| 摘要 |
<p>A switch panel 10 comprises a layer 102 having a touch or proximity responsive surface and being patterned to indicate defined switch areas of the surface to a user. Illumination means 110 illuminate the patterned layer, and output means provide an output signal in response to a user interaction with one or more of the defined switch areas. The switch panel is arranged to operate in an active state, in which the illumination means are arranged to illuminate the patterned layer so as to make the switch areas visible to the user, and a dormant state, in which the switch areas are substantially not visible to the user. The output means are arranged to provide the output signal only when the switch areas are visible in the active state. The switch panel may be arranged as a computer keyboard. The illumination means may comprise a backlight. The output signal may be provided to a computer wirelessly. The switch panel may be integrated into a surface of a desk, vehicle seat-back or tray. The switch panel is therefore effectively secret until lit up.</p> |
