PATENT CLAIM ANALYSIS

Application Number: 15953722
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["375", "240130"]

Abstract:
A scalable video signal decoding method, according to the present invention, determines a corresponding picture belonging to a lower layer used for an inter-layer prediction of a current picture belonging to an upper layer, performs the inter-layer prediction of the current picture by using the corresponding picture of the determined lower layer, restores the current picture by using a prediction sample acquired through the inter-layer prediction and a residual sample of the current picture, and selectively applies a loop filter to a tile boundary of the restored current picture on the basis of a layer filter flag for the upper layer.

Claim (Index 16):
A method for decoding a multi-layer video signal, the method comprising:\n obtaining a maximum temporal level identifier relating to a lower layer, the maximum temporal level identifier indicating a maximum temporal level identifier to which the inter-layer prediction of an upper layer is allowed, among temporal level identifiers of the lower layer; determining whether a corresponding picture of the lower layer is used as an inter-layer reference picture for a current picture of the upper layer by comparing the obtained maximum temporal level identifier with a temporal level identifier of the corresponding picture of the lower layer; performing inter-layer prediction of the current picture using the determined corresponding picture of the lower layer; reconstructing the current picture using a prediction sample obtained by the inter-layer prediction and a residual sample relating to the current picture; and applying a loop filter selectively to a tile boundary of the reconstructed current picture based a layer filter flag relating to the upper layer, wherein a tile alignment present flag is obtained from a bitstream when video usability information is presented in the bitstream, when the tile alignment present flag equals to 1, the tile alignment present flag indicates that a first restriction is applied, and when the tile alignment present flag equals to 0, the tile alignment present flag indicates that the first restriction may or may not be applied, wherein the first restriction is to restrict all pictures belonging to a video sequence to consist of a single tile, wherein when the tile alignment present flag equals to 0, the layer filter flag and a tile boundary alignment flag are obtained from the bitstream, when the layer filter flag equals to 1, the layer filter flag indicates that a second restriction is applied, and when the layer filter flag equals to 0, the layer filter flag indicates that the second restriction may or may not be applied, wherein the second restriction is to restrict the loop filter is not to be applied to a tile boundary of each picture belonging to the upper layer, wherein the tile boundary alignment flag indicates whether a third restriction is applied, and wherein the third restriction is to restrict i) two samples of a corresponding picture of the upper layer to belong to one tile when two samples of the current picture of the upper layer belong to one tile, and ii) the two samples of the corresponding picture of the lower layer to belong to different tiles when the two samples of the current picture of the upper layer belong to different tiles, wherein when the corresponding picture is used for inter-layer prediction of a current block of the current picture, both x and y components of a motion vector relating to the current block are derived equal to zero.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 91.0
- Lexical Diversity: 2.22917
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15029615', '15939011', '15030087', '15214543', '15214642']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5958364834224447
- 35 USC 102 Novelty (BERT): 0.5728087018575877
- Combined Prediction Score: 0.5935337052659589
- Mean Citation Score: 462.034674
- Max Citation Score: 463.4045
- Similarity Product: 448.46139572584633

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