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 41):
An audio driving circuit as claimed in  claim 40  wherein the analogue-to-digital conversion module comprises an analogue-to-digital converter (ADC) and an analogue gain element configured to apply analogue gain to the analogue feedback signal before the ADC, wherein the analogue gain element is configured to apply said analogue gain to so as to limit the input to the ADC to lie within a first predetermined voltage range that corresponds to a linear operating range of the ADC.

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): 0.725738240573852
- 35 USC 102 Novelty (BERT): 0.5048837393030292
- Combined Prediction Score: 0.7036527904467696
- Mean Citation Score: 241.336288
- Max Citation Score: 262.68985
- Similarity Product: 193.22658862645923

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