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Method and device communicating a command

  • US 7,324,159 B2
  • Filed: 11/05/2001
  • Issued: 01/29/2008
  • Est. Priority Date: 11/08/2000
  • Status: Active Grant
First Claim
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1. A method of communicating a command to a controllable device, comprising the steps of:

  • generating a watermark comprising the command, which is to be executed by the controllable device;

    generating a watermarked signal comprising the watermark and an information unit to be transmitted to the controllable device; and

    transmitting the watermarked signal to the controllable device for causing the controllable device to execute the command, wherein transmitting the watermarked signal comprises rendering the watermarked signal using at least one of a video device and an audio device, the controllable device capable of receiving the rendered watermarked signal produced by at least one of the video device and the audio device.

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