PATENT CLAIM ANALYSIS

Application Number: 16032469
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["375", "240290"]

Abstract:
An apparatus includes a filter circuit and an encoder. The filter circuit may be configured to (i) calculate a noise level of a frame of a video signal based on a subset less than all of a plurality of blocks of the frame, where each of the blocks in the subset may have an associated weighted activity to variance ratio that exceeds a threshold value and (ii) generate a filtered video signal based on the noise level. An estimated noise level of each of the blocks in the subset may be selected from one of (a) an activity of the block, (b) another activity of a reference block of another frame and (c) a sum of absolute pixel differences between the block and the reference block. The encoder may be configured to generate a bitstream by encoding the filtered video signal.

Claim (Index 9):
A method for filtering noise from a video signal, comprising the steps of:\n determining an individual activity value of each of a plurality of blocks of a frame of the video signal; determining an individual variance value of each of the blocks; determining a weighted activity to variance ratio of each of the blocks based on (i) the individual activity value and (ii) the individual variance value; determining a noise level of the frame based on estimated noise levels of the blocks having a weighted activity to variance ratio above a first threshold value; eliminating from the determination of the noise level of the frame each of the blocks having a collocated block in a next frame that has the weighted activity to variance ratio in excess of a second threshold value; and filtering the frame based on the noise level using a circuit.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 95.0
- Lexical Diversity: 2.30882
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11273304', '14151019', '12935757', '13234614', '10922084']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4668153162195058
- 35 USC 102 Novelty (BERT): 0.4632472478824439
- Combined Prediction Score: 0.4664585093857996
- Mean Citation Score: 160.34844400000003
- Max Citation Score: 171.53159
- Similarity Product: 137.7430316542542

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