TW202102977A - Touch control display device and control method thereof - Google Patents

Abstract

A touch control display device comprises a display, a touch control unit, a display processing unit, and a selector. The touch control unit coupled to the display detects a touch event on a screen of the touch control display device when the screen is touched, and provides one or more touch coordinates corresponding to the touch event. The display processing unit coupled to the display determines an operation mode in accordance with a control signal. The selector coupled to the touch control unit and the display processing unit receives the one or more touch coordinates, and outputs the one or more touch coordinates to the display processing unit or an external host computer selectively in accordance with the control signal.

Description

Touch display device and control method thereof

The present invention relates to a display device, in particular to a touch display device and a control method thereof.

In a general conference presentation, in order for the audience to understand the content of the presentation more clearly, the speaker will use a laser pen or open a presentation assistant program to clearly indicate the paragraph or object he is telling in the presentation. The presentation assistant program provides functions like an electronic whiteboard, allowing the speaker to directly mark the original presentation screen through various input devices (such as keyboard, mouse, touch) of the host computer to inform the audience Highlights of the briefing.

Although the presentation assistant program can assist in completing the functions of the electronic whiteboard, the presentation assistant program needs to be installed in advance, and the processor resources and storage resources of the host computer will be occupied when the presentation assistant program is executed.

According to an embodiment of the present invention, a touch display device, which is coupled to a host computer, includes a display screen, a touch unit, a display processing unit, and a selector. The touch unit is coupled to the display screen to detect a touch event when the display screen is touched, and provide one or more touch coordinates corresponding to the touch event. The display processing unit is coupled to the display screen, and determines an operation mode according to a control signal. The selector is coupled to the touch unit and the display processing unit for receiving the touch coordinates from the doctor, and selectively outputting the touch coordinates to the display processing unit or externally according to the control signal Of a host computer. In a first mode, through the switch output of the selector, the display processing unit receives and processes the one or more touch coordinates, and displays the punctuation or markings corresponding to the one or more touch coordinates on the display screen .

The touch display device described above, wherein, in the first mode, the display processing unit executes a pen function of a screen display function to display punctuation or marks corresponding to one or more touch coordinates on the display screen line.

The touch display device described above, wherein, in the first mode, the display processing unit executes a screen setting function of the screen display function to set the screen on the display screen to a single color, and execute the screen display function A pen color setting function of the pen to set the pen color of the pen function.

The touch display device described above, wherein, in the first mode, the display processing unit processes an image signal from an image signal source to display it on the display screen.

The touch display device described above, wherein, in a second mode, through the switch output of the selector, the host computer receives and processes the one or more touch coordinates, and the display processing unit processes the data from the host computer The image signal is displayed on the display screen.

The touch display device described above further includes a button coupled to the display processing unit and the selector for generating the control signal.

The touch display device described above, wherein the button is a physical button arranged on a housing of the touch display device, or is a virtual button and an icon displayed on the display screen.

The touch display device as described above, wherein the selector includes an input terminal, a first output terminal, a second output terminal, and a control terminal; the input terminal is coupled to the touch unit; the first output terminal is coupled The display processing unit is connected; the second output terminal is coupled to the host computer; and the control terminal is coupled to the button for receiving the control signal.

According to a method for controlling a touch display device according to an embodiment of the present invention, the steps include: detecting a touch event when a display screen of the touch display device is touched, and providing a touch event corresponding to the touch event Multiple touch coordinates; and determine the operation mode according to a control signal. Wherein, in a first mode, a display processing unit built in the touch display device processes the one or more touch coordinates, so as to display the punctuation or mark corresponding to the one or more touch coordinates on the display screen. line.

The control method of the touch display device as described above, wherein, in the first mode, the display processing unit executes a pen function of a screen display function to display on the display screen corresponding to one or more touch coordinates Punctuation or marking.

The control method of the touch display device described above, wherein, in the first mode, the display processing unit executes a screen setting function of the screen display function to set the screen on the display screen to a single color, and execute the A pen color setting function of the screen display function to set the pen color of the pen function.

As in the control method of the touch display device described above, in the first mode, the display processing unit processes an image signal from an image signal source to display it on the display screen.

