JP2010033107A - Display with touch panel, program, recording medium and usb switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display with touch panel, for easily performing two-point pushing operation by a simple structure. <P>SOLUTION: The programmable display 3 includes a USB terminal 38, and a touch panel 33 of the programmable display 3 is an analog touch panel. The programmable display 3 further includes a USB input processing part 313 which receives input by a USB switch 7 connected to the USB terminal 38 as the same input operation as the touch input to a predetermined position of the touch panel 33. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device with a touch panel, and particularly to a technique for realizing a two-point press operation in a display device with a touch panel.

  The touch panel includes a digital touch panel and an analog touch panel.

  In a digital touch panel, a large number of matrix switches are arranged on the touch panel, and each matrix switch detects a touch input. For this reason, even when touch input is performed at a plurality of positions on the touch panel, the corresponding matrix switch detects the touch input, so that each position input by touch can be determined.

  However, in the digital touch panel, when a specific position on the display screen is frequently touch-input, the matrix switch at the position is likely to break down. For this reason, the digital touch panel has disadvantages that it has low durability and is expensive. On the other hand, for example, techniques described in Patent Documents 1 and 2 have been proposed.

  In Patent Document 1, the transparent electrode film is deteriorated by forming a system with a CPU having a built-in counter and a transmission circuit, which is attached to a glass plate on a transparent electrode sheet obtained by printing a pattern electrode with an ITO transparent electrode on a PET film. We are proposing a highly reliable digital touch panel with less aging.

  In Patent Document 2, a signal output from a touch panel through a transmission circuit is input to an input capture, and when the touch panel is pressed by obtaining a highly accurate value by obtaining the number of times necessary to capture repeatedly. We have proposed a highly reliable digital touch panel that detects a small change in electrostatic capacitance at a low cost, and makes a stable determination of ON / OFF and also a pseudo determination of pressing.

  On the other hand, the analog type touch panel is excellent in durability and inexpensive, and has an advantage that it can easily cope with fine touch input by a touch pen. A general analog touch panel is provided with two resistive films apart from each other, and at the touch position, the reference voltage applied to one resistive film is divided by the other resistive film, so that the detected voltage value is large or small. To detect the coordinate positions in the X direction and the Y direction.

  However, the analog touch panel has a principle that only one touch position can be recognized, and if two touch points are input simultaneously, the intermediate point is mistaken as the touch position. On the other hand, for example, techniques described in Patent Documents 3 to 5 have been proposed.

  In Patent Document 3, the voltage value detected when two resistive films are simultaneously in contact at two locations by two-point pressing, the two resistive films are in contact only at the midpoint of the two locations. The midpoint is detected as the contact position by being the same as the voltage value detected in this case. Here, in the case of two-point pressing, the current flowing into the electrodes provided in each resistive film is larger than when only the middle point of the two locations is touch-input. Thereby, it is possible to determine whether or not two points are pressed.

  Also in Patent Document 4, as in Patent Document 1, when two points are pressed, the midpoint of the two points is detected as the contact position, the resistance between the two points decreases, and the detected current increases. It is detected whether or not two points are pressed. Furthermore, when another point is touch-input while a certain point is being touch-inputted, the position previously touch-inputted is sampled, and the other one point is determined from the position and the position of the middle point of the two points. By calculating the position of, each position pressed by two points is detected.

In Patent Document 5, when two points are pressed, the middle point of two points is detected as a contact position. However, when one point is touch-input while another point is touch-input, the position previously touch-inputted It is detected whether or not it is a two-point press because the time from the detection of the point to the detection of the midpoint of the two points as the contact position is very short. Similarly to Patent Document 4, each position pressed by two points is calculated from the position previously touched and the position of the midpoint of the two points.
JP 2004-213114 A (released July 29, 2004) Japanese Patent Laying-Open No. 2005-18669 (released on January 20, 2005) JP 2001-60143 A (published on March 6, 2001) Japanese Patent Laid-Open No. 9-34625 (published February 7, 1997) JP 2000-105645 A (published April 11, 2000)

  However, in the digital touch panel, the configurations according to Patent Documents 1 and 2 only improve the durability and operability of the digital touch panel, and even if the matrix switch fails, the two points are pressed. A configuration for detecting each of the positions is not disclosed.

