JP2015125682A - Display device with touch panel input function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that, in a display device with a touch panel input function facilitating input by performing a touch operation, when an unexpected touch operation is performed, return to an original state becomes impossible; and the problem that addition of a function for inhibiting a setting operation by a touch operation to the display device with a simple mechanism is sometimes difficult.SOLUTION: A display device with a touch panel input function includes a state flag for discriminating between a screen operation inhibiting phase and a screen operation possible phase, a contact counter for recording the number of times of touch operations of a touch panel type display device in the screen operation inhibiting phase, and a timer-counter.

Description

The present invention relates to a small portable display device with a touch panel input function and a fixed installation type display device with a touch panel input function of a process control monitoring system.

A display device with a touch panel input function facilitates input by performing a touch operation while viewing a display screen. There is also a lightweight device. The display device with a touch panel input function of Document 1 has an advantage that it is convenient to carry.

JP 2009-80521 A

  In the display device with a touch panel input function disclosed in Literature 1, there is a problem in that when a touch operation that is not assumed when carrying is performed, it cannot be returned to the state before carrying. Further, when showing the display screen of the device to the worker, it may be difficult to add a function for prohibiting the setting operation by the touch operation to the display device with a simple mechanism. Like a portable display device with a touch panel input function, a touch panel input function is provided, but a fixed installation type process control monitoring system display device may not be able to easily add a function for prohibiting a setting operation.

A display device with a touch panel input function, comprising a state flag for distinguishing between a screen operation prohibition phase and a screen operation enable phase, and a contact counter for recording the number of touch operations of the touch panel display device in the screen operation prohibition phase And a timer / counter.

In a portable display device with a touch panel input function, an unintended setting due to an erroneous operation that moves while being displayed on the screen is not performed.
In addition, in a portable or installed display device with touch panel input function, touch operations cannot be performed while the display screen is visible, so if an operator who does not know the setting operation is shown the screen, erroneous operation by the worker is prevented. In addition, it is useful when cleaning the screen of the display device.

Block diagram of a display device with a touch panel input function according to the present invention Flowchart showing determination and processing for shifting to the screen operation prohibition phase according to the present invention. Flowchart showing determination and processing for shifting to the screen operable phase according to the present invention

Embodiment 1 of the present invention will be described in detail with reference to FIGS.

Embodiment 1 FIG.

FIG. 1 is a block diagram showing a configuration of a display device with a touch panel input function according to an embodiment of the present invention.

Reference numeral 4 denotes a display device composed of a liquid crystal panel. A pointing detection unit 1 that detects contact of an object with the surface of the display device 4 is placed. The object that contacts the surface of the pointing detection unit 1 may be any object that the pointing detection unit 1 detects, such as an operator's finger, stylus pen, metal rod, or glass rod.
The pointing detection unit 1 includes an electrostatic voltage sensing sheet as a detection function, and an electrode (not shown) for taking out a contact signal indicating the detected position on the sheet and the strength of contact. The contact signal is sent to the determination unit 2. Upon receiving the contact signal, the determination unit 2 processes a specified algorithm that determines whether the contact is due to malfunction or normal contact, and then transmits a specific signal indicating the determination result to the control unit 3. The control unit 3 executes a specific process and sends a control signal to the display device 4 to display a specific image that means a response of the display device with a touch panel input function to the contact. The display device 4 draws the specific image based on a regulation signal sent from the control unit 3. The specific image may be any graphic as long as it is a graphic recognized by an operator who operates the display device with a touch panel input function of the present invention.
The arrows in FIG. 1 represent signals or control directions flowing through the pointing detection unit 1, the determination unit 2, the control unit 3, and the display device 4.

The display device with a touch panel input function of the present invention has two phases, a screen operation enabling phase and a screen operation prohibiting phase. The difference between the two phases is distinguished by a difference in a specific code set in a status flag (not shown) placed on a recording device (not shown). The operation content at the time of contact in the screen operable phase is the same as that described in Document 1. When the screen operation enabling phase is switched to the screen operation prohibiting phase, the control unit 3 does not perform any processing for the contact with the pointing detection unit 1 except for the specific screen operation enabling phase operation.

  FIG. 2 shows a process of starting the presence / absence of contact within the display area of the prohibition operation icon (not shown) of the pointing detection unit 1 and shifting to the state of the screen operation prohibition phase executed by the control unit 3. It is a flowchart to explain. Determining that a contact has been made in the display area of the prohibited operation icon is defined as a screen operation prohibition confirmation. After the screen operation prohibition is confirmed, the state flag is rewritten from the first code indicating the screen operation enable phase to the second code indicating the screen operation prohibition phase. At the same time, the contact counter (not shown) is cleared.

