KR100598582B1 - Apparatus and method for providing resizing image of terminal monitor - Google Patents

Abstract

The present invention relates to an image resizing apparatus and method for adjusting a size of an image made of an object and displaying the same on a terminal monitor.

When the size of the terminal monitor is increased according to the preferences of consumers, the size of the second frame buffer having the same size as that of the monitor memory storing the image displayed on the terminal monitor is also larger than the size of the first frame buffer for the application. You lose. This, in turn, causes a need to redevelop an application program that has already been created. In the present invention, an offset, which is a position where an object in the first frame buffer is stored according to the size difference between the first and second frame buffers, is prevented. The object is stored at a position indicated by the coordinate value from the coordinate table in which the offset coordinate value in the second frame buffer corresponding to the coordinate value is stored. As described above, the image resizing operation can be performed at high speed by adjusting and displaying the storage position and the size of the storage frame in the second frame buffer by using the offset coordinate values calculated and stored in advance.

Image scaling, frame buffers, resizing, platforms, applications

Description

Image resizing device of terminal monitor and its method {APPARATUS AND METHOD FOR PROVIDING RESIZING IMAGE OF TERMINAL MONITOR}

1 is a diagram illustrating in detail an apparatus for adjusting an image size of a terminal monitor according to an exemplary embodiment of the present invention.

FIG. 2 is a diagram sequentially illustrating a detailed operation of the apparatus for adjusting the image size of the terminal monitor shown in FIG. 1.

3 is a diagram conceptually illustrating an enlargement algorithm for each frame buffer according to an embodiment of the present invention.

The present invention relates to a terminal monitor, and more particularly, to an apparatus and a method for adjusting an image size of a terminal monitor.

Conventional terminal monitors, e.g. LCD monitors, receive different RGB signals depending on the video mode, and at the time of manufacturing the monitor, the most similar signals among standard signals preset at the factory to reduce the deviation of the display screen from the input RGB signals. After the selection, the size and position of the screen according to the input RGB signal are adjusted and displayed according to the timing of the selected signal.

However, the method of adjusting the screen deviation by selecting the most similar signal among the preset standard signals as described above does not display an appropriate screen for the RGB video signal inputted differently according to the video mode. And position) often has to be readjusted from time to time.

In order to prevent such inconvenience, a recent trend is developing a mobile platform application in a terminal such as a mobile phone in accordance with the hardware LCD size of the terminal.

However, this also causes the Contents Provider (CP), which develops the application, the hassle of redeploying the existing application to the larger LCD size whenever a larger LCD appears. As such, the reason why the LCD size is getting bigger is that the user can increase the satisfaction.

In order to reduce the burden of redevelopment of the CP, when the LCD size increases, sometimes the remaining margin is filled with a frame or the like without changing the size of the application, but this is inconvenient for use because the application size is displayed smaller than the LCD screen. Not only that, but also the quality of the UI (User Interface) tends to be degraded.

Therefore, there is an urgent need for an apparatus and a method for easily adjusting and displaying a corresponding image when the LCD size increases according to a user's preference.

The technical problem to be solved by the present invention is to solve such a problem, and when the size of the terminal monitor is enlarged, the size of each object constituting the image can be displayed on the monitor at a high speed without a separate calculation process. The present invention provides an apparatus and a method for resizing an image of a terminal monitor.

According to an aspect of the present invention, there is provided an apparatus for adjusting an image size of a terminal monitor. A first frame buffer which temporarily stores the data in a corresponding location; A second frame buffer having a same size as a monitor memory for storing an image displayed on the terminal monitor; A coordinate table storage unit for storing a coordinate table including offset coordinate values in the second frame buffer corresponding to offset coordinate values corresponding to object storage positions in the first frame buffer according to a difference in size between the first and second frame buffers ; And reading the offset coordinate value on the second frame buffer from the coordinate table and storing the object at the position indicated by the offset coordinate value when the size of the second frame buffer is larger than the size of the first frame buffer. It includes a controller.

The display apparatus may further include a monitor memory configured to receive an image from the second frame buffer and display the image on the terminal monitor.

