A few years ago, electronic magnifiers came in two simple categories: desktop and handheld. With the advent of flat-screen LCD displays and small digital cameras, there are now many portable options and a variety of new choices. You can still buy a full-sized desktop magnifier with an arm-mounted camera and x-y table, but you'll also find a number of foldable desktop units with different camera-mounting strategies and slimmer lines. Users looking for ultra-portability can choose from several devices that employ an Android tablet as both display and camera, making them easy to tuck into a laptop bag or backpack. Though the many products in these categories use a variety of components, provide different levels of magnification, and are certainly different in size and weight, they all aim to do what users with low-vision want most: make text or objects easier to see, and display magnified images on a large, bright display.
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Most new desktop video magnifier models boast that they offer high-definition (HD) quality. This can refer to the resolution of either the camera or the display, but both elements must support HD for this feature to be beneficial to a viewer. HD itself is an elusive term. HD specs are expressed in several ways, and there is no hard and fast rule for what constitutes HD. You will most often see HD resolution expressed in terms of video mode, as in 720p, 1080p, or higher. Full HD usually translates to 1080p. There are multiple ultra-HD video modes, too, with even greater video resolution. Vendors often adopt terminology that differentiates their own HD products from the competition, or even from other models in their own lineup. Low Vision International (LVI), for example, sells its MagniLink Zip magnifiers with either a 720p (HD) or 1080p (full HD) camera. All HD modes put more pixels on screen than does standard definition, allowing the camera to capture a sharper image, and the monitor to display one, too. This comes in handy at high magnification levels, when text or small objects under your camera could otherwise look fuzzy. Crisp text is also very important when you use custom color modes to enhance the contrast of the screen image. We'll have more to say about color modes later.
The competitive nature of the magnifier business has yielded at least one notable benefit for users: OCR is a feature or an option on most magnifiers, with many offering full-page scanning. You can zoom in to read text you've scanned, or have the text spoken to you immediately, if the device supports audio. If the magnifier has an SD card slot or connectivity via USB, you can also save scanned text to a file. Magnifier vendors usually add OCR to their products by licensing and integrating scanning software and voices into their devices. ABBYY and Nuance are the primary providers of OCR software. A few support OCR via a separate camera that connects to the device via USB. This is usually an option, not a standard feature.
The text-to-speech voice used by the Galaxy is the familiar Tom voice found in many screen reader packages. When I attempted to speed speech up past 100, I found that words were chopped off as I read product descriptions. I tried re-downloading the latest software update, and re-setting the unit to factory defaults, but I was unable to successfully speed up the speech rate. This isn't a deal breaker for me, as the default rate isn't terribly slow to my ear, but I would like to see this problem resolved.
Fold the keyboard back, however, and you discover the sort of innovation that Humanware is famous for. Simply rest all ten fingers on the touch screen of the tablet, receive a short vibration letting you know that your fingers have been properly calibrated, and you can immediately start typing using TouchBraille. Humanware suggests that you gently rest your wrists on the front of the braille display, and gently move your fingers up and down on the glass surface of the tablet when typing. Greg Stilson suggests that 20 minutes a day is a good target for really becoming proficient with TouchBraille. Among many of the other "earcons," or notification sounds provided by Google to help a blind person navigate their devices more efficiently, are clicks that alert the typist when a letter has been successfully entered onto the screen. In addition, all the expected feedback including character and word echo are available. As the typist becomes increasingly comfortable using TouchBraille, some or all of these sounds and spoken prompts can be disabled. Stilson uses TouchBraille almost exclusively these days, but finds that sometimes the key click notification can help him make certain that information is being correctly entered on the screen. It is also possible for the typist to leave one hand on the surface of the tablet, while quickly checking their work on the braille display with the other hand. After glancing at the display, it is a simple matter of placing the left hand back on the screen where one can easily recalibrate their hand position and continue typing. In fact, because calibration is so easy, frequent recalibration is recommended in order to minimize the effect of the gradual mis-alignment of hand position that inevitably occurs when typing in braille on any touch-screen surface.
The BrailleNote Touch comes with an onboard user guide in the form of a Web page that is easily navigated. In addition to the full user guide, context-sensitive help is available from anywhere you happen to be working. Finally, Mystic Access has provided a free and very comprehensive tutorial on using the BrailleNote Touch. It is possible for anyone interested in learning more about the tablet to download the tutorial free of charge either in DAISY or MP3 format. Anyone familiar with any of the other tutorials created by Mystic Access will appreciate the thorough, engaging style that is the hallmark of all of their tutorials. 2ff7e9595c
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