As in the control method of the touch display device described above, wherein, in a second mode, the one or more touch coordinates are output to an external host computer, and the one or more touch coordinates are received and processed by the host computer, And the display processing unit processes the image signal from the host computer to display it on the display screen.

As in the control method of the touch display device described above, wherein the control signal is generated by a button, and the button is a physical button arranged on a housing of the touch display device, or a virtual button which is generated by the button. An icon displayed on the display.

FIG. 1 is a block diagram of a touch display device 100 according to an embodiment of the present invention. As shown in Figure 1, the touch display device 100 includes a touch unit 102, a display processing unit 104, a selector 106, a display screen 108, and a button 110, wherein the display screen 108 is integrated with a touch panel (Not shown in the figure), the touch panel may adopt the technology of an external touch panel or an in-cell touch panel, for example. In addition, the touch display device 100 can be connected to a host computer 112.

The touch unit 102 of this embodiment is coupled to the display screen 108, more specifically to the touch panel in the display screen 108, to detect a touch event when the touch display screen 108 is touched, and provide One or more touch coordinates corresponding to the touch event. For example, when a user touches any position on the display screen 108 with a finger, the touch unit 102 detects the touch event, and calculates a touch coordinate (such as coordinate (x, y)). If the user touches (or continuously touches) two (or more) positions on the display 108 at the same time, the touch unit 102 also calculates two (or more) positions based on the two (or more) touch positions. Multiple) corresponding touch coordinates (for example, coordinates (x ₁ ,y ₁ )~(x _n ,y _n ), n≧2).

The display processing unit 104 of this embodiment may be a microcontroller (microcontroller unit: MCU) built into the touch display device 100, coupled to the display screen 108, used to control the display screen of the display screen 108, and can execute a screen Display (on screen display: OSD) function. The display processing unit 104 of this embodiment performs a screen display function, and besides providing a general user with functions to adjust parameters such as brightness and contrast of the display screen 108, it further provides a pen function.

The display processing unit 104 determines the operation mode according to a control signal Ctrl, for example, it can be switched to the on-screen display mode (OSD) or the normal mode. On the other hand, the selector 106 selectively outputs the touch coordinates received from the touch unit 102 to the display processing unit 104 or the host computer 112 according to the control signal Ctrl. In this embodiment, in the display mode corresponding to the screen When the time, the selector 106 switches to output the touch coordinates to the display processing unit 104; and when corresponding to the normal mode, the selector 106 switches to output the touch coordinates to the computer host 112.

In actual operation, in the screen display mode, the touch display device 100 receives and processes the touch coordinates by the display processing unit 104 through the switch of the selector 106. At this time, the display processing unit 104 in addition to processing the image signal from the image signal source (such as the host computer 112, the TV signal provider, the multimedia player, etc.) to display on the display screen 108, or presents a picture with no signal on the display screen 108 In addition, a screen display function is also implemented to provide a pen function for displaying punctuation or markings corresponding to the touch coordinates on the display screen 108 according to the touch coordinates. In other words, at this time, regardless of whether the display screen 108 is displaying any image signal screen or presenting a non-signal screen, the display processing unit 104 can directly make a corresponding mark (such as a punctuation mark) on the position where the display screen 108 is touched. Or display in the form of markings). More specifically, if the user touches a finger on the display screen 108 with a single point, the display processing unit 104 will display the punctuation corresponding to the touch point of the user's finger on the display screen 108; If the user sticks his finger on the display screen 108 and slides continuously, the display processing unit 104 will display the marking line corresponding to the slide track touched by the user's finger on the display screen 108.

