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Conformal retro-modulator optical devices

  • US 7,142,348 B2
  • Filed: 06/15/2005
  • Issued: 11/28/2006
  • Est. Priority Date: 10/21/2002
  • Status: Active Grant
First Claim
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1. A method of addressing an array of AFP MQW pixels having first and second sets of electrodes comprising:

  • (a) scanning the first set of electrodes to detect any sensing current resulting from the photoactivation of a pixel while the second set of electrodes is scanned with a small negative voltage;

    (b) if a pixel is detected in step (a) as being photoactivated, sampling any data received by the photoactivated pixel in handshaking protocol to determine whether a party photoactivating the photoactivated pixel is friend or foe;

    (c) if the photoactivated pixel is turned on by a friend, applying a modulating voltage waveform to a corresponding electrode in the second set of electrodes corresponding photoactivated pixel;

    (d) if the photoactivated pixel is turned on by a foe, a voltage V, which is a zero reflection bias for the photoactivated pixel, is applied to a corresponding electrode in the second set of electrodes corresponding photoactivated pixel.

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