JPS5856190A - Handwriting input equipment - Google Patents

Abstract

PURPOSE:To perform simultaneous input to plural different positions in an input surface by allowing plural resistance sheets to face mutually in matrix structure, and partitioning the input surface into plural independent areas. CONSTITUTION:Resistance sheets 6 and 7 form two-divided areas of an upper resistance sheet 1 in a direction Y, and the remaining two resistance sheets 8 and 9 form two-divided areas of a lower resistance sheet 2 in a direction X. Then, the 1st input surface A is formed on the opposed surfaces of the upper and lower resistance sheets 6 and 8 facing at right angles, and the 2nd input surface B is formed of the sheets 6 and 9; and the 3rd input surface C is formed of the sheets 7 and 8, and the 4th input surface D is formed of the sheets 7 and 9. Thus, the respective resistance sheets 6, 7, 8, and 9 are arranged while insulated from one another, so simultaneous input to the respective input surfaces A-D is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handwriting color input device K that uses a resistor sheet to determine input position coordinates from the ratio of current flowing through the resistor sheet and the division ratio of voltage. The aim is to realize simultaneous input of

Handwriting input devices are called data tablets, digital types, touch sensor panels, etc., and are widely used in combiator terminals, handwritten character/graphic communication terminals, and input/output terminals for game machines using microcomputers. ing. With this handwriting input device, when you lightly press your finger or pen on the input w, the suppressed input position will be changed to X-Y[
This input position coordinate detection method can be roughly divided into digital type and analog PD type. Among the digital type, which uses a conductive sheet and has a switch matrix structure, there is a type in which a large number of diode switches are arranged around the circumference of a resistor sheet to convert the input coordinates into digital quantities.
As the resolution increases, the structure becomes proportionally more complex.
The 0 analog type, which has limited uses due to its high price, is generally round using a resistor sheet, which requires a converter tube to interface with the computer.
The structure is relatively simple and inexpensive), and the resolution is high, so it is used in a wide range of fields. The nine analog handwriting input devices using this resistive sheet are of the capacitive coupling type in which the input image on the resistive sheet F is pressed with an electric pen, and the contact type in which the input surface is pressed with a finger writing instrument. ! In the contact method, the distance coordinates can be determined from the ratio of the current flowing through the resistance sheet and the voltage division ratio.

However, the above-mentioned analog handwriting input device has the disadvantage that if input is made at the same time at two different points on the input surface, deception at the intermediate point will be detected. This will be explained with reference to a conventional example of a voltage detection method l) contact type hand-held input device shown in FIG. Peng's Ill and (phantom) are two parallel, opposing, high-resistance sheets, each of which has a thin transparent insulating sheet on one side.
A thick layer of resistor film is applied, and parallel electrodes (1&X1b), (
g&Xjlkl) and is of good quality. Each resistance seat) Ill is t41g (1&X1m)), C
M&>CB13> are arranged facing each other in two orthogonal directions, the X direction and the Y direction. And each resistance sheet ) (1
j (27!'l) One I!m (1 &) Ca &) is connected to rIL Flow Kamishi (4) through a switching circuit (3), and the other electrode (1bXlb) is connected through another switching circuit. is grounded. Each switching circuit +
The sl tel is controlled by a combination ground and DC voltages of 6 volts & (1aX4b), (1s(lb)Kll)Il are applied alternately. Also, each resistance sea H1ll! The facing surfaces with the resistive films 1 and 1 face each other at a constant minute interval, and are used as one input surface.

Apply a DC voltage to the upper resistor sheet (t1), open the lower resistor sheet (t), and select any point on the input surface! Press with your finger and press each resistance sea H at point A.
When the phantom resistive film is brought into contact with the upper resistive sheet (1
) The voltage potential at point A in the Y direction is detected by the electrode (la'rc) on the lower resistive sheet (la'rc, and the Y coordinate of point Pf is determined. 11F.

, Apply DC voltage to the lower resistor sheet (1) while pressing point P to open the upper resistor sheet (1),
Point of lower resistance sheet (2)! The voltage potential in the X direction of is detected by the upper resistance (see) ill electrode (l), and the coordinates of point r are determined.

By the way, suppose that when pressing point p on the input surface ←), another point r' is pressed at the same time by mistake. Then, for example! When the seat is removed from the side, the lower resistance sheet (upper resistance sheet because there are 4 MKs between the two points r and r') is inserted between the two points and i, and the electrode (2a ) is detected!
The coordinates are the midpoint r゛ between the two points A and P'! It becomes the coordinates. Similarly, when detecting the X center point, the intermediate point p''Ir)x@ mark is detected.

Therefore, a large cursor (sliding platform) that can move freely in the X-Y direction above the input m (conventionally used for input Place it on the input surface S and use a long pen to perform input operations.
: You are performing input operations with your hands sufficiently far away from the screen. However, such measures are difficult to implement because the input operations are complicated, and the solution to the above-mentioned operation is still insufficient.
picture. 9. Input screen (1111) If you want to use it as an input device for a video game where several people compete by inputting two or more inputs at the same time, you will need to prepare several input devices. Cao was valued.

The present invention has been made in view of these problems and demands.
A plurality of resistor sheets are arranged to face each other in a matrix structure to provide an independent input surface and a handwriting input device with a plurality of nine areas. Hereinafter, the configuration of the present invention will be explained using the embodiment of swA.