  Therefore, when two-point press is performed, a pseudo two-point press is realized by substituting one touch input of two points, in particular, an input from a failed matrix switch for an input operation from another input device. The structure which performs is considered. Its configuration will be described later.

  In addition, in the analog touch panel, the configuration according to Patent Document 3 can only determine whether or not two points are pressed, and does not disclose a configuration for detecting the positions of two touch-input points.

  Further, when the two points are touched with different pressures, a position shifted from the middle point between the two points may be detected as the contact position. In addition, when a touch input is performed with a finger, the contact area is wide, and therefore, the coordinate position detected as the midpoint of the two points also varies. In the configurations according to Patent Documents 4 and 5, since the position touched later is calculated from the position touched first and the position of the middle point of the two points, the position touched later cannot be accurately detected. Cause problems.

  Therefore, when performing a two-point press, a configuration that realizes a pseudo two-point press by substituting one of the two touch inputs with an input operation from another input device is conceivable.

  As such a configuration, for example, a display screen portion of a display device with a touch panel is reduced and a mechanical keyboard is provided at the lower portion of the display screen, or a mechanical I / O switch is connected to the display device with a touch panel. A configuration is mentioned.

  In a configuration in which a mechanical keyboard is provided, a display device with a touch panel realizes a pseudo two-point press by accepting an input operation with the keyboard as one touch input operation of two points. In a configuration in which a mechanical I / O switch is connected to a display device with a touch panel, a program that synchronizes information input by pressing the indicated touch panel screen and information input from the I / O switch, It is installed in a display device with a touch panel, and a pseudo two-point press is realized by simultaneously detecting the position corresponding to the input by the I / O switch and the input position of the touch panel other than the position.

  However, in a configuration in which a mechanical keyboard is provided, new wiring and power supply for the keyboard are required. In addition, since a space for providing a keyboard in the vicinity of the display screen is required, there is a problem that a display device with a touch panel becomes large. On the other hand, when the size of the display device with a touch panel is fixed, there is a problem that the space occupied by the display screen portion is reduced because a space for providing a mechanical keyboard is required.

  In addition, in the configuration in which a mechanical I / O switch is connected to a display device with a touch panel, new wiring and power supply for the I / O switch are required, and a space for installing the I / O switch is required. Problem arises.

  In principle, a program that operates in a display device with a touch panel is not created in consideration of whether the touch panel is an analog type or a digital type. When a two-point press program is incorporated in a part of a program executed by a display device with a touch panel, when the touch panel is digital, the two-point press program can be executed, but when the touch panel is analog Makes it difficult to execute a two-point press program. Therefore, when the touch panel is an analog type, a program that avoids the two-point pressing operation must be created, which is troublesome.

  The present invention has been made in view of the above problems, and an object thereof is to realize a display device with a touch panel that can easily perform a two-point pressing operation with a simple configuration.

  In order to solve the above problems, a display device with a touch panel according to the present invention is a display device with a touch panel having a USB terminal connected to a USB switch device, and an input signal from the USB switch device is transferred to a predetermined position on the touch panel. USB input processing means for receiving the same input operation as the touch input signal is provided.

  According to the above configuration, when the USB switch device is connected to the USB terminal and an input operation is performed on the USB switch device, the USB input processing unit accepts a touch input to a predetermined position on the touch panel. Thereby, the touch input to the predetermined position can be performed in a pseudo manner by the USB switch device.

  In the display device with a touch panel according to the present invention, the USB input processing means receives two signals of an input signal from the USB switch device and a touch input signal to a position on the touch panel other than the predetermined position. Sometimes, it is preferable to perform the same processing as when two signals of a touch input signal to a predetermined position on the touch panel and a touch input signal to a position on the touch panel other than the predetermined position are received in an overlapping manner.

  According to the above configuration, when the USB switch device is connected to the USB terminal and an input operation is performed on the USB switch device, the USB input processing unit accepts a touch input to a predetermined position on the touch panel. Thus, by performing touch input at a position other than the predetermined position on the touch panel while maintaining the input by the USB switch device, the two-point pressing operation between the predetermined position and the other position is also performed on the touch panel. It can be done in a pseudo manner.

