KEYBOARD UNIT FOR MOBILE STATION Russian patent published in 2007 - IPC H04B1/03 H04Q7/32 

FIELD: mobile communications, mobile stations, in particular, keyboard unit for a mobile station.

SUBSTANCE: to achieve the effect, keyboard unit of mobile station contains base key panel for supporting a set of keys, which contain a set of first keys and a set of second keys. Keyboard unit contains a set of first keys and a set of second keys positioned on base key panel, where a set of second keys is determined by means of horizontal central lines and vertical central lines of a set of first keys. A set of second keys may be determined additionally by means of external perimeters of a set of first keys. Keyboard unit may additionally contain a reinforcement plate connected to base key panel, for mechanically hardening the keyboard unit. A symbol of an alphabet may be assigned to each one of a set of first keys. A digit may be assigned to at least one of a set of second keys.

EFFECT: prevented complication of interaction of user with the keyboard, which occurs because dimensions of modern models of mobile stations are prone to reduction and, therefore, usable area of keyboard is also reduced.

2 cl, 14 dwg