← Back to Patent Explorer
US6234801B1 Expired / Lapsed US ⏱️ 0.0 years remaining

Color comparison list for displaying of the color system

Assignee: ZENITH COLOR-TECH Corp
•
Filing: 2000-01-21
•
Granted: 2001-05-22
•
Expires: 2020-01-21
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A hue comparison device allows to precisely identify each hue by three attributes: hue angle, hue chroma, and hue depth. The device includes a number of hue sheets stacked together in a predetermined sequence. Each hue sheet contains a central standard gray area surrounded by hue blocks arranged in coaxial hue circles. Angular position of each hue block relative to a predetermined reference point on the hue sheet defines the color (i.e., the position of the hue on the spectral scale). The hue blocks of each hue circle are located at equal distance from the central standard gray area of the hue sheet. The hues of each hue circle have a predetermined chroma parameter which increases from a hue circle to the next hue circle in the direction from the center to the periphery of the hue sheet in predetermined increments. The difference in the number of hue blocks between adjacent hue circles equals six (6) hue blocks. In each hue sheet, the central standard gray area determining the depth of hues on the hue sheet, and is obtained by mixing together any three (3), or multiple of three (3), hues equidistanced along the same hue circle.

Inventors

  • 👤 Yun-Peng Hsu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 19:39
CPC Classifications
G; G09; G09F; G09F5/00; G09F5/04

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 261 words
A hue comparison device, comprising: means for substantially precise identification of a hue by a hue angle, hue chroma and hue depth value, said identification means comprising: a plurality of hue sheets arranged in a three-dimensional structure, each said hue sheet including: (a) a central standard gray area located in the center of said hue sheet, and (b) a plurality of hue blocks filled with respective hues displayed on said each hue sheet, each of said hue blocks occupying a predetermined angular position on said hue sheet with the hue angle thereof corresponding to said angular position identifying a particular spectrum area of the hue filling said hue block, wherein said hue blocks are arranged on said hue sheet in a plurality of coaxial hue circles surrounding said central standard gray area, with hue blocks of the same hue circle being equidistantly displaced from said central standard gray area and having the same chroma parameter, wherein said chroma parameter of the hue circles increases in predetermined increments in the direction from the center to periphery of said hue sheet, wherein the difference in the number of the hue blocks in adjacent hue circles equals six hue blocks, wherein said standard gray is being obtained as a result of mixing together of at least three hues of the hue blocks spaced equidistantly on the same hue circle, and wherein, in said three-dimensional structure, said hue sheets being arranged in a predetermined order with said central standard gray area changing from the darkest to the lightest in predetermined increments of the standard gray.
Claim 2
Dependent Claim 261 words
A hue comparison device, comprising: means for substantially precise identification of a hue by a hue angle, hue chroma and hue depth value, said identification means comprising: a plurality of hue sheets arranged in a three-dimensional structure, each said hue sheet including: (a) a central standard gray area located in the center of said hue sheet, and (b) a plurality of hue blocks filled with respective hues displayed on said each hue sheet, each of said hue blocks occupying a predetermined angular position on said hue sheet with the hue angle thereof corresponding to said angular position identifying a particular spectrum area of the hue filling said hue block, wherein said hue blocks are arranged on said hue sheet in a plurality of coaxial hue circles surrounding said central standard gray area, with hue blocks of the same hue circle being equidistantly displaced from said central standard gray area and having the same chroma parameter, wherein said chroma parameter of the hue circles increases in predetermined increments in the direction from the center to periphery of said hue sheet, wherein the difference in the number of the hue blocks in adjacent hue circles equals six hue blocks, wherein said standard gray is being obtained as a result of mixing together of at least three hues of the hue blocks spaced equidistantly on the same hue circle, and wherein, in said three-dimensional structure, said hue sheets being arranged in a predetermined order with said central standard gray area changing from the darkest to the lightest in predetermined increments of the standard gray.
Claim 3
Dependent Claim 103 words
The hue comparison device of claim 1 further comprising: a plurality of rectangular sheets having a plurality of hue blocks filled with respective hues displayed thereon, a hue angle scale extending horizontally at the top of each rectangular sheet, a hue chroma scale extending in parallel to said hue angle scale and adjacent thereto, and a depth value scale intersecting with said hue angle and hue chroma scales and extending from the top to the bottom of said rectangular sheet, whereby each hue being identified by position of a respective hue block relative to said hue angle, hue chroma and depth value scales.
Claim 4
Dependent Claim 50 words
The hue comparison device of claim 1 , wherein each hue is further identified by a hue number displayed inside of a respective hue block, with said hue angle displayed beneath said respective hue block, and said hue chroma displayed at at least one side of said respective hue block.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2004-05-21 2004-11-20 2005-05-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2008-05-21 2008-11-20 2009-05-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2012-05-21 2012-11-20 2013-05-22 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag