PATENT CLAIM ANALYSIS

Application Number: 15869901
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["340", "853100"]

Abstract:
This invention is designed for use in transmission of data between downhole module in a wellbore and a controlling module at the surface. The invention provides an apparatus for receiving data signals from a telemetry module comprising first and second adaptive equalisers, and in which in a first modulation mode the coefficients of the first adaptive equaliser are updated until an error signal falls below a predetermined threshold and in a second modulation mode the coefficients of the first adaptive equaliser are locked and coefficients of the second adaptive equaliser are updated to continually minimise an error signal in which the number of bits encoded by the symbols of the first signal in an initial modulation mode is fewer than the number of bits encoded by the symbols of the second signal in a subsequent modulation mode.

Claim (Index 7):
An apparatus for receiving data signals from a telemetry module comprising:\n a first adaptive equaliser for receiving a signal transmitted via a channel in which the received signal differs from the transmitted signal due to channel distortion and/or noise, the signal comprising a sequence of symbols encoded by inphase and quadrature components; the first adaptive equaliser comprising:\n a first filter for filtering a portion of the received signal using a first filter having a plurality of first filter coefficients; \n a first slicer for determining the likely inphase and quadrature components of the first transmitted signal; \n a first error calculator for determining a first error signal in dependence upon the difference between the likely inphase and quadrature components and the received inphase and quadrature components; and \n a first coefficient updater for updating the first filter coefficients to reduce said first error signal when the received signal is encoded by the initial modulation and until the average first error signal is less than a predetermined threshold; and\n a second filter for filtering a portion of the a first filtered signal received from the first filter using a second filter having a plurality of second filter coefficients; \n a second slicer for determining the likely inphase and quadrature components of the second transmitted signal; \n a second error calculator for determining a second error signal in dependence upon the difference between the likely inphase and quadrature components and the received inphase and quadrature components; and \n a second coefficient updater for updating the second filter coefficients to reduce said second error signal.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 2.25806
- Patent Class: 340.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14769672', '09981085', '15446444', '12205448', '14769695']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6428266438317165
- 35 USC 102 Novelty (BERT): 0.5130473857102514
- Combined Prediction Score: 0.62984871801957
- Mean Citation Score: 225.326068
- Max Citation Score: 256.1573
- Similarity Product: 189.5036071287752

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