TWM565828U - Touch display with auto-adjusting sampling frequency - Google Patents

Abstract

A touch display with auto-adjusting sampling frequency is provided. The touch display includes a display panel, a touch panel and a processor. The display panel displays a frame according to a first sampling frequency or a second sampling frequency. The second sampling frequency is higher than the first sampling frequency. The touch panel disposed on the display panel is used for sensing a touching trace. The processor is used for determining whether a first predetermined condition is satisfied according to the touching trace and determining whether a second predetermined condition is satisfied according to the frame. If the first predetermined condition is satisfied and the second predetermined condition is satisfied, then the processor controls the display panel to display the frame according to the second sampling frequency.

Description

Touch display device for automatically adjusting sampling frequency

The present invention relates to a touch display device, and more particularly to a touch display device that automatically adjusts a sampling frequency.

With the development of technology, various display devices continue to evolve. Among them, the touch display device is an important milestone in the development of technology. The touch display device can provide an intuitive operation for the user to draw, write or operate an interactive game.

The faster the sampling frequency of the touch display device, the more content that can be processed per unit time; however, it may also cause power consumption. Today's touch display devices are widely used, and users can perform word processing, watch movies, or enter action games. The sampling frequencies that are suitable for different operations are different. If the fixed sampling frequency is fixed, the picture quality may be degraded; if the higher sampling frequency is fixed, the power consumption may be too high. So how to develop a kind Touch display devices capable of automatically adjusting the sampling frequency have become one of the researcher's efforts.

The present invention relates to a touch display device for automatically adjusting a sampling frequency, which determines whether the display panel is at the first sampling frequency or the second according to whether the touch track satisfies the first predetermined condition and whether the picture satisfies the second predetermined condition. The sampling frequency is used to display the picture, so that the touch display device can provide better picture quality in an application scenario where the dynamic change is large, and effectively save power in an application scenario with less dynamic change.

According to one aspect of the present invention, a touch display device for automatically adjusting a sampling frequency is proposed. The touch display device for automatically adjusting the sampling frequency includes a display panel, a touch panel and a processor. The display panel displays a picture at a first sampling frequency or a second sampling frequency. The second sampling frequency is higher than the first sampling frequency. The touch panel is disposed on the display panel for detecting a touch track. The processor is configured to determine whether the touch track meets a first predetermined condition, and is used to determine whether the picture meets a second predetermined condition. If the touch track satisfies a first predetermined condition and the picture satisfies the second predetermined condition, the processor controls the display panel to display the picture at the second sampling frequency.

In order to better understand the above and other aspects of the present invention, the following specific embodiments are described in detail below with reference to the accompanying drawings:

100‧‧‧Touch display device

110‧‧‧ display panel

120‧‧‧Touch panel

130‧‧‧Processor

FM‧‧‧ screen

OB‧‧‧ objects

S1‧‧‧ first sampling frequency

S2‧‧‧ first sampling frequency

S110, S120, S130, S140‧‧ steps

T1, T2, T3‧‧‧ touch track

FIG. 1 is a schematic diagram of a touch display device according to an embodiment.

FIG. 2 is a flow chart of a method for automatically adjusting a sampling frequency of a touch display device according to an embodiment.

FIG. 3 is a schematic diagram of a touch action according to an embodiment.

FIG. 4 is a diagram showing a screen change of the touch action according to FIG. 3.

FIG. 5 is a schematic diagram of a touch action according to an embodiment.

FIG. 6 is a diagram showing a screen change of the touch action according to FIG. 5.

FIG. 7 is a schematic diagram of a touch action according to an embodiment.

FIG. 8 is a diagram showing a screen change of the touch action according to FIG. 7.

Please refer to FIG. 1 , which illustrates a schematic diagram of a touch display device 100 according to an embodiment. The touch display device 100 includes a display panel 110 , a touch panel 120 , and a processor 130 . The display panel 110 is configured to display a screen, such as a liquid crystal display panel, an organic light emitting diode panel, and an electronic paper. The touch panel 120 is configured to sense a touch signal, such as a capacitive touch panel, a resistive touch panel, or an infrared sensing panel. The processor 130 is configured to perform various determination programs, processing programs, and calculation programs, such as a chip, a circuit board, a firmware circuit, or a storage device that stores array code.

