JP2006029987A - Capacitance type detection device and method, and coordinate detecting program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a capacitance type detection device capable of raising detection accuracy, and usable as an operation key in an arbitrary shape. <P>SOLUTION: The accuracy of coordinate detection can be raised, since regions being in a sensing region A and in predetermined ranges adjoining drawing-around regions Bx, By are set as dead zone regions Ex, Ey, the region other than the dead regions Ex, Ey is set as an active region F, and the detection of the coordinate position of a substance to be detected is performed using only data signals detected from the active region F. Moreover, the device can be used as a cross key, by setting the active region to the shape of a cross for example. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a capacitance type detection device used for a touch panel or a glide point, and more particularly to a capacitance type detection device and method which can be used as an operation key having an arbitrary shape while improving detection accuracy. And a coordinate detection program.

  As a prior art related to the capacitance type detection device according to the present invention, for example, there is a pad type pointing device as shown in Patent Document 1 below.

  In Patent Document 1, an X electrode layer 20X comprising a plurality of X electrodes x1, x2,..., X15, x16 extending in the X direction and arranged at predetermined intervals in the Y direction is provided on the lower surface of the film substrate 10, An insulating film 12 is formed on the surface (lower surface) of the X electrode layer 20X, and a plurality of Y electrodes y1, extending in the Y direction on the surface (lower surface) of the insulating film 12 and arranged at predetermined intervals in the X direction. A Y electrode layer 20Y made of y2,..., y15, y16 is formed. That is, the X electrode layer 20X and the Y electrode layer 20Y are provided on the lower surface of the film substrate 10 so as to face each other in a matrix form orthogonal to each other with the insulating film 12 interposed therebetween.

The Y electrodes y1, y2,..., Y15, y16 and the X electrodes x1, x2,..., X15, x16 are drawn out through through holes, contacts, electrodes and the like provided at the edge of the insulating film 12. Finally, they are collected at the end portion Ds of the extension portion 11 of the film substrate 10 and connected to the conductive portion 5 of the control substrate circuit 4 therefrom.
JP 2003-99185 A

  The capacitance type detection device is configured such that when a detected object such as a finger is brought close to the X electrode layer and the Y electrode layer, the detected object and each X electrode, and the detected object and each By detecting a change in capacitance formed between the Y electrode and the Y electrode, the position of the detected object in the X and Y directions is detected.

  Therefore, in order to increase the detection accuracy in the X and Y directions, when the detected object approaches the electrodes other than the X and Y electrodes, no capacitance is formed between the electrodes and the detected object. Or, even if the capacitance is formed, the amount of change needs to be small.

  However, in the above-described conventional capacitance type detection device, the drawer is extended from the ends of the Y electrodes y1, y2,..., Y15, y16 and the X electrodes x1, x2,. Since the wire is arranged adjacent to the Y electrode or the X electrode, a capacitance is easily formed between the lead wire and the detection object, and the amount of change cannot be reduced. Therefore, there is a problem that it is difficult to improve the accuracy of position detection of the detection target in the X and Y directions.

  In addition, if the flat pad type pointing device as described above is used instead of, for example, a cross key for a game, the change in capacitance in a direction other than the cross direction is also acquired. There is a problem that the operation in the cross direction cannot be performed as intended.

  The present invention is for solving the above-described conventional problems, and prevents the influence from the extension line even when the extension line such as the extension line is arranged close to the sensing area and detects the coordinates. It is an object of the present invention to provide a capacitance type detection device with improved accuracy.

  It is another object of the present invention to provide a capacitance type detection device and method, and a coordinate detection program that can use a part of a sensing area as an operation key having an arbitrary shape according to an operation mode. Yes.

