Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Optical Systems

Color-reproducing-method-and-apparatus-for-converting-a-color-space-data-into-another-color-space-data

Method of detecting and adjusting exposure conditions of charged particle exposure system

An object of the present invention is to provide a method of accurately detecting exposure ...

Veiling glare control holographic windshield

OF THE PREFERRED EMBODIMENT FIG. 2 illustrates a veiling glare control holographic windshield 50 ...

System and method of forming structural assemblies with 3-D woven joint pre-forms

The present invention provides a co-bonded structural assembly for composite materials that ...

Composition containing polymerizable entities having oxirane groups and terminal olefinic unsaturation in combination with free-radical and cationic photopolymerizations means

What is claimed is: 1. A photocurable resin composition comprising (A) a partially esterified ...

Viewer/projector for display of 360 degree holographic film cassettes

The invention claimed is: 1. A cassette for storage, handling and display of holographic film ...

Method of preparing volume type hologram film

OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention will be described ...

Ribbed gasket for miniature galvanic cell

OF THE DRAWINGS FIG. 11 shows a zinc-air cell of the prior art (using the components as identified ...

Manufacturing method for a hologram and a related exposure apparatus

Accordingly, in view of the above-described problems encountered in the related art, a principal ...

Testing and inspecting lens by holographic means

I claim: 1. In a process for holographically testing concave and convex surfaces wherein a hologram ...

Method for writing holograms

We claim: 1. A method of forming a hologram comprising storing in a computer a program ...

Color reproducing method and apparatus for converting a color space data into another color space data

Details

Inventors: Tanaka, Kenji; Kato, Asako;
Assignee: Victor Company of Japan, Ltd. (JP)
Primary Examiner: Lee; Thomas D.
Assistant Examiner: Grant, II; Jerome
Attorney, Agent or Firm: Meller; Michael N.

Color reproducing ranges of a CRT and a printer are divided to a plurality of sector areas which extend radially from a predetermined center point on an achromatic color axis (L* axis). For each sector area, a number of maximum distances of the color reproducing ranges of the CRT and the printer are measured from the predetermined center point. This maximum distance data are used to calculate a compression or expansion ratio for compressing the color reproducing range of the CRT into the color reproducing range of the printer, or vice-versa, the color reproducing range of the printer can be expanded into the color reproducing range of the CRT. With this compression or expansion ratio, the color space data of the CRT is compressed or expanded into the color reproducing range of the printer toward or away from the predetermined center point. Thus, it is possible to convert the color reproducing ranges of the CRT to that of the printer without losing a balance of luminosity and chroma.

DETAILED DESCRIPTION An object of the present invention is to provide a color reproducing method and apparatus capable of converting a color reproducing range into another color reproducing range without losing a balance between luminosity and chroma.
Another object of the present invention is to facilitate a calculation necessary for color data compression in converting a first color reproducing range to a second different color reproducing range.
A feature of the present invention is to divide each of two color space data having different color reproducing ranges into a plurality of sector areas radially extending from a center set as a predetermined point on an achromatic color axis and the space data are then compressed or expanded in every sector area toward or away from the center point.
A further object of the present invention is to provide a color reproducing method for converting a first color space data having a first color reproducing range into a second color space data having a second color reproducing range.
This method comprises a step of dividing the first and second color reproducing ranges into a plurality of sector areas radially extending from a predetermined center point on an achromatic color axis, a first calculating step of calculating the maximum distances between said first and second color reproducing ranges as measured from said predetermined center point for every sector area, another calculating step of calculating a color data compression or expansion ratio for compressing or expanding one of said first and second color space data into the other one of the color space data on the basis of the differences in the measured maximum distance between said first and second color reproducing ranges, and a step of compressing or expanding one of said first and second color space data into the other one of the color reproducing range toward or away from said predetermined center point by use of the calculated compression or expansion ratio.
It is still a further object of the present invention to provide a color reproducing apparatus for converting a first color space data having a first color reproducing range into a second color space data having a second color reproducing range

Related patents

	Image transfer sheet and image forming method using the image transfer sheet Accordingly, an object of the present invention is to provide an image transfer street which is used for wet-type image transfer methods and which can form a transferred ...
	Method and apparatus for color conversion In order to accomplish above purpose, the present invention provides a method and apparatus for transforming color signals which can transform an input color signal ...
	Holographic system for the storage of audio, video and computer data An object of this invention is to provide a holographic apparatus which is capable of serving equally well as an audio and video playback mechanism, and as a read-only ...
	Printed circuit board What is claimed is: 1. A printed circuit board comprising a non-conductive substrate and at least one conductive line printed on said substrate, said line comprising a U....
	Optical storage media with discontinuous thin metallic films In accordance with this invention an optical storage medium for storing binary data by printing coding spots in the storage medium is provided. The medium is adapted to ...
	Method of manufacturing high efficiency, broad bandwidth, volume holographic elements and solar concentrators for use therewith FIG. 1 is a pictorial, schematic representation of the technique of this invention for manufacturing the holographic plate of high efficiency broad bandwidth ...
	Polymer dispersed liquid crystal panel with diffraction grating An object of this invention is to provide a liquid crystal panel capable of realizing high luminance display and contrast, and a liquid crystal projection apparatus ...
	Three-dimensional image display device This invention is made in view of such circumstances. It is an object of the present invention to provide a simple-structured three-dimensional image display device ...
	Optically active diffractive device OF THE PREFERRED EMBODIMENTS The preferred diffractive liquid crystal phase gratings according to the invention are shown in the drawings. Referring to FIG. 1, the ...
	Matrix-type display device An object of the present invention is to reduce the power consumption and the amount of heat generation during operation of a matrix-type display device. To attain the ...

0.014
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved