PATENT CLAIM ANALYSIS

Application Number: 15764685
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["375", "240120"]

Abstract:
An image decoding method according to the present invention comprises the steps of: deriving quantized transform coefficients by unit of sub-blocks in a transform unit on the basis of residual information included in a bitstream; deriving transform coefficients on the basis of the quantized transform coefficients; generating a residual sample on the basis of the transform coefficients; generating a prediction sample on the basis of an inter prediction or an intra prediction; and restoring an image on the basis of the residual sample and the prediction sample. According to the present invention, a quantity of data required for a residual signal can be reduced, and an overall coding efficiency can be improved.

Claim (Index 8):
The decoding method of  claim 1 , wherein the residual information includes the information indicating the non-zero quantization transform coefficients of the sub-block and flag information indicating whether the absolute values of all of the non-zero quantization transform coefficients in the sub-block are 1, and\n the deriving of the quantized transform coefficients by unit of sub-blocks includes, detecting whether the absolute values of the quantization transform coefficients are 0 sequentially on the basis of a specific scan order from the lower right position of the sub-block on the basis of the information indicating the non-zero quantization transform coefficients, and detecting whether the absolute values of all of the non-zero quantization transform coefficients in the sub-block are 1 on the basis of the flag information.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 90.0
- Lexical Diversity: 2.28302
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14140367', '13116716', '10487048', '15067747', '14003686']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5047715334252333
- 35 USC 102 Novelty (BERT): 0.519475330799142
- Combined Prediction Score: 0.5062419131626241
- Mean Citation Score: 298.830312
- Max Citation Score: 301.10278
- Similarity Product: 225.4259847202981

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test