KR20050017893A - Method of displaying real-time background for navigation in a vehicle - Google Patents

Abstract

PURPOSE: A method for representing the real time background of a car navigation is provided to secure the reality of the background representation without requiring the additional storage for the picture. CONSTITUTION: A method for representing the real time background of a car navigation includes the steps of: (a) making the communication module access the weather information by sending the signal at the CPU of the car navigation; (b) transmitting(120) the downloaded weather information to the CPU by connecting to the weather center; (c) storing(130) the weather information to the 'BUFFER1'; (d) generating(140) the 'WHETHER(X)(Y)' with matching the weather information stored at the 'BUFFER1' to the previously memorized background screen; (e) storing(150) the calculated signal of the light as 0¯255 values; (f) determining(160) whether the light value is 128 or not; (g) setting(170) NEW-WHETHER(X)(Y)=WHETHER(X)(Y) when the condition of the step (f) is satisfied; and (h) transmitting(180) the background display finish to the CPU.

Description

METHOOD OF DISPLAYING REAL-TIME BACKGROUND FOR NAVIGATION IN A VEHICLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a real-time background representation method for vehicle navigation, and more particularly, to pixel information (X, Y coordinates and RGB (red, green, and blue) of a liquid crystal display (hereinafter referred to as LCD) monitor. The present invention relates to a real-time background expression method of a vehicle navigation for realistically expressing a background screen without storing a separate picture.

In order to obtain weather information, weather information is obtained at regular intervals by using a communication of a communication control device installed in a vehicle, for example, by accessing a specific Internet site. This weather information is processed by a microcomputer and used for path search and screen representation (background). Among these, the screen representation (background) selects and displays one of the already stored screens corresponding to the weather information.

The screen expression (background) (hereinafter, referred to as a background expression) is as follows.

First, a wallpaper suitable for various weather such as sunny, cloudy, rain, snow and typhoon is stored in advance.

 After that, a time zone screen is created for each wallpaper and stored in advance. (Usually, two screens are used day and night.) Also, weather information is acquired through communication by a certain period.

And it finds and displays the saved screen in consideration of weather information and current time.

Such a technique is disclosed in Japanese Patent Application Laid-Open No. 2000-121377.

However, according to the conventional technology as described above, the picture storage is necessary for the background representation, and a lot of space is required for the picture storage. The required number of wallpapers is obtained by the basic background of each weather X the brightness of the corresponding time (usually day and night).

In addition, a picture file with high resolution is large in size, and a picture storage is necessary to implement a background screen, and more storage space is required to express the weather in more detail, which requires a lot of storage space.

Also, the background expression is less realistic.

In other words, even sunny day weather may be dark or bright depending on the degree of clouds, even if it is clear and without clouds, for example, the brightness at 5 o'clock and 5:10 may be completely different. Since only two people are expressed in reality.

The present invention was created to solve the above problems, and an object of the present invention is to provide a real-time background representation method of a vehicle navigation system to realistically express a background screen without storing a separate picture.

The real-time background representation method of the vehicle navigation of the present invention for achieving the above object comprises the steps of: (a) sending a signal from the CPU of the vehicle navigation to the communication module to access the weather information; (b) the communication module accessing a weather center to download necessary weather information and transmit it to the CPU; (c) the CPU storing weather information in 'BUFFER1'; (d) generating 'WHETHER [X] [Y]' by matching the weather information stored in the 'BUFFER1' with a previously stored background screen; (e) calculating a signal of light and storing the signal as 0-255 in the light; (f) calculating a background screen in consideration of the brightness value and determining whether the light value is 128; (g) setting NEW_WHETHER [X] [Y] = WHETHER [X] [Y] if the condition in step (f) is satisfied; (h) delivering a background display completion to the CPU.

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

FIG. 1 is a schematic flowchart showing sequentially a real-time background representation method of a vehicle navigation according to the present invention.

Referring to the drawings, the real-time background representation method of the vehicle navigation according to the present invention, first, by sending a signal from the CPU of the vehicle navigation for a certain period so that the communication module to access the weather information (step 110).

Subsequently, the communication module accesses a weather center and downloads necessary weather information and transmits it to the CPU.

For example, an internet connection for providing weather information and the like. As described above, the method of acquiring the weather information is the same as the conventional technology.

The navigation CPU then stores the weather information in its 'BUFFER1' (step 130).

In addition, 'WHETHER [X] [Y]' is generated by matching 'BUFFER1' with a pre-stored background screen (step 140).