In addition, the image size adjustment method of the terminal monitor according to an aspect of the present invention, in the image size adjustment method for displaying an image consisting of at least one object on the terminal monitor, a) comprises an image input from the outside Temporarily storing the object in a first frame buffer; b) comparing the size of the second frame buffer having the same size as the monitor memory storing the image displayed on the terminal monitor with the size of the first frame buffer; c) if the second frame buffer is larger than the first frame buffer, an offset on the second frame buffer from a coordinate table in which the offset coordinate value in the second frame buffer corresponding to the offset coordinate value in the first frame buffer is stored. Reading coordinate values; And d) storing the object in the second frame buffer according to the read offset coordinate value to display an image that matches the terminal monitor size.

In addition, a recording medium storing a program according to an aspect of the present invention, the recording medium comprising a video resizing method for displaying an image consisting of at least one object on a terminal monitor, a) input from the outside Temporarily storing an object constituting the captured image in a first frame buffer; b) comparing a size of a second frame buffer having a size equal to that of a monitor memory storing an image displayed on the terminal monitor with the size of the first frame buffer; c) if the second frame buffer is larger than the first frame buffer, from the coordinate table in which the offset coordinate value in the second frame buffer corresponding to the offset coordinate value in the first frame buffer is stored; Reading offset coordinates; And d) storing the object in the second frame buffer and displaying an image suitable for the terminal monitor size according to the read offset coordinate value. do.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention. Like parts are designated by like reference numerals throughout the specification.

1 is a diagram illustrating in detail an apparatus for adjusting an image size of a terminal monitor according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the apparatus 100 for adjusting an image size of a terminal monitor includes a first frame buffer 110, a second frame buffer 120, a monitor memory 130, a controller, 140 and the coordinate table storage unit 150.

Here, the first frame buffer 110 is a frame buffer for the application, if the application is set to the horizontal X and vertical Y, the second frame buffer 120 is a frame buffer for the platform (platform) is the same as the LCD size of the terminal Has a size. Then, the platform is set to the horizontal X 'and the vertical Y'.

The frame buffer is a storage device that temporarily stores image information to be displayed on a screen in a raster scanning method, and each storage unit of the frame buffer is reflected on the screen as it corresponds to one pixel of the screen. That is, the on / off or color of each point on the screen is stored as a bit map, and when a certain content is written to the storage device, it is displayed on the screen.

However, the first and second frame buffers 110 and 120 according to the exemplary embodiment of the present invention are memories in which sizes thereof may be flexibly changed according to terminal monitor sizes.

In detail, first, the first frame buffer 110 temporarily stores image information according to an application program at a corresponding location.

If the controller 140 temporarily stores image information, that is, objects, of an application program in the first frame buffer 110, the controller 140 stores a second frame having a larger size than that of the first frame buffer 110. When stored in the buffer 120 it is calculated how much to enlarge.

That is, the controller 140 calculates how many times the objects constituting the image can fill the second frame buffer 120 normally, and then each object is placed in the second frame buffer according to the calculated result. Allow temporary storage.

Here, the general expansion algorithm is as follows.

If you enlarge a point (x, y) on a frame buffer with a width of DX and a length of DY to a frame buffer with width of DY 'and a length of DY', the new enlarged point (x ', y') is Same as

x '= x * (DX' / DX), y '= y * (DY' / DY)

Therefore, the resizing of the frame buffer is performed as in the following code.

for (i = 0; i <DX'i ++) {

for (j = 0; j <DY'j ++) {

       RGB = getPixel (i * (DX / DX '), j * (DY / DY'));

putPixel (i, j, RGB);

}

}

However, the scaling method as described above causes the central control unit (CPU) to perform a lot of operations such as multiplication and division, which consumes a lot of clocks, thereby causing a slowdown.

For this reason, the controller 140 according to an embodiment of the present invention stores the calculated value in a one-dimensional or two-dimensional array, and at the time when an operation for expanding the size is needed, an index value suitable for the frame buffer size Read and resize without computation. The detailed description is as follows.

