JPH09114578A - Digitizer inspection device - Google Patents

Abstract

(57) [Summary] [Problem] Workers perform a relatively large amount of work such as response to a computer and other work such as ON / OFF of a jig power supply and switching of a switch as compared with the process of product inspection itself There is. A tablet substrate in which a plurality of electrode lines are arranged in the X and Y axis directions, a pen for capacitively coupling with each electrode line of the tablet substrate, a digitizer made of the tablet substrate, a dielectric material, and the like, The jig plate is placed on the surface of the digitizer, and the jig plate has a switch region whose function is designated by capacitive coupling between the electrode wire of the tablet substrate and the tip of the pen. Digitizer inspection device that has.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product assembly and a product inspection using a digitizer, and more particularly to a device for accurately and efficiently inspecting a digitizer.

[0002]

2. Description of the Related Art Conventionally, coordinate data sent from a digitizer is plotted on a display of a computer, and an operator inspects by checking the display whether or not there is a portion where an electrode wire break cannot be input. The digitizer of the input device that has been conventionally used had to use a computer display in the inspection in order to confirm that input was possible in all input areas.
A computer is used to assemble and inspect products using a digitizer, and various inspections and data correction processes are optimized to record the inspection data on a floppy disk or the like. At this time, the operator always had to operate various switches in accordance with instructions from the computer.

In this inspection, it takes time for the inspection because it is left to the operator to judge the result. Also, this test seems to be able to finish the work quickly by moving the pen quickly, but the coordinate values sent from the digitizer could not follow the movement of the pen and were plotted on the display. However, there is a problem in that it is not possible to judge whether the electrode wire is broken or the plot interval is open, which is rather slow. In other words, the worker had to move the pen slowly while looking at the display.

[0004]

For each inspection item of the digitizer, the program of the computer cannot move to the next processing unless the program of the computer or the test result is transmitted to the computer by some information. In order to shift this processing, keyboard input and mouse input were required as at least one operation for each inspection item. In other words, the work of the worker to respond to the computer and other work such as ON / OFF of the jig power supply and switching of the switch is relatively larger than the processing of the product inspection itself.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and includes a tablet substrate having a plurality of electrode lines arranged in the X and Y axis directions, and each of the tablet substrates. It consists of a pen that capacitively couples with the electrode wire, the tablet substrate, a digitizer made of a dielectric material, etc., and a jig plate placed on the surface of the digitizer. The present invention proposes a digitizer inspection device having a switch region whose function is designated by capacitive coupling between an electrode wire of a substrate and a tip of a pen.

[0006]

The present inventor has carried out a method of automatically recognizing all the inspection contents of the digitizer and omitting an operation such as extra key input. However, in the accuracy inspection requiring accurate information (precision) (positioning the pen) The worker was required to concentrate on the work, resulting in a work burden, and conversely, the workability was deteriorated. Therefore, the inspection program examined the state of the digitizer and made it automatic recognition type processing as much as possible, and for the work requiring accuracy (precision), we examined the method of giving an external trigger as in the conventional method. Specifically, the pen and tablet pairs are adjusted during assembly, adjustment, and inspection of the digitizer, and the switch status of the pen is transmitted to the host side via the circuit board on the tablet, so the pen and jig plates can be used. If each state of the plurality of switches provided is provided with a function such as inspection start and is transmitted to a program which is a host, the operator can both respond to the inspection start and the switch inspection.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a pen is used to specify an inspection item and various other commands are executed in response to signals from a pen and a digitizer that are coupled by a capacitance coupling method.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of an embodiment of the present invention. The digitizer 1 is mainly composed of a pen 2 which is a coordinate indicator shown in FIG. 2, a tablet substrate 3 which is an input surface, and a control substrate, and is incorporated in the housing 4 or a product. The coordinate value from the reference position of the tablet designated by the pen 2 is converted according to the set correction value, and the 5 information of the pen switch is combined as the coordinate of the product and the host 6
Sending to the side. The pen 2 of the embodiment and the substrate 7 of the tablet will be described as operating by capacitive coupling. As the electrostatic capacity coupling type tablets, Japanese Patent Publication No. 52-4404 and Japanese Patent Publication No. 4404 are known.

The main contents of the inspection of the digitizer 1 are a disconnection inspection and an accuracy confirmation which are both an operation confirmation inspection of the pen switch 5 of the input pen 2 and an inspection whether all input areas of the digitizer 1 can be input. Perform accuracy inspection. Further, an operation for calculating an optimum correction value is performed between the disconnection inspection and the accuracy inspection. Since the digitizer 1 detects the position in the X direction and the Y direction on the tablet substrate 7, the electrode lines 8 having a width of about 1 mm are arranged in a matrix in the direction perpendicular to the detection direction, and between the electrode line 8 and the pen 2. A pulse signal applied by the combined capacitance is converted into a voltage by a main board (not shown) and processed as position information of the pen 2. To detect the disconnection of the matrix-shaped electrode wire 8 and to inspect the switch at the tip of the pen, the rectangle in the vicinity of the maximum input area of the digitizer 1 is circled and input to perform disconnection inspection.

Here, if the electrode wire 8 of the tablet substrate 7 is broken, it is impossible to generate the coordinates in the vicinity of this break. Obtained and set in the program in advance, and if there is a coordinate interval longer than that, the computer 9
The screen 10 is marked with a red mark and the buzzer is sounded to warn the operator that there is a possibility of disconnection. By doing so, the operator can see the screen 1 of the computer 9.
It is sufficient to move to 0 at a pen speed such that the red mark or buzzer does not sound, and it is not necessary to inspect while looking at the screen 10 of the computer 9. Even if a red mark is displayed or a buzzer sounds, the screen 10 of the computer 9
It is only necessary to re-enter only that portion after seeing, and the inspection can be completed in a short time without the operator making a pass / fail judgment.