  The USB terminal is provided as standard equipment in many display devices, and power can be supplied from the USB terminal. Therefore, the USB switch device does not require a separate wiring for supplying power. Furthermore, since the USB switch device can be carried and can be used simply by connecting to the USB terminal, a space for installing the USB switch device is not required.

  Therefore, it is possible to realize a display device with a touch panel that can easily perform a two-point press operation with a simple configuration.

  Here, by performing an input operation with the USB switch device, the USB input processing means accepts a touch input to one of the two points. Here, by performing a touch input to the other of the two points while maintaining the input by the USB switch device, the two points can be input simultaneously.

  In the display device with a touch panel according to the present invention, the touch panel may be a digital touch panel.

  According to the above configuration, the two-point press in the display device with a digital touch panel including the failed matrix switch can be easily performed with a simple configuration.

  In the display device with a touch panel according to the present invention, the touch panel may be an analog touch panel.

  According to the above configuration, the two-point press in the display device with an analog touch panel, which is said to be technically difficult, can be easily performed with a simple configuration.

  The display device with a touch panel may be realized by hardware or may be realized by causing a computer to execute a program. Specifically, the program according to the present invention is a program that causes a computer to operate as the USB input processing means having any one of the above configurations, and the program is recorded on the recording medium according to the present invention. The program may be stored in the storage unit of the USB switch device.

  As described above, the display device with a touch panel according to the present invention is a display device with a touch panel having a USB terminal connected to the USB switch device, and an input signal from the USB switch device is input to a predetermined position on the touch panel. Since it is equipped with USB input processing means that accepts the same input operation as the signal, a 2-point press operation can be easily performed with a simple configuration, and a touch panel display device that can secure a large touch panel installation area is realized. There is an effect that can be done.

  One embodiment of the present invention is described below with reference to FIGS. In this embodiment, an example in which the present invention is applied to a control system using a programmable display will be described.

  FIG. 2 is a block diagram showing a schematic configuration of the control system 1 according to the present embodiment. The control system 1 includes a host computer 2, a programmable display 3, a programmable logic controller (PLC) 4, and a network 5, and a device 6 that is a device to be controlled is connected to each PLC 4.

  The programmable display 3 includes an arithmetic processing unit such as a CPU, and the host computer 2 activates the screen data 2a and the control program 2b created by the user, thereby realizing a specific operation function and display function. It is. Each programmable display 3 is connected to each other by a network 5 and acquires the state of each device 6 displayed on the display screen via the PLC 4 through communication with the PLC 4 via a serial cable, and the display described later The status of each device 6 is displayed at 32. Further, the programmable display 3 instructs the PLC 4 to control the state of the device 6 in response to an operation on the touch panel 33 described later.

  The host computer 2 is a general-purpose personal computer and has a function of creating and editing the screen data 2a and the control program 2b for causing the programmable display 3 to function as described above. Specifically, the host computer 2 includes a control unit 21, an editor unit 22, a storage unit 23, and an interface (I / F) unit 24.

  The I / F unit 24 is a communication control unit for performing communication with each programmable display 3 and is connected to the network 5. The control unit 21 is a functional block realized by hardware (CPU, memory, etc.) and software (operating system, etc.), and controls the execution of application programs and the operation of peripheral devices.

  The editor unit 22 has a function of creating and editing the screen data 2a and the control program 2b, such as a switch, a lamp, a numeric keypad, various displays (for example, a numerical display, a meter display, and a graph display). Has a drawing function and a text input function. The created and edited screen data 2a and control program 2b are stored in the storage unit 23. Further, the editor unit 22 reads the screen data 2 a and the control program 2 b from the storage unit 23 and transfers them to each programmable display 3 via the network 5.

  The editor unit 22 has a USB input setting unit 221. The USB input setting unit 221 sets whether or not to allow input by the USB switch 7 described later, and sets the input by the USB switch 7 and the input at a predetermined position on the touch panel 33. This setting content is written in the screen data 2a and the control program 2b.