FIG. 3 is a flowchart showing a flow of processing for canceling the screen operation prohibition phase and shifting to the screen operation enable phase in the screen operation prohibition phase.

Although several operations for switching from the screen operation prohibition phase to the screen operation enable phase are assumed, the present invention defines that the contact is made in 10 different regions. The reason why the number of contacts is 10 is that 10 fingers of both hands of the worker are assumed.

When the pointing detection unit 1 detects the first contact, a contact signal is sent to the determination unit 2. If the determination unit 2 determines the first contact, the determination unit 2 transmits a regulation signal to the control unit 3. The controller 3 starts a timer counter (not shown) and writes a numerical value 1 to the contact counter. Between the time when the timer / counter counts up to a specified value and the count-up is completed, it is determined whether there is a second to tenth contact on the screen or not, and necessary processing is executed. The processing content in the area surrounded by the broken line.

When the pointing detection unit 1 detects the second contact, a contact signal is sent to the determination unit 2. When the timer / counter is counting up and the determination unit 2 determines the second contact, the control unit 3 adds 1 to the contact counter.

The processes in the determination unit 2 and the control unit 3 relating to the detection of the third to tenth contacts in the pointing detection unit 1 are performed after the detection and determination of the second contact. Same as processing.

When a plurality of contacts occur at different positions on the screen within the time until the timer counter is counting up and the numerical value of the timer counter is incremented, the control unit 3 displays the contact counter. Add only the touched numbers.

When the timer counter completes counting up, if the value of the contact counter is 11 or more or 9 or less, the timer counter is stopped and the timer counter and the contact counter are cleared.

When the timer / counter completes counting up, if the numerical value of the contact counter coincides with 10, the control unit 3 determines that the signal is a transition signal to the screen operable phase. is there.
After determining that the screen operation is possible, the timer counter is stopped and the timer counter and the contact counter are cleared. Next, the process proceeds to a screen operable process. The previous-stage screen operation enabling process is a process of rewriting the state flag from the second code indicating the screen operation prohibiting phase to the first code indicating the screen operation enabling phase.

In the display device with a touch panel input function, immediately after the power is turned on or when a reset key (not shown) is pressed, the control 3 stops the timer counter, the timer counter, and the contact counter. , Clear. In addition, the first code is written in the status flag, and a specific image or drawing control signal indicating an initial screen is sent to the display device 4. The display device 4 renders the specific image.

The numerical value defined as the completion of the count-up by the timer / counter and the time width by which the count-up is incremented by one step may be specified in advance or may be input by an operator to an input device (not shown). .

In the present invention, in the transition to the screen operable phase, the touching numerical value is 10, but this numerical value may be any value. Further, the tap operation may be performed any number of times in the same region. In addition to touching, any shape on the screen may be traced.

DESCRIPTION OF SYMBOLS 1 Pointing detection part 2 Judgment part 3 Control part 4 Display device

Claims (8)

In a display device with a touch panel input function,
A display device with a touch panel input function, comprising: a pointing detection unit, a determination unit, a control unit, and a display device, and performing different processes in a screen operation prohibition phase and a screen operation enable phase. In claim 1,
The pointing detection unit transmits a contact signal to the determination unit when there is contact on the screen surface, and receives the contact signal. The determination unit determines whether the previous contact is a contact due to a malfunction or a normal contact. Then, a display device with a touch panel input function that transmits a prescribed signal to the control unit when it is determined that the contact is normal. In claim 1,
The control unit includes a state flag used to distinguish between the screen operation prohibition phase and the screen operation enable phase, a contact counter that records the number of screen touches of the touch panel display device, a timer counter, A display device with a touch panel input function. In claim 1,
The display device with a touch panel input function, wherein the screen operation enabling phase and the screen operation prohibiting phase are respectively defined by a first code and a second code set in the state flag. In claim 1,
The display device with a touch panel input function, wherein the contact counter records the number of screen touches of the touch panel display device in the screen operation prohibition phase. In claim 1,
A display device with a touch panel input function, wherein the state flag is changed to the second code by touching a specific area of the display screen to shift to the screen operation prohibition phase. In claim 1,
In the screen operation prohibition phase, when touching the screen, a specific process is not executed except for a specific operation that shifts to the screen operation enable phase. In claim 1,
In the screen operation prohibition phase, when the time counter completes counting up, if the number of contacts of the contact counter matches a specified value, the screen operation enable phase is changed by changing the status flag to a first code. A display device with a touch panel input function, wherein