JP3210327B2 - Coordinate input device and electronic device having the device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a coordinate input device and an electronic device using the same.

2. Description of the Related Art Conventionally, as this type of device, as shown in FIG. 7, there is a device provided with a digitizer device such as a resistive film type for performing input and a display device integrated therewith. A user who is unfamiliar with a special input device such as a keyboard device can perform an input operation with a stylus pen, perform various arithmetic processing on it, find the coordinate position of the specified point, and reflect the processing based on it on the display device. , So that the work can be performed easily and reliably. Therefore, it is necessary to enable many function keys existing in the conventional keyboard device to be operated by one stylus pen input operation. Therefore, as shown in FIG. 7, a plurality of types of input modes can be easily switched by performing the same operation with the stylus pen or a similar operation with the stylus pen. Alternatively, as shown in FIG. 8, in order to facilitate the user's mode identification, a plurality of stylus pens are provided to correspond to several types of modes, and a switch for detecting the pen currently in use is provided in the pen holder. And determine which pen is currently being operated.

[Problems to be solved by the invention]

However, in a configuration such as the above-described conventional example, there is a tendency that advanced functions are increased by electronic devices, and inevitably,
The input mode using the stylus pen also tends to increase. Therefore, various functions have to be dealt with by dividing them into menus, and the menu selection means is multi-functional and multi-layer as shown in FIG. Therefore, although the input operation itself by the stylus pen performed by the user is simple, the number of times and the procedure are becoming complicated, and there is a problem that the operation is easily mistaken. Also, in the case of the configuration shown in FIG. 8, it is necessary to return the pen to the pen holder once and take the pen again, and a different mode is selected by inserting a different pen into the pen holder. There was a disadvantage. The present invention has been made in view of such prior art,
It is possible to determine which of the two ends of the input pen is input, and furthermore, a special code is unnecessary for the determination, and a coordinate input device excellent in operability and an input mode can be switched according to the determination. It is intended to provide a possible electronic device.

[Means for Solving the Problems]

In order to solve this problem, for example, the coordinate input device of the present invention has the following configuration. That is, in a coordinate input device that detects a pointed position by pointing a desired position on a coordinate input panel with an input pen, an input pen having a nib magnetized to S and N at both ends; A magnet plate provided and rotatably held; and a detecting means for detecting which pen point of the input pen has issued a coordinate input instruction based on a direction after rotation of the magnet plate.

