PATENT CLAIM ANALYSIS

Application Number: 16051094
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["375", "240200"]

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 38):
One or more computer-readable memory devices storing compressed video data in a bit stream, the compressed video data being organized to facilitate decoding operations by a computer system that implements a video decoder, the decoding operations comprising:\n determining a quantization step size for a block of a video picture based on one or more syntax elements in the bit stream; receiving a variable length code (VLC) in the bit stream, wherein the VLC at least in part indicates a DC differential for a DC coefficient of the block of the video picture; determining that the VLC indicates an escape code in a VLC table, the escape code indicating presence in the bit stream of a fixed length code (FLC) for the DC differential, the VLC table also including different VLC values associated with different values for DC differentials; using the quantization step size to determine a length of the FLC for the DC differential in the bit stream, wherein the code length of the FLC varies depending on the quantization step size; receiving the FLC in the bit stream; decoding the FLC to determine a value for the DC differential; and reconstructing the DC coefficient using the value for the DC differential, wherein the DC differential represents a difference between the DC coefficient and a DC predictor.

Metadata:
- Claim Count in Document: 59.0
- Percentile: 95.0
- Lexical Diversity: 2.0
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12815029', '15068325', '10893168', '10893167', '10893166']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6269200674169648
- 35 USC 102 Novelty (BERT): 0.6293543314402199
- Combined Prediction Score: 0.6271634938192903
- Mean Citation Score: 497.526318
- Max Citation Score: 602.62274
- Similarity Product: 566.0791000075018

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