Patent ID: 7910873
Filing Date: 2011-03-22
Classification: C40B,G01J,G01N,G16B

Abstract:
1. A system comprising: an array of pixels, each pixel comprising: a first photodetector; a first optical filter having a first passband to pass to the first photodetector a first filtered light having a first intensity; a second photodetector; a second optical filter having a second passband different from the first passband, the second optical filter to pass to the second photodetector a second filtered light having a second intensity; and a first circuit coupled to the first and second photodetectors to provide a voltage indicative of a logarithm of the ratio of the first intensity to the second intensity, wherein the array of pixels has M pixels, where M is an integer greater than one, and the system further comprises a second circuit comprising: a functional unit to store a set of weight vectors {right arrow over (w)} a set of N neuron processors, each neuron processor to provide a quantity A(h