The first one is a total of four resistance sheets 1 fft (II (
In 1), 90 is formed on the four input surfaces, and the large side is shown. That is, the eight resistance sheets tS+(t) in the ls diagram are
The upper resistance sheet (1) in the figure is divided into two in the Y direction, and the remaining two resistance sheets (111) are divided into two in the X direction than the lower resistance sheet (t) in Figure 1. Then, the first input image) is formed on the opposing surfaces of the upper and lower resistance sheets (6) facing perpendicularly (horizontal).
In the same way, change the resistance sheet (-1 to the input surface of the corridor), the resistance sheet) m (81 to the third input 111m (C), and the resistance sheet H7) lit) to the fourth input surface. It is formed. Each resistor seat) m T71 (81 (ml Fi is placed insulated from each other, each resistor seat) tall Il)
(The application of DC voltage to Ill1 is performed in a time-sharing manner by Gonbuter control, and this allows each human power to be applied to W1.&
) (To) (C') (Simultaneous input to IJ becomes possible.

For example, when an arbitrary point Pi (#n) is pressed on the input surface, the input coordinates of this point Pz are detected when the voltage shown in FIGS. 3 and 4 is applied. t), three resistive sheets (-8
), the electrodes (abx) (a
bs) Apply DC voltage only to K, and apply DC voltage to each other resistance (see)
171181 ill is in the open state, the voltage potential in one direction at the point IPXK of the upper resistor sheet (1ft) is detected by the electrode (1ft) of the lower resistor sheet (8), as shown in Figure 4. resistance sea) (
Electrons at both ends of 11 (aex) (aes) K only Ii
[When a current voltage is applied to bring the other resistance sheets (mlYl) into a flat state, the voltage potential in the X direction at point P1 of one set of lower resistance sheets becomes
It is detected by the electrode (a-b). Even in the same MX theory, the 1st and 8th
The input position coordinates at (on the input screen) are the upper and lower 8 resistance sheets)
Ill Each electrode of Ill (ak+z) (al+mχ□
ax) (baa) Detected when time-division DC voltage is applied, the input position coordinates on the 8th input surface (C) are resistance sea)
171) Each electrode ("1) (Cmu), (&1!IX
The input position coordinates are detected when applying a time-division DC voltage to the ILO, and the input position coordinates on the fourth input surface are the resistance sheet) i71
191 each electrode (cdλ) (Cd-), (1)d-)
Time division to (bdm) [& mouth detected when voltage is applied Here, for example, one point Pi on the first input surface) and one point P3 on the third input surface are simultaneously suppressed to explain 9 o'clock. . At this time, the X coordinate of point P1 (Fig. 3) can be detected since the upper three resistor sheets 17) are insulated and independent.
It can be performed regardless of the input of
(Figure) can also be performed independently of the input at point Pa by insulating the resistor sheets (6) and (7). The same can be said for detecting the input accuracy at point Pg. Even if simultaneous input is made to two points Pi and PI, each input coordinate is time-divided and accurately detected almost simultaneously. This is the same for any eight simultaneous inputs of )P)(C)(to) on each input screen), for any eight simultaneous inputs of The same is true.

However, if two points are input at the same time for one of the input m G&) < B) (C) Departure 11
1-Each input surface (magnitude) (C) in IK is a large-angle structure obtained by dividing the input surface (B) in Fig. 1, and the area of each one is small. When inputting one point, the craftsman's point of effort when inputting different points at the same time is often far enough away from the desired input point, so each input surface) (Be (C) (→) The number of malfunctions that occur is significantly reduced.

Same, the present invention company does not add la to the above example,
Various modifications are possible, such as changing the widths of the plurality of resistance sheets to use the areas of the plurality of input surfaces in various sizes depending on the purpose. Additionally, in the drawings, each resistor sheet is explained as being independent of each other, but it appears that each resistor sheet is coated on a single insulating sheet and divided into multiple resistive films and electrodes in the X direction or in one direction. It is also possible to have eight resistance sheets facing each other.

Furthermore, the present invention can be fully applied to a contact type or capacitive type handwritten color input device that detects input position coordinates using a current flowing through a resistive sheet. In this case, each input surface is independently divided into a plurality of areas, and input can be made to multiple input surfaces at the same time, allowing multiple people to use the input surface at the same time, thereby providing a versatile commercial handwriting input device. Dancing at In addition, by dividing the input screen, the probability of malfunctions caused by simultaneous two-point input on the same manual screen is reduced, and input operations become easier.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a main part showing an example of a conventional handwriting input device, FIG. S is a schematic plan view of a main part showing an embodiment of the present invention, and FIGS. FIG. 3 is a rounded plan view illustrating an example of the input position coordinate detection operation of the handwriting input device. (@) +? 1 ill till...Resistance sheet, (A) (B) (C9(4-...Input surface, (abl
)(abg), (adz)(cm), <-C-)
C-a, (ba,') (ba, 1 pole.

Claims (1)

[Claims] (1), three resistance sheets with a pair of electrodes parallel to both ll1i, each electrode in one direction! Hands are arranged facing each other in two orthogonal directions, and the pressed large input position on the input surface is determined by the I-Y coordinate signal of the voltage or electric R value of the electrode of each resistor sheet** Input # At f, one resistor sheet with the X-direction electrode! The other resistor sheet is divided into multiple parts in the direction and has X-direction electrodes! Divide into multiple directions,
A manual input device that allows the input surface to be divided into multiple independent areas.