Application No. 16/874,037
`Reply to Office Action Dated August 4, 2021
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`AMENDMENTS TO THE CLAIMS
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`This listing of claims will replace all prior versions andlistings of claims in the
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`application.
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`Listing of Claims:
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`1.
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`(Currently Amended) An image decoder comprising:
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`circuitry; and
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`a memory coupledto the circuitry;
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`wherein the circuitry, in operation:
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`performs a first partitioning including usinga first partition mode, without parsingfirst
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`splitting information indicative of the first partition mode, to split a first block into a plurality of
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`second blocks, wherein the first block is one of a plurality of first blocks split from a picture;
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`determines whether a second block, whichis one ofthe plurality of second blocks,is
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`located adjacent to an edge of the picture and whether dimensions of the second blocksatisfy a
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`second condition;
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`performs a second partitioning on the second block by parsing secondsplitting
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`information indicative of a second partition mode and using the second partition modeto split
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`the second block into a plurality of coding units (CUs), wherein the second partition mode_(1)
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`prohibits a quad tree splitting of the second block in response to-a-determinatier that the second
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`block is located adjacent to the edge of the picture and that the dimensions of the second block
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`satisfy the second condition, and (11) allows the quad tree splitting of the second block in
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`response to that the second block is not located adjacent to the edge of the picture; and
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`decodesthe plurality of CUs.
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`2.
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`(Original) The image decoder of claim 1, wherein the circuitry uses the first partition
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`modeto split the first block in response to a first condition being satisfied.
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`

`

`Application No. 16/874,037
`Reply to Office Action Dated August 4, 2021
`
`3.
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`(Original) The image decoder of claim 2, wherein the circuitry uses the first partition
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`modeto split the first block in responseto that the first block is located adjacent to an edge of the
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`picture.
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`4.
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`(Original) The image decoder of claim 2, wherein the circuitry usesthe first partition
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`modeto split the first block in responseto that the first block has a rectangular shape.
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`5.
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`(Original)The image decoder of claim 2, wherein the circuitry uses the first partition
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`modeto split the first block in response to that dimensionsofthe first block satisfy the first
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`condition.
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`6.
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`(Original) The image decoder of claim 1, wherein thefirst partition mode allowsat
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`least one of a quadtree splitting and a binary splitting.
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`7.
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`(Original) The image decoder of claim 1, wherein the second partition mode
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`prohibits a quadtree splitting of the second block in responseto that the second block has a
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`rectangular shape.
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`8.
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`(Original) The image decoderof claim 1, wherein the second splitting information
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`indicative of the second partition mode does notincludea flag indicative of the quad tree
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`splitting.
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`9.
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`(Original) The image decoder of claim 1, wherein the second splitting information
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`indicative of the second partition mode includesat least one of a flag indicative of a binary tree
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`splitting and a flag indicative of a ternary tree splitting.
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`10.
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`(Original) The image decoderof claim 1, wherein the second splitting information
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`indicative of the second partition mode includes information indicative of a split direction.
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`

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`Application No. 16/874,037
`Reply to Office Action Dated August 4, 2021
`
`11.
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`(Original) The decoder of claim 10, wherein the secondsplitting information
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`indicative of the second partition modeindicates application of a binary tree splitting in a
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`horizontal direction to the second block located adjacent to a horizontal edge ofthe picture.
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`12.
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`(Currently Amended) An image decoder comprising:
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`an entropy decoder which, in operation, receives and decodesan encoded bitstream to
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`obtain quantized transform coefficients,
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`an inverse quantizer and transformer which, in operation, inverse quantizes the quantized
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`transform coefficients to obtain transform coefficients and inverse transform the transform
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`coefficients to obtain residuals,
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`an adder which, in operation, adds the residuals outputted from the inverse quantizer and
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`transformer and predictions outputted from a prediction controller to reconstruct blocks, and
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`the prediction controller coupled to an inter predictor, an intra predictor, and a memory,
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`wherein the inter predictor, in operation, generates a prediction of a current block based on a
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`reference block in a decoded reference picture; and the intra predictor, in operation, generates a
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`prediction of a current block based on a decoded reference block in a current picture, wherein the
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`prediction controller, the inter predictor, and the intra predictor form a predictor,
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`wherein the predictor, in operation,
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`performs a first partitioning including usinga first partition mode, without parsing first
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`splitting information indicative of the first partition mode, to split a first block into a plurality of
`
`second blocks, wherein the first block is one of a plurality of first blocks split from a picture;
`
`determines whether a second block, whichis one ofthe plurality of second blocks, is
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`located adjacent to an edge of the picture and whether dimensions of the second blocksatisfy a
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`second condition;
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`performs a second partitioning on the second block by parsing secondsplitting
`
`information indicative of a second partition mode and using the second partition modeto split
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`the second block into a plurality of coding units (CUs), wherein the second partition mode (1)
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`prohibits a quad tree splitting of the second block in response to-a-determinatier that the second
`
`block is located adjacent to the edge of the picture and that the dimensions of the second block
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`

`

`Application No. 16/874,037
`Reply to Office Action Dated August 4, 2021
`
`satisfy the second condition, and (11) allows the quadtree splitting of the second block in
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`response to that the second block is not located adjacent to the edge of the picture; and
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`decodesthe plurality of CUs.
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`13.
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`(Original) The image decoder of claim 12, wherein the predictor usesthefirst
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`partition modeto split the first block in response to that the first block is located adjacent to an
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`edge of the picture.
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`14.
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`(Original) The image decoder of claim 12, wherein the predictor usesthefirst
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`partition modeto split the first block in response to that the first block has a rectangular shape.
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`15.
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`(Original) The image decoder of claim 12, wherein the predictor usesthefirst
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`partition modeto split the first block in response to that dimensionsofthefirst block satisfy a
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`first condition.
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`16.
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`(Currently Amended) A decoding method comprising:
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`performinga first partitioning including usingafirst partition mode, without parsing first
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`splitting information indicative of the first partition mode, to split a first block into a plurality of
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`second blocks, wherein the first block is one ofa plurality of first blocks split from a picture;
`
`determining whether a second block, which is one ofthe plurality of second blocks,is
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`located adjacent to an edge of the picture and whether dimensions of the second blocksatisfy a
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`second condition;
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`performing a second partitioning on the second block by parsing secondsplitting
`
`information indicative of a second partition mode and using the second partition modeto split
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`the second block into a plurality of coding units (CUs), wherein the second partition mode (1)
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`prohibits a quad tree splitting of the second block in response to-a-determinatier that the second
`
`block is located adjacent to the edge of the picture and that the dimensions of the second block
`
`satisfy the second condition, and (11) allows the quad tree splitting of the second block in
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`response to that the second block is not located adjacent to the edge of the picture; and
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`decoding the plurality of CUs.
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`

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`Application No. 16/874,037
`Reply to Office Action Dated August 4, 2021
`
`17.
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`(Original) The method of claim 16, wherein the first partition modeis usedto split
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`the first block in response to that the first block is located adjacent to an edge ofthe picture.
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`18.
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`(Original) The method of claim 16, wherein the first partition modeis usedto split
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`the first block in response to that the first block has a rectangular shape.
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`19.
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`(Original) The method of claim 16, wherein the first partition modeallowsat least
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`one of a quadtree splitting and a binary splitting.
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`20.
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`(Original) The method of claim 16, wherein the second splitting information
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`indicative of the second partition mode includes information indicative of a split direction.
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