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System and method for providing described television services

  • US 5,677,739 A
  • Filed: 03/02/1995
  • Issued: 10/14/1997
  • Est. Priority Date: 03/02/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus for providing described television services, comprising:

  • an encoder for encoding a description corresponding to visual scenes of an audiovisual program as text character data into a line of the vertical blanking interval of a video signal of the audiovisual program to form an integrated signal;

    a transmitter for transmitting said integrated signal;

    a receiver for receiving said integrated signal and extracting and storing said text character data from said integrated signal until a complete utterance is extracted;

    a text-to-speech converter for converting said description data into a speech signal corresponding to the complete utterance; and

    a speaker coupled to said text-to-speech converter for providing asynthesized voice to a viewer, wherein said synthesized voice is provided to the viewer asynchronously with spoken portions of an audio track of said audiovisual program.

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