Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals

US6360200B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bernd Edler · Hannover, DE
• Hendrik Fuchs · Hildesheim, DE

Key dates

• Filing date: Apr 2, 1998
• Grant date: Mar 19, 2002
• Expiry date: Apr 2, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N5/602
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A redundance reduction method used in coding multichannel signals is proposed, where signals available in digitized form are predicted. A prediction error is computed, which is subsequently quantized and loaded for transmission over a transmission path. In the method, prediction is performed linearly in a backward-adaptive fashion for at least two channels simultaneously, and the statistical relationships of the signals within a channel and between at least two channels is taken into account. A device for decoding redundance-reduced multichannel signals is proposed. It comprises a linear backward-adaptive predictor for at least two channels.