PATENT CLAIM ANALYSIS

Application Number: 15884535
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["375", "240180"]

Abstract:
Methods of encoding and decoding for video data are described in which multi-level significance maps are used in the encoding and decoding processes. The significant-coefficient flags that form the significance map are grouped into contiguous groups, and a significant-coefficient-group flag signifies for each group whether that group contains no non-zero significant-coefficient flags. If there are no non-zero significant-coefficient flags in the group, then the significant-coefficient-group flag is set to zero. The set of significant-coefficient-group flags is encoded in the bitstream. Any significant-coefficient flags that fall within a group that has a significant-coefficient-group flag that is non-zero are encoded in the bitstream, whereas significant-coefficient flags that fall within a group that has a significant-coefficient-group flag that is zero are not encoded in the bitstream.

Claim (Index 8):
An encoder for encoding an image to produce a bitstream of compressed image data, the encoder generating a transform unit from the image, the transform unit including transform coefficients, wherein the transform unit is represented by a significance map containing a significant-coefficient flag for each transform coefficient, and wherein the significance map is partitioned into a plurality of coefficient groups, each coefficient group having an associated significant-coefficient-group flag indicating whether its coefficient group contains at least one non-zero significant-coefficient flag, the encoder comprising:\n a processor; a memory; and an encoding application stored in memory and containing instructions, which when executed, cause the processor to, for one of the coefficient groups containing at least one non-zero significant-coefficient flag,\n determine, using rate-distortion optimized quantization, that said one of the coefficient groups is to be modified to contain all zero significant-coefficient flags; \n based on that determination, set all significant-coefficient flags in that coefficient group to zero and setting its significant-coefficient-group flag to zero; and \n entropy encode the significant-coefficient-group flags and, for any coefficient groups having an associated significant-coefficient group flag that is non-zero, entropy encode the significant-coefficient flags for those groups.

Metadata:
- Claim Count in Document: 37.0
- Percentile: 86.0
- Lexical Diversity: 2.38182
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13286336', '13446186', '15657719', '14621552', '13354437']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5627049090547457
- 35 USC 102 Novelty (BERT): 0.6058938867278508
- Combined Prediction Score: 0.5670238068220562
- Mean Citation Score: 513.0670419999999
- Max Citation Score: 564.5541
- Similarity Product: 467.27592062269446

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