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Behavior Modification Wristwatch
A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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US Patent 5111310 - Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
US Patent Issued on May 5, 1992
Estimated Patent Expiration Date:
December 4, 2010Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
December 4, 2010Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method of and system for rendering a halftone image of a gray scale image by utilizing a pixel-by-pixel comparison of the gray scale image against a blue noise mask is disclosed in which the gray scale image is scanned on a pixel-by-pixel basis and compared on a pixel-by-pixel basis to an array of corresponding data points contained in a blue noise mask stored in a PROM or computer memory in order to produce the desired halftoned image. Both digital and optically implemented halftone methods are disclosed.Other References
| InventorsAssigneeApplicationNo. 622056 filed on 12/04/1990US Classes:358/3.19Stochastic or random ditheringField of Search358/465, Picture signal thresholding358/463, Noise elimination358/464To distinguish intelligence from backgroundExaminersPrimary: Brinich, StephenAttorney, Agent or FirmUS Patent References4425642, Simultaneous transmission of two information signals within a band-limited communications channelIssued on: 01/10/1984 Inventor: Moses , et al.4698691, Halftone image processing method Issued on: 10/06/1987 Inventor: Suzuki , et al.4736254, Method and apparatus for generating pseudo-halftone dots by comparing gray scale values of an original with dither threshold values stored in cells of a matrix array divided into imaginary matrices of elemental areas each containing one cell Issued on: 04/05/1988 Inventor: Kotera , et al.4800442, Apparatus for generating an image from a digital video signal Issued on: 01/24/1989 Inventor: Riseman, deceased , et al.4819075, Solid state imaging apparatus with means for controlling signal accumulation period Issued on: 04/04/1989 Inventor: Imaide , et al.4912569, Method for thresholding an image signal Issued on: 03/27/1990 Inventor: Petilli4920501Digital halftoning with minimum visual modulation patterns Issued on: 04/24/1990 Inventor: Sullivan, et al. International ClassH04N 001/40 |
