JPS61262832A - Coordinate input device - Google Patents

Abstract

PURPOSE:To detect easily and securely the direction and quantity in terms of phase moving of a coordinate indicator on a coordinate board by constituting the coordinate board and the coordinate indicator so that each coordinate point can be identified from each coordinate point in the vicinity. CONSTITUTION:On the coordinate board 1 at least nine sections 2 where code patterns corresponding to numeric 1-9, for instance, are arrayed in a matrix to constitute rectangular area 3. It is repeatedly arrayed in a matrix. In this case, the code patterns, which the coordinate indicator 4 indicates next time together with its shift, have nine '1'-'9', including the case where the indicator 4 does not move. Accordingly code patterns before the shift are compared with those after the shift, whereby at least nine coordinate shifts can be identified with the aid of a change in the code patterns before and after the shift and the presence or absence of the change.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a coordinate human-powered device that is attached to a -L machine such as an information processing device and manually inputs coordinate information of a moving body, and in particular,
It is possible to obtain highly accurate coordinate information without being affected by external disturbances using a device with an inexpensive configuration.

[Prior art] Conventional coordinate input devices of this type include those that detect the movement of coordinates from the rolling of a pole, and those that detect the magnitude of voltage drop due to resistance between coordinate points when current is uniformly passed between the coordinate points. There are various methods such as electromagnetic induction method and magnetostrictive effect method in addition to methods that obtain moving coordinate values from the ground, but methods that mechanically detect coordinate movement have problems such as durability and accuracy. ! Electromagnetically detects coordinate transfer acid.
The fj type has the disadvantage that it is easily influenced by disturbances.

[1-1] An object of the present invention is 1- to provide an inexpensive coordinate input device that eliminates the above-mentioned drawbacks of the conventional technology and that can provide highly accurate coordinate information without being affected by external disturbances. be.

[Summary of the Invention 1] The coordinate input device of the present invention has a coordinate board and a coordinate indicator configured in such a manner that each coordinate point is identified from each surrounding coordinate point. The direction and direction of relative movement of the object can be detected easily and reliably.

[Embodiment 1] Hereinafter, the present invention will be described in detail by way of an embodiment with reference to the drawings.

First, FIG. 1 shows the external appearance of an embodiment of a coordinate board and a coordinate indicator, which constitute the essential parts of the coordinate system of the present invention. That is,
The device of the present invention calculates the coordinates based on the changes accompanying the movement of the code pattern of each 1%-stroke 2 read by the coordinate indicator 4 of the coordinate board 11- which has sections 2 each having a different code pattern arranged in a matrix. Detect movement information 1
7. Send the coordinate information to the host I side as serial data (iX
It is configured to transfer as ``j''.

A part of the coordinate plate 1 in this embodiment is enlarged and shown in FIG. That is, on the coordinate plate 11-, for example, the numerical value ゛°
A minimum of nine sections 2 each depicting a different pattern such as a code pattern corresponding to 1°° to 9'' are arranged in a 3 x 3 matrix 1. The rectangular areas 3 are further arranged repeatedly in a matrix. Therefore, the coordinate plate 11
For example, nine types of code patterns are repeatedly and regularly arranged in the vertical, horizontal, and diagonal directions.

・A cross section showing the configuration of the coordinate indicator 4 that moves the force and the coordinate plate IL to indicate the coordinates corresponding to each section 2 is shown in FIG. That is, inside the coordinate finger 4 there is a coordinate plate l.
] - The code pattern of the illuminated image 2 is read by the light receiving sensor 6 combined with the light emitting element f5 for illuminating the code pattern drawn on the image 2. As the light-emitting element f5, for example, an LE port, a tungsten lamp semiconductor, a laser element f, etc. can be directly incorporated into the coordinate indicator 4, or the coordinate indicator can be connected to the coordinate indicator using the light-emitting element r5 as a light source through a fiberscope or the like. 4 to illuminate the code pattern. Further, as the light receiving sensor 6, for example, an area sensor made of a CCU or MOS is used so that the read code pattern of each section 2 can be identified.

Next, the principle of operation for detecting coordinate movement information using the combination of the coordinate plate 1 and the coordinate indicator 4 as described below will be explained with reference to FIG. 4 and Table 1.

Assuming that the coordinate indicator 4 is now pointing to section 2 in which the code pattern °°1 pa is drawn, as shown in FIG. 4, the next code pattern that the coordinate indicator 4 points to as it moves is:
Including the case where the coordinate indicator 4 did not move, there are 9 ways from °l'' to °゛9°'. Therefore, by comparing the code patterns read before and after the movement, the coordinate indicator 4 can be determined before and after the movement. As shown in Table 1, at least nine coordinate movements in the X-Y matrix are identified and C is determined.

Table 1 An example of the configuration of a circuit device for detecting such coordinate movement information according to the present invention is shown in FIG. For example 1. A pattern reading section 7 consisting of a coordinate plate l and a coordinate indicator 4 configured as described above.
The raw data 15 read by is recognized by the pattern identification unit 8 as a specific code pattern 16 and L7, for example, and then converted into a new code 117 representing the coordinates of the current position of the coordinate indicator 4 in the code conversion unit 9. . This new coat 17 is supplied to the comparison section 11, and is guided to the 10 and latched, and at the same time, the new coat 17 is supplied to the 111 which has already been launched.
The code 18 is taken out and supplied to the comparison section 11. Comparison part 1
1, compare the new 111 cars I・17 and 18] 7. -1, 0, which represents the motion 1ΔX in the X direction.
+l X coordinate fl#] 9A and unit movement in Y direction jl
-1, 0, +1 (7) Y coordinate values 19B representing .DELTA.Y are guided to an X counter 12A and a Y counter 12B, respectively, where they are amplified or counted down, respectively. The X coordinate movement φ2 due to the accumulation of such unit movement stars
0A and Y coordinate movement μ20B to host i.e. “@I
The parallel code is supplied in parallel to a parallel/serial (P/S) converter 13 according to the read pulse 21 from 4, and the serial code signal 22 converted from the parallel code is sent to the host (14) as required coordinate information. .

In the embodiment 1.0 described above, the light receiving sensor 6 was installed in the coordinate indicator 4 to directly receive and identify the code pattern of the section 2, but the light receiving sensor 6 was installed outside through an optical fiber scope. For example, it may be configured to lead to a charging conversion element such as an area sensor made of COD or MOS, or a plurality of photodiodes. With this configuration, the degree of freedom in arranging the light receiving sensor 6 increases,
Not only is the installation easy to adjust, but the shape ζJρ of the coordinate indicator 4 can also be set arbitrarily.

In addition, in the following explanation, there are eight directions of coordinate movement detected by the coordinate indicator 4, for example from code pattern "l" to "211-1'8"; It is also possible to read the coat patterns of the sections at the same time with weights, and to recognize the coordinate movement in the middle direction of the 218-picture, or even in the roundabout direction of the 218-picture, thereby saving one man-hour. can.

Furthermore, by creating multiple micro-divisions corresponding to each coordinate point and drawing identification patterns such as different code patterns on each of these micro-divisions, it is possible to identify the direction of coordinate movement and stars in more detail. I can do it too.

[Effect] As is clear from the explanation in -1- below, the human-powered coordinate system of the present invention performs optical coordinate detection by reading a different pattern for each coordinate point drawn on the coordinate board. As a result, not only is there no mechanical wear, but there is also no electromagnetic disturbance, such as noise. There is also the effect that it can be increased.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the external appearance of a coordinate board and a coordinate indicator that constitute the main parts of the coordinate input device of the present invention, and FIG. 2 is a diagram showing an example of the configuration of the coordinate board. Figure 3 is a sectional view showing an example of the configuration of the coordinate indicator, Figure 4 is a line section showing the principle of operation for detecting coordinate movement, and Figure 5 is a circuit configuration for detecting coordinate movement. FIG. 2 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Coordinate board, 2... Division, 3... Rectangular area, 4... Coordinate indicator, 5... Light emitting element-r, 6... Light receiving sensor, 7... Reading part , 8... Recognition section, 9... Code conversion section, 10... U/NC, 11... Comparison section, 12A, 12B... Counter, 13... P/S conversion section, 14 ...Host system (main machine). Figure 2

Claims (1)

[Claims] 1) A coordinate plate in which a rectangular area in which at least nine sections each having a different pattern corresponding to each coordinate point are arranged in a matrix is further repeatedly arranged in a matrix, and a light emitting element is combined to produce the pattern. a coordinate indicator with a built-in light-receiving sensor that optically reads the coordinates; and a coordinate indicator that identifies the pattern read by the light-receiving sensor and determines relative movement of the coordinate indicator on the coordinate board based on changes in the subsequently identified pattern. A coordinate input device comprising: coordinate detection means for detecting direction and amount.