CONTROL DEVICE HAVING BUTTONS WITH AUTOMATICALLY ADJUSTABLE BACKLIGHTING

摘要

A control device may comprise a plurality of buttons, a plurality of light sources located behind the respective buttons and configured to illuminate the buttons, a light detector circuit configured to measure an ambient light level around the control device, and/or a control circuit configured to control the light sources to adjust surface illumination intensities of the respective buttons in response to the measured ambient light level. Each button may comprise indicia indicating a function of the button. The control circuit set the first button as active and the second button as inactive in response to an actuation of the first button. The control circuit may, based on the measured ambient light level, control the light sources to illuminate the first button to an active surface illumination intensity, and to illuminate the second button to an inactive surface illumination intensity that is less than the active surface illumination intensity.

主权项

1. A control device comprising:
a first button and a second button; a first light source configured to illuminate the first button, and a second light source configured to illuminate the second button; a light detector circuit configured to measure an ambient light level in a vicinity around the control device; and a control circuit configured to:
control the first light source to illuminate the first button to a first surface illumination intensity and control the second light source to illuminate the second button to a second surface illumination intensity, the second surface illumination intensity being less than the first surface illumination intensity; andadjust the first and second surface illumination intensities in response to the ambient light level measured by the light detector circuit.