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Speech input device with attention span

  • US 6,718,307 B1
  • Filed: 09/09/1999
  • Issued: 04/06/2004
  • Est. Priority Date: 01/06/1999
  • Status: Expired due to Term
First Claim
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1. A device for controlling an apparatus, the device comprising:

  • a receiving unit for receiving speech input, an analyzing unit for analyzing the received input for recognizing a command, and an activation unit for switching the device from a standby mode, in which the device is not operational for actual control of the apparatus, to an operational mode, in which the device is operational for actual control of the apparatus characterized in that the activation unit is arranged to switch the device from the standby mode to the operational mode upon the analyzing unit recognizing an activation instruction in the received speech input, said device being arranged to determine, in the operational mode, whether any command is recognized during a predetermined attention period, the attention period comprising a plurality of portions, said device being arranged to generate an attention signal if no command is recognized in at least one of the portions and to leave the operational mode and to enter the standby mode if no command is recognized during the attention period.

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