Method for controlling a drawing apparatus, a drawing apparatus

Details Method for controlling a drawing apparatus, a drawing apparatus Method for controlling a drawing apparatus, a drawing apparatus

1995-06-26

1999-09-14

Metjahic, Safet

Recorders

Record receiver deforming

346 29, 33 1M, 33 182, G05B 100, G01D 1800, G08C 2100

Patent

active

059534940

ABSTRACT:
Ruled lines printed on a graph paper g are optically detected by a vertical ruled line reading sensor and a horizontal ruled line reading sensor. Ruled line spacing Dp in a plotter coordinate system P is measured and compared with ruled line spacing Dg in the a coordinate system G of a given graph paper, and the correspondence relationship between coordinate system G of the graph paper and coordinate system P of the plotter is determined. When a drawing command is inputted, a coordinate Zc in the drawing command is treated as a coordinate Zg in the coordinate system G of the graph paper, and this coordinate Zg is converted to coordinate Zp in the coordinate system P of the plotter, using the correspondence relationship. The drawing command is then executed with respect to the converted coordinate Zp. As a result, figures or waveforms that match the ruled lines of the graph paper can be drawn. Ordinary graph paper can be used because the ruled lines are read, contributing to ease of use. Even if a graph paper with ruled line spacing that differs from the ruled line spacing in the drawing command is used, figures can be modified easily without performing complex calculations.

REFERENCES:
patent: 4216482 (1980-08-01), Mason
patent: 4459604 (1984-07-01), Kudelski et al.
patent: 5170047 (1992-12-01), Beauchamp et al.
patent: 5262797 (1993-11-01), Boeller et al.
patent: 5299290 (1994-03-01), Ostermeier
patent: 5383393 (1995-01-01), Ueda et al.
patent: 5652412 (1997-07-01), Lazzouni et al.

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