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Software modem for communicating data using encrypted data and unencrypted control codes

  • US 20030009678A1
  • Filed: 07/09/2001
  • Published: 01/09/2003
  • Est. Priority Date: 07/09/2001
  • Status: Active Grant
First Claim
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1. A communications system, comprising:

  • a physical layer hardware unit adapted to communicate data over a communications channel, the physical layer hardware unit being adapted to receive unencrypted control codes and encrypted user data over the communications channel and transmit an upstream data signal over the communications channel based on the control codes; and

    a processing unit adapted to execute a software driver for interfacing with the physical layer hardware unit, the software driver including program instructions for implementing a protocol layer to decrypt the user data and provide the upstream data to the physical layer hardware unit.

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