Abstract: A preferred embodiment of the present invention is a mobile sign with a solar panel for warning motorists of highway problems. The mobile sign comprises support structure configured as a wheeled vehicle. In preferred embodiments, the sign panel comprises an enclosure or housing having a front transparent panel, a multiplicity of LED's in a matrixical arrangement for generating electronically changeable messages mounted in the enclosure and spaced from the front panel, and a pattern of opaque material, for example paint, applied on the exterior of the front transparent panel defining a plurality of windows for passing light therethrough. In a preferred embodiment, the windows will be in a matrixical arrangement comprising a plurality of rows and columns of individual LED's or rows and columns of groupings of LEDs.

Abstract: Preferred embodiments of the present invention provide a sign system for creating extremely lightweight, reconfigurable, and changeable signs suitable for outdoor use adjacent to roadways. The system provides adjustable message screen size, electronically changeable messages and alphanumeric adjustable character size of at least 6 inches in height. The system comprises a sign controller and a plurality of interchangeable modules each sealed to be weather resistant. Each module having a display side with a rectangular screen portion, the screen portion having transparent portions with pixel elements positioned behind the transparent portions and within the module. Each module has the pixels arranged in a first matrix pattern and sufficient in number to provide alphanumeric characters and portions of characters of adjustable size of at least 6 inches. Each module having a bit map memory and being individually addressable with respect to other modules.

Abstract: A pan/tilt device consists of a pan motor and a tilt motor on a motor mount structure, a camera mount structure rotatable by the pan motor about the pan axis, a camera bracket on the camera mount structure rotatable by the tilt motor along the tilt axis. A pair of concentric drive shafts extend from the motor mount structure to the camera mount structure to accomplish the pan and tilt functions. The pan/tilt device is capable of remote operation over a computer network.