PATENT CLAIM ANALYSIS

Application Number: 15995877
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-09
Patent Classification: ["375", "341000"]

Abstract:
In one implementation, a receiver has a module to calculate the cross-correlation between a portion of a digital representation of a received signal and a reference signal. The receiver also has a module to generate an estimate of a portion of a message potentially included in the digital representation of the received signal and a screening module to determine the likelihood that the received signal includes a message. For a received signal that is determined likely to include a message, the receiver includes a carrier refinement module to shift the frequency of carrier pulses in the digital representation of the received signal toward a desired frequency and to align the phase of carrier pulses in the digital representation of the received signal with a desired phase and a coherent matched filter to recover the message from the digital representation of the received signal.

Claim (Index 20):
A receiver for receiving 1090 MHz Mode S Extended Squitter (\u201cES\u201d) ADS-B messages in low-Earth orbit comprising:\n a field programmable gate array having:\n a first logic block configured to detect the presence of a spectral component within a range of 1090 MHz within a portion of a digital representation of a received signal, \n a second logic block configured to compare, as a consequence of having detected the presence of the spectral component within the range of 1090 MHz within the portion of the digital representation of the received signal, the portion of the digital representation of the received signal and a reference signal representing an expected pulse pattern for the first n\u226513 bit periods of a 1090 MHz Mode S ES ADS-B message, \n a third logical block configured to make a first determination that the digital representation of the received signal is likely to include a 1090 MHz Mode S ES ADS-B message as a result of the comparison of the portion of the digital representation of the received signal and the reference signal, \n a fourth logic block configured to generate, as a consequence of having made the first determination that the digital representation of the received signal is likely to include a 1090 MHz Mode S ES ADS-B message, a minimum mean square error estimation of the first n bit periods of a 1090 MHz Mode S ES ADS-B message potentially included in the digital representation of the received signal from the portion of the digital representation of the received signal, \n a fifth logic block configured to compare features of the minimum mean square error estimation of the first n bit periods of the estimate of the 1090 MHz Mode S ES ADS-B message potentially included in the received signal to expected features of the first n bit periods of a 1090 MHz Mode S ES ADS-B message, \n a sixth logic block configured to make a second determination that the digital representation of the received signal is likely to include a 1090 MHz Mode S ES ADS-B message as a result of the comparison of the features of the minimum mean square error estimation of the first n bit periods of the estimate of the 1090 MHz Mode S ES ADS-B message potentially included in the received signal to expected features of the first n bit periods of a 1090 MHz Mode S ES ADS-B message, \n a seventh logic block configured to shift the frequency of carrier pulses in the digital representation of the received signal toward a desired frequency and to align the phase of carrier pulses in the digital representation of the received signal with a desired phase responsive to a determination that the second measure satisfies the second condition, and \n an eighth logic block configured to provide a coherent matched filter that is phase-matched to the desired phase to recover, from the digital representation of the received signal, a 1090 MHz Mode S ES ADS-B message.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 94.0
- Lexical Diversity: 2.64286
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15462450', '15462415', '13689874', '13875749', '11644422']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5219240762220699
- 35 USC 102 Novelty (BERT): 0.5919304815776936
- Combined Prediction Score: 0.5289247167576323
- Mean Citation Score: 321.775684
- Max Citation Score: 495.1223
- Similarity Product: 486.0036322193741

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

Dataset: test