JPS6184727A - Coordinates indicating device - Google Patents

Abstract

PURPOSE:To make a composition easy and to improve a visible characteristic by indicating a position on the coordinates with two light sources which can be shifted respectively in the X and Y shaft directions. CONSTITUTION:A coordinates indicating device is provided with light sources 107 and 112 to irradiate a laser light of the visible light to X and Y coordinates on a display surface 101 and an intersection of the light path goes to indicated coordinates. A laser light is guided from a laser 102 through an optical fiber 103 to both light sources 107 and 112 by a distributing device 104 at respective optical fibers 105 and 106. Both light sources 107 and 112 are shifted by respective motors 108 and 113 along guide rails 109 and 114. Thus, both motors 108 and 113 are driven an controlled by a driving circuit, and the indicating coordinates, the intersection, can be set to the free position.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a coordinate indicating device.

[Prior Art] Conventionally, a light pen is known as a display device as this type of device. However, although this is effective for CRT displays, it is difficult to use for other display devices.

Regarding coordinate input devices such as digitizers, sensors are placed over the entire coordinate reading area, and the coordinates are determined by pointing a book from above using a graphic pen or the like. However, since this method requires a sensor to be placed in the reading area F, it is impossible to implement it in a device that cannot have such a structure. [Objective] The purpose of the present invention is to Eliminating the drawbacks of the conventional example,
It is an object of the present invention to provide a coordinate indicating device that can be adapted to any structure and has a relatively simple configuration.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

Figures 1 to 4 show an embodiment of the present invention. Figure 1 is a configuration diagram of essential parts of an embodiment of the present invention, Figure 2 is a front view of the potentiometer, and Figure 3 is a diagram of the potentiometer. The perspective view and FIG. 4 are circuit block diagrams of one embodiment of the present invention.

In FIG. 1, 101 is a display surface, 102 is a He-Ne laser that emits visible light and has good spatial coherence, 103 is an optical fiber that guides the laser beam from the laser 102, and 104 is an optical distributor connected to the optical fiber 102. , 105 and lO6 are optical fibers connected to the optical distributor 104 and guiding the distributed light.

107 and 112 are optical fibers 105 and 10
A light source for irradiating the laser beam guided by 13 parallel to the display surface 101 and so close that the optical path can be seen by the scattered light, and indicating the coordinates by the intersection of the mutual optical paths;
108 and 113 are motors as driving sources for moving the light sources 107 and 112; 109 and 114;
have potentiometers, light sources 107 and 11
2 guide rails, 110 and 115 are light sources 107
The wires 111 and 116 are pulleys connected to and 112 to move them. wire 1
10 and 115 are connected to pulleys 111 and 116 and motors 108 and 113, and when the motors 108 and 113 are driven, the light source 10? and 1
12 moves along guide rails 108 and 114.

FIG. 2 shows the potentiometers on the guide rails 109 and 114, 201 is a resistor coated on the board, 202 is a conductor pasted on the board, 2
03 is a lead wire connected to GND.

204 is a lead wire connected to Vcc (+ voltage source);
205 is a lead wire connected to the input of an A/D converter (described later).

FIG. 3 shows a metal piece attached to light sources 107 and 112 in a potentiometer. This metal piece 301 shorts resistor 201 and conductor 202 and connects the A/D converter via lead wire 205. A voltage corresponding to the position on the X-axis or Y-axis is input as DATA to the devices 418 and 418 (shown in the fourth figure).

FIG. 4 is a circuit block diagram of this embodiment, where 401 is a control circuit, 402 is a switch (SW5) that moves the X-narrow light source 107 to the right, and 403 is a switch that moves the X-narrow light source 107 to the left. (SW4).

404 is a switch (SW3) that moves the Y narrow light source 112 upward, 405 is a switch (SW2) that moves the Y narrow light source 112 downward, and 412 is used to operate the device of this embodiment (but is not a power switch). ) switch (
SW 1).

40B and 407 are normal rotation and reverse rotation signal lines of the X-axis top drive circuit 408, 408 and 110 are normal rotation and reverse rotation signal lines of the Y-axis top drive circuit 411, and 413 is a He-N
e 0N10FF control line of the laser 102, 414 is a control line from the control circuit 401 to the arithmetic circuit 415, 41
6 and 418 are guide rails 109 and 114, respectively.
A/D conversion circuit for the voltage from the potentiometer, 4
17 and 418 are A/D conversion circuits 416 and 418
420 is an XY coordinate output line from the device of this embodiment to other equipment, and 421 is a power switch. The operation of this embodiment will be explained below with reference to FIG. The device is started by the vehicle closing the power switch 421, and when the switch (SWI) 412 is further closed, the He-Ne laser 102 is activated via the control line 413.
oscillates.

So switch (SW2) 405 ~ switch (SW5
), the X-axis motor drive circuit 408 or the Y-axis motor drive circuit 411 is operated via any of the control lines 406 to 410, and the motor 10
8 or the rotation of the motor +13 moves the light source 107 or 112, and the indicated coordinates, which are the intersections thereof, are determined at an arbitrary position.

At this time, the voltage from the potentiometers of guide rails 109 and 114 is
The digital data is input to A/[] converters 416 and 418 via data lines 417 and 41.
9, it is input to the arithmetic circuit 415.

When the motor 108 or 113 stops, that is, when the designated coordinates are determined, the coordinate data that is being input to the arithmetic circuit 415 at that time is outputted to the outside via the coordinate data output line 420 via the control line 414. do.

Furthermore, when the indicated coordinates are changed again by switch (SW2) 405 to switch (SW5) 402, the output of coordinate data output line 420 is
Until motor 08 or 113 stops, the data up to that point is retained, and when motor 108 or 113 stops,
Output new coordinate data in the same way as above.

Note that when switch (SWI) 412 is opened, control line 4
Via 13, the oscillation of the He-Ne laser 102 is stopped. At the same time, Sinch (SW2) 405~
It is assumed that even if any switch of the switch (SW5) 402 is pressed, no output is output from the control lines 408 to 410. This serves the purpose of erasing the line caused by the laser beam from the display surface 101 and also ensuring safety by stopping oscillation when it is not needed since laser beams are highly dangerous.

Furthermore, when the laser 102 is oscillating, the display surface 101
You can take measures such as covering the entire area with force/hekalas.

[Effects] As explained above, according to the present invention, it is possible to provide a coordinate indicating device that has a simple device configuration and a simple circuit configuration, and has excellent visibility in which both the X-axis and Y-axis can be confirmed as optical paths. .

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention. Figure 1 is a configuration diagram of essential parts of an embodiment of the present invention, Figure 2 is a front view of the potentiometer, and Figure 3 is a diagram of the potentiometer. The perspective view and FIG. 4 are circuit block diagrams of one embodiment of the present invention. 101... Display surface, 102... Laser, 107.112... Light source, 109, 114... Potentiometer, 401...
...Control circuit, 415...Arithmetic circuit, 418.418...A/D converter.

Claims (1)

[Claims] 2 movable in the X-axis direction and the Y-axis direction on the display surface, respectively.
one light source; a position detection means for detecting the corresponding axial position of the light source; and based on the detection result of the position detection means, the X-axis and the A coordinate indicating device comprising means for outputting a position on a Y-axis coordinate to the outside as coordinate data.