Patent Document ID: 4579421
Application ID: 06539270
Patent Flag: 1

Claim One:
1. An electrooptic signal processing apparatus, comprising: a source of an electrical information signal; a first source of coherent light; first modulating means for intensity modulating the output of said first light source in response to an electrical signal to produce a first intermediate optical signal; second modulating means for modulating said first intermediate optical signal in response to delayed samples of said information signal to produce a second intermediate optical signal; means for integrating said second intermediate optical signal; a second source of coherent light; third modulating means for modulating the output of said second light source in accordance with the integrated values of said second intermediate optical signal to produce a third intermediate optical signal proportional to the integrated signals; fourth modulating means for modulating said third intermediate optical signal in response to delayed samples of said information signal to provide a fourth intermediate optical signal comprising a plurality of weighted samples; means for converting said fourth intermediate optical signal into an electrical output representative of the sum of said weighted samples; means for producing an electrical signal representing the difference of said electrical output and said information signal; and means for providing said difference signal to said first modulating means.