TWI423081B - Image display method and touch screen apparatus using the same - Google Patents

Description

Touch screen device and image display method thereof

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

Nowadays, many portable electronic products have display screens, such as mobile phones, game consoles, etc. For the convenience of operation, many portable electronic products are equipped with touch screens, which bring a lot of user operations. Convenience. 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 and a display unit for displaying a video image. The touch screen device further includes: a touch sensing unit, configured to continuously sense a user's touch motion at a certain time interval, and generate a corresponding touch signal each time the touch is sensed; and a position analysis unit for Each touch signal generates a coordinate signal representing a corresponding touch position; a video processing unit is configured to adjust a display ratio of an image in the display unit corresponding to the coordinate signal; and an adjustment button is used to turn the video processing on and off. The proportional adjustment function of the unit.

An image display method of a touch screen device includes the following steps: displaying an image at a default ratio; receiving a proportional adjustment enable signal input by a user, starting a proportional adjustment function; detecting a touch position of the user on the touch screen; adjusting a display ratio of an image of the area corresponding to the touch position; determining whether a proportional adjustment off signal input by the user is received, and if the proportional adjustment off signal is not received, returning to detecting the touch of the user on the touch screen The steps of the location.

The above-mentioned touch screen device and the image display method thereof are cyclically executed by the continuous touch of the user before the proportional adjustment function is turned off, and the user can control the touch of the finger or other touch object. The time determines the display ratio of the image, and the target of the proportional adjustment is changed by the movement of the touch position, so that the user can control the image size as desired, and satisfy various viewing requirements.

10‧‧‧Touch screen device

110‧‧‧Video Processing Unit

50‧‧‧ Target location

112‧‧‧Adjustment button

102‧‧‧Video Providing Unit

120‧‧‧Amplification switch

104‧‧‧Display unit

122‧‧‧Reducing switch

106‧‧‧Touch sensing unit

124‧‧‧Recovery button

108‧‧‧Location Analysis Unit

S301~S313, S401~S413‧‧‧ image display method flow

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

2 is a schematic diagram of a use interface of the touch screen device shown in FIG. 1.

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

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

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

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

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 configured to continuously sense a user's touch motion at a certain time interval, and generate a corresponding touch signal each time the touch is sensed.

The location analyzing unit 108 is configured to generate a coordinate signal representing the corresponding touch location according to each of the touch signals.

The video processing unit 110 is configured to adjust an image display ratio of the area corresponding to the coordinate signal in the display unit 104 according to a preset ratio, where the ratio adjustment includes zooming in and out.

The adjustment button 112 is used to turn the proportional adjustment function of the video processing unit 110 on and off. The adjustment button 112 includes an amplification switch 120, a reduction switch 122, and a recovery button 124. The amplifying switch 120 is configured to turn on and off the video processing unit 110 in response to a user operation. The image enlargement function, the amplifying switch 120 can be a push button, pressing means opening, and bounce means turning off. The zoom-down switch 122 is configured to turn on and off the image reduction function of the video processing unit 110 in response to a user operation, and the zoom-down switch 122 can also be a push-type button, the press-off means to be on, the bounce-up means to turn off; or the zoom-in switch 120 and The reduction switch 122 is a three-way switch. The first way indicates that the zoom function is on, the second line indicates that the zoom function is on, and the third line indicates that the zoom function is off. The recovery key 124 is responsive to the user operation to generate a resume command, and the video processing unit 110 will restore the default scale of the image in the display unit 104 according to the resume command, the default ratio being the ratio provided by the video providing unit 102.

Referring to FIG. 2 , the amplification switch 120 , the reduction switch 122 , and the recovery button 124 are both disposed on the side of the touch screen device 10 , wherein the touch sensing unit 106 (not shown) is tiled on the surface of the display unit 104 . The working process of the touch screen device 10 is as follows: the amplifying switch 120 activates the zooming function of the video processing unit 110 in response to the user's operation. At this time, the touch sensing unit 106 continuously senses whether an object (such as a finger, a stylus, etc.) touches at a certain time interval, and generates a corresponding touch signal every time the touch action is sensed. For example, in FIG. 2, the user's finger touches the target position 50, and the position analyzing unit 108 will generate a coordinate signal of the target position 50 in response to the touch and send it to the video processing unit 110. The video processing unit 110 responds to the coordinate signal of the target position 50, and enlarges the image of the area corresponding to the target position 50 in the display unit 104 by a preset ratio. The zooming method may be a plurality of types, such as: zooming in on the image position corresponding to the touch position, and zooming in on the function table project in the image corresponding to the touch position, and the function table project may be one. A picture, a dialog box, an icon, or an option bar. Because the touch sensing unit 106 continuously senses the user's touch action at a certain time interval, if the user's finger does not leave the touch sensing unit 106, the touch sensing unit 106 will be based on the sensing frequency thereof. (ie, the time interval) continuously generates a touch signal, then the video processing unit 110 will continuously enlarge the image displayed by the display unit 104 by a preset ratio until the video processing unit 110 receives the input by the user through the amplifying switch 120. The zoom-in function closes the signal or the resume command input by the resume button 124, that is, if the zoom-in function is turned off, that is, the zoom-in function of the video processing unit 110 is turned off, the display unit 104 displays the image in an enlarged scale, and can also automatically recover to The default ratio. The video processing unit 110 restores the image display to the default scale if a resume command is received. The reduction of the image is also the principle, and will not be repeated. In addition, in the embodiment, the video processing unit 110 further pre-sets a maximum magnification ratio value and a maximum reduction ratio value, and when the image reduction/release ratio reaches the two values, the video processing unit 110 stops the reduction/reproduction action. .