  In the control system 1, for example, by pressing two points on the display screen of the programmable display device 3 during maintenance of the device 6, the device 6 can be urgently stopped or moved to a hidden maintenance screen. It is like that. As will be described later, when the touch panel of the programmable display 3 is a digital touch panel, when one of the matrix switches fails even when two-point press is realized by simultaneously touch-inputting two points away from the touch panel Cannot detect two-point press even if two touch points on the touch panel are simultaneously input. Moreover, when the touch panel of the programmable display 3 is an analog touch panel, even if two touch points separated from the touch panel are simultaneously input, the positions of the two points cannot be detected.

  Therefore, the programmable display 3 is provided with a USB terminal for connecting to a USB device, and the user of the programmable display 3 connects the USB switch 7 to the programmable display 3 and performs an input operation with the USB switch 7. By performing touch input on the touch panel while performing, a two-point pressing operation is possible.

  Next, specific configurations of the programmable display 3 and the USB switch 7 will be described.

  FIG. 1 is a block diagram showing the configuration of the programmable display 3 and the USB switch 7 according to the present embodiment. The programmable display 3 includes an HMI processing unit 31, a display 32, a touch panel 33, a storage unit 34, interface (I / F) units 35 and 36, a USB interface (USB / I / F) unit 37, and a USB terminal 38. ing.

  The HMI processing unit 31 is a functional block realized by causing arithmetic processing means such as a CPU provided in the programmable display 3 to execute various programs stored in the storage unit 34. The display 32 is preferably a flat display such as a liquid crystal display, an EL display, or a plasma display in order to configure the programmable display 3 to be thin.

  The touch panel 33 is an input device provided for performing touch input on the display screen of the display 32. In the present embodiment, the touch panel 33 is of two types, digital and analog. Even if the touch panel 33 is a digital type or an analog type, the touch panel 33 includes two resistive films apart from each other.

  In the case of a digital touch panel, switches with electrodes arranged like a checkerboard called a matrix switch are arranged, and when the user presses a part of the surface, the upper and lower two layers of electrodes come into contact with each other, and the electric circuit is Composed. Accordingly, the touch panel 33 generates a digital detection signal corresponding to the touch position.

  In the case of an analog touch panel, a reference voltage is applied to each resistance film. When a touch input is made on the touch panel 33, the reference voltage applied to one resistance film is applied to the other resistance film at the touch position. Divided pressure. Thereby, the touch panel 33 generates an analog detection signal corresponding to the touch position.

  The screen data 2a and the control program 2b transferred from the host computer 2 are stored in the storage unit 34. Further, the storage unit 34 stores a USB input processing program 3a.

  The I / F unit 35 is a communication control unit for the programmable display 3 to communicate with the host computer 2 and other programmable displays 3, and is connected to the network 5. On the other hand, the I / F unit 36 is a communication control unit for the programmable display 3 to perform serial communication with the PLC 4, and performs communication using a communication protocol according to the manufacturer and model of the PLC 4.

  The USB / I / F unit 37 is a communication control unit for the programmable display 3 to communicate with a USB device connected to the USB terminal 38. In the present embodiment, the USB switch 7 is connected to the USB terminal 38. Note that not only the USB switch 7 but also any general-purpose USB device can be connected to the USB terminal 38.

  The USB switch 7 includes a USB input unit 71, a USB interface (USB • I / F) unit 72, and a USB storage unit 73. The USB input unit 71 has a function of generating a signal by a user input operation. The USB / I / F unit 72 is a communication control unit for the USB switch 7 to communicate with a connection destination. In a state where the USB switch 7 is connected to the USB terminal 38 of the programmable display 3, the signal generated by the USB input unit 71 is input to the programmable display 3 via the USB / I / F unit 72. The USB storage unit 73 is configured by a nonvolatile memory.

  FIG. 3 is a side view showing the external appearance of the USB switch 7. The USB switch 7 has a switch part 7a, a terminal part 7b, and a cable 7c. When the user presses the switch unit 7a, the USB input unit 71 shown in FIG. 1 generates a signal. The terminal part 7b is connected to the USB terminal 38 of the programmable display 3 shown in FIG.

  When performing a two-point pressing operation, the user touches the touch panel 33 while pressing the switch unit 7a, and thus the cable 7c is not essential. For example, when the USB terminal 38 is on the front frame of the programmable display 3, the cable 7c may be omitted. When the USB terminal 38 is not on the front frame of the programmable display 3, for example, when the USB terminal 38 is provided on the back of the programmable display 3, the user touches the touch panel 33 while pressing the switch unit 7a. Since it is difficult to do, it is desirable that the cable 7c be provided.

