JPH0630044B2 - Coordinate input device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coordinate input device which can be used as a control panel for menu-based processing using a tablet and a program input device.

Configuration of Conventional Example and Problems Thereof In recent years, a coordinate input device has been widely used as an input device such as a personal computer and a document creation device.

A conventional coordinate input device will be described below with reference to the drawings. FIG. 1 is a block diagram of a conventional coordinate input device,
1 is a pen, 2 is a tablet surface for inputting the coordinate position of the pen, 3 is a switch that is turned on when the tip of the pen touches the tablet surface, 4 is a coordinate detection device that detects the coordinate position of the pen, and 5 is a switch. An interrupt signal generator that generates an interrupt signal from off to on, 6 is an input / output unit that transfers the detected coordinate value and the interrupt signal, and 7 is a CPU that processes the transferred coordinate value.

The operation of the coordinate input device configured as described above will be described below.

First, the coordinate detection device detects the coordinate position of the pen on the tablet surface. And when the switch goes from off to on,
The interrupt signal generator generates an interrupt signal for requesting processing to the CPU. When the CPU receives the interrupt signal, it performs a specific operation on the detected coordinates.

Here, the tablet menu method will be described. It is called a tablet menu method that divides an area into a part or the whole of the tablet surface and assigns an operation instruction to a specific CPU to that area, and it is provided with a function instead of a keyboard. Is. The operation of the conventional coordinate input device in the tablet menu system will be described. When the pen is brought into an arbitrary menu area, the coordinate detecting device detects the coordinate position of the pen. Then, when the pen is turned from off to on, the interrupt signal generator generates an interrupt signal for requesting processing to the CPU. When the CPU receives the interrupt signal, it performs a specific operation corresponding to the menu area including the detected coordinates.

However, in the above-mentioned configuration, when the interrupt signal is used as the selection signal of the menu, in order to continuously select the same menu, the switch of the pen has to be turned on and off repeatedly, It has a problem that it is very difficult to use as an input device for characters and symbols such as programs.

OBJECT OF THE INVENTION The object of the present invention is to solve the above-mentioned problems of the prior art. It is possible to easily perform single or continuous selection of menus, and to enter a tablet menu type control panel such as a personal computer or a document creation device, and a program input. It is to provide a coordinate input device that can be used as a device.

The coordinate input device of the present invention includes a coordinate detection device including a tablet surface for inputting a coordinate position of a pen and a switch that is turned on by contact with the tablet surface of a pen tip, and coordinates detected by the coordinate detection device. An auto-repeat determination device that determines the generation of an interrupt signal based on a value and a switch state, and an interrupt signal generation device that generates an interrupt signal based on the determination of the auto-repeat determination device, the auto-repeat determination device Instructs the interrupt signal generator to read only one coordinate position if the switch is turned off within a certain time after the switch is turned on, and the switch is turned on. If the switch is still turned on after a certain time has elapsed, the coordinate position should be continuously read until the switch is turned off. The interrupt signal is generated by instructing the interrupt signal generator to distinguish single selection and continuous selection of the tablet menu.

Description of Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of the coordinate input device in the embodiment of the present invention. In FIG. 2, 11 is a pen, 1
2 is a tablet surface for inputting coordinate positions with a pen, 1
3 is a switch that is turned on by the contact between the pen tip and the tablet surface, 14 is a coordinate detecting device that detects the coordinate position of the pen on the tablet surface, and 15 is the generation of an interrupt signal based on the detected coordinate value and the state of the switch. An automatic repeat determination device, 16 is an interrupt signal generator that generates an interrupt signal based on the determination of the automatic repeat determination device, 17 is an input / output unit that transfers the detected coordinate value and the interrupt signal, and 18 is the transferred coordinate value. CPU processing by interrupt signal
Is.

FIG. 3 shows a tablet menu on the tablet surface in the embodiment of the present invention. In FIG. 3, 2
1 is the ABCD area, 22 is the AIUEO area, 2
3 is an area for inserting one character, 24 is an area for moving backward, 25 is an area for deleting one character, 26 is an area for canceling, and 27 is an area for inputting.

FIGS. 4a and 4b respectively show the state of the switch and the timing of the interrupt signal in the embodiment of the present invention.

The operation of the coordinate input device of the present embodiment configured as described above will be described below.

