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Universal remote control allowing natural language modality for television and multimedia searches and requests

  • US 6,553,345 B1
  • Filed: 08/26/1999
  • Issued: 04/22/2003
  • Est. Priority Date: 08/26/1999
  • Status: Expired due to Term
First Claim
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1. A remote control system for controlling at least one audio/video component comprising:

  • a handheld case;

    a microphone disposed in said case for receiving speech input from a user;

    a communication system disposed in said case for transmitting data signals to a location remote from said handheld case;

    a speech recognizer for processing said speech input;

    a memory for storing a semantic representation of an electronic program guide; and

    a natural language parser in communication with said speech recognizer and with said memory, said parser being operative to extract semantic content from said processed speech input and to access semantic representation of said electronic program guide using said extracted semantic content to generate control instructions for said audio/video component such that the natural language parser is a task-based parser employing a grammar comprising a plurality of frames having slots representing semantic structure of said electronic program guide, wherein the natural language parser further comprises a local parser adapted to identify predetermined task-related fragments in said speech input, and a global parser adapted to receive task-related fragments and to extract overall semantics from the task-related fragments.

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