  In FIG. 1, the HMI processing unit 31 of the programmable display 3 includes a display / control unit 311 and an input operation signal processing unit 312. The display / control unit 311 is a functional block realized by activating the screen data 2 a and the control program 2 b stored in the storage unit 34, and the display 32 is based on the operation signal from the input operation signal processing unit 312. An operation screen is displayed, and a control signal for controlling the device 6 is output to the PLC 4.

  The input operation signal processing unit 312 is a functional block that generates an operation signal to be output to the display / control unit 311 based on a touch input by the user on the touch panel 33 and an input signal from the USB switch 7, and the USB input processing unit 313. And a touch input processing unit 314.

  As described above, when a touch input is made on the touch panel 33, the touch panel 33 generates a signal corresponding to the touch input position, and the touch input processing unit 314 receives the signal. The touch input processing unit 314 outputs the signal to the display / control unit 311.

  The USB input processing unit 313 is a functional block realized by starting the USB input processing program 3a stored in the storage unit 34. The USB input processing program 3a corresponds to the program described in the claims. . When the user performs an input operation by pressing the switch unit 7 a of the USB switch 7, the USB input processing unit 313 is the same as the touch input to a predetermined position on the touch panel 33. Accept as input operation. More specifically, the USB input processing unit 313 receives the input signal from the USB switch 7 as a digital signal that the touch input processing unit 314 outputs to the display / control unit 311 when a predetermined position on the touch panel 33 is touch-input. Convert to the same digital signal. Thereby, the user can perform the same operation input as the case where the predetermined position of the touch panel 33 is touch-input by pressing down the switch part 7a.

  Here, when performing a two-point pressing operation, the user touches and inputs a position other than the predetermined position on the touch panel 33 while pressing the switch unit 7a. At this time, since only one point is actually touch-inputted on the touch panel 33, the touch-input position is detected on the touch panel 33, and a detection signal is output to the touch input processing unit 314. The processing unit 314 converts the signal into a signal corresponding to the touch input position. Thereby, in the input operation signal processing unit 312, when the touch input processing unit 314 generates a signal corresponding to the actual touch input position, and the USB input processing unit 313 performs touch input at a predetermined position on the touch panel 33. The touch input processing unit 314 generates the same signal as the signal output to the display / control unit 311. These two signals are input to the display / control unit 311. The display / control unit 311 performs display and / or control operations corresponding to the two-point press operation.

  Thus, by substituting the touch input to the predetermined position of the touch panel 33 for the input operation by the USB switch 7, the touch panel 33 is a digital touch panel, and one matrix switch related to the two-point press breaks down. Even if it is an analog touch panel, a pseudo two-point pressing operation can be performed.

  The predetermined position is preset for each screen by the USB input setting unit 221 when the screen data 2a and the control program 2b are created and edited in the host computer 2 shown in FIG. Hereinafter, the setting method will be described.

  FIG. 4 shows a system setting screen of the host computer 2. On the system setting screen, whether to permit the use of the USB switch as an input device connected to the programmable display 3 is set. Here, the use of the USB switch 7 is permitted in the programmable display 3 by checking the “Use USB switch” check box.

  Subsequently, the position on the touch panel 33 corresponding to the input by the USB switch 7 is set for each screen displayed on the programmable display 3. For example, on the keyboard screen as shown in FIG. 5, the input by the USB switch 7 is set to be the same operation input as the touch input at the position corresponding to the shift key on the screen.

  1 is written in the screen data 2a and the control program 2b, and the screen data 2a and the control program 2b are installed in the programmable display 3, so that the USB input processing unit 313 shown in FIG. It is possible to accept the same input operation as a touch input to a predetermined position set on the touch panel 33.

  As described above, the USB input processing unit 313 is a functional block realized by causing the arithmetic processing unit such as a CPU provided in the programmable display 3 to execute the USB input processing program 3a stored in the storage unit 34. . The USB input processing program 3 a can be recorded on a recording medium configured to be separable from the programmable display 3, and may be installed in the programmable display 3 from the recording medium. The above recording media include tape systems such as magnetic tapes and cassette tapes, magnetic disk systems such as flexible disks and hard disks, optical disk systems such as CD-ROM, MO, MD, and DVD, IC cards (including memory cards), optical A card system such as a card is preferred. In addition, the program medium may be a medium that carries a fixed program including a semiconductor memory such as a mask ROM, EPROM, EEPROM, flash ROM, or the like.

