Patent · US Active

Selective quantization parameter transmission

US11297338B2 · kind B2 · utility

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24Claims

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Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Christian Helmrich · Erlangen, DE
Heiko Schwarz · Panketal, DE
Detlev Marpe · Berlin, DE
Thomas Wiegand · Berlin, DE
Adam WIECKOWSKI · Berlin, DE
Mischa Siekmann · Berlin, DE
Benjamin Bross · Berlin, DE

Key dates

Filing date	Aug 24, 2020
Grant date	Apr 5, 2022
Priority date	—
Expiry date	Aug 24, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/91
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A video encoder encodes a video into a data stream, the video encoder being configured to vary a granularity at which a Quantization Parameter—QP—is applied depending on an association of frames of the video to temporally hierarchical layers at which the video is encoded into the data stream. The technology also concerns a respective decoder, a respective method for encoding and decoding, and a computer program for implementing the methods.

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