Portable communication apparatus having first and second user interfaces, and an accessory device comprising a keypad and a display for a portable radio telephone
First Claim
1. A portable communication apparatus having a main apparatus housing, a first controller, a user interface with a first keypad, a first display, and means for receiving characters adapted to form text in response to keystrokes entered by a user on the first keypad, an accessory connector, and an external accessory device with a second keypad, a second display, and a second controller adapted to present keystrokes entered by the user on the second keypad as text on the second display, wherein the first controller is adapted to receive digital signals representing the keystrokes entered on the second keypad from the accessory device through the accessory connector and to forward the digital signals to the character receiving means, the character receiving means is further adapted to form text in response to the keystrokes entered on the second keypad, and the external accessory device is detachably connectable to the accessory connector.
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Accused Products
Abstract
A portable communication apparatus, such as a mobile telephone, has a main apparatus housing, a first user interface with a first keypad, such as an ordinary telephone keypad, and a first display. The apparatus also has a second user interface with a second keypad, preferably a typewriter-type keyboard, and a second display, which preferably is larger than the first display. The second keypad and the second display are detachably connectable to the main apparatus housing of the portable communication apparatus.
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Citations
23 Claims
- 1. A portable communication apparatus having a main apparatus housing, a first controller, a user interface with a first keypad, a first display, and means for receiving characters adapted to form text in response to keystrokes entered by a user on the first keypad, an accessory connector, and an external accessory device with a second keypad, a second display, and a second controller adapted to present keystrokes entered by the user on the second keypad as text on the second display, wherein the first controller is adapted to receive digital signals representing the keystrokes entered on the second keypad from the accessory device through the accessory connector and to forward the digital signals to the character receiving means, the character receiving means is further adapted to form text in response to the keystrokes entered on the second keypad, and the external accessory device is detachably connectable to the accessory connector.
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12. A portable communication apparatus having a main apparatus housing, a first user interface with a first keypad and a first display, and a second user interface with a second keypad and a second display, wherein the second keypad and the second display are detachably connectable to the main apparatus housing;
- the second keypad and the second display are formed as an accessory unit;
the accessory unit is divided into a first housing portion, in which the second keypad is provided, and a second housing portion, in which the second display is provided;
the second housing portion comprises a third keypad, which has keys for navigating a cursor on the second display; and
the third keypad has keys for performing affirmative and negative actions in the first user interface and in the second user interface.
- the second keypad and the second display are formed as an accessory unit;
- 13. An accessory device for a portable radio telephone having a user interface that includes a first keypad, a first display, a first controller, and means for receiving characters adapted to form text in response to keystrokes entered by a user on the first keypad, the accessory device comprising a second keypad, a second display, an accessory connector for detachably connecting with the radio telephone, and a second controller adapted to detect keystrokes entered by the user on the second keypad, to present the entered keystrokes as text on the second display, to generate digital signals representing the detected keystrokes, and to transfer the digital signals through the accessory connector to the character receiving means.
Specification