JP2015079350A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that detects touch inputs and performs display processing including erasure processing for display image according to the detection result while the processing is not complex and no power source is necessary for an erasure instruction input device.SOLUTION: A display device 1 includes a sensor system 11 which can detect a plurality of touch inputs to a display part 10 and a drawing processing part 15 which executes drawing processing or erasure processing on the display part 10 according to the detection result of the sensor system 11. The display device stores an input pattern for erasure processing when a plurality of simultaneous touch inputs for erasure processing to the sensor system 11 are performed by an instruction input device, determines whether the pattern consisting of the plurality of simultaneous touch inputs matches the input pattern for erasure processing when the sensor system 11 detects the plurality of simultaneous touch inputs, and performs erasure processing by the drawing processing part 15 according to the detection result of the sensor system 11 when it is determined that the pattern matches the input pattern for erasure processing.

Description

  The present invention relates to a display device that detects a touch input and performs display according to a detection result, and particularly relates to a display device that performs display image erasure processing according to a detection result.

Previously, characters were erased by overwriting images or characters with the same color as the background based on single touch information with a pen or finger. However, this method requires a large area to be erased by the user. It is difficult to erase in a short time.
Methods for solving the above points are disclosed in, for example, Patent Documents 1 to 3.

  Patent Document 1 detects the input area and input shape of a handwriting input device for a pressure-sensitive touch panel, identifies the type of handwriting input device that has performed an input operation based on the detected input area and input shape, and erases it. A handwriting input device is disclosed that performs an erasing process in accordance with the locus of an eraser by a drawing processing unit when an instruction input device, that is, an eraser is recognized.

  In Patent Document 2, touch position candidate points are extracted based on a level signal for each electrode of a capacitive touch panel, and the touch position candidate points are connected to each other adjacent to each other according to a predetermined connection condition. A touch panel is disclosed in which an object area predicted to have been touched is extracted, and whether or not the object area is based on the outer shape and size of the object area is determined.

  In Patent Document 3, when a coordinate input instruction is performed on an input surface from an eraser having a plurality of electromagnetic coordinate instruction units, the coordinates of the plurality of coordinate instruction units by the eraser are detected, and at least two of the coordinates are detected. While calculating the straight line to be connected, when the eraser continuously moves on the input surface while being in contact with the input surface, the two-dimensional region formed by the locus of the straight line is calculated. An information processing apparatus for erasing the displayed image is disclosed.

JP-A-8-286830 JP 2011-134669 A JP-A-8-263212

However, in the methods disclosed in Patent Document 1 and Patent Document 2, in order to prevent erroneous detection of the eraser, it is necessary to accurately define the input shape and input area by the eraser at the time of detection. If defined in the above, processing becomes complicated.
In the method disclosed in Patent Document 3, a power source is required for the eraser.

  The present invention has been made in view of the above circumstances, and detects touch input and performs display processing including display image erasure processing according to the detection result. An object of the present invention is to provide a display device that does not require a power source for an instruction input device.

In order to solve the above problems, a first technical means of the present invention includes a display unit that displays various information, a sensor system that can simultaneously detect a plurality of touch inputs to the display unit, and a detection result in the sensor system. And a drawing processing unit that executes a drawing process or an erasing process on the display unit in response to the touch input for a plurality of simultaneous erasing processes to the sensor system by the instruction input device. A memory unit for storing the input pattern for erasing processing, and when the sensor system detects a plurality of simultaneous touch inputs, the pattern composed of the detected simultaneous touch inputs matches the input pattern for erasing processing. A determination unit configured to determine whether or not the drawing processing unit matches the erasing process input pattern. It is obtained by and performs the erasing process in accordance with the detection result of the service system.

  According to a second technical means of the present invention, in the first technical means, the input pattern for erasing processing is configured by regularly arranging a plurality of input patterns.

