Apple Inc.

Peter K Edberg

John I McConnell

Andrew Michael Daniels

Yung-Fong Frank Tang

Julio Amable Gonzalez

Techniques to converting source text (e.g., Unicode text) to multiple different encodings are disclosed. The disclosed techniques operate without any font or style information that could suggest the original encoding types. For a given source text, the techniques intelligently determine which of a variety of available target encodings are most appropriate. The determination of the most appropriate target encodings is flexible enough to accommodate different criteria or tolerance levels in performing the conversion as may be desired. The conversion out of Unicode into multiple different encodings also requires the determination of where and when to switch between the available target encodings. Also disclosed is a technique to automatically identify those target encoding that are available.

Unicode conversion into multiple encodings

According to the system and method disclosed herein, the present invention provides a system and method for organizing information to perform accurate and efficient collation for information such as languages of various nationalities and regions. This invention provides a number of improvements over the existing string comparison routines: portability, improved performance, ability to handle Unicode, and improved linguistic capability.

Method and system for collation in a processing system of a variety of

A character code conversion system that provides round trip fidelity, while ensuring that the resulting character codes are interchangeable with other platforms. The code conversion system is able to map a single source character or a sequence of characters to either a single target character or a sequence of target characters. With round trip fidelity, source text can be converted to target text and then back again to the original source text. The interchangability is ensured by maximizing the use of standard target characters, and by minimizing the use of private characters. The code conversion is particularly useful for converting to/from Unicode characters from/to other character sets.

Unicode converter

A code conversion system that takes direction into consideration when converting characters from a source character encoding to a target character encoding is disclosed. The code conversion system is able to map a single source character or a sequence of characters to either a single target character or a sequence of target characters. By determining or resolving the direction of the characters being converted, the code conversion system can then utilize the determined or resolved direction of the characters to ensure that the correct mapping to the target character encoding is obtained.

Bidirectional code converter

A code conversion system that takes context into consideration when converting characters from a source character encoding to a target character encoding. The code conversion system is able to map a single source character or a sequence of characters to either a single target character or a sequence of target characters. By determining the context of the characters, the code conversion system can then utilize the determined context of the characters to ensure that the correct mapping to the target encoding is obtained.

Context-based code convertor

A truncation technique for a character code conversion system is disclosed. The truncation technique ensures that a source string received for conversion is accurately converted into a different, target character encoding even when the source string exceeds the length of an input buffer which holds the source string for conversion. The truncation processing technique operates to truncate a portion of the source string held in the input buffer so that the truncated portion is able to be converted to the target character encoding without being affected by subsequent characters in the source string.

Growing community of inventors

Eugene, OR, United States of America

Peter K Edberg