Keypads for electrical devices
First Claim
Patent Images
1. An electrical device comprising:
- a body;
a display secured to the body for visual presentation of information;
a keypad rotatably coupled to the body, wherein the keypad is rotatable with respect to the body and includes a plurality of pressure sensitive areas which detect key presses and rotation, and produce corresponding electrical signals;
a user changeable keymat coupled to the keypad, the keymat defining a plurality of individual numeral keys; and
the keymat of the keypad is configured to rotate with respect to the body;
angular orientation measurement circuitry operable to measure the angular orientation of the keymat with respect to the body.
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Accused Products
Abstract
A mobile telephone includes a body, a display, and a keypad. The keypad has a plurality of individual numeral keys assigned to individual numerals and may be rotated with respect to the body. In this way it is possible for the presentation of information on the display to remain in a fixed orientation with respect to a user while the body is rotated about the display so that the mobile telephone can be converted from right-handed to left-handed use or the display can be moved from a first orientation to a second orientation.
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Citations
13 Claims
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1. An electrical device comprising:
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a body;
a display secured to the body for visual presentation of information;
a keypad rotatably coupled to the body, wherein the keypad is rotatable with respect to the body and includes a plurality of pressure sensitive areas which detect key presses and rotation, and produce corresponding electrical signals;
a user changeable keymat coupled to the keypad, the keymat defining a plurality of individual numeral keys; and
the keymat of the keypad is configured to rotate with respect to the body;
angular orientation measurement circuitry operable to measure the angular orientation of the keymat with respect to the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
a hardware interface to change the functions of the electrical device; and
wherein, the keymat provides configuration data for the hardware interface.
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13. The electrical device according to claim 12, wherein the keymat comprises a plurality of zones at different angular positions operable such that the pressing of at least one of the plurality of zones and rotating the key mat causes different alpha-numerical characters to be selected and entered on the display screen.
Specification