First, the pen 11 is brought into contact with the tablet surface and the switch 13
When is turned on, the coordinate position of the pen 11 is changed to the coordinate detection device 1
4 and the interrupt signal generator 16 generates one interrupt signal. If the switch 13 remains turned on as it is, the next interrupt signal is generated about 1 second after the first interrupt signal is generated. Then, an interrupt signal is generated at intervals of about 0.1 seconds until the pen leaves the tablet surface and the switch 13 is turned off. If the switch 13 is turned off within the first 1 second after the switch 13 is turned on, only the first interrupt signal is generated. By thus determining the state of the switch 13 with the auto-repeat determination device, a single interrupt signal or a continuous interrupt signal can be generated. Each time the CPU 18 receives this interrupt signal, it processes the detected coordinate value at that time.

The operation when the coordinate input device according to the present embodiment is connected to the document creation device will be specifically described using the tablet menu shown in FIG.

For example, when trying to input a character string when creating a document, 21 ABC in the tablet menu shown in FIG.
One interrupt signal is generated by moving the pen 11 to the area of D ..., the area of 22 and the area of 22 and pressing the pen 11 to turn on the switch 13. This interrupt signal causes the CPU 18 to convert the detected coordinates at that time into a character code to input a character. If the pen 11 is released within 1 second and the switch is turned off, only one character is input. If the switch 13 is turned on while the pen is being pressed, it takes about 0.1 seconds until the switch 13 is turned off. When an interrupt signal is generated at intervals, and the CPU 18 receives the interrupt signal, the detected coordinates at that time are converted into a character code, so that the same character can be continuously input.

Inputting commands such as 1 character insertion, backward movement, 1 character deletion, and cancellation, which are often performed at the time of document creation, also inserts 1 character of 23 in the tablet menu shown in FIG. 3, retracts 24, deletes 1 character of 25, 26 Take the pen 11 to the areas for canceling the
One interrupt signal is generated by pressing to turn the switch 13 from off to on. A command is input by causing the CPU 18 to convert the detected coordinates at that time into a command code by this interrupt signal. For example 25
If you press the pen in the area for deleting one character of, and then release the pen within 1 second, only one character will be deleted. If you keep the switch on with the pen still pressed, switch 13 turns off. An interrupt signal is generated at intervals of 0.1 seconds, and the CPU 18 deletes one character each time the interrupt signal is received, so that multiple characters can be deleted. Similar operations are performed for other menus.

As described above, according to the present embodiment, by controlling the generation of the interrupt signal by the determination of the auto repeat determination device 15, the coordinate input device 14 capable of easily performing the single selection and the continuous selection of the menu is realized.

EFFECTS OF THE INVENTION As is apparent from the above description, the present invention provides a coordinate detection device including a tablet surface for inputting a coordinate position of a pen and a switch that is turned on when the pen tip touches the tablet surface, and the coordinate detection device. An automatic repeat determination device that determines the generation of an interrupt signal based on the coordinate value and the switch state detected by the device, and an interrupt signal generation device that generates an interrupt signal based on the determination of the automatic repeat determination device, The auto repeat determination device instructs the interrupt signal generation device to read only one coordinate position when the switch is turned off from the off to on state within a certain time after the switch is turned on. If it is still on after a certain period of time has passed since it was turned on, the coordinate position will continue until the switch is turned off. Since the interrupt signal is generated by instructing the interrupt signal generating device to read it, it is possible to obtain an excellent effect that single selection and continuous selection of the menu can be easily performed. Due to the effect, the operability can be greatly improved, and anyone can easily use the tablet menu system as a processing control panel and a program input device.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional coordinate input device, FIG. 2 is a block diagram of a coordinate input device according to an embodiment of the present invention, and FIG.
FIG. 4 is a plan view of the tablet menu, and FIG. 4 is a timing chart showing the relationship between the switch states and interrupt signals of this embodiment. 11 ... Pen, 12 ... Tablet surface, 13 ... Switch, 1
4 ... Coordinate detection device, 15 ... Auto repeat determination device, 1
6 ... Interrupt signal generator.

Claims (1)

[Claims] 1. A coordinate detecting device comprising a tablet surface for inputting a coordinate position of a pen, a switch which is turned on by contact with the tablet surface of a pen tip, a coordinate value detected by the coordinate detecting device and a switch. An auto-repeat determination device that determines the generation of an interrupt signal based on a state, and an interrupt signal generation device that generates an interrupt signal based on the determination of the auto-repeat determination device, the auto-repeat determination device from the switch is off If it turns off within a certain period of time after being turned on, the interrupt signal generator is instructed to read only one coordinate position, and a certain period of time elapses after the switch is turned on. Even if it is still on, the interrupt signal generator is instructed to continuously read the coordinate position until the switch is turned off. A coordinate input device characterized in that the interrupt signal is generated by giving an instruction to distinguish between single selection and continuous selection of a tablet menu.