The processor 130 is electrically connected to the display panel 110 to control the display panel 110. The display panel 110 can display a picture at a first sampling frequency S1 or a second sampling frequency S2. The first sampling frequency S1 is, for example, 50 Hz, 60 Hz, or 120 Hz, The second sampling frequency S2 is, for example, 240 Hz. The second sampling frequency S2 is higher than the first sampling frequency S1. When the display panel 110 displays the screen at the second sampling frequency S2, it can be adapted to a dynamic change environment, such as an action game, a virtual reality, or the like. When the display panel 110 displays the screen at the first sampling frequency S1, it can be adapted to a dynamically changing application scenario and can effectively save power, such as word processing, photo display, and the like.

The processor 130 is electrically connected to the touch panel 120 to obtain one touch track T1 sensed by the touch panel 120. The processor 130 can perform corresponding control on the screen FM according to the touch track T1, such as moving the picture FM, zooming in/out the picture FM, moving an object on the picture FM, and the like. The following is a more detailed flow chart to explain the operation of each component.

Please refer to FIG. 2 to FIG. 2 , FIG. 2 is a flowchart of a method for automatically adjusting a sampling frequency of the touch display device 100 according to an embodiment, and FIG. 3 is a schematic diagram of a touch action according to an embodiment. 4 is a diagram showing changes in the picture FM according to the touch action of FIG. 3. First, in step S110, the processor 130 controls the display panel 110 to display the screen FM at the first sampling frequency S1. The processor 130 takes the lower first sampling frequency S1 as an initial value to ensure the power saving capability of the touch display device 100.

Next, in step S120, the processor 130 determines whether the touch track T1 satisfies a first predetermined condition. The first predetermined condition is, for example, that the track length of one of the touch tracks T1 is greater than a predetermined length. The predetermined length is, for example, 50 pixels. The selection of the predetermined length can be set according to the resolution and size of the display panel 110. This step is mainly used to determine whether the user has a large degree of operation on the screen FM.

In an embodiment, the first predetermined condition may also be that one of the touch tracks T1 has a sliding speed greater than a predetermined speed. The predetermined speed is, for example, 10 pixels per millisecond. That is to say, the first predetermined condition may consider not only the degree of movement but also the time factor.

If the touch track T1 satisfies the first predetermined condition, the process proceeds to step S130; if the touch track T1 does not satisfy the first predetermined condition, then the process returns to step S110. As shown in FIG. 3, the processor 130 determines that the track length of the touch track T1 is greater than a predetermined length, and proceeds to step S130.

Then, in step S130, the processor 130 determines whether the picture FM satisfies a second predetermined condition. The second predetermined condition is, for example, that one of the picture FM update rates is greater than a predetermined ratio. The predetermined ratio is, for example, 30%. That is to say, this step is mainly used to determine whether the user's touch causes the picture FM to undergo a large degree of change.

If the screen FM satisfies the second predetermined condition, the process proceeds to step S140; if the screen FM does not satisfy the second predetermined condition, the process returns to step S110. As shown in FIG. 4, the processor 130 determines that the screen FM has moved 50% to the left, so that the screen update rate reaches 50%, and proceeds to step S140.

In step S140, the touch track T1 satisfies the first predetermined condition and the picture FM satisfies the second predetermined condition, and the processor 130 controls the display panel 110 to display the picture FM at the second sampling frequency S2. That is to say, in the application scenario where the dynamic change is large, the processor 130 controls the display panel 110 to adopt a higher second sampling frequency S2 to make the picture FM have better presentation.

Next, the flow returns to step S120 to judge the first predetermined condition and the second predetermined condition again. That is, the processor 130 can each It is determined again whether the touch track T1 satisfies the first predetermined condition every other predetermined time. As long as the touch track T1 satisfies the first predetermined condition, it is determined again whether the picture FM satisfies the second predetermined condition. In the case that the touch track T1 still satisfies the first predetermined condition and the picture FM still satisfies the second predetermined condition, the processor 130 continuously controls the display panel 110 to adopt a higher second sampling frequency S2, so that the picture FM is maintained at a higher level. Good presentation.

When the processor 130 determines that the touch track T1 does not satisfy the first predetermined condition (step S120), or the processor 130 determines that the picture FM does not satisfy the second predetermined condition (step S130), then returns to step S110. At this time, the processor 130 controls the display panel 110 to display the screen FM at the lower first sampling frequency S1 to save power.