The present invention is a capacitance type detection device that detects a coordinate position using a programmed computer,
A sensing area in which the detection object comes into contact or approaches, and a plurality of sensors that form a capacitance in the sensing area as coordinates and output the position of the detection object as a data signal indicating the change in capacitance An extension line for connecting between the electrodes, the individual sensor electrodes and an external circuit provided outside the sensing area, and an extension line provided in the vicinity of the sensing area and arranged closely Turning area,
Of the sensing area, when the area within a predetermined range adjacent to the routing area is a dead band area, and the area other than the dead band area is an operation area,
Detecting means for acquiring data signals at all coordinates in the sensing region;
Discriminating means for discriminating whether the detected data signal is output from the dead zone area or the operation area;
Coordinate specifying means for specifying the coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation area. It is.

  In the first aspect of the invention, the sensing area is separated into the dead zone area adjacent to the routing area and the other operating area by software, and the data signal detected from the dead zone area is ignored, and only from the operating area. Since only the detected data signal is used as basic data for coordinate input, it is possible to realize highly accurate coordinate detection with less influence from the routing area.

Further, the present invention is a capacitance type detection device that detects a coordinate position using a programmed computer,
A sensing area in which the detection object comes into contact or approaches, and a plurality of sensors that form a capacitance in the sensing area as coordinates and output the position of the detection object as a data signal indicating the change in capacitance Electrodes,
When a boundary line having a predetermined shape is virtually formed in the sensing area, one of the inside and outside of the boundary line is a dead band area, and the other is an operation area, the data signal is the dead band area and the A discriminating means for discriminating from which region the motion region is output;
Coordinate specifying means for specifying the coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation area. Is.

  According to the second aspect of the invention, since it can be used as various operation keys such as a cross key in accordance with the operation mode, a capacitance type detection device having excellent operability and mobility is provided. it can.

  In the above, it is preferable that an area setting unit for dividing the sensing area into the dead zone area and the operation area is provided.

  That is, the area setting means can be configured by software. In this case, the area setting means is stored together with other means (discriminating means and coordinate specifying means) in the storage means (RAM etc.) of the capacitance type detection device. It may be stored, or when the capacitance type detection device is attached to a higher level main device (for example, a control device such as a PC), the capacitance type detection device is connected to the main device. Alternatively, the configuration may be such that only the region setting means is incorporated in the driver software that performs the bridge.

  Preferably, a plurality of patterns are prepared as the predetermined shape, and one pattern can be selected from the plurality of patterns.

With the above means, various shaped operation keys can be realized.
For example, the sensor electrode includes a plurality of X electrodes extending in the X direction and arranged at predetermined intervals in the Y direction, and a plurality of Y electrodes extending in the Y direction and arranged at predetermined intervals in the X direction. It can be configured as opposed to each other in a matrix while orthogonal to each other.

The present invention is also a method for detecting the coordinate position of a capacitance type detection device by a programmed computer,
When a detected object comes into contact with or approaches a sensing area provided in the capacitance type detection device, an electrostatic capacity is formed as a coordinate in the sensing area, and the position of the detected object is set to the electrostatic area. Detecting as a data signal indicating a change in capacity;
Dividing the sensing area into a dead zone area and an operating area;
Determining whether the detected data signal is output from either the dead zone region or the motion region;
And a step of identifying a coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation area.

Furthermore, the present invention is a program for coordinate detection used in a capacitance type detection device,
When the detected object comes into contact with or approaches a sensing area provided in the capacitance type detection device, the computer forms a capacitance in the sensing area as a coordinate and determines the position of the detected object. Detecting means for detecting the change in capacitance as a data signal;
When the predetermined area in the sensing area is set as a dead band area and the other area is set as an operation area, the detected data signal is output from either the dead band area or the operation area. Discrimination means for discriminating whether it is a thing
When it is determined that the data signal is output from the operation region, the data signal is used to function as a coordinate specifying unit that specifies the coordinate position of the detected object.

  In the above, it is preferable to have a region setting means for dividing the sensing region into the dead zone region and the operation region.

  In the capacitance type detection device of the present invention, a dead zone is set in a part of the sensing zone adjacent to the routing zone, and a data signal detected from the dead zone is used as basic data for coordinate input. As a result, the influence from the routing area is reduced and the accuracy of coordinate detection can be increased.

  In the present invention, a part of the sensing area can be used as an arbitrary operation key according to the operation mode, for example, using a flat pad type pointing device as a cross key. It is possible to provide a capacitance type detection device excellent in the above.

  FIG. 1 is a schematic configuration diagram showing a capacitance type detection device showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is an operation surface of a cover sheet. FIG. 4 is a schematic configuration diagram similar to FIG. 1 showing an enlarged sensing area and FIG. 4 is a flowchart showing the operation of the capacitance type detection device.

  As shown in FIG. 1, this capacitance type detection device 10 includes a plurality of X electrodes (sensor electrodes) x1, x2,..., Xn extending in the Y direction and arranged at predetermined intervals in the X direction. .., Yn that extend in the X direction and are arranged at a predetermined interval in the Y direction.

  As shown in FIG. 2, the plurality of X electrodes x1, x2,..., Xn are provided on one surface (rear surface) of the dielectric sheet 11, and the plurality of Y electrodes y1, y2,. , Yn are provided on the other surface (surface) of the dielectric sheet 11. That is, the plurality of X electrodes x1, x2, ..., xn and the plurality of Y electrodes y1, y2, ..., yn are opposed to each other in a matrix form orthogonal to each other via the dielectric sheet 11. Yes. Therefore, a capacitance C can be formed between the X electrodes x1, x2,..., Xn and the plurality of Y electrodes y1, y2,.

  An insulating film 13 covering the plurality of X electrodes x1, x2,..., Xn is formed on one surface of the dielectric sheet 11, and similarly below the other surface of the dielectric sheet 11. An insulating film 12 is formed to cover the plurality of Y electrodes y1, y2,. A cover sheet 15 is fixed to the upper layer of the insulating film 12, and a substrate 14 is fixed to the lower layer of the insulating film 13. The fixing between the insulating film 12 and the cover sheet 15 and the fixing between the insulating film 13 and the substrate 14 are performed using an adhesive or the like, but the insulating films 12 and 13 themselves may be an adhesive. Good.

  The cover sheet 15 is formed of, for example, a polyester resin, and the surface (the surface on the Z1 side) is an operation surface 15a on which a detection object such as a finger contacts and slides. The plurality of Y electrodes y1, y2, ..., yn and the plurality of X electrodes x1, x2, ..., xn are arranged in a matrix at positions on the lower surface side of the operation surface 15a. As shown in FIG. 1 and FIG. 2, the portion facing the cover sheet 15 is surrounded by four electrode lines positioned at both ends in the XY plane, that is, the X electrode x1, the electrode Xn, the Y electrode y1, and the Y electrode yn. The area to be detected is the sensing area A of the capacitance type detection device 10.

  As shown in FIG. 1, the ends of the plurality of X electrodes x1, x2,..., Xn have extension lines Xa that are drawn from the sensing area A to the outside on the Y2 side in the drawing. Each extension line Xa is densely wired in the routing area Bx adjacent to the sensing area A, and is connected to the switching means 21X configured by a multiplexer or the like via the routing area Bx. Similarly, the ends of the plurality of Y electrodes y1, y2,..., Yn are densely wired in the routing area By provided adjacent to the outside of the sensing area A as the extension line Ya. The switching means 21Y provided outside is connected via the routing area By.

  The one switching means 21Y is connected to an oscillating means 23 so that a predetermined voltage can be selectively applied from the oscillating means 23 to the Y electrodes y1, y2,. It has become. The other switching means 21X is connected to an amplifying means 24, and the output of the amplifying means 24 is provided outside the capacitance type detecting device 10 via the A / D converting means 25. (A control device such as a PC).

  The electrostatic capacitance type detection device 10 has a storage means 26 composed of a RAM or the like, and in this storage means 26, driver software for bridging between the detection device 10 and the computer 30 is stored. Yes. The driver software includes various program modules such as a region setting process, a discrimination process, and a position specifying process in addition to a detection process for driving the detection device 10 and acquiring a data signal as will be described later.

  Note that all of the driver software may be installed in the memory unit 30B of the computer 30, or, as will be described later, only the area setting process may be installed in the memory unit 30B. Good.

