PATENT CLAIM ANALYSIS

Application Number: 16178290
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["375", "240030"]

Abstract:
An image coding apparatus includes a block dividing unit configured to divide an input image into a plurality of blocks, a prediction unit configured to perform prediction based on coded pixels to generate prediction errors, a transformation unit configured to perform orthogonal transform to the prediction errors to generate transform coefficients, a quantization matrix generation unit configured to generate quantization matrices that are used to quantize the transform coefficients, a quantization matrix coding unit configured to calculate difference values by scanning the quantization matrices and to code the difference values, a quantization unit configured to generate quantization coefficients by quantizing the generated transform coefficients using the quantization matrices, and a coefficient coding unit configured to code the quantization coefficients, wherein the quantization matrix coding unit is configured to scan coefficients of the quantization matrices in a unidirectional manner to calculate the difference value.

Claim (Index 9):
An image decoding apparatus for decoding a bit stream, the image decoding apparatus comprising:\n an acquisition unit configured to acquire, from the bit stream, a difference value between elements included in a quantization matrix of n rows and n columns (n is an integer equal to or greater than 4); a derivation unit configured to derive a first element by adding a first difference value of a plurality of difference values acquired by the acquisition unit and a predetermined initial value and derive an (r-th)-element (r is an integer equal to or greater than 2) by adding an r-th difference value of the plurality of difference values and an (r\u22121)-th element, so as to derive a plurality of elements; and an association unit configured to associate the plurality of elements derived by the derivation unit with elements in the quantization matrix that can be expressed in a two-dimensional array, wherein in a case where the association unit associates a first predetermined element of the plurality of elements derived by the derivation unit with an element corresponding to a first row and a p-th column (p is an integer equal to or greater than 2 and smaller than n) of the quantization matrix, the association unit associates an element next to the first predetermined element derived by the derivation unit with an element corresponding to a (p+1)-th row and a first column of the quantization matrix, and wherein in a case where the association unit associates a second predetermined element of the plurality of elements derived by the derivation unit with an element corresponding to a (n\u22123)-th row and a n-th column of the quantization matrix, the association unit associates an element next to the second predetermined element derived by the derivation unit with an element corresponding to a n-th row and a (n\u22122)-th column of the quantization matrix.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 98.0
- Lexical Diversity: 2.55932
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16178001', '15360459', '16178209', '14356556', '13667881']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5481498389511099
- 35 USC 102 Novelty (BERT): 0.608692418523697
- Combined Prediction Score: 0.5542040969083687
- Mean Citation Score: 486.634906
- Max Citation Score: 535.3933
- Similarity Product: 499.6540474301933

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