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Communication applications

  • US 9,778,389 B2
  • Filed: 12/04/2012
  • Issued: 10/03/2017
  • Est. Priority Date: 05/27/2011
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a seed transmitter selector arranged to select a seed value from a plurality of seed values to reduce differential pulse position modulation transmission time, the selection based on calculations of time, for each seed value of the plurality of seed values, to complete transmission of a payload;

    a scrambler module to transform larger values of acquired data into smaller values of transformed data according to the seed value selected from the plurality of seed values to reduce differential pulse position modulation transmission time;

    a differential pulse position modulator to modulate the transformed data and a checksum associated with the transformed data as a propagation signal; and

    a transducer to transmit the propagation signal into drilling fluid or a geological formation.

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