JPS6139123A - Input device - Google Patents

Abstract

PURPOSE:To discriminate accurately of the continuation of data composed of handwriting information and perform excellent reproduction by putting an independent electrode inside an X-axial electrode and an independent electrode inside a Y-axial electrode in a contacting/noncontacting state according to the pressing/releasing operation of the input device. CONSTITUTION:An X-axial electrode array 1 is printed on one surface of a film 6 with conductive paste and independent electrodes 2 are provided inside the array 1; and the electrodes 2 are short-circuited mutually and electrically at the surface of the film 6 opposite the printed surface of the array 1 and applied with a constant potential through a resistor 8. Further, a Y axial electrode array 3 is printed on one surface of a film 6' opposite the array 1 with conductive paste, and independent electrodes 4 are provided inside the array, short-circuited electrically on the surface of the film 6' opposite to the printed surface of the array 3, and grounded. Then, the array 1 is scanned successively with a scanning signal and a scanning signal for confirming a coordinate position corresponding to the depression position of the input device is detected from the array 3 to confirm the coordinate position.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a handwritten information input device such as an electronic whiteboard or a tablet used in a remote conference system.

(Configuration of conventional example and its problems) When recognizing handwritten information, it is necessary to identify each stroke if it is a character, or to identify each line segment if it is a graphic. It must be determined whether the point is a continuation of the previously entered point or the start of a new continuous line. For this purpose, information as to whether the input means is effectively pressed down on the board surface or is away from the board surface is required together with handwritten information, ie, coordinate information.

Conventionally, in electromagnetic induction type input devices, a dedicated input means has a built-in microswitch, and when the input means is pressed against a board surface, the microswitch is turned on and the input means is pressed against the board surface. When the input means is moved away from the board surface, the eye cross is turned off and used as an input release signal for the input means. Since it is necessary to send a push/release signal using this method, there is a problem in that the operability without impairing the naturalness of handwriting is also deteriorated.

On the other hand, with electrode contact type input devices, there is no need to use a dedicated input means as long as there is pen pressure, and therefore the input means can be independent from the input device itself, so there are no disadvantages of the electromagnetic induction type input devices mentioned above. The problem of poor operability disappears. However, the determination of whether the input means is pressed or released is based on a time set to be longer than the pulse width of the scanning signal of the electrode moving body array, and shorter than the time when the input means leaves the input device board surface between strokes. Since this is done by the input means press/release detection unit, there remains uncertainty in the upper limit time, and if the input means is pressed again on the board surface within the upper limit time, the data is considered to be continuous with the previously input data. However, when handwritten input information is reproduced on a CRT or the like, it has the disadvantage that it differs from the original information.

(Object of the invention) The present invention eliminates such conventional drawbacks,
To accurately identify data continuity in handwritten input information by generating accurate press/release signals of an input means to an input device board surface without impairing the naturalness of handwriting or deteriorating operability; An object of the present invention is to provide an input device whose purpose is to eliminate errors during playback.

(Structure of the Invention) The present invention provides a plurality of electrode conductor rows as X-axis electrodes on one surface, and provides independent electrodes inside each of the X-axis electrodes, and connects these independent electrodes with through holes. A first film electrically guided to the opposite surface and short-circuited to each other on this surface, and a plurality of electrode conductor rows as Y-axis electrodes in a direction perpendicular to the X-axis direction on one surface. A second electrode is provided, and an independent electrode is provided inside each of these Y-axis electrodes, and these independent electrodes are electrically guided to the opposite surface by a through hole, and second electrodes are short-circuited to each other on this surface.
and a spacer separating the X-axis electrode of the first film and the Y-axis electrode of the second film, the first and a second film was arranged such that the independent electrode inside the X-axis electrode and the independent electrode inside the Y-axis electrode came into contact/non-contact in response to the pressing/release operation by the input means. It is characterized by By applying a constant potential ' through the resistor to the surface opposite to the X-axis electrode array of the first film, and grounding the surface where the patterns from each through hole of the second film are mutually shorted, A pressing/release operation of the means can be detected. That is, when any electrode is pressed by the input means, the scanning signal of one electrode conductor row is detected from the other electrode conductor row according to the position, and at the same time, the scanning signal is detected independently from the X and Y axis electrode row electrodes. The electrodes are also electrically connected to each other, and an input means press signal is obtained from the independent electrode on the X-axis electrode array side.

