PATENT CLAIM ANALYSIS

Application Number: 15997442
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-10
Patent Classification: ["330", "296000"]

Abstract:
An audio reproduction apparatus is shown and includes an amplifier with a power amplification stage having transistors in a push-pull arrangement. A bias generator biases the transistors with a standing current. A processor receives a data stream comprising digital samples of an analog audio signal and analyzes the peak level of each group. It then determines the appropriate standing currents to maintain Class A operation of the power amplification stage given the peak levels of each of the groups. A digital to analog converter produces an analog input signal for the input stage of the amplifier from the data stream. A feedforward path between the processor and the bias generator allows the standing current to be adjusted prior to the arrival of the analog input signal in the power amplification stage.

Claim (Index 1):
A method of controlling a power amplification stage of an audio signal amplifier, comprising performing the following steps for successive groups of a plurality of contiguous digital samples of an analog audio signal received as a data stream:\n analyzing a peak level of the digital samples in a group; determining an appropriate standing current for the power amplification stage to maintain Class A operation given the peak level of the digital samples in the group; performing digital to analog conversion of the digital samples in the group to form an analog input signal for application to an input stage of the audio signal amplifier; adjusting the standing current in the power amplification stage to the previously determined appropriate standing current prior to the arrival of the analog input signal in the power amplification stage.

Metadata:
- Claim Count in Document: 37.0
- Percentile: 94.0
- Lexical Diversity: 2.01471
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15437587', '12826210', '15087630', '14049126', '15345885']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7620450640530377
- 35 USC 102 Novelty (BERT): 0.4900280140732407
- Combined Prediction Score: 0.734843359055058
- Mean Citation Score: 183.427448
- Max Citation Score: 276.23724
- Similarity Product: 272.5027259071612

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