For other reasons, please refer to the fifth to sixth figures. FIG. 5 is a schematic diagram of a touch action according to an embodiment, and FIG. 6 is a diagram showing a change of a picture FM according to the touch action of FIG. . As shown in FIG. 5, the processor 130 determines that the track length of a touch track T2 is greater than a predetermined length, and proceeds to step S130.

As shown in FIG. 6, the processor 130 determines that only the object OB moves to the left in the screen FM, and the screen update rate does not reach 30%, and returns to step S110. That is to say, in the case that the screen update rate is not high, even if the track length of the touch track T2 is greater than the predetermined length, the processor 130 controls the display panel 110 to display the picture FM at the lower first sampling frequency S1 to save power. .

Please refer to FIG. 7 to FIG. 8 , FIG. 7 is a schematic diagram of a touch action according to an embodiment, and FIG. 8 is a diagram showing a change of a picture FM according to the touch action of FIG. 7 . As shown in Fig. 7, the user simply clicks on the object OB without sliding the finger. At The processor 130 determines that the track length of the touch track T3 is less than the predetermined length, and returns to step S110. That is, in the case that the touch track T3 is not long, it is not necessary to determine whether the picture update rate of the picture FM is higher than a predetermined ratio, and the processor 130 directly controls the display panel 110 to display the picture FM at the lower first sampling frequency S1. To save power.

According to the above embodiment, the touch display device 100 that automatically adjusts the sampling frequency can determine the display panel 110 according to whether the touch trajectories T1, T2, and T3 satisfy the first predetermined condition and whether the screen FM satisfies the second predetermined condition. A sampling frequency or a second sampling frequency display screen FM enables the touch display device 100 to provide better picture quality in an application environment that can be dynamically changed, and saves in an application scenario with less dynamic changes. electric power.

In summary, although the present invention has been disclosed above by way of example, it is not intended to limit the present invention. Those of ordinary skill in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this new type is subject to the definition of the scope of the patent application.

Claims (12)

A touch display device for automatically adjusting a sampling frequency, comprising: a display panel displaying a picture at a first sampling frequency or a second sampling frequency, wherein the second sampling frequency is higher than the first sampling frequency; a panel disposed on the display panel for detecting a touch track; and a processor for determining whether the touch track meets a first predetermined condition and determining whether the picture meets a second predetermined Condition, if the touch track satisfies the first predetermined condition and the picture satisfies the second predetermined condition, the processor controls the display panel to display the picture at the second sampling frequency. The touch display device for automatically adjusting the sampling frequency according to the first aspect of the invention, wherein the first predetermined condition is that a track length of the touch track is greater than a predetermined length. A touch display device for automatically adjusting a sampling frequency as described in claim 2, wherein the predetermined length is 50 pixels. The touch display device for automatically adjusting the sampling frequency according to claim 1, wherein the first predetermined condition is that one of the touch tracks has a sliding speed greater than a predetermined speed. A touch display device for automatically adjusting a sampling frequency as described in claim 4, wherein the predetermined speed is 10 pixels/msec. The touch display device for automatically adjusting the sampling frequency according to claim 1, wherein the second predetermined condition is that the screen update rate of the screen is greater than a predetermined ratio. A touch display device for automatically adjusting a sampling frequency as described in claim 6 wherein the predetermined ratio is 30%. The touch display device for automatically adjusting the sampling frequency according to claim 1, wherein the first sampling frequency is 50 Hz, 60 Hz, or 120 Hz, and the second sampling frequency is 240 Hz. The touch display device of the automatic adjustment sampling frequency according to claim 1, wherein if the touch track does not satisfy the first predetermined condition, the processor controls the display panel to display the first sampling frequency Picture. The touch display device for automatically adjusting the sampling frequency according to claim 1, wherein if the screen does not satisfy the second predetermined condition, the processor controls the display panel to display the screen at the second sampling frequency. The touch display device for automatically adjusting the sampling frequency according to claim 1, wherein the processor re-determines whether the touch track satisfies the first predetermined condition every predetermined time. The touch display device for automatically adjusting the sampling frequency according to the first aspect of the invention, wherein the processor determines whether the screen satisfies the second reservation only if the touch track satisfies the first predetermined condition. condition.