For (i = 0; i <DX; i ++)

frame buffer Offset X [i] = i * (DX / DX ');

for (j = 0; j <DY'j ++)

frame buffer Offset Y [j] = j * (DY / DY ');

As such, the controller 140 according to an exemplary embodiment of the present invention stores the coordinates in the second frame buffer 120 from the coordinate table storage unit 150 in which previously calculated coordinate values are stored at the time when the screen size needs to be adjusted. After reading the size value of the object to be saved, the object is saved according to the read size value.

This, in turn, does not perform a separate operation for enlarging an object, thereby enabling a high-speed enlarging operation. In addition, the present invention eliminates the need to redevelop application programs according to the size of the LCD of the terminal, thereby greatly helping in the development of original applications.

Next, the second frame buffer 120 temporarily stores image information consisting of an object enlarged by a certain size under the control of the controller 140.

The monitor memory 130 is the same size as the second frame buffer 120 and stores image information in the same size and location in the second frame buffer 120 under the control of the controller 140. This is immediately displayed on the LCD of the terminal.

If the object stored in the first frame buffer 110 is stored in the second frame buffer 120, the coordinate table storage unit 150 may fill the second frame buffer 120 only if the object is enlarged several times. Stores a coordinate table constituting a structure in which an offset coordinate value, which is a coordinate value for, is stored. This is a coordinate value on the second frame buffer 120 according to the size ratio of the first and second frame buffers 110 and 120, and stores a previously calculated coordinate value.

The offset coordinate values of the coordinate table storage unit 150 are periodically updated or temporarily updated according to the size of each frame buffer.

Then, the operation process of the image adjusting apparatus of the terminal monitor constituting such a configuration will be described through the accompanying drawings.

FIG. 2 is a diagram sequentially illustrating a detailed operation of the apparatus for adjusting the image size of the terminal monitor shown in FIG. 1.

As shown in FIG. 2, the first frame buffer 110 of the image resizing apparatus 100 of the terminal monitor according to an embodiment of the present invention temporarily stores image information according to an application program at a corresponding position (S210). .

Then, when the controller 140 stores image information of an application program, that is, objects, temporarily in the first frame buffer 110, the controller 140 may determine the size of the second frame buffer 120 for the platform and the first frame buffer ( Compare the size of 110) (S220).

Subsequently, if the size of the frame buffers 110 and 120 is the same as the comparison result or the size of the second frame buffer 120 is smaller, the general image display operation is performed while the size of the second frame buffer 120 is compared. If larger than the first frame buffer, the controller 140 calculates how much the object should be enlarged when it is stored in the second frame buffer 120.

That is, the controller 140 calculates how many times the objects constituting the image can fill the second frame buffer 120 normally.

In this case, the controller 140 according to an embodiment of the present invention, when the screen size needs to be adjusted, the coordinate table storage unit 150 may set the size value (-offset coordinate value) of the object to be stored in the second frame buffer 120. After reading from), the object is stored in the second frame buffer 120 according to the read offset coordinate value (S230).

That is, in the coordinate table storage unit 150 according to the embodiment of the present invention, when an object stored in the first frame buffer 110 is stored in the second frame buffer 120, the object must be enlarged several times, that is, at any position. An offset coordinate value which is a coordinate value of whether the second frame buffer 120 can be normally filled only when stored in the second frame buffer 120 is stored.

Then, the second frame buffer 120 temporarily stores the image information including the object enlarged by a certain size under the control of the controller 140 (S240).

This, in turn, does not perform a separate operation for enlarging an object, thereby enabling a high-speed enlarging operation. In addition, the present invention eliminates the need to redevelop application programs according to the size of the LCD of the terminal, thereby greatly helping in the development of original applications.

Subsequently, the monitor memory 130 stores the image information temporarily stored in the second frame buffer 120 in the same size and position under the control of the controller 140, thereby displaying the image on the LCD of the terminal as it is ( S250). 3 is a view showing an example of a magnification algorithm using the offset coordinate value.

3 is a diagram conceptually illustrating an enlargement algorithm for each frame buffer according to an embodiment of the present invention.

