Patent EP0024862A2 successfully refreshed from Google Patents.
EP0024862A2
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EP
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Video apparatus for visualing effects of selected juxtaposed colours
Assignee: Individual
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Filing: 1980-08-18
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Granted: —
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Expires: 2000-08-18
Abstract
Abstract The apparatus allows a display simulating a room or other object on a television-type display. Each segment of the room can be displayed in any desired colour. In one embodiment, a number of colours can be defined by respective colour composer circuits (10) as R,B,G signals on buses (12). Given colours are assigned to given areas of the display by selectors (11). The R,B,G signals thus defined are gated to the display by a gating unit (14). The control inputs (16) to the gating unit (14) are controlled by segment generating hardware (Fig. 4) to define the desired segments of the display on the screen.
Inventors
- 👤 Harold Charles Taylor
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 19:49
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/003; G; G09; G09G; G09G5/00; G09G5/02; H; H04; H04N; H04N9/00; H04N9/64; H04N9/74
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A video apparatus comprising: a visual display unit (v.d.u.) for giving a colour image in response to a set of three primary colour signals; scanning means for producing a raster scan on the v.d.u.; colour composing means for producing a plurality of sets of primary colour signals, each set defining a desired colour; segment generating means operating in synchronism with the scanning means to divide the image area into a plurality of segments to form a stylised simulation of a real object, and gating means for gating a respective set of primary colour signals to the v.d.u. during scanning of each segment; whereby a simulation of the object with different parts each in a desired colour may be achieved for visual evaluation.
Claim 2
Dependent Claim
122 words
A video apparatus comprising: a visual display unit (v.d.u.) for giving a colour image in response to a set of three primary colour signals; scanning means for producing a raster scan on the v.d.u.; colour composing means for producing a plurality of sets of primary colour signals, each set defining a desired colour; segment generating means operating in synchronism with the scanning means to divide the image area into a plurality of segments to form a stylised simulation of a real object, and gating means for gating a respective set of primary colour signals to the v.d.u. during scanning of each segment; whereby a simulation of the object with different parts each in a desired colour may be achieved for visual evaluation.
Claim 3
Dependent Claim
47 words
The apparatus of claim 1, in which the colour composing means comprises a plurality of colour composing. circuits each of which may be operated to define a desired colour, and switching means for directing the output of a selected colour composing circuit to a desired image segment.
Claim 4
Dependent Claim
68 words
The apparatus of claim 1, in which the colour composing means comprises a colour composing circuit providing analog red, blue and green (R,B,G) signals and a digital-to-analog converter for providing digital R,B,G signals; and in which the gating means includes sample-and- hold means for each display segment which may be manually operated to maintain a desired colour on that segment during further operation of the colour composing circuit.
Claim 5
Dependent Claim
56 words
The apparatus of claim 3, further including a digital store holding sets of R,B,G signals defining predetermined standard colours, and comparison means comparing the digital R,B,G signals from the colour composing circuit with the storedR,B,G signals; the comparison means enabling alteration of a displayed colour only when said signals are within a given range of coincidence.
Claim 6
Independent Claim
30 words
The apparatus of any of claims 2 to 4, in which the or each colour composing circuit comprises manually operable controls for setting each of hue, saturation (white), and black.
Claim 7
Dependent Claim
49 words
The apparatus of claim 5, wherein a hue potentiometer controls proportioning circuits to produce analog R,B,G signals in which, at any setting of the potentiometer, a first of the R,B,G signals is zero, a second of said signals is 100%, and the third signal is at an intermediate amplitude.
Claim 8
Dependent Claim
34 words
The apparatus of claim 6, in which incrementing of a white control acts to increase said second and third signals at a rate proportional to their difference from 100% for the chosen saturated hue.
Claim 9
Independent Claim
46 words
The apparatus of any preceding claim, in which the segment generating means comprises transition generating means acting to generate transition signals defining full-screen lines, parts of which form transitions between said image segments, and blanking means which operate to blank unwanted parts of said transition signals.
Claim 10
Dependent Claim
28 words
The apparatus of claim 8, in which the transition generating means comprises means for dividing line and frame frequency signals to generate vertical and horizontal transition signals, respectively.
Claim 11
Dependent Claim
51 words
The apparatus of claim 8 or claim 9, in which the transition generating means includes, for generating a sloping transition signal, a clock running at a frequency of N x line frequency, and a circuit arranged to divide the clock frequency by (N ± x) where x is a small integer.
References Cited (Backward Citations)
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