In addition, in the normal mode, the host computer 112 connected to the touch display device 100 receives and processes the touch coordinates through the switch of the selector 106. At this time, the user can select the image signal source received by the touch display device 100, but in general, the user will choose to let the display processing unit 104 receive and process the image signal from the host computer 112 to correspond to the display host computer The 112 real-time operation screen is on the display 108. In other words, in the normal mode, the touch display device 100 can be used as a touch input device and a display output screen of the host computer 112 at the same time, that is, the user can control and control by integrating the display screen 108 and the touch unit 102 of the touch panel. The host computer 112 is operated, and the real-time operation screen of the host computer 112 is also synchronously watched through the display screen 108. For example, suppose that the user touches an application software icon (icon) in the desktop screen of the operating system displayed on the display screen 108, and the touch unit 102 calculates where the user touches the position on the display screen 108. The corresponding touch coordinate (for example, the coordinate (x, y)) is output to the host computer 112 through the switch of the selector 106. The operating system of the host computer 112 processes the touch coordinates to correspond to the action of opening the application software. Further, assuming that the application software opened by the user is a presentation assistant software, at this time, the user can directly perform marking operations (such as marking lines) in the window screen displayed on the display screen 108, and the touch unit 102 calculates The multiple touch coordinates corresponding to the continuous touch positions of the user on the display 108 (for example, the coordinates (x ₁ , y ₁ ) ~ (x _n , y _n )) are displayed, and the selector 106 switches to output To the host computer 112, the presentation assistant software of the host computer 112 processes the touch coordinates to correspondingly execute the pen marking action.

In some embodiments, the selector 106 may be a one-to-two switch (or multiplexer), including an input terminal, a first output terminal, a second output terminal, and a control terminal. The input terminal is coupled to the contact control unit 102; the first output terminal is coupled to the display processing unit 104; the second output terminal is coupled to the host computer 112; and the control terminal is coupled to the button 110 for receiving the control signal Ctrl.

Regarding the button 110, the user can operate the button 110 to generate a control signal Ctrl to switch the operation mode of the touch display device 100. In some embodiments, the button 110 is a physical button provided on the casing of the touch display device 100, and the display processing unit 104 determines whether the button 110 is pressed to determine whether to switch to the screen display mode or the general mode, for example: When the button 110 is pressed, the display processing unit 104 enters the screen display mode; when the button 110 is not pressed, the display processing unit 104 enters the normal mode. In the actual circuit design, the button 110 can be designed to stably output a high level voltage to the display processing unit 104 and the selector 106 before being pressed, and when the button 110 is pressed, the button 110 is grounded, so the output is for a period of time ( The low level voltage corresponding to the pressing period) is provided to the display processing unit 104 and the selector 106. In this way, when the display processing unit 104 and the selector 106 receive the low-level voltage control signal Ctrl, the display processing unit 104 enters the screen display mode, and the selector 106 correspondingly selects and outputs the touch coordinates to the display processing unit 104. When the display processing unit 104 and the selector 106 receive the high-level voltage control signal Ctrl, the display processing unit 104 enters the normal mode, and the selector 106 correspondingly selects and outputs the touch coordinates to the computer host 112.

In some embodiments, the button 110 may be a virtual button designed by programming, and specifically may be designed as an icon displayed on the display screen 108 of the touch display device 100. For example, the button 110 is an icon displayed in the corner, edge or floating area of the screen of the display screen 108, so that the user can directly operate the button 110 by touching the icon.

In some embodiments, when the display processing unit 104 enters the screen display mode, the screen display function executed by the display processing unit 104 can further provide a screen setting function, allowing the user to select the current screen on the display 108 to display the original image ( Such as displaying the image signal from the image signal source or presenting a picture with no signal) or directly set the picture to a single color for selection. In addition, the screen display function performed by the display processing unit 104 can further provide a pen color setting function, allowing the user to manually set the pen color of the pen function provided by the display processing unit 104, or automatically set it to be the same as the one on the display 108 The color of a single color is the contrast color of the color screen, or any color that can be clearly distinguished by the user. In this way, the touch display device can greatly improve the flexibility, convenience and applicability when used as an electronic whiteboard.

FIG. 2 is a schematic diagram of the operation of the touch display device according to the embodiment of the present invention. Assume that the user has a need to mark the original screen displayed on the display screen 108, where the screen of the display screen 108 displays, for example, an image signal from the host computer 112, as shown in Figure 2 as a paragraph of text or a pattern. In the case that the touch display device 100 is connected with the host computer 112 externally, there are two operation modes mentioned above, namely, the operation enters the screen display mode and the normal mode.

