Binary SignWriting
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Revision as of 11:02, 18 January 2010 by 207.32.43.33 (Talk)
Binary SignWriting is an encoding model for sign language data. It handles the specific requirements of a spatial script combined with the unique features of SignWriting.
Contents |
Status of the work
This document is a prerelease of version 2 of Binary SignWriting. Stable release with 2 version of character encoding: BSW and UTF-8.
Repertoire
| Name | Tokens | BSW Range | UTF-8 Range | Notes |
|---|---|---|---|---|
| 7 bit ASCII | A | 0000 - 00f7 | not currently used, but compatibility offers many advantages and no disadvantages. | |
| x-ISWA Control Characters | BQLR | 0080 - 00ff | Special control characters for SignWriting structures | |
| ISWA 2008 | wcPs | 0100 - f0ff | Valerie Sutton hand crafted, organized and named the ISWA 2008 as part of the Sutton-Slevinski collaboration. | |
| x-ISWA Number Characters | n | f100 - fffe | Number range -1919 thru 1919 as characters to avoid collision when parsing |
x-ISWA Control Characters
| Name | Token | BSW | UTF | Notes |
|---|---|---|---|---|
| SignBox | B | 0080 | A marker for a new canvas in the middle lane | |
| Sequence Marker | Q | 0081 | A marker for a sequence of writing and sorting symbols | |
| Left Lane SignBox | L | 0082 | A marker for a new canvas in the left lane | |
| Right Lane SignBox | R | 0083 | A marker for a new canvas in the right lane |
ISWA Token Ranges
| Name | Token | BSW Range | UTF Range | Notes |
|---|---|---|---|---|
| Writing symbols, non-centering | w | 0100-EBBF wo/B980-E61F; | A symbol used for spatial writing that is non-centering | |
| Centering symbols | c | B980-E61F | A type of writing symbol that takes precedence for the center of a spatial cluster | |
| Punctuation Symbols | P | EBC0-ED9F | A non-spatial symbol always used by itself in the middle lane | |
| Sorting symbols | s | EDA0-F09F | A non-spatial symbols that can only be used after the Sequence marker |
Structures
| Name | Description | Regular expression for token analysis |
|---|---|---|
| Cluster | SignBox marker with repeating spatial symbols, either writing or centering | [LBR]([wc]nn)* |
| Sequence | Sequence maker followed by one or more symbols, either writing, centering, or sorting | Q[wcs]+ |
| Punctuation | Punctuation is always used by itself | P |
| Sign | A cluster with an optional sequence, either left, middle, or right lane | [LBR]([wc]nn)*[Q[wcs]+] |
| SignText | A list of signs and punctuation | ([LBR]([wc]nn)*(Q[wcs]+)?|P)+ |
Other
Language Requirements
- Two way conversion between character code and symbol id.
- Access to glyphs - symbol image
- Creation of glyphograms - visual unit of spatially written glyphs
- Center estimate for glyphs and glyphograms
- Horizontal stacking of glyphs and glyphograms based on center
- Proper spacing between writing and punctuation
- Horizontal off center alignment for lanes
- Sorting based on sequence data, including special sorting symbols
- Searching for symbol, BaseSymbol, symbol combination, spatial arrangement, or exact sign match
- Drag and drop user interface
- Keyboarding user interface
- Special Commands for text entry
