PATENT CLAIM ANALYSIS

Application Number: 15937995
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-08
Patent Classification: ["375", "240120"]

Abstract:
In a picture coding device, a significant coefficient information coding controller  706  and an arithmetic encoder  701  code significant difference coefficient information indicating that a difference coefficient value is not zero and significant for each of the difference coefficients in the partial region of the coding target. A difference coefficient value coding controller  707  and the arithmetic encoder  701  code difference coefficient values when significant difference coefficient information is significant for each of pixels in the partial region of the coding target. The significant coefficient information coding controller  706  decides a context for coding the significant difference coefficient information in the partial region of the coding target based on information indicating significance of the difference coefficient in the coded partial region.

Claim (Index 3):
A non-transitory computer-readable recording medium having embodied thereon a picture decoding program decoding a bitstream obtained by partitioning difference information between a picture serving as a decoding target and a picture serving as a prediction target into a plurality of sub blocks and coding partitioned sub blocks in a certain order, the program comprising:\n decoding significant sub block information indicating whether or not all values of difference coefficients belonging to a sub block serving as a decoding target are zero; decoding significant difference coefficient information indicating whether or not value of a difference coefficient is zero; decoding the value of the difference coefficient; and deriving a context for decoding the significant difference coefficient information of difference coefficient serving as the decoding target based on sum of horizontal position and vertical position of the difference coefficient in sub block serving as the decoding target, and at least one of (1) the significant sub block information of decoded sub blocks neighboring to the sub block serving as the decoding target, (2) the significant difference coefficient information of difference coefficients belonging to decoded sub blocks neighboring to the sub block serving as the decoding target, or (3) values of difference coefficients belonging to decoded sub blocks neighboring to the sub block serving as the decoding target, wherein, when a sum of a horizontal-direction position and a vertical-direction position of the difference coefficient serving as the decoding target is larger than a sum of a horizontal-direction position and a vertical-direction position of another difference coefficient belonging to the sub block serving as a decoding target, the deriving of a context derives a context having a value equal to or smaller than a context for decoding said other difference coefficient, and when a sum of a horizontal-direction position and a vertical-direction position of the difference coefficient serving as the decoding target is smaller than a sum of a horizontal-direction position and a vertical-direction position of another difference coefficient belonging to the sub block serving as a decoding target, the deriving of a context derives a context having a value equal to or larger than a context for decoding said other difference coefficient.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.71739
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15649766', '14478788', '15498098', '15860834', '15613902']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6122980935401896
- 35 USC 102 Novelty (BERT): 0.6349995382884461
- Combined Prediction Score: 0.6145682380150154
- Mean Citation Score: 555.6509440000002
- Max Citation Score: 589.5943
- Similarity Product: 583.9210258754491

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

Dataset: test