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| Thread ID: 76527 | 2007-02-04 01:24:00 | cordless keyboard/mouse recomendations?? | tingle (6539) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 522494 | 2007-02-05 00:03:00 | I guess it recharges using the earth's magnetic field and is also psychic as it requires neither batteries or rf transmissions. Nah- let me guess, the cord's just so you don't loose it :thumbs: As Will Rogers said, "We're all ignorant, just about different things." From Wikipedia: Wacom tablets use a patented electromagnetic resonance technology. Since the tablet provides power to the pen through resonant coupling, no batteries or cords are required. As a result, there are no batteries inside the pen that will run down and need to be replaced, creating a long and virtually maintenance free lifespan. Under the tablet’s surface (or LCD in the case of the Cintiq) is a grid of wires that transmits a send and receive signal. In send mode, the tablet’s electromagnetic signal stimulates oscillation in the pen’s coil-and-capacitor circuit. In receive mode, the energy of the resonant circuit’s oscillations in the pen is detected by the tablet’s grid. This information is then analyzed by the computer to determine the pen’s position. In addition, the pen communicates other vital information, such as pressure-sensitivity, side-switch status, tip or eraser orientation and Tool ID. For example, applying more or less pressure to the tip of the pen changes the value of the pen’s timing circuit capacitor. This signal change is communicated to a modulator which distributes the information digitally to the tablet. The tablet forwards this and other relevant information (pen position, side-switch status, Tool ID, etc.) in packets, up to 200 times per second, to the computer. |
RealBigDog (11623) | ||
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