KR20050055284A - Portable terminal equipped with driving apparatus having osd function and the method for providing the osd - Google Patents

Abstract

Disclosed is a driving apparatus having an OSD function for performing a process for implementing an OSD function by changing a combination of data according to the transmittance bits by adding transmittance bits as data to image data. A mobile terminal and a method for providing an OSD thereof, the mobile terminal outputting an OSD formed by overlapping two screens to a liquid crystal display, comprising: a graphic RAM configured to store an OSD image and original image data; When the OSD request signal is input from the outside is configured to scan the OSD image and the original image data from the graphics RAM, the driving IC including a blending execution unit for forming the OSD image data according to a predetermined transmittance to be output to the liquid crystal display unit It is characterized by.

Description

Portable terminal equipped with driving apparatus having OSD function and the method for providing the OSD}

The present invention relates to a portable terminal equipped with a driving device having an OSD function and a method for providing the same.

More specifically, a driving apparatus having an OSD function for adding a bit of transmittance to the image data as data to change the combination of data according to the transmittance bits to implement the OSD function in the driving IC of the portable terminal. The present invention relates to a portable terminal mounted thereon and an OSD providing method thereof.

In general, OSD (On Screen Display) is one of the functions used in television, projection, and computer. In a typical OSD, a blue screen is displayed on a part of a screen on which an image is displayed, a text message to be guided to the user is displayed on top of the blue screen, or a control command for controlling the current system is displayed. To make it possible.

However, in response to the development of technology and the demands of the user, as shown in FIG. 1, two screens are overlapped on one screen, thereby providing an OSD that displays two pieces of information simultaneously on one screen.

Recently, as the functions of the portable terminal are diversified, the OSD function as described above is implemented by an MPU (Micro Process Unit). That is, the MPU outputs the OSD processed data to the driver IC, and the driver IC displays the OSD image data on the LCD screen of the portable terminal.

Therefore, a problem arises in that the load of the MPU is increased.

Accordingly, the present invention has been made to solve the problems according to the prior art as described above, an object of the present invention is to add the transmittance bit to the image data as data to change the combination of data according to the transmittance bit to implement the OSD function The present invention provides a portable terminal equipped with a driving device having an OSD function for performing a process for performing the process in the driving IC of the portable terminal, and a method of providing the same.

According to an aspect of the present invention, there is provided a portable terminal for outputting an OSD formed by overlapping two screens to a liquid crystal display, comprising: a graphic RAM configured to store an OSD image and original image data; When the OSD request signal is input from the outside is configured to scan the OSD image and the original image data from the graphics RAM, the driving IC including a blending execution unit for forming the OSD image data according to a predetermined transmittance to be output to the liquid crystal display unit It is characterized by.

In addition, the driving IC scans the OSD image and the original image selected by the user, and forms OSD image data using the scanned OSD image and the original image according to the transmittance set by the user.

In this case, the OSD image data is characterized by the following equation.

[Equation]

OSD image = α × OSD image + (1-α) × original image

In addition, another embodiment of the present invention, in the OSD providing method of the portable terminal to implement the OSD function using the drive IC, if the OSD request signal from the outside inputs the original image data after scanning the OSD image data from the graphics RAM Scan the image data, and apply the preset transmittance to the scanned OSD image data and the original image data to form the OSD image data so as to be output to the liquid crystal display.

The OSD image and the original image may be selected by a user, and the transmittance may be set by the user.

In this case, the OSD image data is characterized by the following equation.

[Equation]

OSD image = α × OSD image + (1-α) × original image

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a schematic block diagram illustrating a driving device having an OSD function according to the present invention, FIG. 3 is a timing diagram of a blending process applied to the present invention, and FIG. 4 is a view illustrating a transmittance setting method for implementing the present invention. It is a table | surface for doing it.

As shown in FIG. 2, the portable terminal includes a graphic RAM 110 for storing an OSD image and original image data in a conventional component, and from the graphic RAM 110 when an OSD request signal is input from the outside. The driver IC 100 includes a blending performing unit 101 which scans the OSD image and the original image data, forms OSD image data according to a predetermined transmittance, and outputs the image data to the liquid crystal display.

At this time, the OSD image and the original image selection signal can be selected by using a key button other than the menu provided in the form of navigation in the portable terminal, the transmittance is also supper. The signal selected by the user is transferred to the driving IC 100 through the MPU.