  Further, if the control system 1 according to the present embodiment is configured to be connectable to a communication network including the Internet, the USB input processing program 3a may be downloaded from the communication network. However, when the USB input processing program 3a is downloaded from the communication network in this way, the download program may be stored in the programmable display 3 in advance or installed from another recording medium. Good.

  Further, the USB input processing program 3a is stored in the memory built in the USB switch 7, and when the USB switch 7 is connected to the programmable display 3, the USB input processing program 3a is transferred from the USB switch 7 to the programmable display. 3 may be configured to be installed. This configuration is shown in FIG.

  FIG. 6 is a block diagram illustrating a configuration of the programmable display 3 and the USB switch 7 according to a modification of the present embodiment. The USB storage unit 73 of the USB switch 7 stores a USB input processing program 3a. Thus, when the USB switch 7 is connected to the programmable display 3, the USB input processing program 3 a is transferred from the USB storage unit 73 to the storage unit 34 of the programmable display 3 and automatically installed in the programmable display 3. Is done.

  FIG. 7 is a flowchart showing an input operation by the USB switch 7. The USB switch 7 is connected to the USB terminal 38 of the programmable display 3 (step S40), and the USB input processing program 3a is already installed in the programmable display 3 as shown in FIG. 1 (“Yes” in step S41). When the setting for permitting the use of the function of the USB switch 7 is performed in the system setting shown in FIG. 4 (“Yes” in step S45), the USB input processing program 3a is started (step S46), and the programmable display 3 is displayed. A USB input processing unit 313 is formed.

  When the host computer 2 creates / edits the screen data 2a and the control program 2b, if the input from the USB switch 7 is associated as the input at a predetermined position on the touch panel 33 (“Yes” in step S47), the USB switch 7 When there is an input (“Yes” in step S48), the USB input processing unit 313 of the programmable display 3 accepts an input from the USB switch 7 as an input at a predetermined position on the touch panel 33 (step S49). When input, the same signal as the digital signal generated by the touch input processing unit 314 is generated.

  Subsequently, when the user touches a position different from the predetermined position on the touch panel 33 while maintaining the input of the USB switch 7 (step S50), the touch input processing unit 314 generates a digital signal corresponding to the touch input. To do. Accordingly, digital signals are input to the display / control unit 311 from the USB input processing unit 313 and the touch input processing unit 314, respectively, and the display / control unit 311 executes a process corresponding to the two-point press operation (step). S51).

  The above flow is a flow when the USB input processing program 3a is already installed in the programmable display 3 in step S41. On the other hand, when the USB switch 7 is connected to the USB terminal 38 and the USB input processing program 3a is not yet installed in the programmable display 3 (“No” in step S41), the USB input processing unit 313 Since it does not function, the input operation by the USB switch 7 cannot be performed. Here, as shown in FIG. 6, the USB input processing program 3a is stored in the USB switch 7 (“Yes” in step S42), and installation of the USB input processing program 3a to the programmable display 3 is permitted. If it is present (“Yes” in step S43), the USB input processing program 3a is installed in the programmable display 3 (step S44), and the process proceeds to step S45.

  Subsequently, an input operation by the USB switch 7 will be described based on an operation screen displayed on the display 32 of the programmable display 3. Here, a case where the device C, which is a control target device of the control system 1, is stopped for maintenance will be described. Since the device C normally has to be continuously operated, in order to stop the device C, a two-point pressing operation on the touch panel 33 is required.

  FIG. 8 is a diagram showing a monitor screen 100 that shows the operation status of the device C that is the control target device. Here, when the maintenance of the device C is performed, when the user touches the maintenance button 101, the screen is switched to the user authentication screen 200 as illustrated in FIG.

  On the user authentication screen 200, a keyboard screen 201 is displayed together with input fields for inputting a user ID and password. Here, on the user authentication screen 200, when the user performs an input operation on the USB switch 7 connected to the programmable display 3, the USB input processing unit 313 of the programmable display 3 shown in FIG. The keyboard screen 201 is set to accept the same input operation as the touch input to the position corresponding to the shift key 202.

