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 11):
An audio signal amplification apparatus comprising:\n a power amplification stage having a first transistor and a second transistor in a push-pull arrangement; a bias generator connected with a control terminal of the first transistor and a control terminal of the second transistor, and configured to generate a standing current to bias the first transistor and the second transistor; a processor having an input configured to receive a data stream comprising digital samples of an analog audio signal, and which is configured to, for successive groups of contiguous digital samples received in the data stream, analyze a peak level of the digital samples in each of the groups and determine an appropriate standing current to maintain Class A operation of the power amplification stage given the peak level of the digital samples in each of the groups; a feedforward path between the processor and the bias generator; and a digital to analog converter to form an analog input signal for an input stage of the audio signal amplifier using the digital samples in each of the groups; wherein the processor is configured to adjust the standing current generated by the bias generator 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): 0.7614592394052968
- 35 USC 102 Novelty (BERT): 0.4942220414204027
- Combined Prediction Score: 0.7347355196068074
- Mean Citation Score: 183.427448
- Max Citation Score: 276.23724
- Similarity Product: 256.9122759467554

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