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Communication system and method using pictorial characters

  • US 7,052,396 B2
  • Filed: 04/09/2002
  • Issued: 05/30/2006
  • Est. Priority Date: 09/11/2000
  • Status: Expired due to Term
First Claim
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1. A communication device comprising:

  • communication circuitry;

    a memory which stores a library of characters;

    processing circuitry which is responsive to messages received via the communication circuitry for generating display data using one or more characters of the character library and which conditions the use of a character in the character library to send messages via the communication circuitry upon prior entry of a valid unlocking code for that character.

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