PATENT CLAIM ANALYSIS

Application Number: 15939196
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["375", "240160"]

Abstract:
A scalable video signal decoding method according to the present invention is characterised in that whether or not a corresponding picture in a lower layer is being used as an inter layer reference picture for a current picture in an upper layer is determined on the basis of a time level identifier for the lower layer, and if the corresponding picture in the lower layer is being used as an inter layer reference picture for the current picture in the upper layer, inter layer prediction of the current picture is carried out using the corresponding picture, and the current picture is restored using a prediction sample obtained by means of inter layer prediction and a residual sample of the current picture.

Claim (Index 16):
A method for decoding a multi-layer video signal, the method comprising:\n determining a corresponding picture belonging to a lower layer to be used for inter-layer prediction of a current picture belonging to an upper 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 on a layer filter flag, wherein when video usability information is presented in a bitstream, a tile alignment present flag is obtained from a bitstream, the tile alignment present flag equal to 1 indicating that a first restriction is applied, the first restriction being that all pictures belonging to a video sequence consist of a single tile, the tile alignment present flag equal to 0 indicating that the first restriction may or may not be applied, wherein a layer tile enabled flag is obtained from the bitstream when the tile alignment present is equal to 0, the layer tile enabled flag equal to 1 indicating that a third restriction is applied, the third restriction being that all picture belonging to the upper layer consist of a plurality of tiles, the layer tile enabled flag equal to 0 indicating that the third restriction may or may not be applied, wherein a tile boundary alignment flag and the layer filter flag are obtained, based on the layer tile enabled flag, from the bitstream, the tile boundary alignment flag indicating whether a second restriction is applied, the second restriction being that when two samples of the current picture of the upper layer belong to one tile, two samples of the corresponding picture of the lower layer belong to one tile, and when the two samples of the current picture of the upper layer belong to different tiles, the two samples of the corresponding picture of the lower layer belong to different tiles, wherein the determined corresponding picture of the lower layer is a picture to which a 8-tap filter is applied for performing inter-layer prediction on the current picture and, wherein coefficients of the 8-tap filter include {0, 1, \u22123, 8, 62, \u22125, 2, \u22121}.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 2.35849
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15939011', '15030099', '15030087', '15214543', '15029615']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6260699952743072
- 35 USC 102 Novelty (BERT): 0.5866794575981225
- Combined Prediction Score: 0.6221309415066888
- Mean Citation Score: 486.906978
- Max Citation Score: 492.54733
- Similarity Product: 478.9241400573689

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