PATENT CLAIM ANALYSIS

Application Number: 16260570
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["375", "240160"]

Abstract:
Provided is an apparatus for decoding an image. The apparatus restores a plurality of sub-blocks by applying a scan pattern determined according to the intra prediction mode of the current block on the quantization coefficient sequence and restores the quantized transform block by applying a scan pattern determined according to the intra prediction mode of the current block on the plurality of sub-blocks. Therefore, it is possible to reduce the amount of coding bits and computing resources required to decode a current prediction block.

Claim (Index 1):
An apparatus for decoding an image, comprising:\n an entropy decoding unit configured to restore an intra prediction mode index, motion information and a quantization coefficient sequence; an inverse scanning unit configured to generate a quantized transform block by inversely scanning the quantized coefficient sequence in the unit of sub-block when a size of the quantized transform block is larger than a predetermined size; an inverse quantization unit configured to generate a quantization step size predictor, restore a quantization step size by adding the quantization step size predictor and a remaining quantization step size, and generate a transform block by inversely quantizing the quantized transform block using the quantization step size; an inverse transform unit configured to restore a residual block by inversely transforming the transform block; an intra prediction unit configured to restore an intra prediction mode of the current block based on the intra prediction mode index and generate a prediction block of the current block according to the intra prediction mode when the current block is coded in intra prediction mode; and an adding unit configured to generate an original block by adding the prediction block and the residual block, wherein, the inverse scanning unit restores a plurality of sub-blocks by applying a scan pattern determined according to the intra prediction mode of the current block on the quantization coefficient sequence, and restores the quantized transform block by applying a scan pattern determined according to the intra prediction mode of the current block on the plurality of sub-blocks, wherein the scan pattern for restoring the plurality of sub-blocks from the quantization coefficient sequence is the same as the scan pattern for restoring the quantized transform block from the plurality of sub-blocks, wherein, when a quantization step size of a left coding block of a current coding block and a quantization step size of an above coding block of the current coding block are unavailable, the inverse quantization unit determines a quantization step size of a previous coding block according to scan order as the quantization step size predictor of the current coding block.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 99.0
- Lexical Diversity: 1.91304
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15259784', '15259430', '15259343', '15259314', '15259708']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5659899940675976
- 35 USC 102 Novelty (BERT): 0.5536771467966369
- Combined Prediction Score: 0.5647587093405017
- Mean Citation Score: 407.96471
- Max Citation Score: 420.3689
- Similarity Product: 408.45710617132187

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

Dataset: test