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Samsung patents video compression trick for color data

Samsung has filed a patent for a method to compress video files by combining the color information of two channels into a single data stream. The system uses specific weights to separate the combined data back into distinct color components during playback.

Why it mattersThis improves the efficiency of video streaming and storage, which could lead to slightly better quality at lower data rates for users.

In the filing’s own words

Proposed is a video decoding method including: determining a weight of a residual sample of a Cr component and a weight of a residual sample of a Cb component, based on a prediction type of a coding unit, cbf information for the Cr component, and cbf information of the Cb component, obtaining a chroma joint residual sample of a current block from a bitstream, reconstructing the residual sample of the Cr component by using the chroma joint residual sample of the current block and the weight of the residual sample of the Cr component, and reconstructing the residual sample of the Cb component by using the chroma joint residual sample of the current block and the weight of the residual sample of the Cb component.

What exactly they claim (claim 1)

1. A video decoding method comprising: when a prediction type of a current block is intra prediction mode, extracting chroma joint information based on one of a value of coded block flag (CBF) information for a Cr component and a value of CBF information for a Cb component being 1, wherein the chroma joint information indicates whether a chroma residual sample of a single block is encoded to represent a residual sample of the Cb component and a residual sample of the Cr component in the current block; when the prediction type of the current block is an inter prediction mode, obtaining the chroma joint information from a bitstream, based on the value of the CBF information for the Cr component being 1 and the value of the CBF information for the Cb component being 1; when the chroma joint information indicates that the chroma residual sample of the single block is encoded to represent the residual sample of the Cb component and the residual sample of the Cr component in the current block, determining a weight of the residual sample of the Cr component, obtaining, from the bitstream, a chroma residual sample of the current block; and reconstructing the residual sample of the Cr component by using the chroma residual sample of the current block and the weight of the residual sample of the Cr component, wherein a set of the weight of the residual sample of the Cr component and a weight of the residual sample of the Cb component is determined by a joint mode among a plurality of joint modes.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
VIDEO ENCODING AND DECODING METHOD FOR PREDICTING CHROMA COMPONENT, AND VIDEO ENCODING AND DECODING DEVICE FOR PREDICTING CHROMA COMPONENT
Publication number
US20260270402A1
Application number
19659761
Filed
Apr 27, 2026
Published
Sep 10, 2026
Inventors
8
Claims
3

Classified under

H04N 19/105 Electricity & electronicsH04N 19/132 Electricity & electronicsH04N 19/159 Electricity & electronicsH04N 19/176 Electricity & electronicsH04N 19/196 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.