Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Reexamination Certificate
1998-03-17
2001-01-30
Hjerpe, Richard A. (Department: 2774)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
36
Reexamination Certificate
active
06181319
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of displaying a scattergram. More particularly, the present invention relates to a method of displaying a two-dimensional distribution of particles measured by a particle measuring apparatus.
2. Description of the Related Arts
Heretofore, there is known a method or apparatus for measuring a plurality of particles by a particle measuring apparatus, preparing a two-dimensional scattergram showing a particle distribution on the basis of parameters obtained from each of the particles, classifying the particles on the scattergram into, for example, a leukocyte group, erythrocyte group and epithelial cell group, and displaying the groups in different colors.
Also, a method or apparatus is known in which particles on a two-dimensional scattergram are displayed for classification by means of contour lines (See, for example, U.S. Pat. No. 5,137,809).
However, such conventional methods raise a problem that it is difficult to grasp the quantitative characteristics of the particles from the scattergram because the frequency information is not clearly displayed on the scattergram.
SUMMARY OF THE INVENTION
The present invention has been made in view of these circumstances and the purpose thereof is to provide a method in which the information from the scattergram is easy to grasp by displaying with different colors the frequencies of the particles distributed on the scattergram.
Accordingly, the present invention provides a method of displaying a scattergram, comprising the steps of: measuring a plurality of particles with a particle measuring apparatus; preparing distribution data representing a frequency distribution of the particles on a two-dimensional coordinate plane based on a pair of parameters obtained from each of the particles; displaying a scattergram based on the distribution data on a color display device having pixels by allowing the coordinates of a particle to correspond to a pixel, each of the pixels being made of three fundamental color luminescent components; allowing a luminance of each of the three fundamental color luminescent components to correspond to a frequency of the particles on the scattergram; and displaying the frequencies of the particles in different colors.
REFERENCES:
patent: 5137809 (1992-08-01), Loken et al.
patent: 5532943 (1996-07-01), Asano et al.
patent: 5605805 (1997-02-01), Verwer et al.
patent: 5824269 (1998-10-01), Kosaka et al.
patent: 5945293 (1999-08-01), Siiman et al.
patent: 5959607 (1999-09-01), Montijo
patent: 3-131756 (1991-06-01), None
Fujita Kyozo
Kanai Kazuyuki
Numada Shigehiro
Hjerpe Richard A.
Nguyen Kevin M.
Sysmex Corporation
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