TWI423082B - Touch screen apparatus and image display method - Google Patents

Description

Touch screen device and image display method thereof

The invention relates to a display device, in particular to a touch screen device capable of adjusting an image display ratio and an image display method thereof.

Nowadays, many portable video-type electronic products, such as mobile phones, PDAs, game consoles, etc., are equipped with touch screens, which bring a lot of convenience to the user's operation. Since the touch screen can replace many key operations, many buttons can be omitted, so that the touch screen can further enlarge the area of the display screen.

However, for the convenience of portability and cost considerations, portable electronic products are small in size, limited in screen area, and display a wide variety of contents, so that sometimes a lot of content on the touch screen is too small to be seen clearly. The button image used for touch operation is too small to operate, and sometimes because the display image ratio is too large, the user needs to view the screen by the up and down and left and right sliders, which is inconvenient to operate.

In view of this, it is necessary to provide a touch screen device that can adjust the aspect ratio of an image.

It is also necessary to provide an image display method of a touch screen device that can adjust the aspect ratio of an image.

A touch screen device includes: a video providing unit for providing a video image; The display unit is configured to display a video image. The touch screen device further includes: a touch sensing unit, configured to sense a touch action of the user and generate a corresponding touch signal; and an area analyzing unit configured to obtain a touch according to the touch signal The area processing unit is configured to adjust a display ratio of the image in the display unit according to a ratio of the touch area value to a preset area value.

An image display method of a touch screen device includes the following steps: displaying an image at a default ratio; receiving a proportional adjustment on-off signal input by a user, starting an image proportional adjustment function; detecting a touch area of the user on the touch screen; a ratio of the touch area to the preset area; adjusting the display ratio of the image according to the ratio.

With the touch screen device and the image display method thereof, the user can determine the zoom ratio of the image by controlling the touch area of the finger or other touch object on the touch sensing unit, so that the user can control the image as desired. The size of the image satisfies the needs of various scales.

10‧‧‧Touch screen device

112‧‧‧Video Processing Unit

102‧‧‧Video Providing Unit

114‧‧‧Adjustment button

104‧‧‧Display unit

122‧‧‧Storage Module

106‧‧‧Touch sensing unit

124‧‧‧Conversion module

108‧‧‧Location Analysis Unit

126‧‧‧Adjustment module

110‧‧‧ Area Analysis Unit

116‧‧‧ prompt input unit

S301~S319‧‧‧Image display method flow

FIG. 1 is a block diagram of a touch screen device according to a preferred embodiment.

2 is a flow chart of an image display method of a touch screen device according to a preferred embodiment.

Please refer to FIG. 1 , which is a block diagram of a touch screen device 10 according to a preferred embodiment. It includes a video providing unit 102, a display unit 104, a touch sensing unit 106, a position analyzing unit 108, an area analyzing unit 110, a video processing unit 112, and an adjustment button 114.

The video providing unit 102 is for providing a video image.

The display unit 104 is for displaying a video image provided by the video providing unit 102.

The touch sensing unit 106 is a sensing matrix composed of a plurality of sensing points distributed on the display unit 104 for sensing a user's touch motion and generating a corresponding touch signal.

The location analyzing unit 108 is configured to generate a coordinate signal representing the touch area according to the touch signal.

The area analyzing unit 110 is configured to obtain a touch area value representing the touch area according to the touch signal. The touch area indicates the area where the touch object (such as a finger) is in contact with the touch sensing unit 106. The touch area can be obtained by the number of touched touch points or by the coordinates of the touched touch point.

The video processing unit 112 is configured to adjust an image display ratio of the area corresponding to the coordinate signal in the display unit 104 according to the touch area value. The video processing unit 112 includes a storage module 122, a scaling module 124, and an adjustment module 126. The storage module 122 stores a preset area value. The conversion module 124 is configured to obtain a ratio of the touch area value to the preset area value, for example, the preset area value is S0, and the touch area value S1, then the ratio of the two is y=S1/S0*100%. The adjustment module 126 is configured to adjust an image display ratio of the area corresponding to the coordinate signal in the display unit 104 according to the ratio. For example, if the image default ratio is a, then the adjusted ratio b=a*y. This ratio adjustment includes zooming in and out. For example, the difference in the angle or the strength of the user's finger in contact with the touch sensing unit 106 directly affects the contact area with the touch sensing unit 106, and due to the touch feeling. The unit 106 is a continuous inductive touch action, so that the user can rotate the finger or control the pressure to achieve image zooming. This proportional adjustment method is not only easy to operate but also entertaining. The zoom mode may be centered on the image position corresponding to the touch position, or may be enlarged by using a function table project in the image corresponding to the touch position as an enlargement target, and the function table project may be a picture. , a dialog box, an icon or an option bar.

The adjustment button 114 is used to turn on and off the proportional adjustment function of the video processing unit 112, such as pressing to indicate on, release to indicate off, or first pressing to indicate start, second pressing to indicate off, or based on touch sensing The touch button of unit 106.

