Abstract: A display system mounted on one or more sides of a public transportation vehicle (e.g., a bus). The display system is interfaced with a portable computing device (e.g., a personal data assistant), where the portable computing device provides updated messages to be displayed on a display panel. The display system includes at least one display panel mounted on one side of a bus, facing outwards such that the display panels may be readily seen when the bus goes around. The display panel is mainly for displaying messages provided by the portable computing device but also for displaying default messages in a local storage device.

Abstract: Techniques for displaying messages on top of a vehicle are disclosed. Although useful in many other areas, the techniques are particularly suitable for taxicab. According to one aspect of these techniques, a display unit is mounted on top of a vehicle. The display unit includes at least two display panels facing outward respectively. The display unit is controlled by a computing device to display various messages. In one embodiment, the vehicle is provided a Global Positioning System (GPS) that determines a location of the vehicle. Coupled to the GPS, the computing device sends the location information of the vehicle to a base station and receives returned information from the base station in accordance with the location information. The returned information, at least some of which are location based, is locally processed for suitable messages on the display panels. In another aspect, illumination of the display messages varies by a light sensor in response to intensity of ambient lights.

Abstract: Techniques for displaying three-dimensional photograph for a substantially enhanced three-dimensional visual result and clarity are disclosed. Although there are several ways to view a three-dimensional photograph, the invention herein provides a particularly thin, light weight, economical, long life, convenient, flexible, having uniform illumination with the right amount of back light suitable for viewing three-dimensional photographs and produces a substantially enhanced three-dimensional visual effect and clarity of the object or objects depicted in the three-dimensional photograph. According to one aspect of these techniques, an electroluminescent lighting for the back lit on the display panel is provided and energized either by battery, rechargeable battery or AC adapter. The display panel includes a lenticular sheet, a three-dimensional photograph and a back lit lighting source, specifically, an electroluminescent lighting sheet and an inverter energizing said lighting sheet.