Abstract: A protective cover for preventing damage from vehicle tires. The cover can comprise a strip of material adapted to be wrapped around a running surface of a tire, and to cover at least part of the tire side walls. In this case, the ends of the strip can be adapted to overlap and have complementary securing means capable of being secured on any relative position within a range defined by the lengthwise extent of the securing means on at least one end.

Abstract: A display system including a display device, a storage means having an array of storage locations each location being adapted to contain data representing a visual parameter of a different pixel of a picture to be displayed, and signal generating means for causing the display device to use the data to display a picture. the storage means is adapted to store data relating to a picture of a larger area than the picture displayed at any one time, the generating means incorporating means for altering the locations in the storage means which are addressed to produce the picture displayed in dependence on the required portion of the larger area picture which it is required to display.