Mobile telephone for communication has keyboard on first plate and further keys on second plate, hidden from view until top plate is rotated on pivot through 90 degrees

摘要

The end station has a first plate (1) pivoting on a second rectangular plate of the same size. The first plate has a display system, a loudspeaker and a keyboard. A swiveling joint at the center allows the first plate to turn relative to the second plate. Normally the first plate covers the second plate. When the plates are aligned at 90 degrees to each other, extra keyboards on the second plate are uncovered.