D. Kerr et al. (Apple), "Active enclosure for computing device," US20040156192A1, August 12, 2004.
Abstract: A computing device is disclosed. The computing device includes a housing having an illuminable portion. The computing device also includes a light device disposed inside the housing. The light device is configured to illuminate the illuminable portion.
Exemplary Claim: A computing device, comprising: a housing for enclosing various internal components associated with the operation of the computing device; and an indicator assembly for indicating events associated with the computing device, the indicator assembly being configured to produce an indicator image at an outer surface of the housing when activated, and to eliminate the indicator image from the outer surface of the housing when deactivated.