PATENT CLAIM ANALYSIS

Application Number: 15742394
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["341", "120000"]

Abstract:
Representative implementations of devices and techniques provide gain calibration for analog to digital conversion of time-discrete analog inputs. An adjustable capacitance arrangement is used to reduce or eliminate gain error caused by capacitor mismatch within the ADC. For example, the capacitance arrangement may include an array of multiple switched capacitances arranged to track gain error during search algorithm operation.

Claim (Index 55):
The method of  claim 46 , further comprising determining a gain error cancellation weight using a calibration routine, comprising:\n coupling the SH capacitance to the reference voltage at the other node of the SH capacitance; coupling the first node to a bias voltage; coupling the DAC capacitance to ground at the other node of the DAC capacitance; disconnecting the SH capacitance from the reference voltage and the DAC capacitance from ground and setting the first node to a high impedance state after charging the SH capacitance with the reference voltage; coupling the SH capacitance to ground at the other node of the SH capacitance; coupling the DAC capacitance to the reference voltage at the other node of the DAC capacitance; comparing an injected voltage from the SH capacitance to an injected voltage from the DAC capacitance at the first node; placing a comparator coupled to the first node on a trip point of the comparator when the injected voltage from the SH capacitance and the injected voltage from the DAC capacitance are equal; and detecting a sign of a voltage magnitude deviation between the injected voltage from the SH capacitance and the injected voltage from the DAC capacitance, and adding or subtracting a capacitance from the calibration capacitance when the injected voltage from the SH capacitance and the injected voltage from the DAC capacitance are not equal.

Metadata:
- Claim Count in Document: 22.0
- Percentile: 86.0
- Lexical Diversity: 1.26
- Patent Class: 341.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14793118', '15742435', '14487166', '14732676', '13675387']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6111798259484801
- 35 USC 102 Novelty (BERT): 0.5557724209924308
- Combined Prediction Score: 0.6056390854528751
- Mean Citation Score: 306.551896
- Max Citation Score: 433.21707
- Similarity Product: 309.2820711905122

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