Patent ID: 6833844
Filing Date: 2004-12-21
Classification: G01C,G06T,G08G

Abstract:
A system display apparatus configured to generate and display a system diagram based on an information related to a system, comprising:a database configured to store a first information of an equipment related to said system; a screen display information memory configured to store a second information related to said system, wherein said first information is different from said second information; a display scale calculating unit configured to obtain maximum and minimum coordinates in horizontal and vertical directions of said system diagram to be displayed, said display scale calculating unit automatically calculating a display scale of said system diagram from said maximum and minimum coordinates and a size of a display screen from said first information and said second information, said display scale calculating unit comprising: a distribution line number coincidence judging unit configured to judge whether or not a distribution line number, and said information that is displayed, stored in said screen display information memory coincides with said distribution line number, and said information related to an equipment that is stored in said data base and wherein said equipment is connected to distribution lines of said system; an X-coordinate obtaining unit configured to obtain maximum and minimum values of an X-coordinate of said equipment which is judged to have said distribution line number coincide by said distribution line number coincidence judging unit from a coordinate data stored in said data base; a Y-coordinate obtaining unit configured-to obtain maximum and minimum values of a Y-coordinate of said equipment which is judged to have said distribution line number coincide by said distribution line number coincidence judging unit from a coordinate data stored in said data base; a scale calculating unit configured to automatically calculate said display scale from said maximum and minimum values of said X-coordinate and said Y-coordinate obtained from all of said equipments which are judged to have said distribution line number coincide and from a size of said display screen; and a determining unit configured to display a scale for displaying said system diagram based on a relationship of size of said display scales on said X-coordinate side and said Y-coordinate side calculated by said scale calculating unit and a relationship between said display scale on said X-coordinate side and said Y-coordinate side and a scale threshold value set; and a system screen displaying unit configured to generate and display the system diagram to be displayed based on said display scale calculated by said display scale calculating unit.