PATENT CLAIM ANALYSIS

Application Number: 15957737
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-10
Patent Classification: ["375", "320000"]

Abstract:
In a PAM-N receiver, sampler reference levels, DC offset and AFE gain may be jointly adapted to achieve optimal or near-optimal boundaries for the symbol decisions of the PAM-N signal. For reference level adaptation, the hamming distances between two consecutive data samples and their in-between edge sample are evaluated. Reference levels for symbol decisions are adjusted accordingly such that on a data transition, an edge sample has on average, equal hamming distance to its adjacent data samples. DC offset may be compensated to ensure detectable data transitions for reference level adaptation. AFE gains may be jointly adapted with sampler reference levels such that the difference between a reference level and a pre-determined target voltage is minimized.

Claim (Index 19):
A receiver circuit comprising:\n an analog front end to receive an analog input signal; an offset circuit to offset the analog input signal by an offset voltage to generate an offset analog input voltage; an amplifier to apply a gain to the offset analog input signal to generate an amplified offset analog input signal; an analog-to-digital converter to convert the amplified offset analog input signal to digital samples; a decoder to decode the digital samples to generate output symbols at output sample times based on comparisons between the digital samples and a plurality of reference voltage and to generate edge symbols at edge sample times between the output sample times; a reference level adaptation circuit to adjust the plurality of reference voltages based on the output symbols and the edge symbols; an offset control circuit to control the offset voltage applied by the offset circuit based on the plurality of reference voltages; and a gain control circuit to control the gain of the amplifier based on the plurality of reference voltages.

Metadata:
- Claim Count in Document: 34.0
- Percentile: 91.0
- Lexical Diversity: 1.75
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15528641', '10662872', '14158675', '10123370', '12624365']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4289251463192179
- 35 USC 102 Novelty (BERT): 0.5166201372696728
- Combined Prediction Score: 0.4376946454142634
- Mean Citation Score: 180.672866
- Max Citation Score: 301.12274
- Similarity Product: 233.14718031308297

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