Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
308 words
An input device for a CAD system, comprising: a drafting board-like digitizer on which a scene of a display device is shown, and a first cursor device for inputting a position signal to a control apparatus, wherein an indication position of the first cursor device, which is used by an operator to indicate a point on the digitizer, on said digitizer and another indication position on the screen of the display device are made to agree with each other on the digitizer, and drafting is carried out on the screen of the display device after inputting of the position signal, the input device comprising: means for displaying graduated right angle scale lines on the screen of said display device, a second cursor device for controlling the right angle scale lines, said second cursor device being installed separately from said first cursor device, control means for moving said right angle scale lines in parallel and circularly on the screen according to an output signal of the second cursor device, a co-ordinate value multiply enlargement rate counting means for setting an enlarge indication area of a predetermined range in regard to the center of said right angle scale lines on the screen of the display device, setting an area-to-be-enlarged at the enlargement rate of the enlarge indication area, multiplying the co-ordinate value of the pattern in the area-to-be-enlarged by the enlarge rate in order to determine an enlarged co-ordinate system having a line width fixed at its original unenlarged width, display data overlapping means for composing or overlapping the enlarge display data of said co-ordinate value multiply enlargement rate counting means on ordinal display data in order to display the composite data on the screen of the display device, and memory means for temporarily storing pattern data in said enlarge indication area as pattern data of an ordinal co-ordinate system.
Claim 2
Dependent Claim
308 words
An input device for a CAD system, comprising: a drafting board-like digitizer on which a scene of a display device is shown, and a first cursor device for inputting a position signal to a control apparatus, wherein an indication position of the first cursor device, which is used by an operator to indicate a point on the digitizer, on said digitizer and another indication position on the screen of the display device are made to agree with each other on the digitizer, and drafting is carried out on the screen of the display device after inputting of the position signal, the input device comprising: means for displaying graduated right angle scale lines on the screen of said display device, a second cursor device for controlling the right angle scale lines, said second cursor device being installed separately from said first cursor device, control means for moving said right angle scale lines in parallel and circularly on the screen according to an output signal of the second cursor device, a co-ordinate value multiply enlargement rate counting means for setting an enlarge indication area of a predetermined range in regard to the center of said right angle scale lines on the screen of the display device, setting an area-to-be-enlarged at the enlargement rate of the enlarge indication area, multiplying the co-ordinate value of the pattern in the area-to-be-enlarged by the enlarge rate in order to determine an enlarged co-ordinate system having a line width fixed at its original unenlarged width, display data overlapping means for composing or overlapping the enlarge display data of said co-ordinate value multiply enlargement rate counting means on ordinal display data in order to display the composite data on the screen of the display device, and memory means for temporarily storing pattern data in said enlarge indication area as pattern data of an ordinal co-ordinate system.
Claim 3
Dependent Claim
40 words
The input device according to claim 1, wherein the enlarge indication area is adapted to be able to move by the second cursor device and the enlarge indication area is adapted to be overlapped on the original pattern and displayed.