  According to a third technical means of the present invention, in the first or second technical means, the storage unit is for drawing processing when a touch input for drawing processing is performed on the sensor system by the instruction input device. An input pattern is stored, and when the determination unit detects a plurality of simultaneous touch inputs in the sensor system, whether or not a pattern formed by the detected plurality of simultaneous touch inputs matches the drawing processing input pattern. When the determination is made and the determination unit determines that the input pattern matches the drawing process input pattern, the drawing processing unit performs the drawing process according to a detection result of the sensor system.

  According to a fourth technical means of the present invention, in the third technical means, the drawing processing input pattern has a plurality of types, and the drawing processing unit determines the type of the drawing processing input pattern that the determination unit has determined to match. The normal drawing process is made different according to the above.

  A fifth technical means of the present invention is an instruction input device for a sensor system capable of simultaneously detecting a plurality of touch inputs, comprising a plurality of input units that do not require a power source for performing the touch inputs, and the plurality of inputs A plurality of touch inputs can be simultaneously performed by the unit, and a pattern of the plurality of simultaneous touch inputs can be changed by a user operation.

  According to the display device of the present invention, it is possible to prevent the processing from becoming complicated and to eliminate the need for a power source for the erasure instruction input device.

It is a figure explaining the structural example of the display apparatus of the 1st Embodiment of this invention. It is a figure explaining the structural example of the eraser of FIG. FIG. 3 is a diagram showing a distribution of capacitance variation detected by the display device when the display device of FIG. 1 is touched with the eraser of FIG. 2. It is a figure which shows distribution of the variation | change_quantity of the electrostatic capacitance detected with this display apparatus, when a touch operation is performed on the display apparatus of FIG. It is a block diagram explaining the function of the display apparatus of FIG. It is a flowchart which shows an example of the drawing process in the display apparatus of FIG. It is a figure explaining the structural example of the display apparatus of the 2nd Embodiment of this invention. It is a figure explaining the structural example of two mice | mouths of FIG. FIG. 9 is a diagram showing a distribution of capacitance variation detected by the display device when the display device of FIG. 7 is touched with the eraser of FIG. 8. FIG. 9 is a diagram showing a distribution of capacitance variation detected by the display device when the display device of FIG. 7 is touched with the eraser of FIG. 8. It is a block diagram explaining the function of the display apparatus of FIG.

  Hereinafter, preferred embodiments of a display device of the present invention will be described with reference to the drawings. In the following inventions, the same reference numerals are used in different drawings, and the description thereof is omitted.

FIG. 1 is a diagram illustrating a configuration example of a display device according to the first embodiment of the present invention.
The display device 1 of FIG. 1 includes a display unit 10 that displays various types of information, and includes a sensor system 11 on the front surface of the display unit 10. The sensor system 11 is an electrostatic capacity type capable of simultaneously detecting a plurality of touch inputs to the sensor system 11.

When the user performs touch input on the display device 1, that is, on the sensor system 11 with the finger T <b> 1 or the pen T <b> 2, the display device 1 performs normal drawing processing according to the detection result of the touch input on the sensor system 11. Is displayed on the display unit 10.
Further, when the user performs touch input to the sensor system 11 with the eraser T3, the display device 1 performs display image erasure processing on the display unit 10 in accordance with the detection result of the touch input by the sensor system 11.

FIG. 2 is a diagram for explaining a configuration example of the eraser T3.
The eraser T3 has a special shape for preventing erroneous detection. Specifically, the eraser T3 has a total of six input portions T32 made of circular conductors on a surface T31 on the sensor system 11 side in two by three rows. . The number of input units T32 is not limited to six, but is preferably six or more in order to be surely distinguished and identified from input by a user's finger.
This eraser T3 is a passive type and does not require a power source.

FIG. 3A is a diagram three-dimensionally showing the distribution of the amount of change in capacitance detected by the display device 1 when the display device 1 is touched by the eraser T3, with the amount of change as the Z-axis direction. FIG. 3B is a diagram showing in gray the portion where the same distribution is detected and the change in capacitance is detected.
FIG. 4A is a diagram three-dimensionally showing the distribution of the amount of change in capacitance detected by the display device 1 when the display device 1 is touched with a finger or the like, and FIG. It is a figure which shows the part which was the same distribution and from which the change of the electrostatic capacitance was detected in gray.
3A and 3A, the sensor surface of the sensor system 11 is the XY plane, and the capacitance change amount is the Z-axis direction.