The prompt input unit 116 is configured to respond to the close signal of the adjustment button 114, and provide a selection input interface for restoring the default ratio, and is displayed by the display unit 104. The user completes the input action by touching the touch sensing unit 106 and determining the touch position by the position analyzing unit 108. The selection command input by the user is sent to the adjustment module 126, and the selection instruction includes a resume instruction and a hold instruction. The video processing unit 112 further adjusts the image display ratio according to the selection instruction, that is, if the user inputs a resume command, the adjustment module 126 restores the image to a default scale, and if the user inputs a hold command, the adjustment module 126 maintains the image. The adjusted scale is displayed.

The prompt input unit 116 may also be absent. After receiving the proportional adjustment off signal input by the user, the adjustment module 126 directly restores the default ratio or maintains the adjusted ratio. When the touch screen device 10 is used, the user can determine the zoom ratio of the image by controlling the touch area of the finger or other touch object on the touch sensing unit 106, and change the zoom/drop target by the movement of the touch position. This allows the user to control the size of the image as desired and to meet the needs of various scales. In other embodiments, the proportional adjustment may also include only one of zooming in and out.

Please refer to FIG. 2 , which is a flowchart of an image display method of a touch screen device according to a preferred embodiment, which includes the following steps:

In step S301, the image is displayed in a default ratio.

Step S303, receiving a proportional adjustment start signal input by the user, and starting an image proportional adjustment function, the proportional adjustment includes zooming in and out.

Step S305, detecting a touch position of the user on the touch screen.

Step S307, detecting a touch area of the user on the touch screen.

Step S309, calculating a ratio of the touch area to the preset area.

Step S311, adjusting a display ratio of an image of a region corresponding to the touch position according to the ratio. The proportional adjustment method may be based on the image position corresponding to the touch position, and may be reduced/released according to the function table project in the image corresponding to the touch position.

Step S313, receiving a proportional adjustment off signal input by the user.

Step S315, providing a selection input interface for restoring the default ratio for the user to select whether to restore the default ratio, and then performing the following steps S317 and S319.

In step S317, in response to the user input, the image is restored to the default scale.

In step S319, in response to the user input, the ratio of the image display ratio is adjusted to be proportional.

The selection step of whether to restore the default ratio may also be absent. After receiving the proportional adjustment off signal input by the user, the default ratio is directly restored or the adjusted ratio is maintained. By using the image display method of the above touch screen device, the ratio is not turned off Before adjusting the function, the user can determine the display ratio of the image by controlling the touch area of the finger or other touch object, and change the proportional adjustment target by the movement of the touch position, so that the user can control the size of the image as desired, and satisfy various proportions. Demand for the tour.

It is to be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention Changes and modifications are intended to fall within the scope of the invention.

10‧‧‧Touch screen device

112‧‧‧Video Processing Unit

102‧‧‧Video Providing Unit

114‧‧‧Adjustment button

104‧‧‧Display unit

122‧‧‧Storage Module

106‧‧‧Touch sensing unit

124‧‧‧Conversion module

108‧‧‧Location Analysis Unit

126‧‧‧Adjustment module

110‧‧‧ Area Analysis Unit

116‧‧‧ prompt input unit

Claims (9)

A touch screen device includes a video providing unit and a display unit, the video providing unit is configured to provide a video image; the display unit is configured to display a video image; and the improvement is that the touch screen device further comprises: a touch sensor a unit for sensing a touch action of the user and generating a corresponding touch signal; an area analyzing unit for determining a touch area value according to the touch signal; and a video processing unit configured to use the touch area value and a preset area value The ratio adjusts the display ratio of the image in the display unit. The touch screen device of claim 1, wherein the touch screen device further comprises an adjustment button for turning on and off the proportional adjustment function of the video processing unit. The touch screen device of claim 1, wherein the touch screen device further includes: a position analyzing unit configured to generate a coordinate signal representative of the corresponding touch position according to the touch signal; the video processing unit according to the The ratio adjusts the image display ratio of the area corresponding to the coordinate signal in the display unit. The touch screen device of claim 3, wherein the ratio adjustment mode of the image is a function table in an image corresponding to the image position corresponding to the touch position or corresponding to the touch position. The project is zoomed in as a zoom in target. The touch screen device of claim 1, wherein the touch screen device further comprises: a prompt input unit, configured to respond to the turn-off signal of the adjustment button, and provide a selection input interface for restoring the default ratio, and The display unit displays; the video processing unit receives and adjusts the image display ratio according to a selection instruction input by the user. An image display method of a touch screen device, comprising the steps of: displaying an image in a default ratio; Receiving a proportional adjustment enable signal input by the user, starting an image proportional adjustment function; detecting a touch area and a touch position of the user on the touch screen; calculating a ratio of the touch area to the preset area; and adjusting the touch position according to the ratio The display ratio of the image of the corresponding area. The image display method of the touch screen device of claim 6, further comprising the steps of: after adjusting the display ratio of the image, receiving a proportional adjustment off signal input by the user; and restoring the image to The default ratio. The image display method of the touch screen device of claim 6, further comprising the steps of: receiving a proportional adjustment off signal input by the user after adjusting the display ratio of the image; and maintaining the image display The ratio is the ratio after the ratio adjustment. The image display method of the touch screen device of claim 6, further comprising the steps of: receiving a proportional adjustment off signal input by the user after adjusting the display ratio of the image; and providing whether to restore the default Select the input interface for the scale, then choose one of the following two steps: respond to the user input, restore the image to the default scale, respond to the user input, and keep the image display ratio proportional to the scale.