PATENT CLAIM ANALYSIS

Application Number: 15962089
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["331", "057000"]

Abstract:
A ring oscillator circuit is formed by series connected inverter circuits with a feedback loop. The inverter circuits are source biased with an oscillator voltage. A resistor-less bias current generator circuit generates a bias current for application to a replica inverter circuit to generate a bias voltage. A scaling circuit operates to scale the bias voltage by a selectable scaling factor to generate the oscillator voltage in a manner which balances a mobility effect of the inverter circuits within the ring oscillator circuit against a threshold voltage effect of the inverter circuits within the ring oscillator circuit. The clock signal output from the ring oscillator circuit has a frequency which is independent of process, voltage and temperature (PVT) spread.

Claim (Index 14):
The circuit of  claim 13 , wherein the bias current generator circuit comprises:\n a first p-channel MOSFET; a second p-channel MOSFET in a diode-connected configuration; a third p-channel MOSFET; a fourth p-channel MOSFET having a drain generating the bias current; wherein the first through fourth p-channel MOSFETs form a current mirror circuit; a first n-channel MOSFET in a diode-connected configuration that is connected in series with the first p-channel MOSFET; a second n-channel MOSFET in a diode-connected configuration that is connected in series with the third p-channel MOSFET; a third n-channel MOSFET coupled in series with the second p-channel MOSFET, wherein gates of the second and third n-channel MOSFET are connected to each other; and a fourth n-channel MOSFET coupled in series with the third n-channel MOSFET, wherein the first and fourth n-channel MOSFETs form a further current mirror circuit.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 91.0
- Lexical Diversity: 2.01587
- Patent Class: 331.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15403393', '14166904', '14152523', '13410104', '15482789']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7728855749898755
- 35 USC 102 Novelty (BERT): 0.4893764386755943
- Combined Prediction Score: 0.7445346613584474
- Mean Citation Score: 197.745092
- Max Citation Score: 214.91669
- Similarity Product: 157.31550569624426

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