  The computer 30 includes a central control unit 30A mainly composed of a CPU, a memory unit 30B, and the like, and the central control unit 30A outputs data output from the A / D conversion means 25 of the capacitance type detection device 10. In addition to acquiring signals, for example, it is possible to set the switching timing of the switching means 21X and 21Y. The oscillating means 23 is preferably driven based on a clock signal output from the computer 30 side. In addition to the OS (operating system), the memory unit 30B includes various application software and various program modules that operate the central control unit 30A in accordance with a predetermined processing procedure (algorithm) (region setting processing, detection processing). Discriminating process, position specifying process, etc.) are stored.

  The amplification means 24 has a function of amplifying the voltage appearing at the switching means 21X with a predetermined gain, and the A / D conversion means 25 converts the amplified voltage (analog value) into a digital value at a predetermined sampling period. It has a function. In addition, a configuration in which filter means for removing unnecessary noise is provided between the amplifying means 24 and the A / D converting means 25 may be adopted.

The operation of the capacitance type detection device 10 will be described.
The detection of the coordinate position in the capacitance type detection device 10 is performed by a detection process in which the central control unit 30A follows an algorithm described in a program stored in the memory unit 30B. That is, the central control unit 30A operates the switching means 21Y and the switching means 21X, first turns on the switch SW1 of the switching means 21Y, and sequentially turns on the switches on the switching means 21X from SW1 to SWn in this state. .

  When a pulse signal having a predetermined voltage is input from the oscillating means 23 to the Y electrode y1, at a frequency that matches the switching timing of the switches SW1 to SWn on the switching means 21X side, each Y electrode is opposed to the Y1. Thus, a dielectric flux is sequentially generated between the X electrodes x1, x2,..., Xn arranged in a matrix, and the capacitance C is sequentially formed between the electrodes. Therefore, voltages are sequentially applied to the X electrodes x1, x2,.

  Similarly, the switching means 21Y is switched to the state in which the switch SW2 is turned on, and the switch on the switching means 21X side is sequentially switched from SW1 to SWn in this state. Next, the switching means 21Y is switched to the state in which the switch SW3 is turned on, and in this state, the switch on the switching means 21X side is sequentially switched from SW1 to SWn. Thus, in the detection process, every time the switch of the switching means 21Y is switched once by a command from the central control unit 30A, the operation of sequentially switching the switch on the switching means 21X side from SW1 to SWn is repeated. Therefore, a voltage is applied at a predetermined frequency to a portion where the X electrodes x1, x2,..., Xn and the Y electrodes, y1, y2,. Capacitance C is formed at a predetermined frequency at the intersection.

  Here, when a detection object such as a finger is brought into contact with or close to an arbitrary position on the operation surface 15 a of the cover sheet 15, a part of the dielectric flux becomes a detection object from the X electrode approaching the detection object. The electrostatic capacity that is pulled out and located in the vicinity of the detection object is reduced. For this reason, since the size of the capacitance C sequentially formed in a matrix changes partially, the amount of change from the X electrodes x1, x2,. A corresponding voltage is detected. The voltage value detected at this time is detected as a voltage value that decreases from a constant voltage value as the distance from the object to be detected is short, and an electrode that is far away is detected as the constant voltage value.

  Each voltage appearing on each of the X electrodes x1, x2,..., Xn is input to the amplifying means 24 in accordance with the switching timing of the switching means 21X from the switches SW1 to SWn. After being amplified by the gain, it is input to the A / D conversion means 25. The A / D conversion means 25 converts each amplified voltage into a digital data signal D at a conversion frequency equal to or higher than the switching frequency of the switching means 21X, and then sends the data signal D to the central control unit 30A. To do. Then, the central control unit 30A analyzes the data signal D sequentially sent from the A / D conversion means 25 to thereby determine the coordinate position (position on the XY plane) of the detected object located on the operation surface 15a. ) Can be made.