That is, the weather information stored in 'BUFFER1' is matched with the pre-stored wallpaper, and the wallpaper information corresponding to the current weather is stored in 'WHETHER [X] [Y]'.

X and Y are screen resolutions. This means that the number of horizontal pixels is X and the number of vertical pixels is Y. The above X and Y represent pixel positions, and the values R, G, and B of WHETHER [X] [Y] represent color.

This is done on the graphics board. Too many operations to process in the CPU.

Subsequently, the signal of the light is calculated and stored as a value of 0 to 255 in the light LIGHT (step 150).

In other words, the light sensor detects the light and dark levels of the current time and stores the current brightness in the light. This process is done in the CPU. Here, the light LIGHT is a variable.

The light sensor is a device for converting the light intensity into an electrical signal (voltage). Then divide the light stage into 256 stages (8 powers of 2 = 8BIT). Here, 0 is a completely dark state with no light, 255 is a very bright ideal state where only light exists, and 1 to 254 are intermediate states.

It also calculates the wallpaper considering the brightness value.

For example, it is determined whether the measured light value is 128 (step 160).

If the condition of step 160 is satisfied, that is, if the write value is 128, NEW_WHETHER [X] [Y] = WHETHER [X] [Y] is set.

Here, NEW_WHETHER [X] [Y] is a matrix that contains background information regarding brightness.

Since the value of 128 is programmed by dividing the light stage into 256 stages as described above, 128, which is 1/2 of it, is set as an unchanged stage. This process is handled by the graphics board.

Then, the background display completion is transmitted to the CPU (step 180). That is, the graphics board processing result is informed to the CPU.

Then, perform the following operation. In other words, the loop is executed again after a predetermined period (step 190).

On the other hand, if the condition of step 160 is not satisfied, that is, if the write value is not 128, it is determined whether the write value is 128 or more.

If the condition of step 210 is satisfied, that is, if the write value is 128 or more, that is, if the write value is 129 or more, NEW_WHETHER [X] [Y] = f (WHETHER [X] [Y]) is set. Step 220)

Subsequently, the above-mentioned NEW_WHETHER [X] [Y] value is sprinkled on the screen (step 230).

Then, the process is performed again from the step 180.

In addition, when the condition of step 210 is not satisfied, that is, when the light value is not 128 or more, that is, when the light value is 127 or less, NEW_WHETHER [X] [Y] = g (WHETHER [X] [Y]). Set and repeat the operation from the step 180 (step 310).

Here, f (WHETHER [X] [Y]) and g (WHETHER [X] [Y]) described above are parts that can be controlled by a developer with a function.

This process is also handled by the graphics board.

As described above, the real-time background representation method of vehicle navigation according to the present invention is a method of realistically expressing a background screen without storing a picture by using pixel information (X, Y coordinate and RGB colors) of the LCD monitor.

As described above, the light sensor is used to determine the brightness, and the graphics board calculates each pixel RGB information for the optimal screen in consideration of the determined brightness signal and weather information to generate a screen. .

As described above, the real-time background representation method of the vehicle navigation according to the present invention has the following effects.

There is no need to save the picture, and the realism of the background expression can be secured and processed in real time.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a schematic flowchart sequentially showing a real-time background representation method of a vehicle navigation according to the present invention.

Claims (3)

(a) sending a signal at a predetermined cycle from a CPU of the vehicle navigation so that the communication module accesses weather information; (b) the communication module accessing a weather center to download necessary weather information and transmit it to the CPU; (c) the CPU storing weather information in 'BUFFER1'; (d) generating a 'WHETHER [X] [Y]' by matching weather information stored in the 'BUFFER1' with a previously stored background screen; (e) calculating a signal of light and storing the signal as 0-255 in the light; (f) calculating a background screen in consideration of the brightness value and determining whether the light value is 128; (g) setting NEW_WHETHER [X] [Y] = WHETHER [X] [Y] if the condition in step (f) is satisfied; and (h) transmitting the background display completion to the CPU. The method of claim 1, (i) if the condition in step (f) is not satisfied, determining whether the write value is 128 or more; (j) setting NEW_WHETHER [X] [Y] = f (WHETHER [X] [Y]) if the condition in step (i) is satisfied; (k) spraying the NEW_WHETHER [X] [Y] value completed through the step (j) on the screen, and performing the step (h); a real-time background of the vehicle navigation further comprising Expression method. The method of claim 2, If the condition in step (i) is not satisfied, setting NEW_WHETHER [X] [Y] = g (WHETHER [X] [Y]) and performing step (h). Real-time background representation of the vehicle navigation, characterized in that.