As shown in the distribution D1 in FIG. 3A, the distribution D2 in FIG. 3B, the distribution D3 in FIG. 4A, and the distribution D4 in FIG. 4B, the case of touch input by the eraser T3 and the finger The number of positions where the capacitance detected by the input arrangement detection unit 13a changes and the positional relationship differ in the case of touch input by, for example, a different touch input position pattern.
In the display device 1 of FIG. 1, it is determined whether or not the touch input source is the eraser T3 by utilizing the difference in the touch input position pattern as described above.

FIG. 5 is a block diagram illustrating functions of the display device 1 of FIG.
In addition to the display unit 10 and the sensor system 11, the display device 1 includes a drive unit / capacitance value acquisition unit 12, a touch recognition processing unit 13, a storage unit 14, and a drawing processing unit 15.

  The display unit 10 includes, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display, and displays the processing result of the drawing processing unit 15.

  The sensor system 11 is of the electrostatic capacity type as described above, and the transmission electrodes that are parallel to each other and the reception electrodes that are parallel to each other are orthogonal to each other and arranged in a matrix.

  The drive unit / capacitance value acquisition unit 12 applies a drive signal to the transmission electrode of the sensor system 11, receives the charge / discharge current signal of the reception electrode in response to the drive signal, and transmits based on the charge / discharge current signal The capacitance value for each electrode intersection between the electrode and the receiving electrode is acquired. For example, when there is a conductive object close to the electrode intersection, that is, when there is a touch operation, the capacitance changes at the electrode intersection, so the charge / discharge current signal received by the reception electrode changes. The capacitance value when the touch operation is performed can be acquired by converting the amount of change.

The touch recognition processing unit 13 includes an input position detection unit 13a and a determination unit 13b.
The input position detection unit 13 a detects the touch input position from the distribution pattern of the capacitance value at the electrode intersection of the sensor system 11 output from the drive unit / capacitance value acquisition unit 12. The touch input position may consist of one intersection of the transmission electrode and the reception electrode, or may consist of a plurality of adjacent intersections.

  The memory | storage part 14 memorize | stores various information, for example, can be comprised using HDD (Hard Disk Drive). In particular, the storage unit 14 stores a touch input position pattern detected by the input position detection unit 13a when a touch input is made to the sensor system 11 by the eraser T3 of FIG. The memory | storage part 14 memorize | stores the relative coordinate of each touch input position as a pattern of the said touch input position, for example. The touch input position pattern can be arbitrarily set by the user. In addition, the touch input position pattern by the eraser T3, that is, the erasing process input pattern is a rule in which a plurality of touch input position patterns are arranged like a pattern in which three rows are arranged at equal intervals in the example of FIG. It is preferable to be arranged and configured.

  The determination unit 13b determines whether the touch input position pattern detected by the input position detection unit 13a matches the touch input position pattern stored in the storage unit 14 when touch input is performed by the eraser T3. .

  The drawing processing unit 15 performs drawing processing according to the determination result in the determination unit 13b. More specifically, the drawing processing unit 15 performs normal drawing processing according to the touch input when the determination unit 13b determines that they do not match, and detects when the determination unit 13b determines that they match. The already drawn information in the area surrounded by the touch input position is overwritten with the background color, and the erasing / erasing process is performed. Note that the area where the eraser process is performed may be larger or smaller than the area as long as it is substantially the same as the area surrounded by the touch input position.

