PATENT CLAIM ANALYSIS

Application Number: 15944457
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["375", "296000"]

Abstract:
A differential data transmitter with pre-emphasis comprises a main driver coupled to receive an input data stream and to produce a main differential output stream which varies with the input stream, circuitry which provides a delayed and inverted version of the input stream, and a first pre-emphasis driver coupled to the output of the circuitry and arranged to produce a pre-emphasis differential output stream which varies with the delayed and inverted input stream. The pre-emphasis differential output stream is coupled to the main differential output stream to produce differential data transmitter output signals. The main and pre-emphasis drivers operate in parallel, with the pre-emphasis driver boosting the output signals when consecutive bits in the input stream change state, and attenuating the output signals when consecutive bits in the input stream do not change state.

Claim (Index 7):
A differential data transmitter with pre-emphasis, comprising:\n an input node adapted to receive an input stream of serialized data bits; a first main driver coupled to said input node and arranged to produce a main differential output stream which varies with said input stream; circuitry coupled to said input node which provides a delayed and inverted version of said input stream at an output; a first pre-emphasis driver coupled to the output of said circuitry and arranged to produce a pre-emphasis differential output stream which varies with said delayed and inverted version of said input stream, said pre-emphasis differential output stream coupled to said main differential output stream to produce differential data transmitter output signals data_P and data_N at a differential data transmitter output node, said differential data transmitter output signals having associated full signal swings; said first main and first pre-emphasis drivers operating in parallel and arranged such that said first pre-emphasis driver boosts said differential data transmitter output signals such that they provide said full signal swings when consecutive bits in said input stream change state, and to attenuate said differential data transmitter output signals such that they provide signal swings less than said full signal swings when consecutive bits in said input stream do not change state; wherein said delayed and inverted input stream is delayed by an amount Z \u22121 , said first main driver comprising:\n a pre-driver having an input coupled to said input node and which provides differential signals DRV_P and DRV_N at a differential output; \n first cross-coupled transistors coupled to receive differential signals DRV_P and DRV_N at respective inputs and to provide differential signals main_data_P and main_data_N at respective outputs; and \n first and second main output resistors R m1  and R m2  coupled between said first cross-coupled transistor outputs and said differential data transmitter output node; \n said first pre-emphasis driver comprising:\n a pre-driver having an input coupled to said the output of said circuitry and which provides differential signals DRV_N*Z \u22121  and DRV_P*Z \u22121  at a differential output; \n second cross-coupled transistors coupled to receive differential signals DRV_N*Z \u22121  and DRV_P*Z \u22121  at respective inputs and to provide differential signals pre_data_N and pre_data_P at respective outputs; and \n first and second pre-emphasis output resistors R p1  and R p2  coupled between said second cross-coupled transistor outputs and said differential data transmitter output node, such that said signal pre_data_N is coupled to said output signal data_P and said signal pre_data_P is coupled to said output signal data_N; \n wherein R m1 =R m2 =R m  and R p1 =R p2 =R p ; wherein said cross-coupled transistors comprise FETs, each of which has an associated \u2018on\u2019 resistance R on , such that the output impedance of said main driver is given by R m +R on  and the output impedance of said pre-emphasis driver is given by R p +R on , and such that the combined output impedance Z t  of said differential data transmitter is given by: Z t = ( R m + R on ) * ( R p + R on ) R m + R on + R p + R on .

Metadata:
- Claim Count in Document: 40.0
- Percentile: 91.0
- Lexical Diversity: 2.9375
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12968190', '10649734', '11752941', '15845466', '12948362']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4844357119352512
- 35 USC 102 Novelty (BERT): 0.4905363790085724
- Combined Prediction Score: 0.4850457786425834
- Mean Citation Score: 214.98436
- Max Citation Score: 249.15582
- Similarity Product: 199.29601169181348

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