PATENT CLAIM ANALYSIS

Application Number: 15933444
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["330", "010000"]

Abstract:
A signal amplifier includes a pulse width modulator, a level shifter, and a power amplifier. The pulse width modulator is driven by a positive power supply and a negative power supply, and a reference voltage of the pulse width modulator is set to a GND. The power amplifier is driven by a positive power supply, and a reference voltage of the power amplifier is set to a middle value between the positive power supply and the GND. The level shifter shifts a voltage level of a first PWM signal whose high level corresponds to the positive power supply of the pulse width modulator and whose low level corresponds to the negative power supply of the pulse width modulator, to a voltage level of a second PWM signal whose high level corresponds to the positive power supply of the power amplifier and whose low level corresponds to the GND.

Claim (Index 1):
A signal amplifier comprising:\n a signal input unit to which an analog input signal is input; a pulse width modulator that performs pulse width modulation on the analog input signal input to the signal input unit to convert the analog input signal into a first pulse width modulation (PWM) signal; a level shifter that shifts a voltage level of the first PWM signal output from the pulse width modulator to convert the first PWM signal into a second PWM signal; a power amplifier that performs power amplification on the second PWM signal output from the level shifter to generate an analog output signal from the second PWM signal; and a signal output unit that outputs the analog output signal, wherein the pulse width modulator is driven by a positive power supply and a negative power supply, and a reference voltage of the pulse width modulator is set to a ground (GND), the power amplifier is driven by the positive power supply, and a reference voltage of the power amplifier is set to a middle value between the positive power supply and the GND, and the level shifter shifts the voltage level of the first PWM signal whose high level corresponds to the positive power supply of the pulse width modulator and whose low level corresponds to the negative power supply of the pulse width modulator, to a voltage level of the second PWM signal whose high level corresponds to the positive power supply of the power amplifier and whose low level corresponds to the GND.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 4.02564
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15345926', '12850782', '15910774', '12660537', '12765697']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7675169585665325
- 35 USC 102 Novelty (BERT): 0.5114664853808683
- Combined Prediction Score: 0.7419119112479661
- Mean Citation Score: 273.729774
- Max Citation Score: 284.38
- Similarity Product: 229.8155251944065

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test