PATENT CLAIM ANALYSIS

Application Number: 16029648
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-10
Patent Classification: ["323", "313000"]

Abstract:
In a voltage generating circuit, a bandgap voltage generator has a first operational amplifier to receive a first voltage and a second voltage, and generate a bias voltage by comparing the first voltage and the second voltage, wherein the bandgap voltage generator generates a bandgap current according to the bias voltage and generates an output voltage according to the bandgap current. In a start-up circuit, a comparison circuit compares the first voltage or the second voltage with a reference voltage to generate a first comparison result, and generates a first current according to the first comparison result. A voltage regulator generates a second current according to the first current, and compares the second current with a reference current to generate a second comparison result, and adjusts a voltage value of the bias voltage according to the second comparison result.

Claim (Index 1):
A voltage generating circuit, comprising:\n a bandgap voltage generator, having a first operational amplifier, the first operational amplifier receiving a first voltage and a second voltage, generating a bias voltage by comparing the first voltage and the second voltage, wherein the bandgap voltage generator generates a bandgap current according to the bias voltage and generates an output voltage according to the bandgap current; and a start-up circuit, comprising:\n a comparison circuit, comparing the first voltage or the second voltage with a reference voltage to generate a first comparison result, and generating a first current according to the first comparison result, wherein the reference voltage is generated according to the first current; and \n a voltage regulator, coupled to the comparison circuit and the bandgap voltage generator, generating a second current according to the first current, comparing the second current and a reference current to generate a second comparison result, and adjusting voltage value of the bias voltage according to the second comparison result, wherein the voltage regulator comprises:\n a first transistor, where a first end of the first transistor is coupled to a power voltage end, a control end of the first transistor receives the first comparison result, wherein the first transistor generates the second current according to the first current; \n a second transistor, where a first end of the second transistor is coupled to a reference ground end, a second end of the second transistor receives the bias voltage; \n a reference current source, coupled between the second end of the first transistor and the reference ground end, generating a reference current, and drawing the reference current from the first transistor; and\n a buffer, coupled to the second end of the first transistor, receiving a current difference of the second current and the reference current, and generating the second comparison result according to the current difference, \n wherein the reference current source comprises: \n a third transistor, where a first end of the third transistor is coupled to the power voltage end, a control end of the third transistor is coupled to a first node, \n wherein a second end of the third transistor generates a third current according to a voltage on the first node; \n a fourth transistor, where a first end of the fourth transistor is coupled to the power voltage end, and a control end of the fourth end is coupled to the first node; \n a fifth transistor, where a first end of the fifth transistor is coupled to the power voltage end, and a second end and a control end of the fifth transistor are coupled to the first node; \n a sixth transistor, where a first end of the sixth transistor is coupled to the reference ground end, a second end and a control end of the sixth transistor are coupled to a second end of the fourth transistor; \n a seventh transistor, where a second end of the seventh transistor is coupled to the second end of the fifth transistor, a control end of the seventh transistor is coupled to the control end of the sixth transistor; and \n a first resistor, coupled between the first end of the seventh transistor and the reference ground end.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 95.0
- Lexical Diversity: 3.725
- Patent Class: 323.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14669352', '12325256', '11549763', '10424902', '14322935']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.75245166023595
- 35 USC 102 Novelty (BERT): 0.4801150379966115
- Combined Prediction Score: 0.7252179980120161
- Mean Citation Score: 217.77936600000004
- Max Citation Score: 224.62135
- Similarity Product: 173.74286601138715

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