Patents Assigned to Auristar Technologies Inc.
  • Personal computer having a sound card
    Patent number: 6381309
    Abstract: Telephone Device for the Deaf (TDD transitive) for a computing system and method of encoding and decoding TDD signals are described. The apparatus includes a sound card enabled to transmit and receive TDD coded Frequency Keying modulated audio signals. In extracting characters from a received audio signal, the sound card is used to sample the received audio signal. In extracting data bits from the received audio signal, groups of samples representing portions of the received signal are correlated against two frequencies.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: April 30, 2002
    Assignee: Auristar Technologies Inc.
    Inventor: Jacques Tremblay