Patent · US Expired

Context-sensitive encoding and decoding of a video data stream

US8116373B2 · kind B2 · utility

11Cited by

12References

23Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gero Bäse · Birkenfeld, DE
Klaus Illgner-Fehns · Starnberg, DE
Robert Kutka · Geltendorf, DE
Jürgen Pandel · Feldkirchen-Westerham, DE

Key dates

Filing date	Feb 4, 2003
Grant date	Feb 14, 2012
Priority date	—
Expiry date	Dec 22, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/13
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Disclosed are methods and devices for compressing and decompressing video data streams, according to which the statistical relationship between image symbols and the context assigned thereto is used for compression. Particularly disclosed is a context-sensitive encoding unit in which the image symbols filed in an image storage are assigned to different encoding branches via a context switch, where they are encoded and compressed by a Golomb encoder and a run length encoder.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.