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US3909840A Expired / Lapsed US ⏱️ 0.0 years remaining

Multi-color data processing method

Assignee: N A C Inc
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Filing: 1973-11-12
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Granted: 1975-09-30
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Expires: 1993-11-12
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Abstract

Abstract A plurality of images photographed from the same object using a corresponding number of filters each having a light pass band different from one another are converted into television video signals of tri-color R, G and B having intensities or brightnesses corresponding to the densities of the images and subsequently these video signals are synthesized and displayed on a color monitor television. By eliminating selectively R, G and B level signals corresponding to the densities of the images from the synthesized color video signal, the density of the object in interest photographed in the images as well as the occupying area thereof can be determined merely by observing the change in color of the image displayed on the monitor device.

Inventors

  • 👤 Masaaki Takahashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 15:59
CPC Classifications
H; H04; H04N; H04N11/00; H04N9/00; H04N9/11

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 123 words
A method of processing multi-color data, comprising the steps of: simultaneously sensing by means of a plurality of image tubes a plurality of images of different densities photographed separately from an object through filters having different pass bands of light wave lengths; applying video signals arbitrarily selected from the outputs from said image tubes to respective amplitude comparators, each of said comparators having a plurality of discriminatable levels to produce red, green and blue signals each having brightness values corresponding to the amplitude values of said video signals; displaying said signals on a color monitor; and determining the levels of said amplitude comparators to which the amplitudes of said video signals correspond, and which vary in dependence upon the densities of said images.
Claim 2
Independent Claim 123 words
A method of processing multi-color data, comprising the steps of: simultaneously sensing by means of a plurality of image tubes a plurality of images of different densities photographed separately from an object through filters having different pass bands of light wave lengths; applying video signals arbitrarily selected from the outputs from said image tubes to respective amplitude comparators, each of said comparators having a plurality of discriminatable levels to produce red, green and blue signals each having brightness values corresponding to the amplitude values of said video signals; displaying said signals on a color monitor; and determining the levels of said amplitude comparators to which the amplitudes of said video signals correspond, and which vary in dependence upon the densities of said images.
Claim 3
Dependent Claim 46 words
The method of claim 1 further including the steps of: combining the outputs of said amplitude comparators to produce a pulse having a duration corresponding to the overlapping portion of said video signals; and generating a display corresponding to said overlapping portions of said video signals.

References Cited (Backward Citations)

US3193838A Cited
US3811113A Cited
US3612755A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-09-29 1979-03-31 1979-09-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-29 1983-03-31 1983-09-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-29 1987-03-31 1987-09-30 $7700.00 Window Closed / Lapsed

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