| 摘要 |
<p>An optical user-input device comprises a photo-emitter 406 illuminating a sensing volume and a SPAD (Single Photon Avalanche Diode) photo-detector array 404 detecting reflected photons. The user-input device may find application in telephones, computers and other electronic devices. In a music controller, movement of a user s finger in X, Y and Z directions may control bass, treble and volume respectively. Unreliable mechanical controls such as dials, buttons, faders, knobs and switches may be avoided.</p> |