When the touch screen device 10 is used, the user can determine the zoom ratio of the image by controlling the touch time of the finger or other touch object on the touch sensing unit 106, and change the zoom/release by the movement of the touch position. The target allows the user to control the size of the image as desired, and the default ratio of the image can be restored at any time by the recovery button 124 to meet various scales of viewing requirements. In other embodiments, the proportional adjustment may also include only one of zooming in and out.

Please refer to FIG. 3 , which is a flowchart of an image display method of a touch screen device according to a preferred embodiment, including the following steps: Step S301 , displaying an image in a default ratio.

Step S303, receiving a proportional adjustment enable 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, adjusting the display ratio of the image of the area corresponding to the touch position according to a preset 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.

In step S309, it is determined whether the proportional adjustment off signal input by the user is received. If the proportional adjustment off signal is not received, the process returns to step S305, and if the proportional adjustment off signal is received, the process proceeds to step S311.

In step S311, the proportional adjustment function is turned off and the image is displayed in a scaled ratio.

Step S313, receiving a recovery instruction input by the user, and restoring the image to a default ratio.

In the image display method of the above touch screen device, step S313 may also be before receiving the proportional adjustment off signal.

4 is a flow chart of an image display method of a touch screen device according to another preferred embodiment, which is different from the image display method of the touch screen device shown in FIG. 3: after receiving the proportional adjustment off signal, the method is turned off. The scale adjustment function restores the image to the default scale (step S413 shown in Figure 4), and receives the recovery command input by the user, and the step of restoring the image to the default scale is before receiving the proportional adjustment off signal (Fig. 4 Step S409) is shown.

By using the image display method of the touch screen device, the image ratio adjustment step is cyclically executed by the user's continuous touch before the proportional adjustment function is turned off, and the user can control the finger or other touch. The touch time of the object determines the display ratio of the image, and the scale adjustment target is changed by the movement of the touch position, so that the user can control the size of the image as desired, and the default ratio of the image can be restored at any time to meet the needs of various proportions. .

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

110‧‧‧Video Processing Unit

102‧‧‧Video Providing Unit

112‧‧‧Adjustment button

104‧‧‧Display unit

120‧‧‧Amplification switch

106‧‧‧Touch sensing unit

122‧‧‧Reducing switch

108‧‧‧Location Analysis Unit

124‧‧‧Recovery button

Claims (10)

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 continuously sensing a touch action of the user at a certain time interval, and continuously generating a touch signal according to the sensing frequency of the touch sensing unit when the touch unit is continuously touched; and a position analyzing unit for sensing the touch Each touch signal continuously generated by the unit generates a coordinate signal representing a corresponding touch position; a video processing unit is configured to adjust a display ratio of an image in the display unit corresponding to the coordinate signal; and an adjustment button is used to turn the video on and off The proportional adjustment function of the processing unit. The touch screen device of claim 1, wherein the proportional adjustment comprises at least one of zooming in and out. The touch screen device of claim 1, wherein the adjustment button comprises an amplification switch and an reduction switch, the amplification switch is configured to turn on and off an image enlargement function of the video processing unit; the reduction switch is used to turn on and Turn off the image reduction function of the video processing unit. The touch screen device of claim 1, wherein the adjustment button further comprises a recovery button for generating a resume command, and the video processing unit restores a default proportion of the image displayed in the display unit according to the resume command. The touch screen device of claim 1, wherein the aspect ratio of the image is adjusted to be enlarged or reduced centering on an image position corresponding to the touch position. The touch screen device of claim 1, wherein the image is adjusted in proportion The enlargement or reduction is performed for the function table project in the image corresponding to the touch position as the enlargement target. An image display method for a touch screen device includes the following steps: displaying an image at a default ratio; receiving a proportional adjustment on-open signal input by a user, and starting a proportional adjustment function; continuously detecting a user on a touch screen at a certain time interval The touch action is performed, and when the touch screen is continuously touched, the touch signal is continuously generated according to the sensing frequency of the touch screen, and a coordinate signal representing the corresponding touch position is generated according to each touch signal; and the touch signal is adjusted according to the touch signal The display ratio of the image of the area corresponding to the touch position; determining whether the proportional adjustment off signal input by the user is received, and if the proportional adjustment off signal is not received, returning to detecting the touch position of the user on the touch screen A step of. The image display method of the touch screen device of claim 7, further comprising the steps of: receiving a recovery instruction input by the user, and restoring the image to a default ratio. The image display method of the touch screen device according to claim 7, wherein if the proportional adjustment off signal is received, the proportional adjustment function is turned off and the image is displayed in a scaled ratio. The image display method of the touch screen device according to claim 7, wherein if the proportional adjustment off signal is received, the proportional adjustment function is turned off and the image is restored to a default ratio.