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The dot pattern identifies the specific page and locations on the page of the notes
you write. The Pulse smartpen uses the dot pattern in a way similar to a
geographical positioning system (GPS). But, instead of identifying locations on land,
it finds locations on paper and stores your writing as digital ink using those locations.
Using this patented dot-positioning system (DPS), the Pulse smartpen precisely
tracks its own movement on paper. As a result, anything you write – words, numbers
or drawings – can be stored, recognized, and intelligently responded to.
The area of the entire Anoto dot pattern is huge, and represents a piece of paper the
combined size of Europe and Asia. Livescribe dot paper is based on a subset of the
entire Anoto dot pattern.
How the Pulse Smartpen Works
When you power on the Pulse smartpen and begin writing on Livescribe paper, the
Pulse smartpen captures and stores the notes you write. To capture your writing, the
Pulse smartpen uses its built-in infrared camera to take digital snapshots of the dot
pattern as the tip moves over the paper as you write.
When recording audio in Paper Replay, the Pulse smartpen links the recorded audio
to your notes based on the dot pattern on the page. With this information, the Pulse
smartpen can play back the audio that was recorded at the exact time you were
writing your notes. Specifically, when you tap on your notes with the Pulse
smartpen, it locates the position where you are tapping and starts to play back the
audio at the position linked to that paper location.
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