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Re: edit of profiles draft

From: Harvey Bingham <hbingham@acm.org>
Date: Wed, 20 Oct 1999 22:31:49 -0400
Message-Id: <>
To: WAI-EO <w3c-wai-eo@w3.org>
*At 1999-10-15 02:08 AM-0400, Judy Brewer wrote:
>Thanks for the comments Jim!
> >=== Rewrite
> >
> >Braille and refreshable braille
> >Braille is a technique involving six or eight dots that are raised in
> >different patterns to represent letters and numbers so that they may be read
> >by people who are blind using their fingertips. Braille systems vary greatly
> >around the world. Some "grades" of braille include additional codes beyond
> >standard alpha-numeric characters, to represent common letter groupings
> >(e.g., "th," "ble" in Grade II American English braille) to make braille
> >more compact. An 8-dot version of braille has been developed to allow all
> >ASCII characters to be represented. Dynamic or refreshable braille involves
> >the use of a mechanical display where dots can be raised and lowered
> >dynamically to allow any braille symbols to be displayed. Only letters and
> >numbers can be represented in braille, although some braille printers have
> >the ability to emboss simple graphics  using the raised dots at a resolution
> >of approximately 11 dots per inch.
> >Screen magnifiers

For consistency, add colon after magnifiers, or remove from both
subheads below.

> >Software used primarily by individuals with low vision that magnifies a
> >portion of the screen for easier viewing. Note that at the same time screen
> >magnifiers make presentations larger, they also reduce the area of the
> >document that may be viewed on the monitor. Some screen magnifiers therefore
> >offer two views of the screen: one magnified and one default size for
> >navigation.

We should add a category on

Font enlargers:
Capability of some browsers to allow the user to enlarge the display font,
and re-wrap lines to fit the display window. In contrast to a screen
magnifier, this re-wrapping usually avoids the need to scroll in the
writing direction, so often proves more effective for low-vision users,
unless the source is in an inaccessible image file format.

> >Screen readers:
> >Software used by individuals who are blind or have learning disabilities
> >that interprets what is displayed on a screen, and directs it either to a
> >speech synthesizer, for audio output, or a refreshable braille display, for
> >tactile output. Some screen readers use the document tree (i.e., the parsed
> >document) as their input. However, older screen readers make use of the
> >rendered version of a document, meaning that document order or structure may
> >be lost (e.g., when tables are used for layout) and their output may be
> >confusing.

Do some of these need to do pattern matching and OCR on the pixel image
read from the actual screen image? Or do they intercept text before it
gets into the screen image generation?
> >
> >Jim Allan, Statewide Technical Support Specialist
> >Texas School for the Blind and Visually Impaired
> >1100 W. 45th St., Austin, Texas 78756
> >voice 512.206.9315    fax: 512.206.9453  http://www.tsbvi.edu/
> >"We shape our tools and thereafter our tools shape us." McLuhan, 1964
> >
>Judy Brewer    jbrewer@w3.org    +1.617.258.9741    http://www.w3.org/WAI
>Director, Web Accessibility Initiative (WAI) International Program Office
>World Wide Web Consortium (W3C)
>MIT/LCS Room NE43-355, 545 Technology Square, Cambridge, MA,  02139,  USA
Regards/Harvey Bingham
Received on Thursday, 21 October 1999 01:00:07 UTC

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