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Touch adjustable keyboard Disclosure Number: IPCOM000030212D
Original Publication Date: 2004-Aug-02
Included in the Prior Art Database: 2004-Aug-02
Document File: 2 page(s) / 44K

Publishing Venue



Actually for mechanical PC keyboards there is no way to select the power needed to push down a key in order to select a character. This will imply that the keyboard user should control his strength when typing: a strong man hand is different from a thin lady hand. Moreover thinking to little childes, this will be more impacting: little hands and fingers with different low strengths. Having a keyboard where the strength needed to hit and select a key is easily customizable would solve the problem.

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Touch adjustable keyboard

Disclosed is a way to implement a keyboard device where the strength needed to hit and select a key could be customizable and user defined. Actually under the keyboard keys there are springs and switches that handle the hit and the keyboard selection. The reaction of the key is actually based on the mechanical reaction of the spring used and it is not user selectable. By adding under the keys a couple of devices constituted by a little electro-magnet and a magnet with the same polarization (as shown in Figure 1), a resistance to the key pushing could be created. It can be increased or decreased, based on the current creating the magnetic field of the electro-magnet: more current, more strength would be needed to push the key. A "soft" spring that will allow the selection with a soft touch, could be considered as base selection, when no current is creating the magnetic field of the electro-magnet. Increasing the circulating electrical current inside the electro-magnet, the resistance of the keys to pushing, will increase accordingly. As extreme situation it could be completely avoided the key pushing, and this could be used as hardware keyboard lock. The set up of the device can be performed via software and there could be a simulation panel (as shown in Figure 2) that could help to select the proper setting for each PC user, or could be performed in Hardware by using a potenziometer device.

The user selection can be stored and associated...