First, the user can press the button 110 to make the display processing unit 104 enter the screen display mode. At this time, the display processing unit 104 will perform a screen display function to provide a pen function. In this way, when the user touches a finger to slide over the position to be marked, the display processing unit 104 will process the touch generated by the touch. Touch the coordinates, and directly display the marks corresponding to the user's touch sliding track (for example, marks A, B, C, D, E in Figure 2) on the display screen 108, so as to realize the pen function for marking.

In another operation mode, the user may not press the button 110 to make the display processing unit 104 enter the normal mode. At this time, the user must first open the presentation assistant software or similar functional software in the host computer 112 to provide the pen function through the presentation assistant software. In this way, when the user touches the finger to slide over the location to be marked , The presentation assistant software of the host computer 112 will process the touch coordinates generated by the touch and generate a marking effect. Since the host computer 112 uses the touch display device 100 as a display output device, the display 108 is The image signal containing the marking effect from the host computer 112 (for example, the markings A, B, C, D, and E in Figure 2) is synchronously displayed.

FIG. 3 is another schematic diagram of the operation of the touch display device according to the embodiment of the present invention. In some cases, suppose that when the user shuts down the host computer 112 or disconnects from the touch display device 100, the touch display device 100 does not receive the image signal from the host computer 112 and displays nothing on the display 108. The image of the signal is generally displayed in a black or blue image on the design of the display. The touch display device 100 of the present disclosure can fully adapt to this situation. The user can press the button 110 to make the display processing unit 104 enter the screen display mode. At this time, the display processing unit 104 will perform the screen display function to provide the pen function. Before that, the user can also operate the screen setting function in the screen display function to first select the original image to be displayed (the original image at this time). The image is a picture with no signal) or to set the picture to a single color to choose from, suppose the user chooses to set the picture on the display 108 to a single color (such as white), and the user also further operates the screen display function The pen color setting function in, sets the pen color to automatically contrast with the color of the screen on the display screen 108 (such as black). In this way, the touch display device 100 can be operated by the user as an electronic whiteboard, and the mark corresponding to the user's touch track (for example, mark F in Fig. 3) is directly displayed on the display screen 108. Realize writing, drawing and other operations.

FIG. 4 is a flowchart of a control method of a touch display device according to an embodiment of the present invention. In this embodiment, for example, the touch display device 100 in the embodiment in FIG. 1 is used to describe the following control method. As shown in FIG. 4, the control method of the touch display device includes: first, detecting a touch event when the display screen 108 of the touch display device 100 is touched, and providing one or more touch events corresponding to the touch event. Touch coordinates (S200). In this embodiment, the touch display device 100 uses the touch unit 102 to detect a touch event when the display screen 108 integrated with the touch panel is touched.

Then, the operation mode is determined according to a control signal Ctrl (S202). The control signal Ctrl of this embodiment is generated by, for example, a button 110, and the user can determine the operation mode of the touch display device 100 by operating the button 110. When the touch display device 100 enters a screen display mode, the built-in display processing unit 104 of the touch display device 100 processes the touch coordinates (S204), so as to display punctuation or markings corresponding to the touch coordinates on the display 108 . At this time, the display processing unit 104 can also synchronously process the image signal from an image signal source to display it on the display screen 108, or display a picture with no signal on the display screen 108.

When the touch display device 100 enters a normal mode, the touch coordinates are output to a host computer 112 externally connected to the touch display device 100, so that the host computer 112 receives and processes the touch coordinates (S206). The display processing at this time The unit 104 can also synchronously process the image signal from the host computer 112 for display on the display screen 108.

The touch display device 100 and the control method of the touch display device 100 of the embodiment of the present invention can replace the functions of the electronic whiteboard and the traditional whiteboard currently on the market, and provide different operation modes for users to flexibly apply In life and work. With the screen display mode provided by the touch display device 100, the user can use the touch screen in any screen (such as a screen displaying an image signal from an image signal source, a non-signal screen, or directly setting the screen to a single color). Direct operation on the display screen 108 of the display device 100 for marking can reduce the dependence on the performance of the external host computer.

Although the embodiments of the present invention are as described above, we should understand that what is presented above is only an example, not a limitation. According to this embodiment, many changes of the above exemplary embodiment can be implemented without violating the spirit and scope of the invention. Therefore, the breadth and scope of the present invention should not be limited by the embodiments described above. More precisely, the scope of the present invention should be defined by the following patented scope and its equivalents.

