order of a part of the binary spectral values in the band, so that, by additionally decoding a sub-scaling layer, a more finely controllable and a more finely scalable precision gain may be achieved.