The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1995
Filed:
Sep. 01, 1993
Jean Bossaert, Ablis, FR;
Philippe Bodelet, Arpajon, FR;
GE Medical Systems S.A., Buc, FR;
Abstract
A method of operating a display including providing a display; acquiring an image of a structure by measuring, for each of a plurality of elements, a magnitude representing an element of the structure; providing a plurality of contrast setting control buttons including a first contrast setting button that directly and independently modifies dark parts of the image of the structure and a second contract setting button that directly and independently modifies light parts of the image of the structure; digitizing the magnitudes according to a direct mode by assigning a digitized value d representing the measured magnitude of each of the elements; displaying a direct image by assigning a luminosity l corresponding to the digitized value d of each of the elements and transmitting to the display the luminosity l of each of the elements; transforming the direct image to a transformed image by assigning to each the of elements a digital value i which corresponds to the digitized value d of each of the elements; and displaying the transformed image by assigning to each of the elements a luminosity m corresponding to the digital value i of each of the elements and transmitting to the display the luminosity m of each of the elements, the digital value d of each of the elements is converted into the digital value i of each of the elements according to a reversal function f, the reversal function f having a slope -b for zero values of d and a slope -1/a a for maximum values of d, so as to transform the darkest and the most luminous parts of the direct image, the contrast setting control buttons act directly on slope -b and slope -1/a and the reversal function f is determined on the basis of slope -b and slope -1/a.