PATENT CLAIM ANALYSIS

Application Number: 16452842
Application Type: Utility
Filing Date: 2019-06
Publication Date: 2019-10
Patent Classification: ["382", "233000"]

Abstract:
The image coding method includes: determining a context in a current block in the image, from among a plurality of contexts; and performing arithmetic coding on the control parameter for the current block to generate a bitstream corresponding to the current block, wherein in the determining: the context is determined under a condition that control parameters of neighboring blocks of the current block are used, when the signal type is a first type, the neighboring blocks being a left block and an upper block of the current block; and the context is determined under a condition that the control parameter of the upper block is not used, when the signal type is a second type, and the second type is (i) “merge_flag”, (ii) “ref_idx_l0” or “ref_idx_l1”, (iii) “inter_pred_flag”, (iv) “mvd_l0” or “mvd_l1”, (v) “no_residual_data_flag”, (vi) “intra_chroma_pred_mode”, (vii) “cbf_luma”, and (viii) “cbf_cb” or “cbf_cr”.

Claim (Index 3):
A decoding apparatus for decoding a control parameter for controlling decoding of an image, the decoding apparatus comprising:\n a context determination unit configured to determine a context for a current block in the image, from among a plurality of contexts; and an arithmetic decoding unit configured to perform arithmetic decoding on a bitstream corresponding to the current block, using the determined context to obtain the control parameter for the current block, wherein the context determination unit is configured to: determine a signal type under which the control parameter for the current block is classified; determine the context by using both of decoded control parameters for a left block and an upper block, when the signal type is a first type, the left block being a neighboring block to the left of the current block, and the upper block being a neighboring block on top of the current block; and determine the context by using a predetermined fixed value, without using any of the decoded control parameters for the left block and the upper block, when the signal type is a second type different from the first type, wherein one of a split flag and a skip flag is classified under the first type, the split flag indicating whether or not the current block is partitioned into a plurality of blocks, and the skip flag indicating whether or not the current block is to be skipped, and wherein a difference parameter and a residual flag are classified under the second type, the difference parameter indicating a difference between a motion vector and a motion vector predictor of the current block, and the residual flag indicating whether or not luma coefficient data and chroma coefficient data are included in the current block, and wherein the context determination unit is configured to further: determine whether or not the decoded control parameter of the upper block is available in decoding, based on a position of the current block; and determine the context using the predetermined fixed value, when the decoded control parameter of the upper block is not available.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 100.0
- Lexical Diversity: 2.58442
- Patent Class: 382.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15330776', '13544061', '16179133', '14837546', '15797155']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5244495057577719
- 35 USC 102 Novelty (BERT): 0.6215110530482663
- Combined Prediction Score: 0.5341556604868214
- Mean Citation Score: 564.42538
- Max Citation Score: 567.6704
- Similarity Product: 544.3911040451048

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