Method for correcting a quantized data value and associated device

US8363718B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Jens-Günter Bialkowski · Koblenzer Straße, DE
• André Kaup · Hohenkirchen, DE

Key dates

• Filing date: Jul 11, 2006
• Grant date: Jan 29, 2013
• Expiry date: Aug 27, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/40
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Where a quantized data value is produced by a first quantization of an input data value, followed by a first inverse quantization and subsequently by a second quantization and the first quantization has first quantization intervals and the second quantization has second quantization intervals, third quantization intervals are generated by displacing interval boundaries of the second quantization intervals, respectively, to the next interval boundaries of the first quantization intervals. A third reconstruction value is determined for the third quantization intervals such that the third reconstruction value lies within the associated third quantization intervals. A corrected data value is generated by a third inverse quantization of the quantized data value and the third inverse quantization is affirmed by the third quantization intervals containing the associated third reconstruction value.