Optical processor based imaging system
First Claim
1. An image processing array for comparing light levels from different image sources, the array comprising multiple pixel elements, each pixel element having:
- a first photo detector having an anode and a cathode, the first detector in exposure to a light level from a first image source; and
a second photo detector having an anode, and a cathode, the second detector in exposure to a light level from a second image source, the anode of the second detector being electrically coupled to the cathode of the first photo detector, and the cathode of the second detector being electrically coupled to the anode of the first detector.
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Abstract
An image processing system for capturing and compressing images into a digital format is disclosed. The system has an array of imaging pixel elements which consist of two photodiode detectors. One photodiode detector is a capture detector while the other detector is a reference detector. The capture detector has an anode electrically coupled to the cathode of the reference detector. The cathode of the capture detector is electrically coupled to the anode of the reference detector. An image may be compared to a reference image detected by the reference detector. Different levels of light between the captured image and the reference image change the electrical output of the opsistor. Image compression is facilitated since only pixel elements which change from frame to frame need be stored. Additionally, a processing and compression circuit may use column and row scans to eliminate unchanged pixels and store only pixels with different light levels between images.
423 Citations
20 Claims
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1. An image processing array for comparing light levels from different image sources, the array comprising multiple pixel elements, each pixel element having:
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a first photo detector having an anode and a cathode, the first detector in exposure to a light level from a first image source; and a second photo detector having an anode, and a cathode, the second detector in exposure to a light level from a second image source, the anode of the second detector being electrically coupled to the cathode of the first photo detector, and the cathode of the second detector being electrically coupled to the anode of the first detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image processing system for capturing an image source, the system comprising:
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an image array having at least one pixel element, the at least one pixel element having; capture photo detector having an anode and a cathode, the capture photo detector in exposure to the image source; a reference photo detector having an anode, a cathode, the anode of the reference detector being electrically coupled to the cathode of the capture photo detector, and cathode of the reference detector being electrically coupled to the anode of the capture detector; and a light emitter array having at least one light emitter for each pixel element, wherein the light emitter emits light on the reference detector. - View Dependent Claims (11)
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12. An image processing system for capturing an image source, the system comprising:
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a front substrate having a front and rear surface; an image array having multiple pixel elements fabricated on the front surface of the front substrate, each pixel element having a capture photo detector having an anode and a cathode, the capture photo detector in exposure to the image source; a rear substrate having a rear surface; a reference photo detector fabricated on the rear surface of the rear substrate, the reference photo detector having an anode and a cathode, the anode of the reference detector being electrically coupled to the cathode of the capture photo detector of a selected pixel element, and cathode of the reference detector being electrically coupled to the anode of the capture detector of the selected pixel element; a middle substrate between the front substrate and the rear substrate with a processing circuit electrically coupled to each pixel element and corresponding reference detector. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification