US4352105A
Expired / Lapsed
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Display system
Assignee: Radiation Dynamics Inc
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Filing: 1979-09-25
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Granted: 1982-09-28
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Expires: 1999-09-25
Abstract
Abstract A system for displaying two functions of two variables. In one form, for displaying range and intensity functions for active infrared radar images, the system maps range information into hues, and intensity information into different apparent brightness levels for each of the various hues and generates corresponding control signals for a color display.
Inventors
- 👤 Robert C. Harney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:31
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/062
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
300 words
System for generating a control signal for controlling a color display to display signals representative of a first function f(i,j) and a second function g(i,j), where i and j are independent integer variables, comprising A. g-quantizer means for grouping the values of g(i,j) into a predetermined number (N) of groups, each of said groups corresponding to a predetermined range of the values of g(i,j), each of said ranges corresponding to a first predetermined perceptual color characteristic, wherein said g-quantizer includes means for generating a g-quantized matrix g'(i,j), where ##EQU4## where g'(i,j) is an integer, T equals M&K·S, where M and S are the mode and standard deviation, respectively, of the frequency of occurrence of the respective values o g(i,j) and K is a predetermined constant, and for each (i,j), n is the integer for which the cumulative distribution function of the g values exceeding T evaluated at (i,j) is between ##EQU5## where M is the maximum value of said cumulative distribution function, B. f-quantizer means for grouping the values of f(i,j) into a predetermined number (H) of groups, each of said groups corresponding to a predetermined range of the values of f(i,j), each of said ranges corresponding to a second predetermined perceptual color characteristic, where said secnd predetermined perceptual color characteristic is substantially orthogonal to said first predetermined perceptual color characteristic, wherein said f-quantizer includes means for generating an f-quantized matrix f'(i,j), where ##EQU6## wherein f'(i,j) is an integer, f MIN is the minimum value of f(i,j) and f MAX is the maximum value of f(i,j), and c. display map generator means operative for each point (i,j) to generate said control signal P(i,j), where ##EQU7## said control signal being representive of the first and second perceptual color characteristics f'(i,j) and g'(i,j), respectively, associated with f(x,y) and g(i,j) for that point.
Claim 2
Dependent Claim
300 words
System for generating a control signal for controlling a color display to display signals representative of a first function f(i,j) and a second function g(i,j), where i and j are independent integer variables, comprising A. g-quantizer means for grouping the values of g(i,j) into a predetermined number (N) of groups, each of said groups corresponding to a predetermined range of the values of g(i,j), each of said ranges corresponding to a first predetermined perceptual color characteristic, wherein said g-quantizer includes means for generating a g-quantized matrix g'(i,j), where ##EQU4## where g'(i,j) is an integer, T equals M&K·S, where M and S are the mode and standard deviation, respectively, of the frequency of occurrence of the respective values o g(i,j) and K is a predetermined constant, and for each (i,j), n is the integer for which the cumulative distribution function of the g values exceeding T evaluated at (i,j) is between ##EQU5## where M is the maximum value of said cumulative distribution function, B. f-quantizer means for grouping the values of f(i,j) into a predetermined number (H) of groups, each of said groups corresponding to a predetermined range of the values of f(i,j), each of said ranges corresponding to a second predetermined perceptual color characteristic, where said secnd predetermined perceptual color characteristic is substantially orthogonal to said first predetermined perceptual color characteristic, wherein said f-quantizer includes means for generating an f-quantized matrix f'(i,j), where ##EQU6## wherein f'(i,j) is an integer, f MIN is the minimum value of f(i,j) and f MAX is the maximum value of f(i,j), and c. display map generator means operative for each point (i,j) to generate said control signal P(i,j), where ##EQU7## said control signal being representive of the first and second perceptual color characteristics f'(i,j) and g'(i,j), respectively, associated with f(x,y) and g(i,j) for that point.
Claim 3
Dependent Claim
47 words
A system according to claim 1 further comprising a means for receiving signals to be displayed f(x,y) and g(x,y) where x and y are independent variables, and an input matrix generator including means for converting said functions f(x,y) and g(x,y) to input matrix signals f(i,j) and g(i,j).
Claim 4
Dependent Claim
88 words
The system according to claim 1 further comprising means for receiving said values of f(i,j) and g(i,j) wherein f is a range function of the coordinates i,j of objects in a two dimensional image of a target scene, wherein the values of said range function being representative of the position of objects at said coordinates in said target scene, and wherein g is an intensity function of i,j, the values of said intensity function are representative of the reflectivity of objects at said coordinates in said target scene.
Claim 5
Dependent Claim
88 words
The system according to claim 1 further comprising means for receiving said values of f(i,j) and g(i,j) wherein f is a range function of the coordinates i,j of objects in a two dimensional image of a target scene, wherein the values of said range function are representative of the position of objects at said coordinates in said target scene, and wherein g is a velocity function of i,j, the values of said velocity function being representative of the velocity of objects at said coordinates in said target scene.
Claim 6
Dependent Claim
88 words
The system according to claim 1 further comprising means for receiving said values of f(i,j) and g(i,j) wherein f is a velocity function of the coordinates i,j of objects in a two dimensional image of a target scene, wherein the values of said velocity function being representative of the velocity of objects at said coordinates in said target scene, and wherein g is an intensity function of i,j, the values of said intensity function being representative of the reflectivity of objects at said coordinates in said target scene.
Claim 7
Independent Claim
60 words
The system according to claims 1 or 3 or 4 or 5 wherein said first perceptual color characteristic is hue and said second perceptual color characteristic is apparent brightness, and wherein said control signal generating means includes means for generating said control signal whereby said control signal is adapted to control the hue and apparent brightness of said color display.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |