PATENT CLAIM ANALYSIS

Application Number: 15908418
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["375", "258000"]

Abstract:
Various techniques are described to terminate a differential wire pair using combinations of CMCs, transformers, autotransformers, differential mode chokes (DMCs), and AC-coupling capacitors. The techniques improve the AC common mode insertion loss without attenuating the differential data signals, while easing the requirements of the CMC. In one example, an autotransformer, having a first winding, a second winding, and a center tap, is connected across a PHY, where the center tap provides a low impedance to ground for attenuating common mode noise. A CMC is coupled across the autotransformer and a pair of wires carrying differential data, where the CMC greatly attenuates common mode noise. The requirements of the CMC are reduced due to the autotransformer.

Claim (Index 18):
A communications system comprising:\n a wire pair; a first physical link layer device (PHY) coupled to a first end of the wire pair via a first terminal and a second terminal of the first PHY, the first PHY comprising a first transceiver for differential mode data signals; a second PHY coupled to a second end of the wire pair via a third terminal and a fourth terminal of the second PHY, the second PHY comprising a second transceiver for the differential mode data signals; at least the first PHY being coupled to the wire pair via circuitry comprising:\n an autotransformer having a first winding, a second winding, and a center tap between the first winding and the second winding, the autotransformer having a fifth terminal coupled to the first terminal of the first PHY, and a sixth terminal coupled to the second terminal of the first PHY, wherein the center tap is connected through a low impedance to ground; and \n a common mode choke (CMC) having a seventh terminal coupled to the fifth terminal of the autotransformer, and an eighth terminal coupled to the sixth terminal of the autotransformer, the CMC also having a ninth terminal coupled to a first one of the wires, and a tenth terminal coupled to a second one of the wires, \n wherein the CMC and autotransformer significantly attenuate the transmission of common mode noise between the wire pair and the first PHY while not significantly attenuating the transmission of differential mode data signals between the wire pair and the first PHY.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 88.0
- Lexical Diversity: 1.88732
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15653170', '15653058', '15385094', '14831102', '11279322']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4548385719944307
- 35 USC 102 Novelty (BERT): 0.5170045147436616
- Combined Prediction Score: 0.4610551662693538
- Mean Citation Score: 260.488846
- Max Citation Score: 303.13022
- Similarity Product: 235.9426159611261

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

Dataset: test