JPH07295749A - Coordinate input device - Google Patents

Abstract

PURPOSE:To provide the coordinate input device which can display coordinate information inputted by an operator without intervention of a computer. CONSTITUTION:A coordinate detection part 1 is provided with a transparent input panel surface and outputs a position signal to a controller 2 for coordinate detection part corresponding to the input of the operator. The controller 2 for coordinate detection part converts the inputted position signal to digital coordinate data to a computer 3 and a controller 4 for display device. While receiving the coordinate data outputted from the controller 2 for coordinate detection part, the controller 4 for display device stores those coordinate data and displays a stored coordinate data group on a display device 5 in a fixed cycle. Corresponding to the output of the controller 4 for display device, the display device 5 displays a graphic. A reset switch 7 transmits a reset signal for erasing the memory of the controller 4 for display device to the controller 4 for display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer input device, and more particularly to a coordinate input device for inputting graphic information to a computer.

[0002]

2. Description of the Related Art Conventionally, a digitizer is often used as a coordinate input device for inputting graphic information to a computer. The operator gives the digitizer the coordinates of the constituent elements of the target graphic using an input pen or the like, and the digitizer outputs the coordinates to the computer as digital coordinate data. Various application software inside the computer analyzes the input coordinate data and outputs the result to an image display device (hereinafter referred to as a CRT device) connected to the computer. The operator proceeds with the coordinate input operation while confirming the contents on the CRT device.

[0003]

However, in the coordinate input device as described above, the operator must always rely on the CRT device in order to evaluate the validity of the input data. Therefore, the more complicated the input information is, the more accurate the information displayed on the CRT device must be transmitted to the operator, which increases the load on the display function of various application software. Further, the bias of the display function as described above makes the spatial limitation such as the relative position and distance between the CRT device and the coordinate input device severe.

Therefore, an object of the present invention is to provide a coordinate input device capable of displaying coordinate information input by an operator without using a computer.

[0005]

The coordinate input device of the present invention is provided with a coordinate detection unit having a transparent input board surface for inputting graphic information to a computer. A display device is provided so as to overlap below the input panel surface of the coordinate detection unit. A coordinate detecting unit controller for converting the position signal output from the coordinate detecting unit into digital coordinate data is provided. A display device controller is provided which stores and stores the coordinate data output from the controller for the coordinate detection unit, and draws a figure at a fixed cycle at a corresponding position on the display device based on the stored coordinate data group. . A reset switch for erasing the memory in the display device controller is provided.

[0006]

In the coordinate input device configured as described above, the operation of the operator is displayed as it is as a graphic on the display device which is overlapped under the coordinate input section, and the operator can display his / her operation status on the CRT device via the computer. You can check without looking. Further, since the reset switch erases the storage memory of the controller for the display device, the display device is put in the non-display state at the next drawing timing, so that the display device can be easily made non-display. Also, while it functions as an image auxiliary display device other than the CRT device for the operator, while it functions as a coordinate input device for the computer as usual, various application software of the computer can reduce the load on the display function, Along with this, the space limitation between the CRT device and the coordinate input device can be reduced.

[0007]

1 is a diagram showing an embodiment of a coordinate input device according to the present invention. In FIG. 1, reference numeral 1 is a coordinate detection unit whose input board surface is transparent. Here, a tablet with a pen is used for input. The coordinates designated by the operator are output to the coordinate detection unit controller 2 as a position signal.
The coordinate detection unit controller 2 converts the position signal into digital coordinate data and outputs it to the computer 3 and the display device controller 4. The computer 3 uses the coordinate data as input for various application software.
The display device controller 4 accumulates and stores the coordinate data from the coordinate detection unit controller 2, and draws on the display device 5 based on the accumulated and stored coordinate data group at a constant cycle. Here, as the display device 5, the display board surface is hard,
A liquid crystal display panel with a transparent display panel surface is used when there is no display.
The display board surface of the display device 5 is configured so as to be in intimate contact with and overlap under the input board surface of the coordinate detecting section 1. Further, since the board surface of the coordinate detection unit 1 and the display device 5 is transparent, the drawing 6 which is further closely attached and overlapped thereunder can be clearly seen. Reference numeral 7 is a reset switch, which is operated by an operator to display device controller 4
Send a reset signal to. Upon receiving the reset signal, the display device controller 4 erases the internal memory and becomes a non-display state at the next drawing timing.

When performing a coordinate input operation in the coordinate input device, the operator designates the coordinates of the constituent elements of FIG. 6 from the coordinate detection unit 1 with an input pen. The coordinate detection unit 1 detects the designated coordinates and outputs them as a position signal to the coordinate detection unit controller 2. The coordinate detection unit controller 2 converts the input position signal into digital coordinate data and outputs the digital coordinate data to the computer 3 and the display device controller 4. The computer 3 delivers the input coordinate data to various application software,
Execute each processing. The display device controller 4 accumulates and stores the input coordinate data, and draws on the display device 5 based on the coordinate data group that is accumulated and stored at a constant cycle. The figure drawn on the display device 5 is displayed at the coordinates designated by the operator in the coordinate detection unit 1, and the coordinate information input using the coordinate input device is overlaid and displayed on the drawing 6. Since the display device 5 is transparent in the part where the graphic is not displayed and is located at the position where it overlaps with the drawing 6, the operator can check the validity of the graphic input by the computer 3 without looking at the CRT device (not shown). , You can check. When the drawing 6 is replaced with another drawing, the display device 5
When it is necessary to refresh the display device, when the reset switch 7 is operated, a reset signal is output to the display device controller 4, the memory inside the display device controller 4 is erased, and the display device 5 is displayed at the next drawing timing. The display is turned off.

The present invention is not limited to the above embodiment. That is, the display device 5 may be a type in which pixels such as a so-called cathode ray tube emit light instead of the liquid crystal display panel. In this case, the drawing 6 is made of a material having high light transmittance, and the display device 5 is positioned so as to overlap with the bottom of the drawing 6. At this time, if the coordinate input operation is not hindered, the position of the coordinate detection unit 1 may be located between the drawing 6 and the display device 5. The light of the graphic displayed on the display device 5 passes through the drawing 6 and provides the operator with the coordinate information.

[0010]

As described above, according to the present invention, the input information can be provided to the operator without increasing the input / output load of the computer. This reduces the load on the display function of various application software of the computer, and can reduce the spatial limitation between the CRT device and the coordinate input device.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a coordinate input device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coordinate detection unit 2 Coordinate detection unit controller 3 Computer 4 Display device controller 5 Display device 6 Drawing 7 Reset switch

Claims (1)

[Claims] 1. A coordinate detecting section having a transparent input board surface for inputting graphic information to a computer, a display device installed so as to overlap below the input board surface of the coordinate detecting section, and output from the coordinate detecting section. The controller for the coordinate detecting unit that converts the generated position signal into digital coordinate data, and the coordinate data output from the controller for the coordinate detecting unit is accumulated and stored, and the display is based on the accumulated coordinate data group. A coordinate input device, comprising: a controller for a display device that draws a figure at a corresponding position of the device at a constant cycle; and a reset switch that erases the memory in the controller for the display device.