KR20040033718A - Color short message transmission method - Google Patents

Abstract

PURPOSE: A method for transmitting a color short message is provided to unite all of English/Korean alphabets and numbers based on 4-bit color information and 12-bit character information, and to write a color short message, thereby transmitting colored characters as minimizing loss of maximum transmission characters. CONSTITUTION: A mobile communication terminal converts 16-bit Korean codes into 12-bit character codes by using a conversion table. The mobile communication terminal further includes 4-bit color information codes in the 12-bit Korean codes, generates 2-byte color characters, and transmits the 2-byte color characters. The mobile communication terminal separates the color information codes by receiving the 2-byte color characters, and converts the 12-bit character codes into the 16-bit Korean codes by using the conversion table. The mobile communication terminal displays Korean alphabet or ASCII characters on a screen by the color information.

Description

How to send a color short message {COLOR SHORT MESSAGE TRANSMISSION METHOD}

The present invention relates to a method for transmitting a color short message, and more particularly, to a method for transmitting a color short message in a color mobile communication terminal to colorize a text while minimizing a maximum loss of a text message when transmitting a short message (SMS).

In general, the size of user data when receiving / outgoing a short message service (SMS) is different for each service provider, but it is about 1 to 80 bytes, and various parameters are attached to the terminal up to 64 to 192 bytes. Is stored in NV (Non Volatile) memory (recorded in units of 64 bytes) and up to 64 to 128 bytes when outgoing.

In the case of the conventional short message, all of the monochromatic text is 80 bytes, but the color short message is not yet implemented. However, some operators have announced the specification of the color short message. This will be described with reference to the accompanying drawings.

First, FIG. 1 is a table showing a standard color short message. The first 4 bits indicate information of a protocol revision of a terminal and are used as identifiers of the terminal.

The next four bits are the part defining the entire background color of the color short message (Color SMS), and the definition value is as shown in FIG. The initial use will determine the overall background color.

The next 1 byte indicates the total length of the message user data, and after that, the part (OC: Option Code) (1 byte) and the color (4 bits) and attribute information (4 bits) are stored for each character. And a portion (1 byte) in which the length information of the character to which the attribute is specified are stored (1 byte) and a portion (Char) (2 bytes) in which the character data are stored are successively stored as many as the number of characters created in the short message.

2 is a table showing a background color code in a standard color short message, FIG. 3 is a table showing a foreground color code in a standard color short message, and FIG. 4 is a table of a conventional color short message. This table shows the code that specifies the attributes.

For example, FIG. 1 is a color short message when the entire background color is set to white and a short message called 'SK Telecom Co., Ltd.' is set to different attributes / colors for each character. With 2 bytes of overhead, every character can be colored with only 19 characters (3 + (2 + 2) * 19 = 79 bytes), so the maximum number of transmitted characters is monochromatic. There is a limit of 50% reduction.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and transmits a color short message to colorize a text while minimizing a maximum loss of text when transmitting a short message (SMS) in a color mobile communication terminal. The purpose is to provide a method.

The present invention for achieving the above object comprises the steps of converting a 16-bit Hangul code into a 12-bit character code using a conversion table; Generating a two-byte color character by further including a four-bit color information code in the 12-bit Hangul code; Receiving the two-byte color characters to separate color information codes, and converting the 12-bit character codes into 16-bit Korean codes using a conversion table; Characterized in that the display of the Hangul or ASCII characters on the screen by the color information.

1 is a table showing the specification of a conventional color short message.

2 is a table showing a background color code in a standard color short message specification.

3 is a table showing a foreground color code in the specification of a conventional color short message.

4 is a table showing a code designating an attribute in a standard color short message specification.

5 is a flow chart showing a short message transmission process according to the present invention.

6 and a code table for a typical complete Hangul character.

7 is a code table for common ASCII and special characters.

8 is an exemplary diagram of mapping a complete Hangul code into a 12-bit conversion table according to the present invention.

The present invention relates to a method for colorizing characters (16 colors) while minimizing the loss of the maximum transmitted character compared to conventional monochromatic short messages. In addition, it adds 40 numbers (80 bytes) in color text messages.

In other words, the present invention represents a color character in 16 bits by adding the attribute code of 4 bits per character of the short message and the 12 bit character code in the conversion table.

The number of characters that can represent the 12-bit character code is 2 ^ 12 = 4096, and each complete Hangul 2232, 256 ASCII characters and other special characters are mapped and used in the conversion table.

That is, two bytes are allocated for one character, and even if all the colors are different for all characters, 40 characters can be transmitted.

FIG. 5 is a flowchart illustrating a short message transmission process according to the present invention. When a sending user creates a short message (SMS) by specifying a color for each input character, the short messages are shown in FIGS. 7 and 8. Each character is encoded and transmitted by a conversion table as shown.

Then, the receiving side similarly decodes each character using the conversion table and displays a short message on the screen.

6 and 7 are code tables for general complete Hangul 2232 characters and 256 ASCII characters and other special characters, respectively. FIG. 6 shows 16-bit codes 'BOA1' for Complete Hangul 2232 characters. A code table up to 'C8FF', and FIG. 7 is a code table of general ASCII characters and special characters.

FIG. 8 is an exemplary diagram in which a complete Hangul code is mapped to a 12-bit conversion table according to the present invention, in which 0 to 255 decimal numbers correspond to 256 ASCII codes in order, and 256 times thereafter (decimal). To 2488 (decimal), if the complete Hangul code of FIG. 6 is converted into a decimal number corresponding to the sequential number, the original Hangul code is 16 bits, but as described above, the maximum number 2488 corresponding to the conversion table can be represented as 12 bits. Do.

Therefore, adding four more bits of information representing color to each other enables colorization of each character within two bytes. Of course, four bits of color information bits may be divided to designate color information and attribute information two bits each. This is because there may be many cases in which the color of a few letters is differently colored or blinked for emphasis in the whole short message, but the case of specifying each letter differently is extremely limited.

Next, a short message creation process using the conversion table will be described with reference to FIG. For example, in the case of creating a short message 'each of each' by the method according to the present invention, the Hangul Completion (KSC-5601) code for each character becomes 'BOA1', 'BOA2', and 'BOA3' sequentially. In the conversion table of the present invention, since each ASCII code is set to correspond to ASCII code (0 ~ 255) after (256), the decimal number is '256', '257', and '258'. When converted to decimal, it becomes 12 bits of '0x100', '0x101', and '0x102'. In addition, by including 4 bits of color information, it is possible to create a color short message in 16 bits (2 bytes).

Of course, 256 ASCII characters including special characters can be represented by 12 bits, so if each character is assigned a color, 40 characters can be written in short message within 80 bytes.

As described above, the method for transmitting a color short message of the present invention has the effect of colorizing a text while minimizing a maximum loss of a text when transmitting a short message (SMS) in a color mobile communication terminal.

Claims (3)

In writing a short message using ASCII code including special characters and complete Hangul code, Converting 16-bit Korean code into 12-bit character code using a conversion table; Generating a two-byte color character by further including a four-bit color information code in the 12-bit Hangul code; Receiving the two-byte color characters to separate color information codes, and converting the 12-bit character codes into 16-bit Korean codes using a conversion table; And displaying Korean or ASCII characters on the screen according to the color information. The conversion table of the conversion table corresponds to ASCII codes including special characters from decimal 0 to 255 in order, and converts to decimal by mapping corresponding Korean characters in sequence sequentially from 256 to 2488. A color short message transmission method comprising converting a 12-bit hexadecimal number to correspond. The method of claim 1, wherein the four-bit color information code is divided into two bits and allocated as color information and attribute information.