  Incidentally, as described above, a plurality of extension lines Ya extending to the routing area By are connected to the Y electrode. Therefore, when an object to be detected such as a finger is brought close to the routing area By, an X electrode (for example, an X electrode x1 or x2) disposed at a position adjacent to the routing area By in the sensing area A; A capacitance C may be formed by any extension line Ya that the detected object approaches. For this reason, the object to be detected is in contact with the sensing area A (position corresponding to the X electrodes x1 and x2) even though the object to be detected is brought into contact with the routing area By other than the sensing area A. An error data signal indicating this may be detected, and a coordinate position generated based on the error data signal may be output from the central control unit 30A.

  Therefore, in the present invention, the central control unit 30A ignores the data signal D acquired from the X electrodes, for example, the X electrodes x1 and x2, provided within a certain range from the routing area By, and detects the coordinate position. Is not used as basic data.

  That is, the central control unit 30A does not first perform the detection process as described above, but performs the region setting process (ST1) as shown in FIG. 4, and then performs the detection process (ST2), the determination process (ST3), A coordinate specifying process (ST4) is performed.

  First, the area setting process (ST1) will be described. As shown in FIG. 3, the cover sheet 15 faces the operation surface 15a and is surrounded by coordinates (x1, y1), coordinates (xn, y1), coordinates (xn, yn), and coordinates (x1, yn). A range of all coordinates is defined as a sensing region A, and X electrodes within a certain range in the sensing region A in the X1 direction from the routing region By are defined as, for example, X electrodes x1 and x2. Similarly, Y electrodes within a certain range in the sensing area A in the Y1 direction from the routing area Bx are defined as Y electrodes yn-1, yn, for example.

  In ST1, as shown in FIG. 3, the central control unit 30A first has coordinates (x1, y1), coordinates (x2, y1) indicated by dotted lines in the vicinity of the routing area By in the sensing area A, A region surrounded by coordinates (x2, yn) and coordinates (xn, y1) is set as a dead zone region Ey. Similarly, the central control unit 30A has coordinates (x1, yn-1), coordinates (xn, yn-1), coordinates (xn, yn) indicated by alternate long and short dash lines in the vicinity of the routing area Bx in the sensing area A. ) And coordinates (x1, yn) are set as the dead zone area Ex (area setting process).

  Next, the central control unit 30A performs all the coordinates (X electrodes x1, x2,..., Xn and Y electrodes, y1, y2,. , Yn) is acquired at a predetermined sampling period (detection process).

  In ST3, it is determined whether the data signal D detected in the detection process is detected from the dead zone areas Ey and Ex or from the operation area F (determination process).

  In ST4, only when the data signal D detected in ST2 is the data signal D detected in the operation region F1, the data signal D is used as basic data for specifying the coordinate position. Then, the coordinate position of the detected object is specified (coordinate specifying process).

  As described above, the present invention does not use the data signal D detected from the dead zone regions Ey and Ex that are highly likely to include an error data signal, but is detected from the operation region F that is unlikely to include an error data signal. Since only the data signal D is used, it is possible to specify a coordinate position with high accuracy for the detected object.

  FIG. 5 is a schematic configuration diagram similar to FIG. 3 showing the operation surface of the cover sheet as a second embodiment of the present invention.

  In FIG. 5, a state in which a cross-shaped operation key (cross key) is formed on the operation surface 15 a of the cover sheet 15 is virtually illustrated.

  For example, when game software is being executed in a main body device (PC (personal computer) or the like) equipped with the capacitance type detection device 10 of the present application, an operation mode using the cross key is selected by the operator. In the computer 30, a cross key program is loaded into the central control unit 30A and executed from among a plurality of programs stored in the memory unit 30B.

  The operation of the detection apparatus shown in the second embodiment is the same as that of the first embodiment. That is, the central control unit 30A executes a cross key program as shown in ST1 of FIG. 4, and a cross-shaped boundary line 41 as shown by a double line in FIG. Form virtually. Then, according to the program, the central control unit 30A sets the inner side of the boundary line 41 as the operation region F1, and sets the outer side of the boundary line 41 as the dead zone region E1 (region setting process). Depending on the program, the inside of the boundary line 41 may be set as the dead zone E1, and the outside of the boundary 41 may be set as the operation area F1.