  -+-Thus, when inputting capital letters in the input fields for ID and password, the user may touch and input a desired alphabetic key on the keyboard screen 201 while pressing the switch section 7a of the USB switch 7. Therefore, capital letters can be easily input.

  It is desirable that the shift key 202 is displayed in a different manner from the other keys so that the user can recognize that the input by the USB switch 7 corresponds to the touch input to the shift key 202. For example, the shift key 202 may be displayed in a different color from other keys.

  When the authentication on the user authentication screen 200 is completed, a stop operation screen 300 for stopping the device C is displayed as shown in FIG. The stop operation screen 300 is provided with buttons 301 and 302 in the lower left corner and the upper right corner, respectively, and the device C can be stopped by selecting the buttons 301 and 302 at the same time.

  Here, on the stop operation screen 300, when the user performs an input operation on the USB switch 7 connected to the programmable display 3, the USB input processing unit 313 of the programmable display 3 shown in FIG. It is set so as to be accepted as the same input operation as the touch input to the position corresponding to the button 301. Thus, the user can stop the device C by touch-inputting the button 302 while pressing the switch unit 7a of the USB switch 7.

  In the above example, when the user touches the maintenance button 101 shown in FIG. 8, the user authentication screen 200 shown in FIG. 9 is switched, but the maintenance button 101 is not installed on the monitor screen 100. Alternatively, a configuration such as the stop operation screen 300 and the buttons 301 and 302 as shown in FIG. 10 may be used, and the screen may be switched from the monitor screen 100 to the user authentication screen 200 by simultaneously selecting the buttons 301 and 302.

  Further, in the keyboard screen 201 displayed on the user authentication screen 200 shown in FIG. 9, the input by the USB switch 7 may be associated with the touch input to the control key or the alto key. Thereby, a shortcut operation that requires a two-point pressing operation can be easily performed by the USB switch 7.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  The present invention can be applied not only to a programmable display but also to a display device with a touch panel such as a panel computer, an ATM of a financial institution, a ticket machine for a railway ticket, a portable terminal device such as a PDA or UMPC, and a car navigation system.

1, showing an embodiment of the present invention, is a block diagram illustrating configurations of a programmable display and a USB switch. FIG. It is a block diagram which shows schematic structure of a control system provided with the said programmable display. It is a side view which shows the external appearance of the said USB switch. It is a figure which shows the system setting screen of the host computer which the said control system has. It is a figure which shows a keyboard screen. The modification of embodiment of this invention is shown and it is a block diagram which shows the structure of a programmable display and a USB switch. It is a flowchart which shows input operation by the said USB switch. It is a figure which shows the monitor screen which shows the operating condition of a control object apparatus. It is a figure which shows a user authentication screen. It is a figure which shows a stop operation screen.

Explanation of symbols

3 Programmable display (display device with touch panel)
3a USB input processing program (program)
4 PLC (Controlled equipment)
7 USB switch (USB switch device)
33 Touch Panel 38 USB Terminal 74 USB Storage Unit (Storage Unit)
201 Keyboard screen 202 Shift key 313 USB input processing unit (USB input processing means)

Claims (7)

A display device with a touch panel having a USB terminal connected to a USB switch device,
A display device with a touch panel, comprising USB input processing means for receiving an input signal from the USB switch device as an input operation identical to a touch input signal to a predetermined position on the touch panel. The USB input processing means includes:
When two signals of an input signal from the USB switch device and a touch input signal to a position on the touch panel other than the predetermined position are received in an overlapping manner,
The same processing as when two signals of a touch input signal to a predetermined position on the touch panel and a touch input signal to a position on the touch panel other than the predetermined position are received in an overlapping manner is performed. A display device with a touch panel according to 1.   The display device with a touch panel according to claim 1, wherein the touch panel is a digital touch panel.   The display device with a touch panel according to claim 1, wherein the touch panel is an analog touch panel.   A program for causing a computer to operate as the USB input processing means according to claim 1.   A computer-readable recording medium on which the program according to claim 5 is recorded.   A USB switch device comprising storage means for storing the program according to claim 5.

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