JPH04125720A - Coordinate detector - Google Patents

Abstract

PURPOSE:To obtain an inexpensive and simple coordinate detector by providing the coordinate detector in a case where a micro-computer, a video interface, etc., are stored, and also providing a storage medium capable of storing a program for desired display on a home television so that this medium can be freely attachable/dettachable to and from this case. CONSTITUTION:A tablet 2, a pen exciting circuit 4, a coordinate detecting circuit 5, a microcomputer 6, and a video interface 8 are stored in a case 1. A stylus pen 3, an application storage medium 7, and a home television 10 are connected to connection terminals T1,T2, and T3 of the case 1. For example, an application storage medium 70 for 'drawing' is connected to the terminal T2. Areas 21,22 and 23 for selection of colors, line classification, erasers, etc., are provided on a sheet of paper 20 of the tablet 2. A child can use the pen 3 and the sheet of paper 20 to draw a picture on the television 10 while selecting colors, line classifications, etc., in areas 21 to 23.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coordinate detection device that detects the coordinates of a position on a tablet when a position on a tablet is indicated with an indicator such as a stylus pen.

(Prior Art) A coordinate detection device is a coordinate detection device that, when a pointer such as a stylus pen or a cursor is used to indicate an arbitrary position on a tablet on which a conductive wire is laid in a predetermined manner, a magnetic field generated by the pointer is generated in the conductive wire. This device uses a coordinate detection circuit to detect the induced voltage, and based on this, a microcomputer calculates the coordinates of the position.

The coordinates obtained by the coordinate detection device are stored in a storage section, and after being subjected to software processing by a host computer, they are displayed on a display device.

[Problem to be solved by the invention]

Due to its functionality, the coordinate detection device described above can perform various processes such as drawing a line, moving a figure, and connecting multiple points with a straight line. However, in order to use the above functions, an expensive computer is required, and
It required a considerable amount of knowledge about computers and was difficult to use in a typical household.

The purpose of the present invention is to solve the problems in the above-mentioned prior art,
To provide a coordinate detection device that can be easily used even at home.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a tablet on which a conductive wire is laid in a predetermined manner, an indicator that indicates an arbitrary position on the tough left, and a coordinate of the position indicated by the indicator. A coordinate detection device comprising: a detection circuit that calculates the coordinates based on the output of the detection circuit; and a case that houses the tablet, the detection circuit, and the microcomputer, the case being detachable from the case. a storage medium that stores a program that uses the detected coordinates and controls the microcomputer to display a desired display on the home television; A video interface for converting into a video signal is provided.

[Effect]

A plurality of storage media are prepared depending on the purpose, such as children's "drawing", education, games, etc., and these are selected according to the purpose and attached to the case. The microcomputer creates a required signal according to the detected coordinates and the program stored in the storage medium, and the created signal is processed by the video interface. When this processed signal is input to a home television, a desired display is produced.

〔Example〕

Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a block diagram of a coordinate detection device according to an embodiment of the present invention. In the figure, 1 is a case of the coordinate detection device, 2 is a tablet, 3 is a stylus pen, 4 is a pen excitation circuit that supplies an alternating current to a coil provided in the stylus pen 3;
5 is a coordinate detection circuit that receives signals from the tablet 2 and detects coordinates, and 6 is a microcomputer. Reference numeral 7 denotes an application storage medium in which a program for displaying a desired display on the home television is stored, and 8 is a video interface that converts the output signal of the microcomputer 6 into a signal for display on the home television.

T, , T, , and T3 are connection terminals provided in the case 1, among which the terminal T+ is connected to the stylus pen 3.
Terminal T2 is for connecting the application storage medium 7 to the pen excitation circuit 4.
The terminal T3 is for connecting the video interface 8 and a home television.

