Patent · US Active

Device and method for concealing an error

US7428684B2 · kind B2 · utility

2Cited by

8References

25Claims

0Family size

Assignee

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

Inventors

Daniel Homm · Nuremberg, DE
Ralph Sperschneider · Erlangen, DE

Key dates

Filing date	Oct 29, 2004
Grant date	Sep 23, 2008
Priority date	—
Expiry date	Sep 27, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/895
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A device for concealing an error in an erroneous or potentially erroneous information unit generates output values of a forward decoder and a backward decoder which differ and thus indicate an error-concealment area. The different values for one and the same information unit are examined with regard to a predetermined criterion so as to select that value which meets the predetermined criterion, i.e. which is plausible. Thus, an elimination or reduction of the continuation errors introduced in the decoding of blocks of reversible code words of variable lengths is achieved without impacting the compression rate.

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