Back to results
US 3,969,699 AGranted
Image dissector with many apertures for Hadamard encoding
AssigneeHoneywell Inc.
InventorLaurence D. McGlaughlin
Life of this patent
Estimating the term…
Abstract
An improved image dissector camera tube system for improving the signal-to-noise ratio in which the aperture plate of the image dissector has a plurality of apertures, the apertures individually biased by an electronic control network to accomplish a Hadamard encoding of the electron image.
Claims3
An improved image dissector camera tube system comprising:
- photocathode means for generating an electron image;
- a plurality of normally operative detector means at known adjacent positions of the electron image for producing signals indicative of the electron density at each of the known adjacent positions;
- electron controlling means for causing one of a plurality of predetermined patterns of said plurality of detector means to be inoperative during each of a plurality of successive image sampling periods, said electron controlling means further comprising programmed modulator means connected in controlling relation to each of said detector means;
- combining means for combining the signals from the operative detector means during each of the plurality of sampling periods to produce a combined signal for each of said plurality of periods, said programmed modulator means together with said combining means being so coded as to cause the electron image to be transformed to a Hadamard image;
- and
- transform means for transforming the combined signals into a series of electrical signals indicative of the electron image.
3 more elements
An improved image dissector camera tube system comprising:
- photocathode means for generating an electron image;
- n normally operative detector means at known adjacent positions of the electron image for producing signals indicative of the electron density at each of the known adjacent positions;
- where n is an integer;
- electron controlling means for causing a different one of n predetermined patterns of said detector means to be inoperative during each of n successive image sampling periods;
- combining means for combining the signals from the operative detector means during each of the n sampling periods to produce a combined signal for each of said periods, said electron controlling means further comprising programmed modulator means connected in controlling relation to each of said detector means, said programmed modulator means together with said combining means being so coded as to cause the electron image to be transformed to a Hadamard image;
- and
- transform means for transforming the combined signals into a series of electrical signals indicative of the electron image.
4 more elements
Dependencies are inferred from the claim text.