Next, the operation of this embodiment will be explained with reference to FIG. FIG. 2 is a perspective view of the coordinate detection device and the home television. In the figure, parts that are the same as or equivalent to those shown in FIG. 1 are given the same reference numerals and their explanations will be omitted. 10 is a home television; 11 is a cable connecting the terminal T3 and the home television 10; 2o is a piece of paper positioned and placed on the tablet 2. Areas 21, 22, and 23 are provided on Gio 2o, various colors are arranged on area 21, lines of various thicknesses are written on area 22, and erasers are written on area 23. is listed.

Reference numeral 70 indicates an application storage medium for "drawing".

Here, the tip of the stylus pen 3 is configured into a writing instrument such as a pencil lead or a ballpoint pen. Now, “Drawing”
When doing this, the child draws a picture A on a piece of paper 20 with a stylus pen 3. The microcomputer 6 calculates the coordinates through which the stylus pen 3 passes by drawing the picture A. Furthermore, while drawing this picture A, the child uses the stylus pen 3 to select and instruct lines of a desired thickness from among the lines of various thicknesses drawn in the area 22, and also selects and instructs lines arranged in the area 21. Since the picture A is drawn while specifying a desired color among the colors, selection signals for these lines and colors are also taken out to the microcomputer 6. Application storage medium 7o
outputs a signal for display to the video interface 8 via the microcomputer 6 using the detected coordinates and selection signal. The video interface 8 converts this into a signal for display on the home television 10 and outputs it to the home television 10. By such means, the pictures drawn on the screen 20 are sequentially displayed on the home television 10, and "drawing" is performed.

Note that erasing of erroneous lines and colors is performed by using the stylus pen 3 to indicate the area 23 and the location to be erased.

In this way, in this embodiment, a storage medium for an application for "drawing" is installed, a signal is created using detected coordinates and selection signals according to the program, and this is converted using a video interface. So,
To enable "drawing" using a home television as if you were actually holding a pen, without using an expensive computer or requiring any special knowledge. Also, in "Drawing", it is also possible to fill in the required part.

FIG. 3 is a perspective view of the coordinate detection device and the home television. In the figure, the same parts as the second M are given the same reference numerals. 31 is a switch provided on the stylus pen 3, and 71 is a storage medium for a game application. In this embodiment, square, triangular, and circular figures B, C, and D are drawn on the girth 20. When the operator points, for example, square B on the paper 20 with the stylus pen 3, this square is displayed on the home television 10, and then the stylus pen 3 is moved to an arbitrary position on the paper 20 (on the tablet 2). When the user moves to , the square on the home television 10 also moves accordingly, and when the switch 31 is pressed at that position, the square displayed on the home television 10 is fixed at that position. By repeating this operation, a game in which blocks are piled up on the home television 10 can be played. These operations are controlled by the application storage medium 71. In this embodiment as well, games can be played inexpensively and easily using a home television.

By exchanging the application storage medium, various games such as a maze game, a stroke order check, etc., and education can be performed.

〔Effect of the invention〕

As described above, in the present invention, various storage media storing necessary programs and a video interface are provided, so that the coordinate detection device can be used without using an expensive computer or without special knowledge. Displays for education, games, etc. can be displayed on a home television based on input from the computer.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a coordinate detection device according to an embodiment of the present invention, and FIGS. 2 and 3 are perspective views of the coordinate detection device and a home television. 1... Case, 2... Tablet, 3
... Stylus pen, 6 ... Microcomputer, 7 ... Storage medium for application, 8 ... Video interface, T, ~T
3...Terminal.

Claims (1)

[Claims] A tablet on which conductive wires are laid in a predetermined manner, an indicator that indicates an arbitrary position on the tablet, a detection circuit that detects the coordinates of the position indicated by the indicator, and a detection circuit based on the output of this detection circuit. A coordinate detection device comprising: a microcomputer that calculates the coordinates using the detected coordinates; and a case that houses the tablet, the detection circuit, and the microcomputer; A storage medium for storing a program for controlling the microcomputer to display a desired display on the home television, and a video interface for converting the output of the microcomputer into a video signal for the home television. A coordinate detection device characterized by: