A display device of the present invention includes: a first display unit that displays an image in a first display mode; a second display unit that displays an image in a second display mode different from the first display mode; and a control unit that controls operations of the first display unit, and the second display unit in accordance with a preset control condition.

A portable net system for net games is disclosed which provides for rapid assembly, lightweight construction, durability against damage while assembling and playing, and also provides enhancements inherent in the design which allow for improved marketing and advertising during tournaments. The net functions through having a bow-shaped tensioning rod reacting against the net top-tape to provide primary shape, net tension and height control. A vertical post at each distal end is attached to the foldable feet to provide lateral stability, and these are attached to the net via insertion into the net end-band and durably connected via the rigid bow end-connectors. Removable end-panels at each end net termination provides for a self-tensioned surface where advertising and sponsor labels may be attached.

A portable net system for net games is disclosed which provides for rapid assembly, lightweight construction, durability against damage while assembling and playing, and also provides enhancements inherent in the design which allow for improved marketing and advertising during tournaments. The net functions through having a bow-shaped tensioning rod reacting against the net top-tape to provide primary shape, net tension and height control. A vertical post at each distal end is attached to the foldable feet to provide lateral stability, and these are attached to the net via insertion into the net end-band and durably connected via the rigid bow end-connectors. Removable end-panels at each end net termination provides for a self-tensioned surface where advertising and sponsor labels may be attached.