(Explanation of Examples) Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, an X-axis electrode array 1 is printed with conductive paste on one side (B side) of one film 6, and an independent electrode 2 is provided inside the X-axis electrode array 1. These independent electrodes 2 are electrically short-circuited to each other by a through hole 5 on the surface (A side) of the film 6 opposite to the printed surface of the X-axis electrode array 1, and a constant potential is applied through the resistor 8. Further, as shown in FIGS. 1, 4, and 5, a Y-axis electrode array 3 is printed with conductive paste on one side (zero side) of the film 6' facing the X-axis electrode array 1, and Independent electrodes 4 are provided inside this Y-axis electrode array, and these independent electrodes 4 are electrically connected to each other by through holes 5 on the surface (D surface) opposite to the printed surface of the Y-axis electrode array 3 of the film 6'. short circuit to G
Drop it into ND.

By configuring the input section of the input device as described above, the X-axis electrode array can be sequentially scanned with a scanning signal, and the Y-axis electrode array can receive a scanning signal for recognizing the coordinate position according to the pressed position of the input means. Not only can the coordinate position be recognized by detection, but also the independent electrodes 2.4 come into contact, the potential of the independent electrodes 2 becomes GND, and a signal indicating that the input means is pressed is obtained. When the input means leaves the plate surface, the independent electrodes 2 and 4 are brought out of contact, the potential of the independent electrode 2 becomes constant again, and a signal for releasing the input means is obtained.

As described above, since a press/release signal is obtained in response to the operation of the input means, information is added to identify whether the coordinate data is the first data pressed by the input means or data in the middle. This makes it possible to express each line segment without error when reproducing handwritten input information.

The input means press/release signal obtained in this way corresponds in real time to the operation timing of the input means, unlike conventional signals obtained indirectly by scanning the electrode conductor array, so the input means press/release signal corresponds to the operation timing of the input means in real time. It becomes possible to accurately identify continuity and eliminate errors during playback.

(Effects of the Invention) As described above, the present invention relates to an input device that generates a signal that accurately corresponds to the pressing/release operation of the input device on the input device board surface, and improves the continuity of data in handwritten input information. This is extremely advantageous in practice, since accurate identification eliminates the inconvenience of letters, figures, and other shapes continuing or separating at non-regular positions during reproduction.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention. Figure 2.3.4.5 shows A, B in Figure 1, respectively.
It is a figure showing C and D sides. 1... X-axis electrode array of conductive paste printed on the film, 2... Independent electrode provided in the X-axis electrode, 3...
Y-axis electrode array of conductive paste printed on film, 4
... Independent electrode provided in the Y-axis electrode, 5... Through hole, 6, 6'... Film, 7... Spacer.

Claims (1)

[Claims] A plurality of electrode conductor rows are provided as X-axis electrodes on one surface,
And an independent electrode is provided inside each of these X-axis electrodes, and these independent electrodes are electrically guided to the opposite side by a through hole, and a first film short-circuited to each other on this side and a first film on one side are provided. , a plurality of electrode conductor rows are provided as Y-axis electrodes in a direction perpendicular to the direction of the X-axis, and independent electrodes are provided inside each of these Y-axis electrodes, and these independent electrodes are connected to the opposite side by a through hole. electrically guided to the surface of
A second film is short-circuited to each other in this plane, and a spacer is provided to separate an X-axis electrode of the first film and a Y-axis electrode of the second film, and the X-axis electrode and the Y-axis electrode are separated by the spacer. The first and second films are arranged so as to face each other, and the independent electrode inside the X-axis electrode and the independent electrode inside the Y-axis electrode come into contact with each other in response to a pressing/release operation by an input means. An input device characterized by being non-contact.