PATENT CLAIM ANALYSIS

Application Number: 16101173
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["375", "240030"]

Abstract:
Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.

Claim (Index 37):
A computer system comprising:\n a buffer configured to receive encoded data in a bitstream, the encoded data including a variable length code (VLC) for a DC differential for a DC coefficient of a block of a picture, the DC differential representing a difference between the DC coefficient and a DC predictor for the DC coefficient of the block; and a decoder configured to decode the encoded data to reconstruct a picture by performing operations that include:\n determining a quantization step size that applies for the block based on one or more syntax elements in the bitstream; \n decoding the VLC using a VLC table, the VLC table including different VLC values, wherein the different VLC values are associated with different final absolute values for DC differentials if the quantization step size that applies for the block is large, and wherein the different VLC values are associated with different base absolute values for DC differentials if the quantization step size that applies for the block is small; \n determining that the quantization step size that applies for the block is small, the VLC indicating a base absolute value for the DC differential for the DC coefficient of the block; \n decoding a fixed length code (FLC) that indicates a refinement value for the DC differential for the DC coefficient of the block; and \n reconstructing the DC differential using the base absolute value, the refinement value, and a sign value.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 96.0
- Lexical Diversity: 2.0
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15068325', '12815029', '16051094', '10893168', '10893167']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6368763199804636
- 35 USC 102 Novelty (BERT): 0.6090589658880246
- Combined Prediction Score: 0.6340945845712196
- Mean Citation Score: 522.83606
- Max Citation Score: 578.2095
- Similarity Product: 505.5530714985431

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

Dataset: test