As part of the proposals put to the BBC Trust, the Project Canvas partners have made explicit commitments around accessibility and are fully committed to supporting a widening range of accessibility features.
Above all, by providing an accessibility framework rather than a fixed solution, Canvas can respond to the development of new accessibility solutions without the need for a new set-top box. Since no-one can predict exactly how IPTV will evolve, building a flexible platform is of paramount importance.
Throughout the development process, the Canvas partners have talked with a wide range of organisations representing audiences with accessibility issues, including the RNIB, RNID, Scope, Age UK and Mencap, alongside many others.
One of the key issues to emerge from these discussions was the need for greater clarity about the accessibility features Canvas will support. The FAQ below seeks to address some of the key questions.
Meanwhile, further information on the guiding principles behind Canvas accessibility, and which features will be included at launch, can be found at www.projectcanvas.info/accessibility.
If you have any other questions, please email accessibility@projectcanvas.info.
CANVAS ACCESSIBILITY FAQ
What kind of accessibility features will Canvas support?
There are three main classes of accessibility features:
1.TV Access Services: Canvas will support the delivery of access services (Audio Description and Subtitles) for TV, High Definition (HD) TV and Video on Demand (VOD).
2. The Canvas interface has been designed to be as accessible as possible and includes various accessibility features such as:
- A zoom magnifier to increase the size of the user interface
- The ability to change colour schemes
- An alternative list view of the schedule, rather than a grid
- Audio feedback (e.g. a sound when a button is pressed or function selected)
- Functionality which stops distracting background movement.
3. The Canvas set-top box will be able to connect to devices, such as PC keyboards, laptops, smart phones or assistive technologies. This will be achieved using a variety of methods from physical connections via a USB port to using the home network (depending on the set-top box used). Please note: to enable devices and or assistive technology to work, third party development may be required – please see Working with manufacturers below.
Subtitles and Audio Description
Will I be able to get subtitles or audio description on TV programmes and video on demand?
Yes - you will be able to access them where they are provided on the programmes themselves.
Will I be able to switch subtitles or audio description on and off from the remote control?
Yes. There will be dedicated subtitle and audio description on/off buttons on every Canvas remote control.
When I have switched subtitles or audio description on, will they stay on regardless of channel or interactive service I use?
Yes.
Will I be able to get subtitles on interactive services e.g. via the red button?
Canvas itself is neither a broadcast, on-demand nor interactive service provider. The inclusion of subtitles on interactive services is up to the content provider. If they are included, Canvas has been designed to support them.
How will I know whether a programme has subtitles, audio description or BSL?
This will be identified through the Electronic Programme Guide (EPG). The EPG includes the information on access services for every programme that provides them. If the audio feedback facility is switched on, it will alert the user to the availability of Audio Description on a specific programme. This is the same audio feedback model developed by the Digital Switchover Help Scheme.
If I record a programme, will it automatically record any subtitles, audio description or BSL?
Yes, for subtitles and audio description on broadcast services. However BSL content is broadcast as a different programme instead of as an addition to the original programme, so it will have to be recorded separately.
Sound
I like to have the TV volume set louder than other members of my family. Will I be able to use a headset that will provide me with a different volume level? Will I be able to change the sound quality / tone as well as the volume?
This may be a feature on some Canvas set-top-boxes. However, as additional devices such as DVD/Blu-Ray players, gaming consoles or even PCs can be connected to a TV, this would be best and most conveniently achieved through the TV’s phono socket. The same goes if you want to connect an inductive loop.
If, in the future, a broadcaster provides a programme without background sound (clean audio) will I be able to watch it via Canvas without the background sound?
Canvas has been designed to be flexible enough to accommodate future services if and when they become available.
Sign language
Will I be able to get programmes and video on demand that have BSL provided?
Yes, you will if they are provided by the video on demand content provider or TV broadcast channel.
Text-to-speech (TTS)
Will a simple text to speech facility be provided with the set top box so it talks to me?
Because Canvas is an accessible framework, it could support text to speech (TTS) in two ways.
The development and inclusion of an accessibility Application Programming Interface (API) - or, put more simply, a set of rules that allow one device to talk to another - will provide the opportunity for the development of accessible alternative user interfaces that run on existing TTS supported connected devices, such as smart phones or laptops.
Alternatively, the same API will also give manufacturers the opportunity to develop and integrate TTS functionality within Canvas devices.
Will I be able to connect into Canvas my devices that are already text to speech enabled?
As described above, the Canvas team are developing an API for this purpose. The API specification is also looking beyond this and in the future could support many different accessible interfaces such, as touch screen tablet PCs, switch interfaces, breath control and so on.
User interface & experience
What is being done to make the user experience as simple as possible so that people are not overwhelmed by choices and options?
The interface has been designed to be as simple as possible using a grid style programme guide. Project Canvas has developed an alternative simpler list view of the guide which the user can choose instead if preferred.
Will Canvas make use of pictures and icons to make it easy to understand and simple to use?
Where possible, yes.
What colour schemes are being provided and will I be able to tailor them to suit my needs?
The Canvas interface has been designed to be highly visible. However if the contrast is not enough or if you require an interface in a specific colour because, for instance, you have visual dyslexia, Canvas will be launching alternative colour schemes which users will be able to switch to. These will be provided within the user preferences menu.
What typeface is being used and why was this one chosen?
Canvas has adopted an accessible typeface, FS Me, which was developed by Mencap for optimum legibility and readability.
What if the text in the Canvas interface is not big enough for me to read?
Canvas will provide a zoom feature as standard which will have a dedicated button on the remote control.
Working with manufacturers
Is Canvas willing to share its standards with third parties?
Yes. Canvas will also continue to develop new accessibility features in partnership with representative groups and platform partners such as the BBC and BT. All such requests should be emailed to accessibility@projectcanvas.info.