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Breath driven keyboard Disclosure Number: IPCOM000030136D
Original Publication Date: 2004-Jul-29
Included in the Prior Art Database: 2004-Jul-29
Document File: 2 page(s) / 52K

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Breath driven keyboard Unfortunately, persons with hands disability handicaps or with problems in the coordination of the arm movements could have problems in handling a normal keyboard or cannot use it at all. The proposal is to use a breath driven device to simulate the keyboard.

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Breath driven keyboard

The idea is to provide a simulated keyboard that is driven by the breath. Disclosed is a device transforming the breath in key hits on the software-simulated keyboard. The implementation of the device is shown in Figure 1.

Fig. 1

By Inflating or aspirating air in the device, one switch or the other will be selected by the motion of the diaphragm. This will be the input for the simulated keyboard. For example, by inflating in the device the cursor will move on the right and by aspirating, on the left (as shown in Figure 2)

Fig 2

Once the needed letter is positioned, inflating twice it will be selected; by aspirating twice it will be deselected.

Beside the letters, special functions and menus could be selected like: capital letters, numbers, chars, symbols, all options, and so on, to facilitate the selection: once the specific function has been selected on the menu, only the corresponding enabled values are displayed on the simulated keyboard. An example is shown in Figure 3.

Fig. 3


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The simulated keyboard can be on the normal screen or in a separate secondary device complementary to the monitor. A special customisable breath code could be used to activate/deactivate the function. Also the diaphragm reaction could be customisable by using a variable resistance spring, and also the time needed to select/deselect, and the frequency of the double inflate could be selectable a...