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Method and apparatus for quantum-limited data acquisition

  • US 5,489,782 A
  • Filed: 03/24/1994
  • Issued: 02/06/1996
  • Est. Priority Date: 03/24/1994
  • Status: Expired due to Fees
First Claim
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1. A method for forming a representation of a flux of discrete particles emitted by a plurality of particle emitters, particle emission by each said particle emitter being a random process substantially unaffected by particle emission by any other of said particle emitters, the random process imparting a random noise variation to the particle flux, the particle flux having an information-carrying variation having a bandwidth of interest, the method comprising the steps of:

  • detecting particles of the particle flux, and for each detected particle producing a quantized representation datum of said detection, said quantized representation being determined by a quantization cell size that is smaller than a contrast cell size sufficiently small to preserve contrast for the smallest feature of interest of said information-carrying variation of the particle flux; and

    filtering said quantized representation data through a band-limiting filter of bandwidth less than a bandwidth corresponding to said quantization cell size but greater than said bandwidth of interest.

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