PATENT CLAIM ANALYSIS

Application Number: 15988823
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["381", "120000"]

Abstract:
This application relates to methods and apparatus for amplification of audio signals with improved audio performance. An audio driving circuit ( 200 ) has an amplifier module ( 102 ) in a forward signal path between an input ( 103 ) for receiving an input audio signal (S IN ) and an output for outputting an audio driving signal (V OUT ). A pre-distortion module ( 202 ) is operable to apply a first transfer function to the signal in the forward signal path upstream of the amplifier module, wherein the first transfer function comprises a non-linear distortion function based on at least one distortion setting. An error block ( 203 ) is arranged to receive a first signal (S FF ) derived from the input signal and a second signal (S FB ) indicative of the voltage of the audio driving signal and determine a first error signal (ε 1 ) indicative of a difference between the first and second signals. The pre-distortion module ( 202 ) is operable to control the distortion setting(s) based on the first error signal.

Claim (Index 50):
An audio apparatus as claimed in  claim 49  wherein the output of the audio driving circuit is coupled to an output audio path that comprises at least one non-linear component wherein said second signal indicative of the voltage of the audio driving signal is derived from the output audio path downstream of the at least one non-linear component.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 93.0
- Lexical Diversity: 2.3494
- Patent Class: 381.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15858173', '14707846', '15628057', '14787052', '15886103']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7252307712135141
- 35 USC 102 Novelty (BERT): 0.5079349148955615
- Combined Prediction Score: 0.7035011855817188
- Mean Citation Score: 241.336288
- Max Citation Score: 262.68985
- Similarity Product: 183.7793016156405

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

Dataset: test