EP0142994A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Page make-up system
Assignee: Centurfax Ltd
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Filing: 1984-11-16
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Granted: —
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Expires: 2004-11-16
Abstract
Abstract Colour separations for use in page make-up are produced by scanning an outline original in a colour scanner to obtain a first output with high spatial resolution, modifying the output for reception by a video graphic system, generating a second full colour range output with lower spatial resolution by use of the manual input means of the system, with reference to a display on the system monitor derived from the first output, combining the first and second outputs to obtain an output with the high spatial resolution and the full colour range, and producing the separations by feeding the combined output to the expose side of the colour scanner.
Inventors
- 👤 Steven Nicholas Colthorpe
- 👤 Christopher Charles Mcray House
- 👤 William John Pickering
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 04:28
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/62; H04N1/622; H04N1/40; H04N1/40068
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
A method of producing colour separations for use in page make-up, the method comprising the steps of providing a first output comprising high spatial resolution signals representing a line original with a limited range of colour, providing a second output comprising low spatial resolution signals representing a greater colour range, and combining the first and second outputs to provide a combined output for production of the colour separations, the combined output having substantially the high spatial resolution of the first output and the colour range of the second output.
Claim 2
Independent Claim
89 words
A method of producing colour separations for use in page make-up, the method comprising the steps of providing a first output comprising high spatial resolution signals representing a line original with a limited range of colour, providing a second output comprising low spatial resolution signals representing a greater colour range, and combining the first and second outputs to provide a combined output for production of the colour separations, the combined output having substantially the high spatial resolution of the first output and the colour range of the second output.
Claim 3
Independent Claim
115 words
A method of producing colour separations for use in page make-up, the method comprising the steps of generating a high spatial resolution first output representing an outline comprising relatively complex features of the required page, supplying the first output to a video graphic system including display means for display by the display means of a version of the outline within the resolution capabilities of the video graphic system, operating the video graphic system to generate a second output representing the outline with colour added thereto, combining the first and second outputs by means of an interpolator device, and supplying the combined first and second outputs to an output device to produce the required colour separations.
Claim 4
Independent Claim
115 words
A method of producing colour separations for use in page make-up, the method comprising the steps of generating a high spatial resolution first output representing an outline comprising relatively complex features of the required page, supplying the first output to a video graphic system including display means for display by the display means of a version of the outline within the resolution capabilities of the video graphic system, operating the video graphic system to generate a second output representing the outline with colour added thereto, combining the first and second outputs by means of an interpolator device, and supplying the combined first and second outputs to an output device to produce the required colour separations.
Claim 5
Dependent Claim
44 words
A method as claimed in claim 2 including the step of operating the video graphic system to include in the second output signals representing a feature to be incorporated in the outline, the feature being composed only of lines parallel to the page edges.
Claim 6
Dependent Claim
62 words
A method as claimed in claim 2 or 3 having the steps of generating the first output by scanning an original positioned at the analysis station of a colour scanner, retaining the original on the scanner during generation of the second output, and thereafter again scanning the original to provide a repeat of the first output for combination with the second output.
Claim 7
Dependent Claim
39 words
A method as claimed in claim 2 or 3 having the steps of storing the first output in a memory and retrieving the stored first output therefrom after generation of the second output for combination with the second output.
Claim 8
Independent Claim
138 words
An apparatus for producing colour separations for use in page make-up, the apparatus comprising means (2,6;120) for generating a first output representing an outline of features to be included in the required page, the first output having high spatial resolution and restricted colour range, means (20) for transmitting the first output to a video graphic system (30), the video graphic system having display means (31) for providing a display derived from the first output and means (32) for selectively generating a lower resolution second output representing colours to be added to the outline, the second output having lower spatial resolution and an extended colour range, means (24) for combining the first and second outputs to provide a high spatial resolution output with the extended colour range, and means (4,10) employing the combined output for producing the colour separations.
Claim 9
Independent Claim
138 words
An apparatus for producing colour separations for use in page make-up, the apparatus comprising means (2,6;120) for generating a first output representing an outline of features to be included in the required page, the first output having high spatial resolution and restricted colour range, means (20) for transmitting the first output to a video graphic system (30), the video graphic system having display means (31) for providing a display derived from the first output and means (32) for selectively generating a lower resolution second output representing colours to be added to the outline, the second output having lower spatial resolution and an extended colour range, means (24) for combining the first and second outputs to provide a high spatial resolution output with the extended colour range, and means (4,10) employing the combined output for producing the colour separations.
Claim 10
Dependent Claim
22 words
An apparatus as claimed in claim 6 wherein the means for generating the first output comprises a computer aided design facility (120).
Claim 11
Dependent Claim
25 words
An apparatus as claimed in claim 6 wherein the means for generating the first output comprises the analysis side (2,6) of a colour scanner (1).
Claim 12
Dependent Claim
27 words
An apparatus as-claimed in claim 6, 7 or 8 wherein the means for producing the colour separations comprises the output side (10,4) of a colour scanner (1).
Claim 13
Dependent Claim
37 words
An apparatus as claimed in claim 6, 7, 8 or 9 having data storage means (37) in which the first output can be stored and from which it can be retrieved for combination with the second output.
Claim 14
Independent Claim
38 words
An apparatus as claimed in any one of claims 6-10 wherein the means for transmitting the first output includes anti-aliasing means (21) for modifying the first output to a form appropriate to reception by the video graphic system.
Claim 15
Independent Claim
42 words
An apparatus as claimed in any one of claims 6-11 wherein the means combining the first and second outputs comprises an interpolator device (24) including the data selection means arranged to decide between inconsistent colour information in the first and second outputs.
References Cited (Backward Citations)
No citation records indexed.
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