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Smart Pens Help Blind See

Industrial Technologists Design Smart Pen to Record what it Writes and Hears

May 1, 2008

Psychoacoustics researchers and industrial technologists use a pen computer to assist visually impaired students to learn science and math. The pen writes in ink, but when used on paper printed with a special pattern of dots, its mounted camera records the movement, which can be downloaded to a computer. The camera can match the location on the paper with the time at which the audio was recorded to facilitate a narrated trip through a student's notes.

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HOW DOES IT WORK? The Smartpen is a pen and a computer that allows users to write, record audio, record what is written, and access that information in a unique way. Covering paper with a pattern of dots makes each location unique and recognizable by a tiny camera mounted in the pen. If reviewing notes taken during a lecture, a student could find a diagram he had made, then command the pen to play back what had been said while he was drawing that diagram. Because of the special paper, the camera is able to read where it is on the page and find the corresponding spot in the audio, making it easy to play it back.

AN AUDIO-TACTILE DISPLAY: Using the smart pen with a raised line drawing kit allows visually impaired and blind people a chance to interact with the diagrams and pictures so vital to learning science and math concepts. With the Smartpen, students can print dots onto thin plastic sheets that are used with a pad that creates a raised line when written on with a pen. A teacher could explain a concept while writing the accompanying diagrams on the pad, and then hand the pad and smart pen to the student. The student would then be able to touch the pad, tap the pen in a spot, and in an on-demand fashion, listen to the teacherýs explanation.

The Institute of Electrical and Electronics Engineers, Inc., contributed to the information contained in the TV portion of this report

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