As shown in FIG. 3, when the position of the object temporarily stored in the first frame buffer having the horizontal DX and the vertical DY is (x, y), the controller 140 may store the object in the second frame buffer 120. In this case, an offset coordinate value indicating which image to be displayed only when it is stored can be normalized is read from the coordinate table storage unit 150, so that the object has a corresponding position (x ', y') in the second frame buffer 120. Temporarily stored in

Thereafter, the controller 140 allows the temporarily stored object in the second frame buffer 120 to be stored in the LCD memory 130 having the same size and then displayed on the LCD monitor (S250).

As such, the image resizing apparatus and method of the terminal monitor according to an exemplary embodiment of the present invention allow a high-speed magnification operation by not performing a separate operation for enlarging each object constituting the image. In addition, the present invention eliminates the need to redevelop application programs according to the size of the LCD of the terminal, thereby greatly helping in the development of original applications.

The drawings and detailed description of the invention are exemplary only, and are used for the purpose of illustrating the invention only, and are not intended to be limiting or to limit the scope of the invention described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The apparatus and method for resizing an image of a terminal monitor according to the present invention do not perform a separate operation for enlarging each object constituting an image to be displayed in the enlarged image when the terminal monitor is enlarged, thereby increasing the size of the image. Allow recalibration work. In addition, the present invention eliminates the hassle of redeveloping the application program according to the LCD size of the terminal, and has an effect that can greatly help the development of the original application program.

Claims (6)

An image resizing apparatus for displaying an image made of an object on a terminal monitor, A first frame buffer temporarily storing an object constituting an image input from the outside at a corresponding position; A second frame buffer having a same size as a monitor memory for storing an image displayed on the terminal monitor; A coordinate table storage unit for storing a coordinate table including offset coordinate values in the second frame buffer corresponding to offset coordinate values corresponding to object storage positions in the first frame buffer according to a difference in size between the first and second frame buffers ; And A controller configured to read an offset coordinate value on the second frame buffer from the coordinate table and store the object at a position indicated by the offset coordinate value when the size of the second frame buffer is larger than the size of the first frame buffer. (controller) Image resizing device of the terminal monitor comprising a. According to claim 1, A monitor memory for receiving an image from the second frame buffer and displaying the image on the terminal monitor Image resizing device of the terminal monitor further comprising. The method of claim 2, The coordinate table storage unit, And a calculated coordinate value in the second frame buffer according to a size ratio between the first frame buffer and the second frame buffer. An image resizing method for displaying an image composed of at least one object on a terminal monitor, a) temporarily storing an object constituting an image input from the outside in a first frame buffer; b) comparing the size of the second frame buffer having the same size as the monitor memory storing the image displayed on the terminal monitor with the size of the first frame buffer; c) if the second frame buffer is larger than the first frame buffer, an offset on the second frame buffer from a coordinate table in which the offset coordinate value in the second frame buffer corresponding to the offset coordinate value in the first frame buffer is stored. Reading coordinate values; And d) storing the object in the second frame buffer according to the read offset coordinate value, and displaying an image suitable for the terminal monitor size Image size adjustment method of the terminal monitor comprising a. The method of claim 4, wherein Step c) is And a coordinate value calculated in the second frame buffer according to the size ratio between the first frame buffer and the second frame buffer is read from the coordinate table. Claims [1] A recording medium comprising an image resizing method for displaying an image composed of at least one object on a terminal monitor. a) temporarily storing an object constituting an image input from the outside in a first frame buffer; b) comparing a size of a second frame buffer having a size equal to that of a monitor memory storing an image displayed on the terminal monitor with the size of the first frame buffer; c) if the second frame buffer is larger than the first frame buffer, an offset on the second frame buffer from a coordinate table in which the offset coordinate value in the second frame buffer corresponding to the offset coordinate value in the first frame buffer is stored. Reading coordinate values; And d) storing the object in the second frame buffer according to the read offset coordinate value and displaying an image suitable for the terminal monitor size A computer-readable recording medium having a program recorded thereon.

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