  Next, the central control unit 30A acquires the data signal D corresponding to all the coordinates in the sensing area A at a predetermined sampling period as shown in ST2 of FIG. 4 (detection process). Then, as shown in ST3, it is determined whether the detected data signal D is detected from the dead zone region E1 or from the operation region F1 (discrimination process), and in ST4, When it is determined that the data signal D is detected from the dead zone E1, the data signal D is not used as basic data for specifying the coordinate position, but is determined to be detected from the operation region F1. Only when it is done, the data signal D is used as basic data for specifying the coordinate position, and the coordinate position of the detected object is specified (coordinate specifying process).

  Therefore, since the operator can operate the operation surface 15a of the cover sheet 15 as a cross key, it is possible to provide the capacitance type detection device 10 that is excellent in operability and mobility.

  If a cross-shaped mark is printed on the surface of the operation surface 15a of the cover sheet 15 and at a position corresponding to the operation area F1, the position where the operator operates as a cross key is visually recognized. To be able to.

  FIG. 6 is a schematic configuration diagram similar to FIG. 3 showing an operation surface of a cover sheet as a third embodiment of the present invention.

  The third embodiment shown in FIG. 6 virtually shows a state in which an annular operation key (ring key) is formed on the operation surface 15 a of the cover sheet 15, that is, in the sensing area A.

  In this case as well, a ring key dedicated program is loaded into the central control unit 30A from the plurality of programs stored in the memory unit 30B in the computer 30 and executed. That is, as shown in FIG. 6, the central control unit 30A virtually forms an inner boundary line 42 and an outer boundary line 43 indicated by two types of double lines having different diameters on the sensing area A. Then, the central control unit 30A sets the region sandwiched between the inner boundary line 42 and the outer boundary line 43 as the operation region F2 according to the program, and sets the inner side of the inner boundary line 42 and the outer side of the outer boundary line 43 to the outside. The dead zones E2 and E3 are set (ST1; region setting process).

  Next, the central control unit 30A acquires the data signal D corresponding to all coordinates in the sensing area A at a predetermined sampling period (ST2; detection process), and the detected data signal D is the dead zone area E2. Alternatively, it is determined whether the signal is output from E3 or the operation region F2 (ST3; determination processing), and the data signal D is output from the dead zone region E2 or E3. In some cases, the detected object is not used as the basic data for specifying the coordinate position, but is used as the basic data for specifying the coordinate position only when it is output from the motion region F2. The coordinate position is identified (ST4; coordinate identification process). Accordingly, the operator can operate the operation surface 15a of the cover sheet 15 as a ring key, and can provide the capacitance type detection device 10 having excellent operability and mobility.

  In the above embodiment, the case where the operation key is a cross key or a ring key has been described. However, the present invention is not limited to this, and for example, a bar-shaped operation key extending linearly in the X direction or the Y direction, In addition, it is possible to use operation keys having various shapes such as a star shape. That is, a plurality of programs corresponding to various operation key pattern shapes are stored in the memory unit 30B of the computer 30, and one pattern is selected and executed.

  Note that the selection of the operation key can be performed as, for example, one process in the running software (for example, game software), and the execution of the operation key can be performed based on the program as described above. The person can set the operation keys flexibly according to the display contents displayed on the monitor display unit of the PC.

