JPH04369016A - Input pen and simple position input device for graphic processing terminal - Google Patents

Abstract

PURPOSE:To input positional information only by moving fingers and wrists and to reduce operator's physical load by miniaturizing the position detecting part of an input pen having a transparent top and including a light emitting diode and a small sized battery in itself. CONSTITUTION:An input pen 6 is constituted of an input pen 6, a pen point 6a consisting of a transparent material such as glass and plastic, a light emitting diode LED 6b, a current restricting resistor 6c, a unit-4 battery 6d to be a small sized battery, and a switch part 6e. When the pen 6 is depressed to a protection glass 5, power is supplied from the small sized battery to the pen 6 and the spot light of the diode LED 6b is outputted from the pen point. The image of the spot light is formed on a two-dimensional CCD sensor 3 by a lens 4 and the sensor 3 transmits the image information to a control circuit 2. The circuit 2 calculates input position of the spot light from the image information obtained from the sensor 3 and informs the calculated value to a master device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple position input device for a graphic processing terminal, and more particularly to a tablet type simple position input device.

0002

[Prior Art] A conventional tablet-type simple position input device includes a tablet having a mechanism for detecting the position,
It has a pen-shaped switch to specify the position.

[0003] In terms of position detection methods between the coordinate detection surface of the tablet and the pen, there are devices such as an electromagnetic coupling method, an electric field method, a pressure sensitive method, and a capacitance coupling method. Detection lines are embedded vertically and horizontally inside the coordinate detection surface of the tablet. The resolution of the coordinate position is determined by the spacing between the detection lines, but if the spacing between the lines is made smaller to increase the resolution, crosstalk will occur. Therefore, in conventional position input devices, the size of the tablet is relatively large in order to improve the resolution. For example, the size is about 400 mm x 400 mm, and the pen-shaped switch has a cord attached.

0004

[Problems to be Solved by the Invention] As mentioned above, in the conventional tablet-type simple position input device, the tablet is large, and when moving the input position, the entire arm must be moved. Since the switch has a cord attached, there are operational restrictions. For this reason, there are disadvantages in that long-term input operations can cause significant arm fatigue, and since the device is large, it occupies a large area on the desk on which the device is placed.

An object of the present invention is to provide an input pen having a transparent tip and a light emitting diode and a small battery inside, and a two-dimensional charge coupled device (Charge Coupled Device) for spot light incident from the input pen.
e It has a control circuit that calculates the position of the spot light from the image information on the sensor (hereinafter abbreviated as CCD) and notifies the host device, and the position detection part has been miniaturized to eliminate the above drawbacks. An object of the present invention is to provide an input pen and a simple position input device for a graphic processing terminal, which can input position information only by moving a finger or wrist, thereby reducing the physical burden on an operator.

[0006]

[Means for Solving the Problems] The input pen of the first invention has a pen part with a transparent tip, and is operated by pressing the tip of the pen part with a light emitting diode and a small battery inside. It has a switch that causes the light emitting diode to emit light using the power source.

A simple position input device for a graphic processing terminal according to the second invention includes the input pen according to the first invention, and when the tip of the input pen is pressed, a light emitting diode emits light using the power source of a small battery. A protective glass through which light enters, a lens that condenses the light emitting diode spot light from the tip of the pen that enters through the protective glass, and a two-dimensional CCD sensor that forms an image of the spot light with the lens.
It has a control circuit that calculates the position of the spot light from the image information from the dimensional CCD sensor and notifies the host device of the position.

[0008]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an input pen according to an embodiment of the first invention, FIG. 1(a) is a sectional view of the input pen according to an embodiment of the first invention, and FIG. 1(b) is a sectional view of the input pen according to an embodiment of the first invention. 1 is an enlarged view of the switch part of the input pen shown in FIG. 1(a), and FIG. 2 is a configuration diagram of a simple position input device for a graphic processing terminal according to an embodiment of the second invention.

In FIG. 1, the input pen 6 according to the first embodiment of the present invention includes a pen tip 6a made of a transparent material such as glass or plastic, a light emitting diode LED 6b, a current limiting resistor 6c, and a small battery. The switch part 6e is made up of a brush a6h, a brush b6i, and a conductor 6j.

Here, when the pen tip 6a is pressed, the pen tip 6a is retracted against the spring 6f, and the conductor 6j attached to the pen tip 6a is connected to the brush a6h by the switch part 6e.
and the brush 6i, the switch is turned on, and the battery 6
A current flows from d through the current limiting resistor 6c to the LED 6b, causing the LED 6b to emit light.

Note that the cap 6g is for holding the battery 6d inside.

In FIG. 2, the simple position input device for a graphic processing terminal according to the second embodiment of the present invention includes a connector 1 that electrically connects to the terminal device, and a control circuit that detects position information and notifies the host device. 2, a two-dimensional CCD sensor 3, a lens 4, a protective glass 5, and an input pen 6.

The input pen 6 has a structure as described above, and the tip of the input pen 6 is attached to the protective glass 5.
When pressed, power is supplied from the battery 6d, and spot light from the light emitting diode LED 6b is output from the tip of the pen. This spot light is converted into two-dimensional CC by lens 4.
An image is formed on the D sensor 3, and the two-dimensional CCD sensor 3 transmits this image information to the control circuit 2. And control circuit 2
calculates the position where the spotlight has entered from the image information from the two-dimensional CCD sensor 3, and notifies the higher-level device.

Note that the tip of the input pen 6 is 0.1 mm,
In addition, when inputting position information of 600 dots horizontally and 400 dots vertically, the size of the protective glass 5 is 60 mm horizontally and 40 mm vertically.

[0016]

As explained above, the input pen and the simple position input device for a graphic processing terminal of the present invention include an input pen with a transparent tip and a light emitting diode and a small battery inside, It has a control circuit that calculates the spot light incident position from the image information on the two-dimensional CCD sensor of the spot light incident from the pen and notifies the host device, and the position detection part is miniaturized. Alternatively, positional information can be input simply by moving the wrist, which has the effect of reducing the physical burden on the operator.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an input pen according to an embodiment of the first invention. FIG. 1(a) is a sectional view of an input pen according to an embodiment of the first invention. FIG. 1(b) is an enlarged view of the switch section of the input pen of FIG. 1(a).

FIG. 2 is a configuration diagram of a simple position input device for a graphic processing terminal according to an embodiment of the second invention.

[Explanation of symbols]

1 Connector 2 Control circuit 3 Two-dimensional CCD sensor 4 Lens 5 Protective glass 6 Input pen 6a Pen tip 6b LED 6c Current limiting resistor 6d battery 6e Switch part 6f Spring 6g cap 6h Brush a 6i Brush b 6j Conductor

Claims (2)

[Claims] 1. The pen has a transparent tip, and has a light emitting diode inside, a small battery, and a switch that is activated by pressing the tip of the pen and causes the light emitting diode to emit light using the power source of the small battery. An input pen characterized by: 2. An input pen according to claim 1, a protective glass on which a light emitting diode emits light by the power source of the small battery when the tip of the input pen is pressed, and the light enters the protective glass. a lens that collects a light emitting diode spot light incident from the tip of the pen; a two-dimensional charge-coupled device sensor that forms an image of the spot light using the lens; and image information from the two-dimensional charge-coupled device sensor. A simple position input device for a graphic processing terminal, comprising a control circuit that calculates a position where the spotlight enters and notifies a higher-level device.