PATENT CLAIM ANALYSIS

Application Number: 15982666
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["330", "009000"]

Abstract:
Embodiments relate to a chopped amplifier system where a ripple reduction filter placed outside of a main signal path is disclosed. The chopped amplifier system includes a chopped amplifier having an input terminal and an output terminal, where the input terminal receives an input signal and the output terminal provides an output signal including a ripple that is based on an offset voltage of the chopped amplifier. The ripple reduction filter is placed in a feedback loop path that receives a portion of the chopped amplifier's output signal and provides a feedback signal to the chopped amplifier that reduces the ripple at the output of the chopped amplifier. The ripple reduction filter includes a digital controller and other circuits that can handle large disturbances such as large signal slew rate events and large common-mode steps without reducing the effectiveness of the ripple reduction filter in reducing the ripple.

Claim (Index 22):
A method comprising:\n receiving, at a ripple reduction filter, a common-mode input signal of a chopped amplifier, an output signal of the chopped amplifier comprising a ripple, the ripple based on an offset voltage of the chopped amplifier; receiving, at the ripple reduction filter, a differential output signal of the chopped amplifier, the ripple reduction filter processes the differential output signal to provide a feedback signal to the chopped amplifier for modifying the offset voltage of the chopped amplifier; determining whether a common-mode step is detected, the detection of the common-mode step determined by comparing the received common-mode input signal with a threshold common-mode signal; determining whether a slew rate event is detected, the detection of the slew rate event determined by comparing a slew rate of the received differential output signal with a threshold slew rate; and determining a mode of operation for the ripple reduction filter based on the determination whether the common-mode step is detected and on the determination whether the slew rate event is detected, the ripple reduction filter to provide the feedback signal to the chopped amplifier based on the determined mode of operation.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 2.44444
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15467417', '11340223', '12378204', '12144384', '15489187']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7347645162759132
- 35 USC 102 Novelty (BERT): 0.579157208411982
- Combined Prediction Score: 0.7192037854895201
- Mean Citation Score: 255.660868
- Max Citation Score: 450.4706
- Similarity Product: 425.5588252189637

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