Abstract: An orientation based, aspect-ratio switching video playback system selects from multiple video streams having corresponding content to automatically match the orientation of the device and play a version of the video filmed, produced and formatted for that orientation. Orientation changes may occur at any time during playback. When an orientation change is detected, the video playback system stores the current playback time, switches to the video stream optimized for the new orientation, and resumes playback from the stored playback time. Switching may be performed automatically and seamlessly to enable the viewer to continue watching the video in the new orientation, at the optimal aspect ratio for such orientation, using the full screen area without clipping any video content, and without interruption.

Abstract: An electrically powered sign is provided having a flat transparent sign display panel containing an alphanumeric sign message, a flat light source placed in close proximity, or directly affixed, to the sign display panel, a frame of varying configurations supporting the flat light source and the sign display such that the flat light source, when powered on, shines light through the sign display making the sign message visible in low light conditions, and a serviceable portable power source to provide electrical power to the flat light source, attached to the frame, whereby the electrically powered sign is self-contained and portable, and capable of being placed anywhere for displaying the sign displays alphanumeric sign message.