PATENT CLAIM ANALYSIS

Application Number: 15755037
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["375", "240120"]

Abstract:
An intra prediction method according to the present invention comprises the steps of: acquiring information on a luma prediction mode of a current block and information on a chroma prediction mode of the current block from a bit stream; deriving a luma intra prediction mode of the current block on the basis of the information on the luma prediction mode; determining a chroma intra prediction mode of the current block on the basis of information on the luma intra prediction mode and the information on the chroma prediction mode; and generating a chroma prediction sample of the current block on the basis of the chroma intra prediction mode. According to the present invention, it is possible to reflect the difference between the ratio of the width to the height of a luma component and the ratio of the width to the height of a chroma component, and thus to more accurately perform intra prediction in units of samples and improve intra prediction performance.

Claim (Index 14):
The intra-prediction method according to  claim 13 , wherein the chroma intra-prediction mode is determined on the basis of the following equation, Intra \ue8a0 ( Mode C ) = { Mode Y , 0 \u2264 Mode Y \u2264 1 argmin m \u2208 M \ue89e { \uf603 HAng \ue89e ( Mode Y ) \u00d7 2 - HAng \ue8a0 ( m ) \uf604 } , 2 \u2264 Mode Y \u2264 17 argmin m \u2208 M \ue89e { \uf603 VAng \ue89e ( Mode Y ) \u00d7 0.5 - VAng \ue8a0 ( m ) \uf604 } , 18 \u2264 Mode Y \u2264 34 wherein Intra(Mode c ) indicates the chroma intra-prediction mode, Mode Y  indicates the luma intra-prediction mode, M indicates angular prediction modes #2 to #34, HAng(Mode) indicates a horizontal reference angle corresponding to an intra-prediction mode and VAng(Mode) indicates a vertical reference angle corresponding to an intra-prediction mode, wherein a horizontal reference angle corresponding to each intra-prediction mode represents a relative angle on the basis of an angle of 0\u00b0 corresponding to intra-prediction mode #10, and a vertical angle corresponding to each intra-prediction mode represents a relative angle on the basis of angle 0\u00b0 corresponding to intra-prediction mode #26.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 88.0
- Lexical Diversity: 3.16667
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14000900', '15389712', '15541802', '15790236', '14349992']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5688714449409112
- 35 USC 102 Novelty (BERT): 0.5256413809248278
- Combined Prediction Score: 0.5645484385393029
- Mean Citation Score: 337.899456
- Max Citation Score: 342.5106
- Similarity Product: 242.62736750113964

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test