US 12143606

US patent 12143606, titled "Methods and apparatus for improved intra chroma encoding and decoding," has the following details:

• Assignee: InterDigital VC Holdings Inc.
• Inventors: Qian Xu, Yunfei Zheng, Xiaoan Lu, Peng Yin, Joel Sole.
• Filing Date: June 17, 2020.
• Issue Date: November 12, 2024.
• Abstract: Methods and apparatus are provided for improved chroma encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in a picture. Multiple partition types are supported for intra chroma coding of the block. The multiple partition types include a set of chroma partition types and a set of luma partition types. The set of chroma partition types are different than the set of luma partition types.

Here is a plain-language overview of each independent claim:

• Independent Claim 1 (Video encoding apparatus): This claim describes a video encoding apparatus that uses a memory and a processor. The apparatus encodes picture data for a block by performing "intra prediction" with multiple partition types for chroma encoding. These multiple partition types include a set of chroma partition types (16x16, 8x8, 4x4) and a set of luma partition types, where the chroma partition types are distinct from the luma partition types. A key aspect is determining a specific chroma partition type using a single chroma intra prediction mode that is different from a luma intra prediction mode. This determination is made in response to a luma partition type used for the block, and only the luma partition type is signaled, not the chroma partition type. The encoding process involves setting a luma partition, setting a chroma partition from the available chroma types, setting a luma prediction mode, and setting a chroma prediction mode (where chroma and luma modes are different), and then encoding the block.
• Independent Claim 2 (Method for video encoding): This claim describes a method for video encoding that mirrors the functionality of the apparatus in Claim 1. It involves encoding picture data for a block by performing intra prediction with multiple partition types for chroma encoding. The multiple partition types consist of chroma partition types (16x16, 8x8, 4x4) and luma partition types, with the chroma types being distinct from the luma types. A particular chroma partition type is determined using a single chroma intra prediction mode that is different from a luma intra prediction mode, in response to the luma partition type used for the block. Only the luma partition type is signaled. The method includes setting a luma partition, setting a chroma partition, setting a luma prediction mode, setting a chroma prediction mode (with differing chroma and luma modes), and encoding the block.
• Independent Claim 10 (Method for video decoding): This claim outlines a method for decoding picture data for a block. It involves performing intra prediction with multiple partition types for chroma decoding. The multiple partition types include chroma partition types (16x16, 8x8, 4x4) and luma partition types, where the chroma types are different from the luma types. A particular chroma partition type is determined using a single chroma intra prediction mode that is different from a luma intra prediction mode, in response to a luma partition type used to decode the block. Only the luma partition type is signaled. The decoding process includes parsing a luma partition, setting a chroma partition, parsing a luma prediction mode, parsing a chroma prediction mode (with differing chroma and luma modes), and decoding the block.
• Independent Claim 14 (Video decoding apparatus): This claim describes a video decoding apparatus with a memory and a processor. It operates on picture data for a block by performing intra prediction with multiple partition types for chroma decoding. The multiple partition types include chroma partition types (16x16, 8x8, 4x4) and luma partition types, where the chroma types are distinct from the luma types. A particular chroma partition type is determined using a single chroma intra prediction mode that is different from a luma intra prediction mode, in response to a luma partition type used to decode the block. Only the luma partition type is signaled. The decoding process comprises parsing a luma partition, setting a chroma partition, parsing a luma prediction mode, parsing a chroma prediction mode (with differing chroma and luma modes), and decoding the block.

Regarding CAFC 2026 dockets for patent 12143606, a specific search for this patent number in the CAFC 2026 dockets did not return any direct results. The CAFC dockets for May 2026 do not list any cases explicitly involving patent 12143606.