The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 07, 2026

Filed:

May. 09, 2024
Applicant:

Interdigital Ce Patent Holdings, Sas, Paris, FR;

Inventors:

Tangi Poirier, Thorigne-Fouillard, FR;

Fabrice Leleannec, Betton, FR;

Karam Naser, Mouazé, FR;

Edouard Francois, Bourg des Comptes, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 19/12 (2014.01); H04N 19/176 (2014.01); H04N 19/182 (2014.01);
U.S. Cl.
CPC ...
H04N 19/12 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11);
Abstract

A lossless coding mode is proposed in a video coding system comprising a plurality of coding tools, some being lossy by design, some of which can be adapted to become lossless or near lossless. To enable a lossless mode in such system, it is proposed to disable the tools that are lossy by design and use only lossless tools, to adapt some tools to enable lossless coding, and adapt some tools to enable near-lossless coding so that a secondary lossless coding may be applied after residual coding. In some embodiments, a type of residual coding is determined by, when an information indicates that a transform skip residual coding is used, obtaining a flag representative of a special mode, and when this flag is true, determine that regular residual coding must be used instead of the transform skip residual coding that should be used.


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