FIG. 6 is a flowchart showing an example of a drawing process in the display device 1 of FIG.
During the drawing process, in the display device 1, first, the input position detection unit 13a determines whether or not there is a touch input (step S1). When it is determined that there is no touch input (in the case of NO), the process returns to step S1, and when it is determined that there is a touch input (in the case of YES), the determination unit 13b has six touch input positions detected. It is determined whether or not it is a point (step S2).
When the number of touch input positions is 6, the determination unit 13b stores the detected touch input position pattern stored in the storage unit 14 and the touch input position pattern when the touch input is performed by the eraser T3. It is determined whether they match (step S3).

  If the number of touch input positions is not six (in the case of step S2, NO) or the pattern of the touch input positions does not match (in the case of step S3, NO), the display device 1 shifts the drawing mode to the normal drawing mode. (Step S6), the drawing processing unit 15 performs a normal drawing process corresponding to the touch input (Step S7), and the process returns to Step S1.

  When it is determined in step S3 that the touch input position patterns match (in the case of YES), the display device 1 shifts the drawing mode to the eraser mode (step S4), and the drawing processing unit 15 stores the information already drawn. Of these, the area surrounded by the detected touch input position is overwritten with the background color, eraser processing is performed (step S5), and the process returns to step S1.

  In this way, a plurality of conductors are provided in the eraser so that the eraser generates a predetermined multi-touch signal pattern such as a regular pattern, and the display device side detects that the predetermined multi-touch signal pattern is detected. By performing the eraser process as a trigger, the eraser itself does not require electrical processing, and in order to distinguish the eraser from other touch signals, complex processing to accurately recognize the size and shape is also possible. It is unnecessary.

FIG. 7 is a diagram illustrating a configuration example of a display device according to the second embodiment of the present invention.
The display device 1 in FIG. 1 is used such that the display screen is a vertical plane like a whiteboard, whereas the display device 1 ′ in FIG. Two mouse-shaped devices are used as the drawing information input device. Hereinafter, these two mouse-shaped devices are referred to as mouse U1 and mouse U2.
The mouse U1 and the mouse U2 are respectively provided with a left click button and a right click button.

  For example, when the user slides the mouse U1 on the display device 1 ′ while pressing the left click button, the display device 1 ′ performs normal drawing processing according to the detection result of the sensor system 11, and displays the display. Displayed on the unit 10. When the user slides the mouse U1 on the display device 1 ′ while pressing the right click button, the display device 1 ′ displays an image displayed on the display unit 10 in accordance with the detection result of the sensor system 11. Perform erasure processing.

  On the other hand, when the user slides the mouse U2 on the display device 1 ′ while pressing the left click button, the display device 1 ′ is different from the mouse U1 according to the detection result of the sensor system 11. In the form, for example, a normal drawing process is performed with different colors, and the result is displayed on the display unit 10. When the user slides the mouse U2 on the display device 1 ′ while pressing the right-click button, the display device 1 ′ responds to the detection result of the sensor system 11 as in the case of the mouse U1. Then, an erasing process of the display image on the display unit 10 is performed.

FIG. 8A illustrates a configuration example of the mouse U1, and FIG. 8B illustrates a configuration example of the mouse U2.
As shown in FIG. 8A, the mouse U1 has six input portions U12 made of a circular conductor, a left click conductor / input portion U13, and a right click on the surface U11 on the sensor system 11 side. Conductor / input unit U14.
As shown in FIG. 8B, the mouse U2 has six input portions U22 made of a circular conductor on the surface U21 on the sensor system 11 side. The arrangement of the input unit U22 is different from the arrangement of the input unit U12 of the mouse U1. The mouse U2 has a left click conductor / input portion U23 and a right click conductor / input portion U24 on the surface U21.
The left click conductor / input units U13 and U23 and the right click conductor / input units U14 and U24 are in contact with the sensor system 11 only when a click operation is performed.
These mice U1 and U2 are passive types and do not require a power source.