100: Touch display device 102: Touch unit 104: display processing unit 106: selector 108: Display 110: Button 112: host computer A, B, C, D, E, F: mark Ctrl: control signal S200~S206: Flow chart step description

Figure 1 is a block diagram of a touch display device according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the operation of the touch display device according to the embodiment of the present invention; FIG. 3 is another schematic diagram of the operation of the touch display device according to the embodiment of the present invention; FIG. 4 is a flowchart of a control method of a touch display device according to an embodiment of the present invention.

100: Touch display device

102: Touch unit

104: display processing unit

106: selector

108: Display

110: Button

112: host computer

Ctrl: control signal

Claims (14)

A touch display device includes: A display A touch unit, coupled to the display screen, for detecting a touch event when the display screen is touched, and providing one or more touch coordinates corresponding to the touch event; A display processing unit, coupled to the display screen, and determining the operation mode according to a control signal; and A selector, coupled to the touch unit and the display processing unit, for receiving the one or more touch coordinates, and selectively outputting the one or more touch coordinates to the display for processing according to the control signal Unit or an external host computer; Wherein, in a first mode, through the switch output of the selector, the display processing unit receives and processes the one or more touch coordinates, and displays the punctuation corresponding to the one or more touch coordinates on the display screen or Marking. The touch display device according to claim 1, wherein, in the first mode, the display processing unit executes a brush function of a screen display function to display one or more corresponding ones on the display screen Touch the punctuation or marking of the coordinate. The touch display device according to claim 2, wherein, in the first mode, the display processing unit executes a screen setting function of the screen display function to set the screen on the display screen to a single color , And execute a pen color setting function of the screen display function to set the pen color of the pen function. According to the touch display device described in claim 1, wherein, in the first mode, the display processing unit processes an image signal from an image signal source to display it on the display screen. According to the touch display device described in claim 1, wherein, in a second mode, through the switch output of the selector, the host computer receives and processes the one or more touch coordinates, and the display processes The unit processes the image signal from the host computer and displays it on the display screen. For example, the touch display device described in claim 1 further includes a button coupled to the display processing unit and the selector for generating the control signal. The touch display device according to item 6 of the scope of patent application, wherein the button is a physical button arranged on a casing of the touch display device, or a virtual button displayed on the display screen One icon. The touch display device according to claim 6, wherein the selector includes an input terminal, a first output terminal, a second output terminal, and a control terminal; the input terminal is coupled to the touch unit The first output terminal is coupled to the display processing unit; the second output terminal is coupled to the host computer; and the control terminal is coupled to the button for receiving the control signal. A method for controlling a touch display device, the steps include: Detecting a touch event when a display screen of the touch display device is touched, and providing one or more touch coordinates corresponding to the touch event; and Determine the operation mode based on a control signal; Wherein, in a first mode, a display processing unit built in the touch display device processes the one or more touch coordinates, so as to display the punctuation or mark corresponding to the one or more touch coordinates on the display screen. line. According to the control method of the touch display device described in the scope of patent application, wherein, in the first mode, the display processing unit executes a pen function of a screen display function to display the corresponding function on the display screen One or more punctuation points or markings that touch the coordinates. According to the control method of the touch display device described in the scope of patent application, wherein, in the first mode, the display processing unit executes a screen setting function of the screen display function to set the screen on the display screen It is a single color, and executes a pen color setting function of the screen display function to set the pen color of the pen function. According to the control method of the touch display device described in claim 9, wherein, in the first mode, the display processing unit processes an image signal from an image signal source to display it on the display screen. According to the control method of the touch display device described in claim 9, wherein, in a second mode, the one or more touch coordinates are output to an external host computer, and the host computer receives and processes the One or more touch coordinates, and the display processing unit processes the image signal from the host computer to display on the display screen. The control method of the touch display device according to claim 9 of the scope of patent application, wherein the control signal is generated by a button, and the button is a physical button arranged on a housing of the touch display device, or An icon displayed on the display screen for a virtual key.

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