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Integrated circuit having obscured state change circuitry

  • US 7,962,767 B2
  • Filed: 04/08/2010
  • Issued: 06/14/2011
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. An integrated circuit comprising first and second circuitry which are configured to emit light when undergoing changes in state, the first and second circuitry being operated to change state at the same time so as to hinder optical detection of the light emitted by the first circuitry.

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