Method for conversion mode selection in hangeul to hanja character conversion

• US 5,742,838 A
• Filed: 10/13/1993
• Issued: 04/21/1998
• Est. Priority Date: 10/13/1993
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Wu, Victor, Rho, Kyu Y., Lim, Chan S.
• Primary Examiner(s): Harvey, Jack B.
• Assistant Examiner(s): Lefkowitz, Sumati
• Application Number:
  US08/136,431
• Time in Patent Office: 1,651 Days
• Field of Search: 364/419.01, 364/419.02, 364/419.04, 364/419.05, 364/419.09
• US Class Current: 715/264
• CPC Class Codes: G06F 40/53 Processing of non-Latin text kana-to-kanji conversion G06F40/129; vowelisation G06F40/232

Abstract

A system and method for converting Hangeul characters to Hanja characters in the Korean language. The method and system permit the user to select the conversion mode as either a character mode or a word based mode to provide flexible and accurate conversion operations.

Claims

1. In a data processing system having a central processor (CPU), a display means, input means, and a memory, a method of steps, effective in said data processing system, for selected conversion of Hangeul characters to Hanja characters found in a structured document which includes Hangeul phrases and Hanja phrases comprising steps for:

inputting and accumulating multiple Hangeul characters from said structured document into said memory of said data processing system;

selecting a conversion mode for converting Hangeul characters to Hanja characters, said conversion mode being chosen from word conversion and character conversion in said data processing system;

responsive to said selecting step, if said selected conversion mode is said character mode, performing in said CPU a table lookup operation in a conversion table in said memory of said data processing system for converting from Hangeul characters to Hanja characters, said table lookup being performed for each consecutive Hangeul character inputted to said data processing system, and retrieving by said CPU for use or display a corresponding Hanja character from said conversion table; and

responsive to said selecting step, if said selected conversion mode is said word conversion mode, then locating with said CPU a first delimiter and a second delimiter in said input of Hangeul characters, and performing by said CPU a table lookup in said conversion table in said memory for converting Hangeul words to Hanja characters using, for said conversion, the said Hangeul characters located between said first and said second delimiter, and retrieving by said CPU for use or display the corresponding Hanja characters from said conversion table, constructing in said memory of said data processing system, a text node which includes an indication of the conversion mode selected.

2. The method of claim 1 which said constructing of a text node further comprises including in said text node an indication of a single byte character set or a double byte character set.

3. A conversion tool, for use in a data processing system which includes a processor, memory, input means and a display, for selected conversion of Hangeul characters to Hanja characters found in a structured document which includes Hangeul phrases and Hanja phrases, said tool comprising:

means effective in said processor of said data processing system for accumulating in said memory of said data processing system multiple Hangeul characters;

means effective in said processor of said data processing system for selecting a conversion mode of operation by said processor from word conversion and character conversion of Hangeul characters to Hanja characters;

first table lookup means operable in said processor in response to selection of said conversion mode being said character mode, for performing, for each consecutive Hangeul character, a table lookup operation in a table in said memory, and reporting to said processor a corresponding Hanja character from said table; and

second table lookup means effective in said processor in response to selection of said conversion mode being said word conversion mode, for locating a first delimiter and a second delimiter in said Hangeul characters and performing with the said Hangeul characters located between said first and said second delimiter, a table lookup operation in said memory, and reporting to said processor the corresponding Hanja characters from said table, and means for constructing in said memory of said data processing system a text node which includes an indication of the conversion mode selected.

4. The system of claim 3 which further comprises:

means for constructing a text node which includes an indication of DBCS or SBCS characters.