Further, a jig plate 12 made of acrylic or glass epoxy plate is used to protect the input surface 11 of the digitizer 1 from scratches by the pen 2. This jig plate 1
2 is used according to the position where the housing 4 can be fixed such as abutting. A rectangular groove or a guide 13 is provided near the maximum input area on the surface of the jig plate 12 so that the pen 2 can be moved smoothly. The jig plate 12 is provided with 4 to 9 recesses 15 so that the position of the pen tip 14 can be fixed, and is used for correction value calculation input and accuracy inspection.

The correction value calculation means that the origin of the tablet and the X / Y axis do not match the display depending on the position where the digitizer 1 is actually mounted on the housing 4 as a product. This is the work of determining the parameters to be performed. The parameters are set in a bit switch or EEPROM (not shown) of the main board of the digitizer. The digitizer 1 uses a bit switch or EEPR for the coordinates generated on the tablet board 7.
The coordinate conversion is performed according to the value of OM, and the coordinate when the product is incorporated is transmitted to the main body 6 or the computer 9 which is the host.

In order to calculate the correction value, it is necessary to accurately grasp the axis and the origin when the digitizer 1 is attached to the housing 4 and the axis and the origin of the tablet board 7. It is necessary to apply the jig plate 12 thus prepared and to accurately obtain the deviation amount. If the pen tip 14 cannot be fixed at a fixed position when inputting coordinate values, an accurate amount of deviation cannot be obtained. Therefore, the jig plate 12 is provided with recesses 15, 15, 15, ... ing. The position of the recess 15 of the jig plate 12 is measured in advance, and the error between the position and the position difference mark generated from the tablet is used as a parameter for correction.

Therefore, in addition to the operation inspection of the pen switch, which is a later inspection item, the change of the side switch 5 is used as a trigger to capture the data. This also eliminates the need for a separate pen switch test later.
Since the operation of the pen 2 of the digitizer 1 is originally designed as an input device of the computer 9, its operability is more direct than inputting with a keyboard, and if the interface is established, the operability is better than other input devices. It is excellent, reduces the pen switch inspection and keyboard handling, and eliminates the need for the operator to concentrate.

The inspection operation when there is one side switch 5 will be concretely described. The inspection program is designed so that once the program is started up, the peripheral devices of the computer are not used until the end. Also, the power switch is O
Only N / OFF is operated. As a preparatory work, the program is started and initial settings such as input of the digitizer product lot number are performed. Turn on the power after connecting with the jig. Perform tablet disconnection inspection. In the program, a part of the signal line connected to the jig is monitored, it is discriminated whether the digitizer is powered on, and the disconnection inspection is performed. On the screen 10 of the computer 9, points corresponding to the transmitted coordinate values are plotted as white dots. Pen 2
When is moved, its locus is displayed in white on the screen 10 of the computer 9. The operator makes a circle around the input pen 2 along the guide 13 of the jig plate 12 at an arbitrary speed. When the disconnection warning buzzer sounds, the pen 2 may be used to confirm the presence or absence of disconnection only in the area of the digitizer corresponding to the portion marked in red on the screen 10 of the computer 9.

Further, an area for displaying the intention of the operator is displayed in advance on the jig plate 12, and the disconnection inspection end area 1
6 or double-click in the re-input execution area 17, the program determines the intention of the operator and executes it. For example, to terminate the disconnection inspection, double-click the input pen 2 in the disconnection inspection end area 16. If the digitizer 1 is defective and does not operate at all, it is necessary to be able to escape from the keyboard. In addition, the jig plate 12 has a correction input end 18, an accuracy inspection end 19,
There is a designated area for ending the fraud 20, YES21, and NO22, and the tip portion 14 of the input pen 2 is brought into contact with the contact portion. As described above, appropriate means such as double-clicking or touching can be applied. deep.

The input pen 2 is brought into contact with a position (indentation 15) to be inspected as an input method at the time of calculation of a correction value and accuracy inspection, and the side switch 5 is turned on. ON of this side switch 5
The subsequent several coordinate values are adopted as data for correction calculation and accuracy inspection. In this way, wasteful handling work can be reduced and the work can be done intuitively and easily, and the program recognizes the worker's intention, so that the worker can actively inspect the digitizer. The working time could be reduced to 2/3.

[0018]

According to the present invention, the inspection and workability of the tablet and pen are improved, and the work efficiency is improved, so that the time is shortened and the cost is reduced.

[Brief description of the drawings]

[Figure 1] Overall configuration diagram

[Fig. 2] Appearance diagram of jig plate and input pen

[Figure 3] Digitizer configuration diagram

[Fig. 4] Jig plate

[Explanation of symbols] 1 digitizer 2 input pen 3 tablet 4 housing 5 side switch 6 host 7 tablet substrate 8 electrode wire 9 computer 10 screen 11 input surface 12 jig plate 13 guide 14 pen tip 15 dent 16 disconnection Inspection end area 17 Re-input area 18 Correction input end area 19 Accuracy inspection end area 20 Inspection end area 21 YES area 22 NO area

Claims (2)

[Claims] 1. A tablet substrate having a plurality of electrode lines arranged in the X and Y axis directions, a pen capacitively coupled to each electrode line of the tablet substrate, and a digitizer made of the tablet substrate, a dielectric material, and the like. , A switch area, which comprises a jig plate placed on the surface of the digitizer, the jig plate having a function designated by capacitive coupling between the electrode wire of the tablet substrate and the tip of the pen. A digitizer inspection device having: 2. The digitizer inspection apparatus according to claim 1, wherein the jig plate has areas for designating disconnection inspection end, re-input area, correction input end, accuracy inspection end, and inspection end. .