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1A is a block diagram of an electronic apparatus according to the embodiment. In the figure, 100 is a CPU that controls the entire device, and 101 is a CPU 10
The ROM 102 stores an operation processing procedure of 0, a character pattern for displaying various messages, and the like.
M. Reference numeral 103 denotes an input pen coordinate input unit, the details of which will be described later. Reference numeral 104 denotes a VRAM for expanding an image to be displayed, and the images disclosed herein are sequentially read and displayed on the screen of the display unit 105. Note that the coordinate input unit 103 in the embodiment employs a resistive film method capable of making the input surface transparent, and the coordinate input unit 103 is located in front of the display screen of the display unit 105. FIG. 1B shows a configuration diagram of the coordinate input unit 103 of the embodiment. In the figure, 1 is a digitizer device, 2 is a stylus pen device, 3 and 4 are pen points magnetized to S and N respectively, 5 is a pen point input point on the digitizer device 1, and 6 is a rotatable shaft 10. The held magnet plate 7 is a slit plate which rotates integrally with the magnet plate 6 by the shaft 10 and is made of an opaque member except for the slit 7 '. 5 'is a vertical projection point of the pen point input point 5 on the same plane as the magnet plate 6, 8 is a light emitting element which emits light toward the slit plate 7, and 9 is a slit which emits light of the light emitting element 8 by rotation of the slit plate 7. A light receiving element for detecting that the portion 7 'has come to the upper portion. In the above-described configuration, in the embodiment, it is possible to specify a function twice that of the related art while using one pen 2. Hereinafter, this principle will be described. 2 to 5 show the relationship between the magnet plate 6 and the pen point input point 5 of the coordinate input unit 103 shown in FIG. 1 as viewed from directly above. 2 and 3, the S pole pen tip 3 is located at the pen tip input point 5 of the stylus pen device 2. The nib input point 5 moves on the digitizer device 1 at the angle shown by the arrow, and the magnet plate 6 rotates so that the center on the N pole side always faces the nib input point 5 at two diagonally existing locations. . At this time, the slit 7 'is always in a range where the light receiving element 9 can receive the light of the light emitting element 8. Conversely, when the N pole pen tip 4 is present on the digitizer device 1, as shown in FIG. 4, the slit plate 7 located at the diagonal position causes the slit 7 'to emit light emitted from the light emitting element 8. It always exists at a position that does not enter the element 9. When the stylus pen device 2 is located away from the digitizer device 1 or when the S pole pen tip 3 is not located on the digitizer device, the magnets located at the opposite corners of the digitizer device 1 as shown in FIG. The plate 6 has a direction indicating the northern part of the geomagnetism, or S
The magnet plate 6 rotates so that the center of the N pole faces the direction in which the pole tip 3 is located. At this time, the diagonally existing magnet plate 6 is at a position where at least one of the light receiving elements 9 cannot receive the light of the light emitting element 8. In this manner, with the configuration as shown in FIG. 1, it is possible to determine whether the S pole pen tip 3 is being used while the stylus pen device 2 is being used on the digitizer device 1 or not. It can be surely known whether or not both of the light receiving elements 9 are receiving light. Therefore, it is necessary to make the user surely recognize the two types of modes, for example, the writing mode and the erasing mode, which are easy to select by the user. By assigning, it is possible to reliably switch between the two input modes by a unified operation in which the user always switches up and down the stylus pen device under various modes that are hierarchically layered. In the embodiment, when the coordinate input unit 103 is a device completely independent of the CPU 100, a CPU (not shown) in the coordinate input unit is used.
Calculates the coordinate position, and when transmitting the result to the electronic device main body, also transmits the direction information of the currently designated pen. Of course, a case where the CPU 100 executes all the processes including the process of calculating the coordinate position and the like may be used at all. <Other Embodiments> In the above embodiment, the means for detecting the nib polarity of the stylus pen device 2 is determined based on the rotation direction of the rotating magnet plate. However, as shown in FIG. , And the detection device consisting of a cantilever 13 connecting both, it is strong against vibration and impact because it does not use a mechanical rotating system,
Further, it is possible to detect the nib magnetic pole at a higher speed. As described above, in a device for specifying a position using a coordinate input pen, both ends of the pen are made to function as a pen tip for inputting coordinates, and the direction of the pen is detected, whereby the conventional two-point pen is used. It is possible to have a double selection function. In the embodiment, the direction of the input pen is detected by magnetic pole detection, but may be detected by other methods.

【The invention's effect】

As described above, according to the present invention, it is possible to determine which of the two ends of the input pen is input, and furthermore, no special circuit or code is required for the determination, and an operation with excellent operability is performed. Be able to provide. Therefore, it is possible to switch the input mode as if the user operates a common pen.

[Brief description of the drawings]

1 (A) is a block diagram of an electronic device according to the present embodiment, FIG. 1 (B) is a block diagram of a coordinate input unit according to the embodiment, and FIGS. 2 to 5 are pen tip discrimination according to the embodiment. FIG. 6 is a sectional view of the configuration of a coordinate input unit in another embodiment, and FIGS. 7 and 8 are diagrams for explaining a conventional technique. In the drawing, 1... A digitizer of a resistive film type or the like, 2... A stylus pen device, 3.
6 ... magnet plate, 7 ... slit plate, 8 ... light emitting element, 9
…… light receiving element, 100 …… CPU, 101… ROM, 102 …… RAM,
103 ... Coordinate input unit, 104 ... VRAM, 105 ... Display unit.

Claims (2)

(57) [Claims] 1. A coordinate input device for detecting a designated position by designating a desired position on a coordinate input panel with an input pen, comprising: an input pen having a nib magnetized to S and N at both ends; A magnet plate provided on the input panel and rotatably held, and detecting means for detecting which pen tip of the input pen has issued a coordinate input instruction according to a direction after rotation of the magnet plate, A coordinate input device comprising: 2. An electronic apparatus having a coordinate input device for detecting a designated position by designating a desired position on a coordinate input panel with an input pen, wherein an input having a pen tip magnetized to S and N at both ends. A pen, a magnet plate provided on the coordinate input panel and held rotatably, and for detecting which pen tip of the input pen has given a coordinate input instruction, based on a direction after rotation of the magnet plate. An electronic device, comprising: a detection unit; and a switching unit that switches an input mode using the input pen according to a detection result of the detection unit.