FIG. 9 and FIG. 10 are diagrams showing in gray a region where a change in capacitance is detected by the display device 1 ′ when the display device 1 ′ is operated by the mouse U1 or the mouse U2.
The distribution D5 in FIG. 9 shows a pattern D51 of a region in which a change in capacitance is detected when operated with the mouse D1 in the left-clicked state, and a capacitance when operated with the mouse D2 in the left-clicked state. A pattern D52 of a region in which a change in is detected is shown.
The distribution D6 in FIG. 10 shows a pattern D61 of a region in which a change in capacitance is detected when operated with the right-clicked mouse D1, and a capacitance when operated with the right-clicked mouse D2. A pattern D62 of a region in which a change in is detected is shown.

As shown in the distribution D5 in FIG. 9 and the distribution D6 in FIG. 10, the touch input by the mouse D1 in the left click state, the touch input by the mouse D1 in the right click state, and the touch by the mouse D2 in the left click state In the case of input and the case of touch input by the mouse D2 in the right-click state, the number of positional changes and the positional relationship detected by the display device 1 ′ are different, in other words, the detected touch. The input position pattern is different.
In the display device 1 ′ in FIG. 7, the touch input source and the operation state thereof are discriminated by using the fact that the touch input position patterns are different.

  FIG. 11 is a block diagram illustrating functions of the display device 1 ′ of FIG. 7.

  The storage unit 14 ′ of the display device 1 ′ in FIG. 11 stores various types of information, similar to the storage unit 14 in FIG. 3, and can be configured using, for example, an HDD (Hard Disk Drive). However, the storage unit 14 ′ has a touch input position pattern detected by the input position detection unit 13a when the touch input is performed by the mouse D1 in a state where the left click button is pressed (hereinafter, referred to as a first left click pattern). Remember. Similarly, the storage unit 14 ′ has a touch input position pattern (hereinafter referred to as a first right click pattern) detected when a touch input is made by the mouse D 1 in a state where the right click button is pressed, and a left click button is displayed. Touch input position pattern (hereinafter referred to as second left click pattern) detected when touch input is performed with the mouse D2 in the pressed state, and touch input with the mouse D2 in the state where the right click button is pressed The touch input position pattern (hereinafter referred to as the second right click pattern) detected is stored.

  The first and second left click patterns and the first and second right click patterns can be arbitrarily set by the user.

The determination unit 13b ′ includes first to fourth determination units 131 to 134. The first determination unit 131 stores the touch input position pattern detected by the input position detection unit 13a in the storage unit 14 ′. It is determined whether the first left click pattern matches. Similarly, the second determination unit 132 determines whether the detected touch input position pattern matches the first right-click pattern, and the third determination unit 133 detects the detected touch input position pattern. Is determined to match the second left click pattern, and the fourth determination unit 134 determines whether the detected touch input position pattern matches the second right click pattern.

  The drawing processing unit 15 ′ performs drawing processing according to the determination results of the first to fourth determination units 131 to 134. More specifically, the drawing processing unit 15 ′ performs normal drawing processing according to the touch input when the first determination unit 131 determines that they match. Further, when it is determined that the third determination unit 133 matches, a normal drawing process corresponding to the touch input with a color different from the case where the first determination unit 131 determines that they match is performed. On the other hand, when it is determined by the second determination unit 132 or the fourth determination unit 134 to match, the already drawn information in the area surrounded by the detected touch input position is overwritten with the background color and deleted. Perform eraser processing.

  In the above example, the left click pattern and the right click pattern, that is, the input pattern for the normal drawing process and the input pattern for the eraser process are partially the same. There may be. However, the size of the mouse can be reduced by using the same part.

  In the above example, the mouse has one click button for erasure processing and one click button for normal drawing processing. However, a plurality of click buttons for normal drawing processing are provided. The corresponding input pattern may be stored in the storage unit, and the content of the drawing process may be varied depending on which of the input patterns is matched.

