JPH022167B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method for reading handwritten multicolored figures that facilitates automatic reading of the coordinates of figures, and relates to a method for reading handwritten multicolored figures that facilitates automatic reading of the coordinates of figures, and a method for reading handwritten multicolored figures that uses magnetic materials in writing materials such as ink and pencils. The present invention relates to a method for reading handwritten multicolored figures handwritten using a writing utensil.

[Prior art]

Conventionally, figures, etc. have been drawn using writing materials such as pencils and ink, and when processing these figures, a person digitizes them using a figure data processing device, etc., and records each point of the figure on a computer etc. The position coordinates of the object were input, and the figure was processed based on this information.

By the way, in general, in drafting work, the outline of a figure is drawn with a black pencil or the like, and the inside of the figure is filled in with a colored pencil or the like to conveniently confirm the designer's idea. This also facilitates the digitizing operation for inputting the position coordinates of each point of a figure into a computer using the figure data processing device.

However, with this conventional method of drawing figures with a writing instrument and inputting them manually, the amount of digitizing work increases when the figures are complex, such as an LSI chip pattern layout diagram, and input errors occur during the input process. There were growing shortcomings.

[Summary of the invention]

This invention was made in order to prevent the above-mentioned conventional problems such as an increase in the amount of manual labor involved in digitizing figures and the introduction of input errors in the digitizing process. The coordinates of all the shapes are first detected by magnetizing and scanning the hand-drawn figures using writing utensils of multiple colors mixed with magnetic materials, and then demagnetizing one of the colors. By performing coordinate detection, the figure of the first color is identified, and by repeating the same scanning and degaussing, the figure of each color is sequentially identified. An object of the present invention is to provide a method for reading handwritten multicolored figures that can easily and automatically read the coordinates of handwritten figures.

[Embodiments of the invention]

Examples of the present invention will be described below.

FIG. 1 is for explaining the principle of an embodiment of the present invention. The writing instrument of this embodiment is a single-color pencil, and the lead, which is the writing material of the pencil, has a core as shown in the figure. Contains a magnetic material having a B (magnetic flux density)-H (magnetic field) hysteresis characteristic. Note that instead of a single-color pencil, a single-color ink may be used, and the ink may contain the magnetic substance.

To draw a monochromatic figure using the pencil or ink mixed with the magnetic substance of this embodiment, the drawing is carried out in exactly the same manner as in the conventional method. Then, each point of the figure has the above B
-H magnetic material having hysteresis characteristics is distributed.

To record the positional coordinates of this figure, the magnetic body is magnetized by a magnetizing element, and the drawing is scanned by a magnetic detection element having a function of recording the coordinate position. This allows the coordinate data of each point to be input into the computer, and as a result, the position coordinates of the figure can be easily and accurately recorded.

FIG. 2 is for explaining one embodiment of the present invention, in which a figure is drawn using two colors, for example, red and blue ink or pencil.
The writing material of each color in this example contains a magnetic substance corresponding to each color and having the B-H hysteresis characteristic shown in the figure. In the figure, 1 is a hysteresis curve of a magnetic material with a small saturation magnetic field contained in the red writing material, and 2 is a hysteresis curve of a magnetic material with a large saturation magnetic field contained in the blue writing material.

In order to draw a figure to be identified in two colors on a single drawing using the pencil of this embodiment, the drawing is carried out in exactly the same manner as in the conventional drawing. Then, a magnetic substance having a B-H hysteresis curve 1 is distributed at each point of the red figure, and a magnetic substance having a B-H hysteresis curve 2 is distributed at each point of the blue figure.

To record the position coordinates of this figure, first magnetize both magnetic bodies with a strong magnetic field that reaches saturation of the magnetic body having the B-H hysteresis curve 2 using a magnetizing element, and then record the coordinate position. This drawing is scanned by a functional magnetic detection element to detect and record the position coordinates of all the figures. Then, demagnetization is performed with a strength sufficient to eliminate the residual magnetic field of the magnetic material having the B-H hysteresis curve 1, and the same coordinate reading is performed again. In this way, the data that disappears among the first detected coordinates is red data, and the color can be easily identified, thereby making it possible to automatically read the coordinates. Note that the use of a pencil or the like mixed with a magnetic substance does not deteriorate the function of checking drawings, etc., performed by conventional designers.

In the above embodiment, an example of up to two colors was described, but
In the present invention, B-H hysteresis characteristics are different,
That is, by mixing three or more types of magnetic substances with different residual magnetic fields into colored pencils, etc., it is possible to easily obtain a writing material for a multicolored writing instrument, and by drawing a figure with the writing instrument, it is possible to create a drawing. Automatic position coordinate reading can be enabled.

〔Effect of the invention〕

As described above, according to the method for reading handwritten multicolored figures according to the present invention, it is possible to read figures handwritten using writing instruments of a plurality of colors mixed with magnetic substances having different B-H hysteresis characteristics depending on the color. , magnetize it and scan it to first detect the coordinates of all the shapes, then demagnetize one of them and detect the coordinates to identify the shape of the first color, and then repeat the same scanning and demagnetization. By repeating this, the figures of each color are sequentially identified, so that the reading of the position coordinates of the drawing can be easily automated, the reading accuracy can be improved, and the reading can be made faster.

[Brief explanation of drawings]

Figure 1 shows B of the magnetic material contained in the material of a writing instrument for monochrome drawings, for explaining the principle of the present invention.
-H magnetic hysteresis characteristic diagram. FIG. 2 is a B-H magnetic hysteresis characteristic diagram of the magnetic substance contained in the material of the writing instrument for two-color drawing used in one embodiment of the present invention. 1, 2...Remanent magnetic characteristic curve. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. A method for reading multicolored figures drawn by hand using a writing instrument in which a writing material contains a magnetic material having a different B-H hysteresis characteristic for each color, which reads all handwritten figures. Magnetize a multicolored figure with an intensity that saturates the figure, scan this drawing to detect the coordinate positions of all the figures, demagnetize the magnetic material of the color with the weakest B-H hysteresis characteristic, and then read the drawing again. The coordinate position of the figure is detected by scanning, the color of the disappeared figure is identified by detecting the disappeared data among the first detected coordinates, and the color is then identified for each figure by the same process. A unique method for reading handwritten multicolored shapes.