PATENT CLAIM ANALYSIS

Application Number: 15901273
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["375", "240030"]

Abstract:
To allow a finer quantization control according to the property of an image within a macroblock, quantization parameter values are allowed to be changed in units of sub-blocks equal to or smaller than the macroblock in a similar manner as in motion compensation and orthogonal transform processes. A finer-tuned quantization control is performed, for example, by selecting fine and coarse quantization parameters respectively for corresponding sub-blocks if a plurality of images having different properties coexist within the macroblock.

Claim (Index 1):
A video decoding method for decoding a video encoded by a video encoding apparatus, the video decoding method comprising:\n obtaining quantization division information set in video encoding information; and performing inverse quantization for an orthogonal transform coefficient quantized for each of sub-blocks according to the obtained quantization division information in a block of a predetermined size to be processed, wherein\n the video encoding information has been generated by the video encoding apparatus by dividing each frame of a video into blocks of the predetermined size and by encoding blocks using a quantization parameter defined corresponding to the blocks of the predetermined size, wherein \n the video encoding apparatus configured to compress information of image data in a spatial direction and to quantize the orthogonal transform coefficient of the image data that is orthogonal-transformed, wherein \n the video encoding apparatus divides the blocks of the predetermined size into sub-blocks based on the quantization division information for dividing the blocks of the predetermined size into the sub-blocks of a size smaller than the predetermined size, each of which is quantized by using the quantization parameter according to an image property, quantizes the orthogonal transform coefficient by using a quantization parameter decided for each of the sub-blocks, and encodes the decided quantization parameter for each of the sub-blocks, \n each of the sub-blocks for which the quantization parameter is decided has a size equal to or larger than a block size that is a unit of processing in the orthogonal transform, \n the video encoding apparatus quantizes a difference of a quantization parameter, which is used to quantize the orthogonal transform coefficient, from a quantization parameter among quantization parameters of encoded neighboring blocks of the predetermined size or sub-blocks, \n the quantization parameter is an intermediate value of the quantization parameters of the encoded neighboring blocks of the predetermined size or sub-blocks, \n when a plurality of left blocks that are adjacent to a left end of the sub-block to be encoded are present and a plurality of upper blocks that are adjacent to an upper end of the sub-block to be encoded are present as an encoded block of the predetermined size or an encoded sub-block, a difference between an intermediate value between a quantization parameter of further upper block among the left blocks and a quantization parameter of further left block among the upper blocks, and a quantization parameter the sub-block to be encoded is encoded.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 1.40678
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14855813', '14855810', '12559978', '14855821', '14855804']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6280127429753851
- 35 USC 102 Novelty (BERT): 0.6352223939886585
- Combined Prediction Score: 0.6287337080767125
- Mean Citation Score: 593.383628
- Max Citation Score: 596.74207
- Similarity Product: 581.7125228796334

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