The schematic block diagram which shows the electrostatic capacitance type detection apparatus which shows the 1st Embodiment of this invention, Sectional drawing in the II-II line of FIG. FIG. 1 is a schematic configuration diagram similar to FIG. 1 showing an operation surface of the cover sheet and an enlarged sensing area; A flowchart showing the operation of the capacitance type detection device; As a second embodiment of the present invention, a schematic configuration diagram similar to FIG. 3 showing the operation surface of the cover sheet, As a third embodiment of the present invention, a schematic configuration diagram similar to FIG. 3 showing the operation surface of the cover sheet,

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Capacitive type detection apparatus 11 Dielectric sheet 12, 13 Insulating film 14 Board | substrate 15 Cover sheet 15a Operation surface 21X, 21Y Switching means 23 Oscillating means 24 Amplifying means 25 A / D conversion means 26 Storage means 30 Computer 30A Central control part 30B Memory section 41 Boundary line 42 Inner boundary line 43 Outer boundary line A Sensing area Bx, By Routing area Ex, Ey, E1, E2, E3 Dead band area F, F1, F2 Operation area Xa, Ya Extension lines x1, x2, ..., xn X electrode (sensor electrode)
y1, y2, ..., yn Y electrode (sensor electrode)

Claims (8)

A capacitance type detection device that detects a coordinate position using a programmed computer,
A sensing area in which the detection object comes into contact or approaches, and a plurality of sensors that form a capacitance in the sensing area as coordinates and output the position of the detection object as a data signal indicating the change in capacitance An extension line for connecting between the electrodes, the individual sensor electrodes and an external circuit provided outside the sensing area, and an extension line provided in the vicinity of the sensing area and arranged closely Turning area,
Of the sensing area, when the area within a predetermined range adjacent to the routing area is a dead band area, and the area other than the dead band area is an operation area,
Detecting means for acquiring data signals at all coordinates in the sensing region;
Discriminating means for discriminating whether the detected data signal is output from the dead zone area or the operation area;
Coordinate specifying means for specifying the coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation area. Capacitive detection device. A capacitance type detection device that detects a coordinate position using a programmed computer,
A sensing area in which the detection object comes into contact or approaches, and a plurality of sensors that form a capacitance in the sensing area as coordinates and output the position of the detection object as a data signal that is a change in the capacitance Electrodes,
When a boundary line having a predetermined shape is virtually formed in the sensing area, one of the inner side and the outer side of the boundary line is a dead zone area, and the other is an operation area, all the coordinates in the sensing area are Detection means for obtaining a data signal;
Discriminating means for discriminating whether the data signal is output from the dead zone region or the operation region;
Coordinate specifying means for specifying the coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation area. Capacitance type detection device.   The capacitance type detection device according to claim 1, further comprising an area setting unit that divides the sensing area into the dead zone area and the operation area.   4. The capacitance type detection device according to claim 2, wherein a plurality of patterns are prepared as the predetermined shape, and one pattern can be selected from the plurality of patterns.   A plurality of X electrodes extending in the X direction and arranged at a predetermined interval in the Y direction and a plurality of Y electrodes extending in the Y direction and arranged at a predetermined interval in the X direction are orthogonal to each other. 5. The capacitance type detection device according to claim 1, wherein the capacitance type detection device is opposed to each other in a matrix. A method for detecting the coordinate position of a capacitive detection device by a programmed computer,
When a detected object comes into contact with or approaches a sensing area provided in the capacitance type detection device, an electrostatic capacity is formed as a coordinate in the sensing area, and the position of the detected object is set to the electrostatic area. Detecting as a data signal indicating a change in capacity;
Dividing the sensing area into a dead zone area and an operating area;
Determining whether the detected data signal is output from either the dead zone region or the motion region;
And a step of specifying a coordinate position of the detected object using the data signal when it is determined that the data signal is output from the operation region. Coordinate position detection method. A program for coordinate detection used in a capacitance type detection device,
When the detected object comes into contact with or approaches a sensing area provided in the capacitance type detection device, the computer forms a capacitance in the sensing area as a coordinate and determines the position of the detected object. Detecting means for detecting the change in capacitance as a data signal;
When the predetermined area in the sensing area is set as a dead band area and the other area is set as an operation area, the detected data signal is output from either the dead band area or the operation area. Discrimination means for discriminating whether it is a thing
A coordinate detection program for causing the data signal to function as coordinate specifying means for specifying the coordinate position of the detected object when it is determined that the data signal is output from the operation area.   The coordinate detection program according to claim 7, further comprising region setting means for dividing the sensing region into the dead zone region and the motion region.

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