In addition, the driving IC 100 scans the OSD image and the original image selected by the user, and forms OSD image data using the scanned OSD image and the original image according to the transmittance set by the user. According to the transmittance, it can be classified into perfect permeation, semi-permeability, opacity and the like. Depending on the application, the transmittance can be set more precisely, such as 70% transmission and 30% transmission, and an OSD image reflecting the transmission can be provided.

In this case, the OSD image data is formed by the following equation.

[Equation]

OSD image = α × OSD image + (1-α) × original image

If the transmittance is set to 1 in the above equation, the image to be OSD is output as the OSD image to the liquid crystal display. In other words, the image output to the liquid crystal display is an image to be displayed only OSD, 100% transmitted image (complete transmission). On the other hand, if the transmittance is set to 0.5, the OSD image and the original image are overlapped and output.

In order to set the transmittance as described above, transmittance bits are allocated to the color data as shown in FIG. 4. In this case, since each bit is converted to an RGB value, when the equation is applied to each RGB by referring to the transmittance bit when converted to an RGB value, an OSD image having a set transmittance can be provided.

The OSD implementation method of the driving IC of the portable terminal configured as described above is as follows.

5 is a flowchart illustrating a method for providing an OSD in a portable terminal according to the present invention.

As shown in FIG. 5, the driving IC 100 determines whether an OSD item is selected by the user (S100). If it is determined that the OSD item is selected, the OSD image and the original image selected by the user are read from the graphic RAM 110 (S110).

In this case, the scan data in the graphic RAM 110 is transmitted for each source channel as shown in FIG. 3, and the scan operation is performed twice in the OSD area. The OSD image is scanned first, the OSD image is scanned, and then the original image is scanned.

The scanned OSD image and the original image as described above are input to the blending performing unit 101. Then, the blending performing unit 101 applies the OSD image and the original image inputted in the above equation, assigns transmittance bits to the color data by applying the transmittance set by the user (S120), and forms the OSD image. Let's do it.

The OSD image formed as described above is output on the screen of the liquid crystal display (S130).

Accordingly, according to the present invention, a process for implementing an OSD function by changing the combination of data according to the transmittance bits by adding the transmittance bits as data to the image data is performed in the driving IC of the portable terminal, thereby reducing the load of the MPU. There is an effect to implement a seamless interface on the portable terminal.

The present invention is not limited only to the above embodiments, and it is apparent that many modifications are possible by those skilled in the art within the technical spirit of the present invention.

1 is a view for explaining a general OSD function,

2 is a schematic block diagram illustrating a driving device having an OSD function according to the present invention;

3 is a blending processing timing chart applied to the present invention;

4 is a table for explaining a transmittance setting method for implementing the present invention,

5 is a flowchart illustrating a method for providing an OSD in a portable terminal according to the present invention.

*** Explanation of main parts of drawing ***

100: driver IC

101: blending execution unit

110: graphics RAM

Claims (6)

In the portable terminal for outputting the OSD formed by overlapping the two screen to the liquid crystal display unit, A graphics RAM for storing the OSD image and the original image data; A driving IC including a blending performing unit configured to scan an OSD image and original image data from the graphic RAM when an OSD request signal is input from the outside, to form OSD image data according to a preset transmittance, and to output the OSD image to the liquid crystal display; Portable terminal equipped with a drive device having an OSD function, characterized in that consisting of. The method of claim 1, wherein the driving IC, Equipped with a driving device having an OSD function to scan the OSD image and the original image selected by the user, and to form the OSD image data using the scanned OSD image and the original image according to the transmittance set by the user Handheld terminal. The portable terminal as claimed in claim 1 or 2, wherein the OSD image data is formed by the following equation. [Equation] OSD image = α × OSD image + (1-α) × original image In the OSD providing method of a portable terminal to implement the OSD function using a drive IC, When the OSD request signal is input from the outside, the OSD image data is scanned from the graphics RAM, the original image data is scanned, and the OSD image data is formed by applying a preset transmittance to the scanned OSD image data and the original image data. OSD providing method of a portable terminal, characterized in that the output is negative. The method of claim 4, wherein the OSD image and the original image are selected by a user, and the transmittance is also set by the user. The method of claim 4 or 5, wherein the OSD image data is formed by the following equation. [Equation] OSD image = α × OSD image + (1-α) × original image