PATENT CLAIM ANALYSIS

Application Number: 16218615
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["381", "055000"]

Abstract:
A class-D amplifier includes measurement of speaker current via the low-side drive transistors of the amplifier. In one embodiment, a class-D amplifier includes two high-side transistors, two low-side transistors, a first sense resistor, a second sense resistor, and a sigma delta analog to digital converter (ΣΔ ADC). The two high-side transistors and two low-side transistors are connected as a bridge to drive a bridge tied speaker. The first sense resistor is connected between a first of the low-side transistors and a low-side reference voltage. The second sense resistor is connected between a second of the low-side transistors and the low-side reference voltage. The ΣΔ ADC is coupled to the bridge to measure voltage across the first sense resistor and the second sense resistor.

Claim (Index 8):
The system of  claim 6 , wherein the first DAC and the second DAC are continually active while the bridge is driving the speaker.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.77551
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15395106', '15852132', '12835765', '13540454', '12861621']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.684392351195027
- 35 USC 102 Novelty (BERT): 0.5651578086317206
- Combined Prediction Score: 0.6724688969386964
- Mean Citation Score: 269.498832
- Max Citation Score: 477.0013
- Similarity Product: 298.4474864122987

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