Methods and apparatuses for temporal synchronisation between the video bit stream and the output video sequence

US9131216B2 · kind B2 · utility

Assignee

• DEUTSCHE TELEKOM AG · DE

Inventors

• Savvas Argyropoulos · Berlin, DE
• Bernhard Feiten · Berlin, DE
• Marie-Neige Garcia · Berlin, DE
• Peter List · Bonn, DE
• Alexander Raake · Berlin, DE

Key dates

• Filing date: Jul 26, 2011
• Grant date: Sep 8, 2015
• Expiry date: Sep 6, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N21/44004
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A method for temporally synchronizing an input bit stream of a video decoder with a processed video sequence decoded by an external video decoder includes the steps of: capturing the input bit stream and supplying it to a bit stream analyzer; parsing and analyzing the captured input bit stream by the bit stream analyzer; decoding the input bit stream and providing reconstructed images Nrec therefrom; storing the reconstructed images Nrec in a buffer; and comparing a processed video sequence received from the output side of the video decoder with each of the stored reconstructed images, to find a matching frame n* from the reconstructed images in the buffer.