  The display device displays a variety of information, a sensor system capable of simultaneously detecting a plurality of touch inputs to the display unit, and performs a drawing process or an erasing process on the display unit according to a detection result of the sensor system A drawing processing unit that stores an input pattern for erasing processing when a plurality of simultaneous erasing processing touch inputs are performed on the sensor system by an instruction input device; and A determination unit configured to determine whether or not a pattern composed of the detected plurality of simultaneous touch inputs matches the input pattern for erasure processing when a plurality of simultaneous touch inputs are detected by the sensor system; Is determined to match the input pattern for erasure processing, the drawing processing unit performs the erasure processing according to the detection result of the sensor system. It is carried out. It is possible to prevent complication of processing related to recognition of the erasure processing instruction and to eliminate the need for a power source for the erasure instruction input device.

  The storage unit stores a drawing process input pattern when a drawing process touch input is performed on the sensor system by the instruction input device, and the determination unit performs a plurality of simultaneous touches on the sensor system. When an input is detected, it is determined whether a pattern composed of the detected multiple touch inputs coincides with the drawing process input pattern, and the determination unit determines that the pattern matches the drawing process input pattern The drawing processing unit may perform the drawing process according to a detection result of the sensor system. Accordingly, it is possible to input a drawing process instruction from an instruction input device that inputs an erasing process instruction.

  There are a plurality of types of input patterns for drawing processing, and the drawing processing unit may vary the normal drawing processing according to the type of input pattern for drawing processing that the determination unit determines to match. Thereby, different drawing processes can be performed according to the type of drawing process instruction from the instruction input device.

  The touch input unit of the instruction input device may include a plurality of conductors having a predetermined pattern, and the sensor system may be of a capacitive type.

  The instruction input device is for a sensor system capable of detecting a plurality of touch inputs at the same time, and has a plurality of input units that do not require a power source for performing the touch inputs. It is possible to change the pattern of a plurality of touch inputs simultaneously by a user operation. By using this instruction input device. It is possible to prevent complication of processing related to recognition of the erasure processing instruction and to eliminate the need for a power source for the erasure instruction input device. Further, it is possible to input a drawing process instruction from an instruction input device that inputs an instruction for an erasing process.

DESCRIPTION OF SYMBOLS 1,1 '... Display apparatus, 10 ... Display part, 11 ... This sensor system, 12 ... Capacitance value acquisition part, 13 ... Touch recognition process part, 13a ... Input position detection part, 13b, 13b' ... Determination part, 14 ... Storage unit, 15... Drawing processing unit.

Claims (5)

A display unit for displaying various information, a sensor system capable of simultaneously detecting a plurality of touch inputs to the display unit, and a drawing processing unit for performing a drawing process or an erasing process on the display unit according to a detection result of the sensor system A display device comprising:
A storage unit for storing an input pattern for erasing processing when a plurality of simultaneous erasing processing touch inputs are performed on the sensor system by an instruction input device;
A determination unit that determines whether or not a pattern of the detected simultaneous touch inputs matches the input pattern for erasure processing when detecting a plurality of simultaneous touch inputs in the sensor system;
When the determination unit determines that the input pattern matches the erasure processing input pattern, the drawing processing unit performs the erasure processing according to a detection result of the sensor system.   The display device according to claim 1, wherein the input pattern for erasure processing is configured by regularly arranging a plurality of input patterns. The storage unit stores an input pattern for drawing processing when a touch input for drawing processing is performed on the sensor system by the instruction input device;
The determination unit determines whether or not a pattern composed of the detected multiple simultaneous touch inputs matches the input pattern for drawing processing when detecting a plurality of simultaneous touch inputs in the sensor system;
The said drawing process part performs the said drawing process according to the detection result in the said sensor system, when the said determination part determines with agree | coinciding with the said input pattern for drawing processes. Display device. There are multiple types of drawing processing input patterns,
The display device according to claim 3, wherein the drawing processing unit changes the normal drawing processing according to a type of the input pattern for drawing processing that the determination unit determines to match. An instruction input device for a sensor system capable of simultaneously detecting a plurality of touch inputs,
It has a plurality of input units that do not require a power source for performing the touch input, the plurality of input units can simultaneously perform a plurality of touch inputs, and the pattern of the plurality of simultaneous touch inputs can be changed by a user operation. An instruction input device characterized by the above.

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