JPH0128964B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides an interactive input means for a graphic display found in a CAD system, a map,
The present invention relates to improvements in a digitizer cursor for inputting position coordinates of a digitizer (coordinate input device) used as input means for drawing information on printed circuit boards and the like.

[Technical background of the invention and its problems]

The position detection method of the digitizer is electromagnetic induction method,
There are electrostatic induction digitizers, encoder digitizers, etc., and these digitizers use table a as shown in Figure 1.
Then, a coordinate position index point b is placed at the position where the coordinates of the information to be read on the coordinate position detection surface of this table a should be read.
and a cursor c for inputting position coordinates by inputting them together.

In addition, recently, instead of inputting the position coordinates from the original (coordinate reading target image) placed on the table a, for example, as shown in FIG. It has been considered to project an image f... onto a table a and input position coordinates g... from the projected image as the read information f'.

However, as shown in detail in Figure 2, the conventional cursor c has a cross mark i on a transparent part h of a transparent glass, transparent resin plate, etc. so that the position coordinate g can be accurately read from the top of the coordinate reading target image. , the intersection of these cross marks i is set as a coordinate position index point (hereinafter simply referred to as index point) b. Therefore, the read information projected from the top of cursor c
Regarding f′, it is difficult to focus the image because the index point b part is transparent, and
difficult to find.

Further, when working in a dark place in order to make the projected image clear, there is a problem in that alignment becomes more difficult and highly accurate position coordinates g cannot be input.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and its purpose is to enable the coordinate position index point to be clearly confirmed, and to read the coordinates with high precision even when the information to be read is given from above by projection etc. Moreover, it is an attempt to provide a digitizer cursor that can be easily used.

[Summary of the invention]

In order to achieve this object, the present invention has a configuration in which the coordinate position index point section can emit light.

[Embodiments of the invention]

The present invention will be explained below with reference to an embodiment shown in FIGS. 3 to 6. In the figure, reference numeral 1 denotes a cursor body (cursor frame), and an input coil 2 is wound within the cursor body 1 in parallel with the coordinate position detection surface 3a of the table 3. Both ends of this input coil 2 are connected to an AC signal source 4 via a switch 5 in series, and by pressing a push button 5a of the switch 5 and applying an AC signal to the input coil 2, a magnetic field is generated. . As described above, the configuration is the same as that of a normal electromagnetic induction digitizer's coordinate position detection cursor. According to the present invention, the upper surface of the cursor body of the cursor having such a structure is made opaque so that the index point portion emits light. That is, a light emitting diode 6 as a light emitting body is incorporated in the cursor body 1 so as to be located above the extension line of the winding center axis of the input coil 2, and this light emitting diode 6 is connected to a stabilizing resistor 7, a power source 8 and a switch 9. The power supply unit 10 is connected to a power supply unit 10 consisting of a series circuit.

Further, the power supply section 10 is built into the cursor main body 1, and the power supply 8 and the like can be easily replaced by removing a back cover (not shown).

Further, the switch 9 can be turned on and off by sliding a slide knob 9a placed on the top surface of the cursor body 1, so that the light-emitting diode 6 can be turned on and off by hand. Further, a cross mark 11 is drawn on the cursor body 1 corresponding to the installed position of the input coil 2, and a light emitting diode 6 is drawn at the coordinate position index point which is the intersection point.
The light-emitting part visible from the outside of the cursor body 1 is made into a minute point with a diameter of 0.03 to 0.07 m/m, which improves the visibility and positioning accuracy of the point. It's designed to be balanced. Note that 15 in the figure is a cord for connecting the input coil 2 built into the cursor body 1 and the AC signal source 4.

Next, the operation of the cursor 14 configured as described above will be explained. When reading the projected image f' from the top of the digitizer, first place the cursor 14 according to the present invention on the coordinate position detection surface 3a of the table 3 as shown in FIG. Align to the top surface. Next, move the cursor 14 on the coordinate position detection surface 3a so that the desired image position coordinate point g and the index point 12 on the upper surface of the cursor issued by the light emitting diode 6 match, and then press the button. By pressing 5a and applying an alternating current signal to the input coil 2 to generate a magnetic field, position coordinates are input. Note that the input method after positioning is no different from the input method of a normal digitizer, so a detailed explanation will be omitted.

Note that the above is one embodiment of the present invention, and the present invention is not limited thereto. For example, in the above embodiment, an electromagnetic induction type digitizer cursor is used, but an electrostatic induction type or encoder type digitizer cursor may be used. Further, although the light emitting body is a light emitting diode, other light emitting bodies may be used. Furthermore, the diameter of the light-emitting part is set to 0.03 to 0.07.
m/m, but the shape and size may be changed depending on the purpose.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

〔Effect of the invention〕

As described above, according to the present invention, a cross mark is formed on the upper surface of the digitizer cursor, which is the projection surface of the information to be read, and furthermore, the intersection of the cross marks, that is, the coordinate position index point, emits light. When the information to be read is given from above by projection on the digitizer table surface, the index position can be clearly confirmed and aligned easily and accurately, and accurate coordinate position input can be performed. In addition, in such a case, the projected image will be clearer in a dark place, but with the cursor according to the present invention, even in a dark place, the index point of the cursor will emit light, so the accuracy will be reduced. It is possible to input high coordinates. In addition, since a light emitter is provided directly at the coordinate position index point,
It is advantageous in terms of space and cost compared to a light source installed in another part that guides light.
The effect is that stable coordinate input can be performed over a long period of time without positional deviation.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a digitizer, FIG. 2 is a diagram showing the operating state of a conventional digitizer cursor, and FIGS. 3 to 6 show an embodiment of the digitizer cursor of the present invention. Fig. 3 is a schematic perspective view, Fig. 4 is a schematic plan view of main parts, and Fig. 5 is a schematic perspective view.
The figure is a schematic sectional view taken along the line of FIG. 4, and FIG. 6 is a diagram showing the operating state. 6... Light emitter, 12... Coordinate position index point, 14
...Cursor, f'... Information to be read, g... Coordinates.

Claims (1)

[Claims] 1 A coordinate position index point is provided on the top surface of the cursor, which is the projection plane of the information to be read, and the position coordinates can be input by aligning this coordinate position index point with the position where the coordinates of the information to be read are to be read. 1. A digitizer cursor comprising: a cross mark formed on the upper surface of the cursor so that the intersection point coincides with the coordinate position index point; and a light emitting body provided at the intersection point.