Reversible keypad and display for a telephone handset
First Claim
1. A telephone handset comprising a first display screen, a second display screen, a first touch sensitive overlay on said first screen, a second touch sensitive overlay on said second display screen, data processing means operating in the first mode to display a keypad including a telephone keypad comprising a plurality of keys on said first display screen, to display information on said second screen, and to make a telephone call in response to the touching of the displayed keys of said telephone keypad, and operating in a second mode to display a keypad including a set of keys on said second screen, to display information on said first screen and responsive to the touching of the keys of said second set to control the display of information on said first screen, said data processing means including means to switch the mode of said data processing means to said first mode or to said second mode.
5 Assignments
0 Petitions
Accused Products
Abstract
In cellular telephone handset having an upper casing and a lower casing, liquid crystal display screens with touch sensitive overlays are provided on each casing. In one mode of operation, the screen on the lower casing will display a telephone keypad and the telephone handset will respond to the touching of the keys from the telephone keypad to dial telephone numbers and will display information on the screen on the upper casing. In a second mode of operation, the screen on the upper casing will display function keys and the telephone handset will respond to the touching of the function keys and will display information on the screen on the lower casing.
38 Citations
8 Claims
- 1. A telephone handset comprising a first display screen, a second display screen, a first touch sensitive overlay on said first screen, a second touch sensitive overlay on said second display screen, data processing means operating in the first mode to display a keypad including a telephone keypad comprising a plurality of keys on said first display screen, to display information on said second screen, and to make a telephone call in response to the touching of the displayed keys of said telephone keypad, and operating in a second mode to display a keypad including a set of keys on said second screen, to display information on said first screen and responsive to the touching of the keys of said second set to control the display of information on said first screen, said data processing means including means to switch the mode of said data processing means to said first mode or to said second mode.
Specification