PATENT CLAIM ANALYSIS

Application Number: 15886103
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["330", "251000"]

Abstract:
This application relates to Class D amplifier circuits ( 200 ). A modulator ( 201 ) controls a Class D output stage ( 202 ) based on a modulator input signal (Dm) to generate an output signal (Vout) which is representative of an input signal (Din). An error block ( 205 ), which may comprise an ADC ( 207 ), generates an error signal (ϵ) from the output signal and the input signal. In various embodiments the extent to which the error signal (ϵ) contributes to the modulator input signal (Dm) is variable based on an indication of the amplitude of the input signal (Din). The error signal may be received at a first input ( 204 ) of a signal selector block ( 203 ). The input signal may be received at a second input ( 206 ) of the signal selector block ( 203 ). The signal selector block may be operable in first and second modes of operation, wherein in the first mode the modulator input signal is based at least in part on the error signal; and in the second mode the modulator input signal is based on the digital input signal and is independent of the error signal. The error signal can be used to reduce distortion at high signal levels but is not used at low signal levels and so the noise floor at low signal levels does not depend on the component of the error block ( 205 ).

Claim (Index 29):
The Class D amplifier circuit as claimed in  claim 28  wherein said signal selection controller is configured to control the at least one variable gain element to provide a controlled transition in gain between said first and second gain settings that involves at least one intermediate gain setting.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 88.0
- Lexical Diversity: 2.98901
- Patent Class: 330.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14836006', '15466661', '14521191', '15278862', '15726584']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8159491927213902
- 35 USC 102 Novelty (BERT): 0.5378519704387161
- Combined Prediction Score: 0.7881394704931228
- Mean Citation Score: 293.744824
- Max Citation Score: 372.258
- Similarity Product: 316.68055398845667

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