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 54):
An audio driving circuit comprising:\n a pre-distortion module operable to apply an adaptive non-linear distortion function to an input audio signal; an amplifier for amplifying the output of the pre-distortion module to provide an audio driving signal; a controller for adapting the non-linear distortion function applied based on a first error signal; and an error block configured to receive the input audio signal and a feedback signal of the voltage of the audio driving signal, to apply a first linear transfer function to the input audio signal or the feedback signal to at least partly compensate for a linear transfer function associated with the amplifier and to determine an error between the input audio signal and the feedback signal after the linear transfer function is applied as the first error signal.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 93.0
- Lexical Diversity: 2.3494
- Patent Class: 381.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15858173', '14707846', '15628057', '14787052', '15886103']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.702427007505869
- 35 USC 102 Novelty (BERT): 0.4970072124095753
- Combined Prediction Score: 0.6818850279962396
- Mean Citation Score: 241.336288
- Max Citation Score: 262.68985
- Similarity Product: 210.4973196729869

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